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Note: for similar EVKs, see Using J-Link with MIMXRT1060-EVKB. This article provides details using a J-Link debug probe with either of these EVKs.  There are two options: the onboard debug circuit can be updated with Segger J-Link firmware, or an external J-Link debug probe can be attached to the EVK.  Using the onboard debug circuit is helpful as no other debug probe is required.  However, the onboard debug circuit will no longer power the EVK when updated with the J-Link firmware.  Appnote AN13206 has more details on this, and the comparison of the firmware options for the debug circuit.  This article details the steps to use either J-Link option.   Using external J-Link debug probe Segger offers several J-Link probe options.  To use one of these probes with these EVKs, configure the EVK with these settings: Remove jumpers J47 and J48, to disconnect the SWD signals from onboard debug circuit.  These jumpers or installed by default. Use default power selection on J1 with pins 5-6 shorted. Connect the J-Link probe to J21, 20-pin dual-row 0.1" header. Power the EVK with one of the power supply options.  Typically USB connector J41 is used to power the board, and provides a UART/USB bridge through the onboard debug circuit.   Using onboard debug circuit with J-Link firmware Follow Appnote AN13206 to program the J-Link firmware to the EVK Install jumpers J47 and J48, to connect the SWD signals from onboard debug circuit.  These jumpers or installed by default. Plug USB cable to J41.  This provides connection for J-Link debugger and UART/USB bridge.  However, with J-Link firmware, J41 no longer powers the EVK Power the EVK with another source.  Here we will use another USB port.  Move the jumper on J1 to short pins 3-4 (default shorts pins 5-6) Connect a 2nd USB cable to J9 to power the EVK.  The green LED next to J1 will be lit when the EVK is properly powered.
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Note: for similar EVKs, see Using J-Link with MIMXRT1060-EVK or MIMXRT1064-EVK. This article provides details using a J-Link debug probe with this EVK.  There are two options: the onboard debug circuit can be updated with Segger J-Link firmware, or an external J-Link debug probe can be attached to the EVK.  Using the onboard debug circuit is helpful as no other debug probe is required.  However, the onboard debug circuit will no longer power the EVK when updated with the J-Link firmware.   Appnote AN13206  has more details on this, and the comparison of the firmware options for the debug circuit.  This article details the steps to use either J-Link option.     Using external J-Link debug probe Segger offers several   J-Link probe   options.  To use one of these probes with these EVKs, configure the EVK with these settings: Remove jumpers J9 and J10, to disconnect the SWD signals from onboard debug circuit.  These jumpers or installed by default. Use default power selection on J40 with pins 5-6 shorted. Connect the J-Link probe to J2, 20-pin dual-row 0.1" header. Power the EVK with one of the power supply options.  Typically USB connector J1 is used to power the board, and provides a UART/USB bridge through the onboard debug circuit.   Using onboard debug circuit with J-Link firmware Follow Appnote AN13206   to program the J-Link firmware to the EVK. Use jumper J12 to change the mode of the onboard debug circuit: Install J12 to force bootloader mode, to update the firmware image Remove J12 to use the onboard debugger Install jumpers J9 and J10, to connect the SWD signals from onboard debug circuit.  These jumpers or installed by default. Plug USB cable to J1.  This provides connection for J-Link debugger and UART/USB bridge.  However, with J-Link firmware, J1 no longer powers the EVK Power the EVK with another source.  Here we will use another USB port.  Move the jumper on J40 to short pins 3-4 (default shorts pins 5-6) Connect a 2nd USB cable to J48 to power the EVK.  The green LED next to J40 will be lit when the EVK is properly powered.  
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This guide will walk through how to do connect the camera and LCD modules to i.MX RT boards and how to test to ensure the camera and LCD are connected properly. Update May 2022: There are now updated versions of these LCD panels that have an impact on software. See this post for more details. The physical connections are the same for both the original and new panels however so there are no changes to this guide.   This first part of this guide is for the i.MX RT1050, i.MX RT1060, i.MX RT1064 EVKs. The second part of this guide is for i.MX RT595, i.MX RT1160 and i.MX RT1170 EVKs.      Part 1: Camera and LCD for i.MX RT1050, i.MX RT1060, and i.MX RT1064:  The camera used by the RT1050, RT1060, and R1064 EVKs are the same. However this camera only comes with the RT1060 and RT1064 EVKs. There are alternatives available for the RT1050 as discussed in this blog post.    The LCD screen compatible with these boards is the RK043FN66HS-CTG     Camera:  1) The camera connector is on the front of the board. Flip the black connector up so it's 90 degrees from its original position.  2) Then slide in the flat ribbon connector of the camera 3) Flip the black connector back down. It should keep the ribbon cable snug.   LCD: 1) On the back of the board, slide the black connector for the LCD ribbon forward. 2) Then slide in the flat LCD ribbon cable underneath the black connector. 3) Slide the black connector back to its original position. The cable should be snug. 4) Do the same for the touch controller connector and slide the black connector forward 4)Then insert the cable between the black connector and the white top so that the cable is in the middle. It might take a few tries as its somewhat difficult. You could also use needle nose pliers to help guide in the cable but be careful about damaging the cable. 5) Then slide the black connector back to the original position. The cable should be snug. 6) It should look like the following when complete.   Testing: 1) To test the camera and LCD, use the CSI driver examples in the MCUXpresso SDK.  2) The camera will likely be out of focus the first time you use it. Adjust it by rotating the lens clockwise until the image is in focus. You can use your fingers or some needle nose pliers. It could take up to two rotations and it should turn easily. Also remove the plastic cover.    3) To test the touch controller, use the emwin temperature control example in the MCUXpresso SDK   Tape: 1) Once the LCD has been confirmed to work, you can use two layers of thick double sided foam tape to securely attach it to the board.      Part 2: Camera and LCD for i.MX RT1160 and i.MX RT1170 EVKs:  The i.MX RT1160 and i.MX RT1170 EVKs both come with a OV5640 MIPI camera module in the box.    The LCD screen compatible with the i.MX RT1160 and i.MX RT1170-EVK is the RK055HDMIPI4MA0  and it can  be found here.   i.MX RT1170-EVK Camera:  1) The camera connector is on the front of the board at J2. It connects by simply pressing the camera down onto the connector. It takes a bit of force but should not be too difficult.    i.MX RT1170-EVK LCD: 1) On the back of the board, slide the black connector (J40) for the LCD ribbon forward towards the edge of the board.    2) Then carefully slide in the flat LCD ribbon cable into the connector. The blue writing should be facing up like in the photo. It should go above the black part of the connector that you just slid out, and under the white part of the connector.  3) Slide the black plastic connector back to its original position. The cable should be snug if pulled. It should look like the following:    i.MX RT1170-EVK Power: 1) If using the LCD, then the external power adapter must be used with the board. Connect the barrel connector to J43 on the board. 2) Also change the jumper on J38 to be on pins 1-2 so that it uses the external power.  3) Connect a micro-USB cable to J11, which will cause the board to enumerate as a COM port and as a debug interface for downloading and debugging code   i.MX RT1170-EVK Camera and LCD Testing: 1) To test the camera and LCD, use the csi_mipi_rgb_cm7 driver example that can be found in the MCUXpresso SDK for i.MX RT1170. The camera input should be displayed on the LCD screen if everything is connected properly.          
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There are two new LCD panels that are now available for i.MX RT EVKs: The original RK043FN02H-CT is being replaced with RK043FN66HS-CTG used by the following EVKs: i.MX RT1050 i.MX RT1060 i.MX RT1064   The original RK055HDMIPI4M is being replaced with RK055HDMIPI4MA0 used by the following EVKs: i.MX RT595 i.MX RT1160 i.MX RT1170   These changes are due to the previous panels being EOL by the LCD panel manufacturer. These new LCDs have the same dimensions and screen size as their original versions (4.3” 480x272 and 5.5” 720x1280 respectively) and the physical connections are the same. The version name can be found on the back of the LCD. However there are modifications to the software that may need to be made. This updated code is already available in MCUXpresso SDK 2.11 and most SDK demos are configured by default to use the new panel.  However the eIQ demos were not updated so please see this post for full details on how to get eIQ demos to work with the new panels.  For the i.MX RT1050/1060/1064 panel RK043FN66HS-CTG: The touch controller has changed and the SDK software has been modified to support the new touch controller. The LCD panel also has slightly different specs but the same code used for the original LCD panel will also work with the new LCD panel, so no change is necessary for display-only demos.  MCUXpresso SDK 2.11 LCD demos are configured to support the new panel by default. So if you have the original panel you will need to change in the SDK code:      #define DEMO_PANEL           from DEMO_PANEL_RK043FN66HS    //new panel (default setting)           to DEMO_PANEL_RK043FN02H          //original panel   For the i.MX RT595/RT1160/RT1170 panel RK055HDMIPI4MA0: Both the touch and display SDK software had to be updated to support this new panel. MCUXpresso SDK 2.11 LCD demos are configured to support the new panel by default. So if you have the original panel you will need to change in the SDK code:     #define DEMO_PANEL           from DEMO_PANEL_RK055MHD091    //new panel (default setting)           to DEMO_PANEL_RK055AHD091         //original panel
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Face recognition Actually, face recognition technology is used in many scenes in our daily life, for instance, when taking pictures with the mobile phone, the camera software will automatically recognize the faces in the lens and focus, scan face for real-name verification when registering the App and scan face for pay, etc. The basic steps of face recognition are shown in the below figure. Firstly, the camera captures image data, then through preprocessing such as noise elimination and image format conversion, the image data will be transmitted to the processor for face detection and recognition calculations. After recognizing the face successful, continue to do the follow-up operations. Fig1 The basic steps of face recognition i.MX RT106F MCU based solution for face recognition The below figure is the block diagram of i.MX RT106F MCU-based solution for face recognition provided by the NXP. Comparing with the general processor (CPU) solution, it has comparative advantages in cost and power consumption. Further, the PCB size will be smaller too and the MCU usually can boot up within a few hundred milliseconds even with RTOS, versus to the boot-up speed of the processor (CPU) equipped with a Linux system that is about 10 seconds, it will give customers a better user experience. Fig2 i.MX RT106F MCU based solution for face recognition Of course, the i.MX RT106F MCU-based solution face recognition solution is not intended to replace the solution based on the processor (CPU). As aforementioned, face recognition technology has a lot of application cases, and it will definitely be used in more fields in the future, so the MCU-based face recognition solution provides customers and the market with another choice. i.MX RT106F MCU The i.MX RT106F face recognition crossover processor is an EdgeReady™ solution-specific variant of the i.MX RT1060 family of crossover processors, targeting face recognition applications. It features NXP’s advanced implementation of the Arm Cortex®-M7 core, which operates at speeds up to 600 MHz to provide high CPU performance and the best real-time response. i.MX RT106F based solutions enable system designers to easily and inexpensively add face recognition capabilities to a wide variety of smart appliances, smart homes, smart retail, and smart industrial devices. The i.MX RT106F is licensed to run the OASIS Lite library for face recognition (as the below figure shows) which include: Face detection Anti-spoofing Face tracking Face alignment Glass detection Face recognition Confidence measure Face recognition quantified results, etc Fig3 OASIS Recognition Software Pipeline sln_viznas_iot_elock_oobe The sln_viznas_iot_elock_oobe project is the application on the SLN-VIZNAS-IOT (as the below figure shows, regarding the Bootstrap and Bootloader in the software flowchart, I will introduce them in the future). The following development work is based on the sln_viznas_iot_elock_oobe project, however, I need to sketch the basic workflow of it prior to starting real development work. Fig4 SLN-VIZNAS-IOT software flowchart sln_viznas_iot_elock_oobe's workflow flow In the Camera_Start() function, the   task (Camera_Init_Task)   completes the initialization of the RGB and IR cameras, then creates a   task (Camera_Task); In the Display_Start() function, after the   task (Display_Init_Task)   completes the initialization of the display medium (USB or LCD), it immediately creates the   task (Display_Task)   and sends the message queue s_DisplayReqMsg.id = QMSG_DISPLAY_FRAME_REQ to the   task (Camera_Task), then the pDispData will point to the s_BufferLcd[0] array for storing the image data to be displayed; In the Oasis_Start() function, firstly, OASISLT_init() completes the initialization of the OAISIT library, then creates a   task (Oasis_Task)   to send the message queues gFaceDetReqMsg.id = QMSG_FACEREC_FRAME_REQ and gFaceInfoMsg.id = QMSG_FACEREC_INFO_UPDATE to the   task (Camera_Task)   to make the pDetIR and pDetRGB point to the face block diagram captured by the RGB and IR cameras, and update the content pointed by infoMsgIn. After the camera is initialized, the RGB camera works at first. After the image data is captured, an interrupt is triggered and the callback function Camera_Callback() sends the message queue DQMsg.id = QMSG_CAMERA_DQ to the   task (Camera_Task), and DQIndex++; CAMERA_RECEIVER_GetFullBuffer() extracts the image data captured by the RGB camera, and sends the message queue DPxpMsg.id = QMSG_PXP_DISPLAY to the   task (PXP_Task)   created in the APP_PXP_Start() function and EQIndex++, meanwhile switch the camera from RGB to IR. After the APP_PXPStartCamera2Display() function in the   task (PXP_Task)   completes processing, it sends the message queue s_DResMsg.id = QMSG_PXP_DISPLAY to the   task (Camera_Task), and the   task (Camera_Task)   sends the message queue DresMsg.id = QMSG_DISPLAY_FRAME_RES to the task (Display_Task) after receiving the above message queue. The   task (Display_Task)   completes display, then it sends the message queue s_DisplayReqMsg.id = QMSG_DISPLAY_FRAME_REQ to the   task (Camera_Task)   to make pDispData point to the s_BufferLcd[1] array; After the IR camera completes capturing work, CAMERA_RECEIVER_GetFullBuffer() extracts the image data and sends the message queue DPxpMsg.id = QMSG_PXP_DISPLAY to the   (PXP_Task) task   created in the APP_PXP_Start() function, continue to execute EQIndex++ and switch to RGB camera again, and repeat the steps 5. Finally, send the message queue FPxpMsg.id = QMSG_PXP_FACEREC to the   task (PXP_Task)   and set irReady = true. After the   task (PXP_Task)   receives the above message queue, it calls APP_PXPStartCamera2DetBuf() and after completes the processing, sends the message queue s_FResMsg.id = QMSG_PXP_FACEREC to the   task (Camera_Task); CAMERA_RECEIVER_GetFullBuffer() extracts the image data collected by the RGB camera, repeat step 5, when (pDetRGB && irReady) condition is met, send the message queue FPxpMsg.id = QMSG_PXP_FACEREC to the   task (PXP_Task)   and set irReady = false, pDetRGB = NULL, pDetIR = NULL. After the   task (PXP_Task)   receives the above message queue, it calls APP_PXPStartCamera2DetBuf() and after completes the processing, sends the message queue s_FResMsg.id = QMSG_PXP_FACEREC to the   task (Camera_Task). At this time, the (!pDetIR && !pDetRGB) condition is met and the Queue message FResMsg.id = QMSG_FACEREC_FRAME_RES is sent to the   task (Oasis_Task), run OASISLT_run_extend to perform face recognition calculation, and send the message queue gFaceDetReqMsg.id = QMSG_FACEREC_FRAME_REQ to the   task (Camera_Task)   to make the pDetIR and pDetRGB point to the face block diagram captured by the RGB and IR cameras again. keep repeat steps 6 and 7; Fig5 sln_viznas_iot_elock_oobe's workflow flow Smart Coffee machine Fig 6 is the workflow of the smart coffee machine that I want to develop for, as there is no LCD board on hand, in the below development process, I will select Win10's camera (as the below figure shows) to output the captured image, further, take advantage of the Shell command to simulate the LCD's touch feature to interact with the board.   Fig6 workflow of the smart coffee machine Fig7 Camera Code modification In the commondef.h, add a new member variable 'uint16_t coffee_taste' in Union FeatureItem to stand for the favorite coffee taste; typedef union { struct { /*put char/unsigned char together to avoid padding*/ unsigned char magic; char name[FEATUREDATA_NAME_MAX_LEN]; int index; // this id identify a feature uniquely,we should use it as a handler for feature add/del/update/rename uint16_t id; uint16_t pad; // Add a new component uint16_t coffee_taste; /*put feature in the last so, we can take it as dynamic, size limitation: * (FEATUREDATA_FLASH_PAGE_SIZE * 2 - 1 - FEATUREDATA_NAME_MAX_LEN - 4 - 4 -2)/4*/ float feature[0]; }; unsigned char raw[FEATUREDATA_FLASH_PAGE_SIZE * 2]; } FeatureItem; // 1kB   In featuredb.h, add two member functions into class FeatureDB:   set_taste()   and   get_taste() , and add the definition of the above two member functions in featuredb.cpp; class FeatureDB { public: FeatureDB(); ~FeatureDB(); int add_feature(uint16_t id, const std::string name, float *feature); int update_feature(uint16_t id, const std::string name, float *feature); int del_feature(uint16_t id, std::string name); int del_feature(const std::string name); int del_feature_all(); std::vector<std::string> get_names(); int get_name(uint16_t id, std::string &name); std::vector<uint16_t> get_ids(); int ren_name(const std::string oldname, const std::string newname); int feature_count(); int get_free(int &index); int database_save(int count); int get_feature(uint16_t id, float *feature); void set_autosave(bool auto_save); bool get_autosave(); //Add two customize member functions int set_taste(const std::string username, uint16_t taste_number); int get_taste(const std::string username); private: bool auto_save; int load_feature(); int erase_feature(int index); int save_feature(int index = 0); int reassign_feature(); int get_free_mapmagic(); int get_remain_map(); }; int FeatureDB::set_taste(const std::string username, uint16_t taste_number) { int index = FEATUREDATA_MAX_COUNT; for (int i = 0; i < FEATUREDATA_MAX_COUNT; i++) { if (s_FeatureData.item[i].magic == FEATUREDATA_MAGIC_VALID) { if (!strcmp(username.c_str(), s_FeatureData.item[i].name)) { index = i; } } } if (index != FEATUREDATA_MAX_COUNT) { s_FeatureData.item[index].coffee_taste = taste_number; return 0; } else { return -1; } } int FeatureDB::get_taste(const std::string username) { int index = FEATUREDATA_MAX_COUNT; int taste_number; for (int i = 0; i < FEATUREDATA_MAX_COUNT; i++) { if (s_FeatureData.item[i].magic == FEATUREDATA_MAGIC_VALID) { if (!strcmp(username.c_str(), s_FeatureData.item[i].name)) { index = i; } } } if (index != FEATUREDATA_MAX_COUNT) { taste_number = s_FeatureData.item[index].coffee_taste; return taste_number; } else { return -1; } }   In database.h, add the declarations of   DB_Set_Taste()   and   DB_Get_Taste()   functions, and in database.cpp, add the related codes of the above two functions. These two functions are equivalent to encapsulating the newly added member functions set_taste() and get_taste() of the FeatureDB class; int DB_Del(uint16_t id, std::string name); int DB_Del(string name); int DB_DelAll(); int DB_Ren(const std::string oldname, const std::string newname); int DB_GetFree(int &index); int DB_GetNames(std::vector<std::string> *names); int DB_Count(int *count); int DB_Save(int count); int DB_GetFeature(uint16_t id, float *feature); int DB_Add(uint16_t id, float *feature); int DB_Add(uint16_t id, std::string name, float *feature); int DB_Update(uint16_t id, float *feature); int DB_GetIDs(std::vector<uint16_t> &ids); int DB_GetName(uint16_t id, std::string &names); int DB_GenID(uint16_t *id); int DB_SetAutoSave(bool auto_save); // Add two customize functions int DB_Set_Taste(const std::string username, const uint16_t taste); int DB_Get_Taste(const std::string username); int DB_Set_Taste(const std::string username, const uint16_t taste) { int ret = DB_MGMT_FAILED; ret = DB_Lock(); if (DB_MGMT_OK == ret) { ret = s_DB->set_taste(username, taste); DB_UnLock(); } return ret; } int DB_Get_Taste(const std::string username) { int ret = DB_MGMT_FAILED; ret = DB_Lock(); if (DB_MGMT_OK == ret) { ret = s_DB->get_taste(username); DB_UnLock(); } return ret; } In sln_api.h, add the declarations of the functions   VIZN_SetTaste() ,   VIZN_GetTaste()   and   VIZN_Is_Rec_User() , and add the codes of the above three functions in sln_api.cpp. The VIZN_SetTaste() and VIZN_GetTaste() functions are equivalent to the encapsulation of the DB_Set_Taste() and DB_Get_Taste() functions.   Why is it so complicated?   To follow the code layering mechanism of the elock_oobe project and reduce the difficulty of code implementation through code layered encapsulation. /** * @brief Set user's favorite coffee taste. * * @Param clientHandle The client handler which required this action * @Param userName Pointer to a buffer which contains the name of the new user. * @Param taste Coffee taste */ vizn_api_status_t VIZN_SetTaste(VIZN_api_client_t *clientHandle, char *UserName, cfg_Coffee_taste taste); /** * @brief Set user's favorite coffee taste. * * @Param clientHandle The client handler which required this action * @Param userName Pointer to a buffer which contains the name of the new user. * @Param taste Pointer to the Coffee taste */ vizn_api_status_t VIZN_GetTaste(VIZN_api_client_t *clientHandle, char *UserName, int *taste); vizn_api_status_t VIZN_Is_Rec_User(VIZN_api_client_t *clientHandle, char *UserName); ~~~~~~~~~ vizn_api_status_t VIZN_SetTaste(VIZN_api_client_t *clientHandle, char *UserName, cfg_Coffee_taste taste) { int32_t status; if (!IsValidUserName(UserName)) { return kStatus_API_Layer_RenameUser_InvalidUserName; } status = DB_Set_Taste(std::string(UserName), (uint16_t)taste); if (status == 0) { return kStatus_API_Layer_Success; } else if (status == -1) { return kStatus_API_Layer_SetTaste_Failed; } } vizn_api_status_t VIZN_GetTaste(VIZN_api_client_t *clientHandle, char *UserName, int *taste) { int32_t status; if (!IsValidUserName(UserName)) { return kStatus_API_Layer_RenameUser_InvalidUserName; } *taste = DB_Get_Taste(std::string(UserName)); if (*taste != -1) { return kStatus_API_Layer_Success; } else { return kStatus_API_Layer_GetTaste_Failed; } } vizn_api_status_t VIZN_Is_Rec_User(VIZN_api_client_t *clientHandle, char *UserName) { if (!IsValidUserName(UserName)) { return kStatus_API_Layer_RenameUser_InvalidUserName; } return kStatus_API_Layer_Success; } In sln_api_init.cpp, declare the variable:   std::string Current_User = "" ; which is used to store the name corresponding to the face after recognition, and add the processing function   Coffee_Rec()   after successful face recognition in the structure variable ops2; std::string Current_User = " "; //Add customize function int Coffee_Rec(VIZN_api_client_t *pClient, face_info_t face_info); client_operations_t ops2 = { .detect = NULL, .recognize = Coffee_Rec,//NULL, .enrolment = NULL, }; //Add customize function int Coffee_Rec(VIZN_api_client_t *pClient, face_info_t face_info) { Current_User = face_info.name; return 1; } In sln_timers.h, increase MS_SYSTEM_LOCKED to extend the locked status time to 25 seconds; ~~~~~~~~ #define MS_SYSTEM_LOCKED 25000 //2000 // MS in which the board is in a locked state after a reg/rec. ~~~~~~~~ In sln_cli.cpp, add three Shell commands:   order, set_taste, get_taste   to stand for the operations of brewing coffee, setting coffee taste, and checking coffee taste; SHELL_COMMAND_DEFINE(set_taste, (char *)"\r\n\"set_taste username <0|1|2|3|~>\": set user's favorite taste\r\n" "0 - Cappuccino\r\n" "1 - Black Coffee\r\n" "2 - Coffee latte\r\n" "3 - Flat White\r\n" "4 - Cortado\r\n" "5 - Mocha\r\n" "6 - Con Panna\r\n" "7 - Lungo\r\n" "8 - Ristretto\r\n" "9 - Others \r\n", FFI_CLI_SetTasteCommand, SHELL_IGNORE_PARAMETER_COUNT); SHELL_COMMAND_DEFINE(get_taste, (char *)"\r\n\"get_taste username\": return user's favorite taste \r\n", FFI_CLI_GetTasteCommand, SHELL_IGNORE_PARAMETER_COUNT); SHELL_COMMAND_DEFINE(order, (char *)"\r\n\"order <0|1|2|3|~>\": order a favorite taste \r\n", FFI_CLI_OrderCommand, SHELL_IGNORE_PARAMETER_COUNT); ~~~~~~ static shell_status_t FFI_CLI_SetTasteCommand(shell_handle_t shellContextHandle, int32_t argc, char **argv) { if (argc != 3) { SHELL_Printf(shellContextHandle, "Wrong parameters\r\n"); return kStatus_SHELL_Error; } return UsbShell_QueueSendFromISR(shellContextHandle, argc, argv, SHELL_EV_FFI_CLI_SET_TASTE); } static shell_status_t FFI_CLI_GetTasteCommand(shell_handle_t shellContextHandle, int32_t argc, char **argv) { if (argc != 2) { SHELL_Printf(shellContextHandle, "Wrong parameters\r\n"); return kStatus_SHELL_Error; } return UsbShell_QueueSendFromISR(shellContextHandle, argc, argv, SHELL_EV_FFI_CLI_GET_TASTE); } shell_status_t FFI_CLI_OrderCommand(shell_handle_t shellContextHandle, int32_t argc, char **argv) { if (argc > 2) { SHELL_Printf(shellContextHandle, "Wrong parameters\r\n"); return kStatus_SHELL_Error; } return UsbShell_QueueSendFromISR(shellContextHandle, argc, argv, SHELL_EV_FFI_CLI_ORDER); } ~~~~~~ shell_status_t RegisterFFICmds(shell_handle_t shellContextHandle) { SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(list)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(add)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(del)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(rename)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(verbose)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(camera)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(version)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(save)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(updateotw)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(reset)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(emotion)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(liveness)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(detection)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(display)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(wifi)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(app_type)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(low_power)); // Add three Shell commands SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(order)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(set_taste)); SHELL_RegisterCommand(shellContextHandle, SHELL_COMMAND(get_taste)); return kStatus_SHELL_Success; } In sln_cli.cpp, it needs to add corresponding codes for handle   order, set_taste, get_taste   instructions in   task UsbShell_CmdProcess_Task else if (queueMsg.shellCommand == SHELL_EV_FFI_CLI_SET_TASTE) { int coffee_taste = atoi(queueMsg.argv[2]); if (coffee_taste >= Cappuccino && coffee_taste <= Others) { status = VIZN_SetTaste(&VIZN_API_CLIENT(Shell),(char *)queueMsg.argv[1], (cfg_Coffee_taste)coffee_taste); if (status == kStatus_API_Layer_Success) { SHELL_Printf(shellContextHandle, "User: %s like coffee taste: %s \r\n", queueMsg.argv[1], Coffee_type[coffee_taste]); } else { SHELL_Printf(shellContextHandle, "Cannot set coffee taste\r\n"); } } else { SHELL_Printf(shellContextHandle, "Unsupported coffee taste\r\n"); } } else if (queueMsg.shellCommand == SHELL_EV_FFI_CLI_GET_TASTE) { int get_taste_num = 0; status = VIZN_GetTaste(&VIZN_API_CLIENT(Shell),(char *)queueMsg.argv[1], &get_taste_num); if (status == kStatus_API_Layer_Success) { SHELL_Printf(shellContextHandle, "User: %s like coffee taste: %s \r\n", queueMsg.argv[1], Coffee_type[(cfg_Coffee_taste)(get_taste_num)]); } else { SHELL_Printf(shellContextHandle, "Cannot get coffee taste\r\n"); } } else if (queueMsg.shellCommand == SHELL_EV_FFI_CLI_ORDER) { status = VIZN_Is_Rec_User(&VIZN_API_CLIENT(Shell),(char *)Current_User.c_str()); if (status == kStatus_API_Layer_Success) { if (queueMsg.argc == 1) { int get_taste_num = 0; status = VIZN_GetTaste(&VIZN_API_CLIENT(Shell),(char*)Current_User.c_str(), &get_taste_num); if (status == kStatus_API_Layer_Success) { SHELL_Printf(shellContextHandle, "User: %s order the a cup of %s \r\n", Current_User.c_str(), Coffee_type[(cfg_Coffee_taste)(get_taste_num)]); } else { SHELL_Printf(shellContextHandle, "Sorry, please order again, Current user is %s\r\n",Current_User.c_str()); } } else if(queueMsg.argc == 2) { int coffee_taste = atoi(queueMsg.argv[1]); if (coffee_taste >= Cappuccino && coffee_taste <= Others) { status = VIZN_SetTaste(&VIZN_API_CLIENT(Shell),(char*)Current_User.c_str(), (cfg_Coffee_taste)coffee_taste); if (status == kStatus_API_Layer_Success) { SHELL_Printf(shellContextHandle, "User: %s order a cup of %s \r\n", Current_User.c_str(), Coffee_type[coffee_taste]); } else { SHELL_Printf(shellContextHandle, "Cannot set coffee taste, Current user is %s\r\n",Current_User.c_str()); } } else { SHELL_Printf(shellContextHandle, "Unsupported coffee taste\r\n"); } } } } Use the cafe logo of《Friends》to replace the original Welcome_home picture, use the BmpCvt tool to convert the picture into the corresponding array, and add it to welcomehome_320x122.h. static const unsigned short Coffee_shop_320_122[] = { 0x59E6, 0x6227, 0x6247, 0x59C5, 0x59C5, 0x59A5, 0x4103, 0x6A67, 0x6A47, 0x6227, 0x6A47, 0x6A68, 0x7268, 0x6A67, 0x6A67, 0x6A47, 0x72A9, 0x6A68, 0x7268, 0x6A48, 0x5A06, 0x6A88, 0x6A68, 0x6247, 0x6A47, 0x7289, 0x7289, 0x6A47, 0x6A47, 0x6A47, 0x6227, 0x6A68, 0x6206, 0x6A47, 0x5A26, 0x6247, 0x6227, 0x6A27, 0x4924, 0x836D, 0x5207, 0x7BAC, 0x5247, 0x83ED, 0x4A47, 0x2923, 0x7B8C, 0x49E5, 0x49E5, 0x4A05, 0x28C1, 0x5226, 0x6267, 0x6A87, 0x72E9, 0x6267, 0x6AA9, 0x5A27, 0x6AA9, 0x6AA9, 0x5A47, 0x6A88, 0x5A06, 0x5A47, 0x6AA9, 0x5A47, 0x62A9, 0x5206, 0x6288, 0x6268, 0x5A47, 0x5A27, 0x5A47, 0x5A27, 0x49E6, 0x4A07, 0x4A07, 0x5A89, 0x49C6, 0x5A48, 0x5A28, 0x5A47, 0x5226, 0x49E6, 0x49C6, 0x41A6, 0x5208, 0x2082, 0x52A8, 0x6B6B, 0x39A5, 0x39A5, 0x3964, 0x49E7, 0x3104, 0x49C7, 0x3945, 0x41A6, 0x28A2, 0x2061, 0x3965, 0x28E3, 0x1881, 0x3944, 0x3103, 0x3103, 0x3903, 0x4145, 0x51A6, 0x51C6, 0x4985, 0x51E6, 0x51E6, 0x61E7, 0x6A48, 0x6A28, 0x6A28, 0x6A27, 0x61E6, 0x6207, 0x6A68, 0x59E7, 0x4185, 0x51E6, 0x51A6, 0x6228, 0x5A07, 0x6228, 0x5A08, 0x4184, 0x41A5, 0x4164, 0x3944, 0x3944, 0x736B, 0x83ED, 0x41A5, 0x83ED, 0x6288, 0x8BAB, 0x836A, 0x6287, 0x6B2A, 0x5267, 0x83CD, 0x5A68, 0x5228, 0x3986, 0x3985, 0x7B0A, 0x6A67, 0x7267, 0x832B, 0x49A5, 0x6206, 0x8AC9, 0x72A8, 0x82C9, 0x82E9, 0x8309, 0x6A46, 0x8B2B, 0x3860, 0x8329, 0x6A67, 0x7288, 0x7268, 0x61E6, 0x7267, 0x6A67, 0x59C5, 0x51A4, 0x6A46, 0x7AA8, 0x6A26, 0x7287, 0x7AA8, 0x72A8, 0x72A9, 0x51C5, 0x5A27, 0x5A27, 0x3923, 0x ~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~ 0x7B8C, 0x734B, 0x6B0A, 0x83CD, 0x83ED, 0x8C0E, 0x7B8C, 0x7B6C, 0x20C2, 0x5227, 0x83ED, 0x6AE9, 0x734B, 0x62A9, 0x7B6B, 0x7B8C, 0x62E9, 0x7BAC, 0x7B6B, 0x732A, 0x940D, 0x83AC, 0x732A, 0x7309, 0x8BCC, 0x7309, 0x8BCD, 0x83AC, 0x7B6B, 0x940D, 0x3943, 0x942E, 0x7B6B, 0x734A, 0x7B8B, 0x62C8, 0x7B8B, 0x7B6A, 0x7BAB, 0x732A, 0x7B6B, 0x7B6B, 0x83CC, 0x6B09, 0x6AA9, 0x6AE9, 0x7B6B, 0x7B8B, 0x83AC, 0x734B, 0x6AC9, 0x6B0A, 0x734B, 0x734A, 0x62A8, 0x732A, 0x8C0E, 0x8BCD, 0x944F, 0x734B, 0x7B8B, 0x732A, 0x942E, 0x8BCD, 0x83AD, 0x732B, 0x6B0A, 0x6AEA, 0x62C9, 0x9C90, 0x28C2, 0x8BEE, 0x93EE, 0x8BCD, 0x4183, 0x838B, 0x7B6A, 0x6287, 0x8BCB }; Programming the new project After saving the modified code and recompile the sln_viznas_iot_elock_oobe project (as shown in the figure below), then connect the MCU-LINK to J6 on the SLN-VIZNAS-IOT, just like Fig9 shows. Fig8 Recompile code Fig9 MCU-LINK (Note: it needs to reselect the Flash driver, as the below figure shows.) Fig10 Flash driver After that, it's able to program the code project to the on-board Hyperflash. Test & Summary When the new code project boot-up, please refer to   Get Started with the SLN-VIZNAS-IOT   to use the serial terminal to test the newly added three Shell commands: orders, set_taste, and get_taste. Once a face is successfully recognized, the cafe logo will appear up (as shown in Fig11). Fig11 Cafe logo Definitely, this smart coffee machine seems like a 'toy' demo, and there is a lot of work to improve it. Below is the list of my future work plans, Use the LCD panel instead of USB to display; Connect an external amplifier to enable voice prompt feature; Enable the Wifi feature to connect to the App; Use the GUI library to enhance UI experience; Add a voice recognition feature to control; And I'll be glad to hear any comments from you.    
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Background: The CAAM manufacturing protection feature provides a mechanism to authenticate the chip to the OEM's server. The  manufacturing protection   feature can be used to ensure that the chip:  Is a genuine NXP SoC  Is the correct device type and part number  Has been properly configured by means of fuses  Is running authenticated OEM software  Is currently in the secure or trusted mode The CAAM manufacturing protection feature is based on an ECC private key generated by the High Assurance Boot (HAB) code on every boot cycle. The Manufacturing Protection (MP) private key generation takes as input several fixed secrets and the MANUFACTURE_PROTECTION_KEY[255:0] being one of them in SoC fuses.   Issue Description: On certain i.MX RT117x and RT116x devices the MANUFACTURE_PROTECTION_KEY[255:0] fuses were incorrectly programmed at the NXP factory. During the MP private key generation, the CAAM block validates the inputs provided and   fails   as the MANUFACTURE_PROTECTION_KEY[255:0] provided is not a valid one. As the   MPPubK-generation   and   MPSign   CAAM functions depends on the result of   MPPrivK-generation   function the CAAM manufacturing protection feature cannot be used on the impacted devices. Details regarding manufacturing protection functions can be found in the section "Manufacturing-protection chip-authentication process" in the security reference manuals (SRM).  Please note that in closed mode the CAAM   MPPrivK-generation   function can be only executed once in the same power-on session. Running a second time returns a CAAM error (0x40000481) undefined protocol command which is not related to the issue described in this document.   Checking if your device is impacted: Customers can check if their device is impacted by following the 3 steps below: Checking the date code: Devices from datecodes prior to 2213 are impacted. Checking HAB events: The HAB code logs a warning event in the HAB persistent memory region after detecting a failure in the MP private key generation. This warning is logged independently regardless of whether HAB is enabled (SEC_CONFIG =1) or not. Customers can parse the HAB persistent memory region at 0x20242000 in order to get the warning events.  Impacted devices   should report the event below: Event    | 0xdb | 0x0024 | 0x45 |  SRCE Field: 69 30 e1 1d             |         |             |         |               STS = HAB_WARNING (0x69)             |         |             |         |             RSN = HAB_ENG_FAIL (0x30)             |         |             |         |            CTX = HAB_CTX_ENTRY (0xE1)             |         |             |         |            ENG = HAB_ENG_CAAM (0x1d)             |         |             |         |  Evt Data (hex):             |         |             |         |   00 01 00 02 40 00 04 cc 00 00 00 0f 00 00 00 00             |         |             |         |   00 00 00 00 00 00 00 00 00 00 00 01 3. Checking the CAAM SCFGR register:  After running the   MPPrivK-generation   function the CAAM block stores in the CAAM   SCFGR   register the elliptic curve that was selected when the   MPPrivK generation   protocol was executed. Users can check the   MPCURVE field [31:28]   in the   CAAM SCFGR   register and on impacted devices this field will be 0.    List of impacted devices:   All i.MX RT117x and RT116x devices prior to 2213 datecode are impacted.   Workaround: No Software Workaround can be implemented. Customers planning to use the Manufacturing Protection feature should request for SoC's that have the correct fuse programming. Please Note: This issue does not impact the Secure Boot flow and does not compromise security.
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Issue: 802.11 IEEE station Power Save mode is not working as expected with the latest SDK 2.11.1, supporting NXP wireless solutions 88W8987/88W8977/IW416.   Solution: Modify the structure in file : middleware/wifi/wifidriver/incl/mlan_fw.h, Replace  “ENH_PS_MODES action” to “uint16_t action”.     Note: This fix will officially be part of SDK: 2.12.0
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A vulnerability (CVE-2022-22819) has been identified on select NXP processors by which a malformed SB2 file header sent to the device as part of an update or recovery boot can be used to create a buffer overflow. The buffer overflow can then be used to launch various exploits. Refer to the attach bulletin for more information.
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Introduction  This document is an extension of section 3.1.3, “Software implementation” from the application note AN12077, using the i.MX RT FlexRAM. It's important that before continue reading this document, you read this application note carefully.  Link to the application note.  Section 3.1.3 of the application note explains how to reallocate the FlexRAM through software within the startup code of your application. This document will go into further detail on all the implications of making these modifications and what is the best way to do it.  Prerequisites RT10xx-EVK  The latest SDK which you can download from the following link:  Welcome | MCUXpresso SDK Builder MCUXpresso IDE Internal SRAM  The amount of internal SRAM varies depending on the RT. In some cases, not all the internal SRAM can be reallocated with the FlexRAM.  RT  Internal SRAM FlexRAM RT1010 Up to  128   KB Up to  128   KB RT1015 Up to  128   KB Up to  128   KB RT1020 Up to  256  KB Up to  256  KB RT1050 Up to 512 KB Up to 512 KB RT1060 Up to 1MB  Up to 512 KB RT1064 Up to 1MB Up to 512 KB   In the case of the RT106x, only 512 KB out of the 1MB of internal SRAM can be reallocated through the FlexRAM as DTCM, ITCM, and OCRAM. The remaining 512 KB are from OCRAM and cannot be reallocated. For all the other RT10xx you can reallocate the whole internal SRAM either as DTCM, ITCM, and OCRAM. Section 3.1.3.1 of the application note explains the limitations of the size when reallocating the FlexRAM. One thing that's important to mention is that the ROM bootloader in all the RT10xx parts  uses the OCRAM, hence you should keep some  OCRAM when reallocating the FlexRAM, this doesn't apply to the RT106x since you will always have the 512 KB of OCRAM that cannot be reallocated. To know more about how many OCRAM each RT family needs please refer to section 2.1.1.1 of the application note. Implementation in MCUXpresso IDE First, you need to import any of the SDK examples into your MCUXpresso IDE workspace. In my case, I imported the igpio_led_output example for the RT1050-EVKB. If you compile this project, you will see that the default configuration for the FlexRAM on the RT1050-EVKB is the following:  SRAM_DTC 128 KB SRAM_ITC 128 KB SRAM_OC 256  KB   Now we need to go to the Reset handler located in the file startup_mimxrt1052.c. Reallocating the FlexRAM has to be done before the FlexRAM is configured, this is why it's done inside the Reset Handler.  The registers that we need to modify to reallocate the FlexRAM are IOMUXC_GPR_GPR16, and IOMUXC_GPR_GPR17. So first we need to have in hand the addresses of these three registers. Register Address IOMUXC_GPR_GPR16 0x400AC040 IOMUXC_GPR_GPR17 0x400AC044   Now, we need to determine how we want to reallocate the FlexRAM to see the value that we need to load into register IOMUXC_GPR_GPR17. In my case, I want to have the following configuration:  SRAM_DTC 256 KB SRAM_ITC 128 KB SRAM_OC 128  KB   When choosing the new sizes of the FlexRAM be sure that you choose a configuration that you can also apply through the FlexRAM fuses, I will explain the reason for this later. The configurations that you can achieve through the fuses are shown in the Fusemap chapter of the reference manual in the table named "Fusemap Descriptions", the fuse name is "Default_FlexRAM_Part".  Based on the following explanation of the IOMUXC_GPR_GPR17 register: The value that I need to load to the register is 0xAAAAFF55. Where the first  4 banks correspond to the 128KB of SRAM_OC, the next 4 banks correspond to the 128KB of SRAM_ITC and the last 8 banks are the 256KB of SRAM_DTC.  Now, that we have all the addresses and the values that we need we can start writing the code in the Reset handler. The first thing to do is load the new value into the register IOMUXC_GPR_GPR17. After, we need to configure register IOMUXC_GPR_GPR16 to specify that the FlexRAM bank configuration should be taken from register IOMUXC_GPR_GPR17 instead of the fuses. Then if in your new configuration of the FlexRAM either the SRAM_DTC or SRAM_ITC are of size 0, you need to disable these memories in the register IOMUXC_GPR_GPR16 . At the end your code should look like the following:    void ResetISR(void) { // Disable interrupts __asm volatile ("cpsid i"); /* Reallocating the FlexRAM */ __asm (".syntax unified\n" "LDR R0, =0x400ac044\n"//Address of register IOMUXC_GPR_GPR17 "LDR R1, =0xaaaaff55\n"//FlexRAM configuration DTC = 265KB, ITC = 128KB, OC = 128KB "STR R1,[R0]\n" "LDR R0,=0x400ac040\n"//Address of register IOMUXC_GPR_GPR16 "LDR R1,[R0]\n" "ORR R1,R1,#4\n"//The 4 corresponds to setting the FLEXRAM_BANK_CFG_SEL bit in register IOMUXC_GPR_GPR16 "STR R1,[R0]\n" #ifdef FLEXRAM_ITCM_ZERO_SIZE "LDR R0,=0x400ac040\n"//Address of register IOMUXC_GPR_GPR16 "LDR R1,[R0]\n" "AND R1,R1,#0xfffffffe\n"//Disabling SRAM_ITC in register IOMUXC_GPR_GPR16 "STR R1,[R0]\n" #endif #ifdef FLEXRAM_DTCM_ZERO_SIZE "LDR R0,=0x400ac040\n"//Address of register IOMUXC_GPR_GPR16 "LDR R1,[R0]\n" "AND R1,R1,#0xfffffffd\n"//Disabling SRAM_DTC in register IOMUXC_GPR_GPR16 "STR R1,[R0]\n" #endif ".syntax divided\n"); #if defined (__USE_CMSIS) // If __USE_CMSIS defined, then call CMSIS SystemInit code SystemInit(); ...‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍   If you compile your project you will see the memory distribution that appears on the console is still the default configuration.  This is because we did modify the Reset handler to reallocate the FlexRAM but we haven't modified the linker file to match these new sizes. To do this you need to go to the properties of your project. Once in the properties, you need to go to C/C++ Build -> MCU settings. Once you are in the MCU settings you need to modify the sizes of the SRAM memories to match the new configuration.  When you make these changes click Apply and Close. After making these changes if you compile the project you will see the memory distribution that appears in the console is now matching the new sizes.  Now we need to modify the Memory Protection Unit (MPU) to match these new sizes of the memories. To do this you need to go to the function BOARD_ConfigMPU inside the file board.c. Inside this function, you need to locate regions 5, 6, and 7 which correspond to SRAM_ITC, SRAM_DTC, and SRAM_OC respectively. Same as for register IOMUXC_GPR_GPR14, if the new size of your memory is not 32, 64, 128, 256, or 512 you need to choose the next greater number.  Y our configuration should look like the following:    /* Region 5 setting: Memory with Normal type, not shareable, outer/inner write back */ MPU->RBAR = ARM_MPU_RBAR(5, 0x00000000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_128KB); /* Region 6 setting: Memory with Normal type, not shareable, outer/inner write back */ MPU->RBAR = ARM_MPU_RBAR(6, 0x20000000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_256KB); /* Region 7 setting: Memory with Normal type, not shareable, outer/inner write back */ MPU->RBAR = ARM_MPU_RBAR(7, 0x20200000U); MPU->RASR = ARM_MPU_RASR(0, ARM_MPU_AP_FULL, 0, 0, 1, 1, 0, ARM_MPU_REGION_SIZE_128KB);‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍   We need to change the image entry address to the Reset handler. To do this, you need to go to the file fsl_flexspi_nor_boot.c inside the xip folder. You need to declare the ResetISR and change the entry address in the image vector table.  Finally, we need to place the stack at the start of the DTCM memory. To do this, we need to go to the properties of your project. From there, we have to C/C++ Build and Manage Linker Script.  From there, we will need to add two more assembly instructions in our ResetISR function. We have to add these two instructions at the beginning of our assembly code:  In the attached c file, you'll find all the assembly instructions mentioned above.  That's it, these are all the changes that you need to make to reallocate the FlexRAM during the startup.  Debug Session  To verify that all the modifications that we just did were correct we will launch the debug session. As soon as we reach the main, before running the application, we will go to the peripheral view to see registers IOMUXC_GPR_GPR16, and IOMUXC_GPR_GPR17 and verify that the values are the correct ones. In register IOMUXC_GPR_GPR16 as shown in the image below we configure the FLEXRAM_BANK_CFG_SEL as 1 to use the use register  IOMUXC_GPR_GPR17  to configure the FlexRAM.  Finally, in register IOMUXC_GPR_GPR17 we can see the value 0xAAAAFF55 that corresponds to the new configuration.  Reallocating the FlexRAM through the Fuses  We just saw how to reallocate the FlexRAM through software by writing some code in the Reset Handler. This procedure works fine, however, it's recommended that you use this approach to test the different sizes that you can configure but once you find the correct configuration for your application we highly recommend that you configure these new sizes through the fuses instead of using the register IOMUXC_GPR_GPR17. There are lots of dangerous areas in reconfiguring the FlexRAM in code. It pretty much all boils down to the fact that any code/data/stack information written to the RAM can end up changing location during the reallocation.  This is the reason why once you find the correct configuration, you should apply it through the fuses. If you use the fuses to configure the FlexRAM, then you don't have the same concerns about moving around code and data, as the fuse settings are applied as a hardware default.  Keep in mind that once you burn the fuses there's no way back! This is why it's important that you first try the configuration through the software method. Once you burn the fuses you won't need to modify the Reset handler, you only need to modify the MPU to change the size of regions as we saw before and the MCU settings of your project to match the new memory sizes that you configured through the fuses.  The fuse in charge of the FlexRAM configuration is Default_FlexRAM_Part, the address of this fuse is 0x6D0[15:13]. You can find more information about this fuse and the different configurations in the Fusemap chapter of the reference manual.  To burn the fuses I recommend using either the blhost or the MCUBootUtility.  Link to download the blhost.  Link to the MCUBootUtility webpage.    I hope you find this document helpful!  Víctor Jiménez 
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RT106L_S voice control system based on the Baidu cloud 1 Introduction     The NXP RT106L and RT106S are voice recognition chip which is used for offline local voice control, SLN-LOCAL-IOT is based on RT106L, SLN-LOCAL2-IOT is a new local speech recognition board based on RT106S. The board includes the murata 1DX wifi/BLE module, the AFE voice analog front end, the ASR recognition system, the external flash, 2 microphones, and the analog voice amplifier and speakers. The voice recognition process for SLN-LOCAL-IOT and SLN-LOCAL2-IOT is different and the new SLN-LOCAL2-IOT is recommended.     This article is based on the voice control board SLN-LOCAL/2-IOT to implement the following block diagram functions: Pic 1 Use the PC-side speed model tool (Cyberon DSMT) to generate WW(wake word) and VC(voice command) Command related voice engine binary files , which will be used by the demo code. This system is mainly used for the Chinese word recognition, when the user says Chinese word: "小恩小恩", it wakes up SLN-LOCAL/2-IOT, and the board gives feedback "小恩来了,请吩咐". Then system enter the voice recognition stage, the user can say the voice recognition command: “开红灯”,“关红灯”,“开绿灯”,“关绿灯”,“灯闪烁”,“开远程灯”,“关远程灯”, after recognition, the board gives feedback "好的". Among them, “开红灯”,“关红灯”,“开绿灯”,“关绿灯”,“灯闪烁”,the five commands are used for the local light switch, while the 开远程灯”,“关远程灯“two commands can through network communication Baidu cloud control the additional MIMXRT1060-EVK development board light switch. SLN-LOCAL/2-IOT through the WIFI module access to the Internet with MQTT protocol to achieve communication with Baidu cloud, when dectect the remote control command, publish the json packets to Baidu cloud, while MIMRT1060-EVK subscribe Baidu cloud data, will receive data from the IOT board and analyze the EVK board led control. PC side can use MQTT.fx software to subscribe the Baidu cloud data, it also can send data to the device to achieve remote control function directly.  Now, will give the detail content about how to use the SLN-LOCAL/2-IOT SDK demo realize the customized Chinese wake command and voice command, and remote control the MIMXRT1060-EVK through the Baidu Cloud.     2 Platform establish 2.1 Used platform SLN-LOCAL-IOT/SLN-LOCAL2-IOT MIMXRT1060-EVK MQTT.fx SDK_2_8_0_SLN-LOCAL2-IOT MCUXPresso IDE Segger JLINK Baidu Smart Cloud: Baidu cloud control+ TTS Audacity:audio file format convert tool WAVToCode:wav convert to the c array code, which used for the demo tilte play MCUBootUtility: used to burn the feedback audio file to the filesystem Cyberon DSMT: wake word and voice detect command generation tool DSMT is the very important tool to realize the wake word and voice dection, the apply follow is: Pic 2 2.2 Baidu Smart cloud 2.2.1 Baidu cloud IOT control system Enter the IoT Hub: https://cloud.baidu.com/product/iot.html     Click used now. 2.2.1.1 Create device project Create a project, select the device type, and enter the project name. Device types can use shadows as images of devices in the cloud to see directly how data is changing. Once created, an endpoint is generated, along with the corresponding address: Pic 3 2.2.1.2 Create Thing model The Thing model is mainly to establish various properties needed in the shadow, such as temperature, humidity, other variables, and the type of value given, in fact, it is also the json item in the actual MQTT communication.    Click the newly created device-type project where you can create a new thing model or shadow: Pic 4    Here create 3 attributes:LEDstatus,humid,temp It is used to represent the led status, humidity, temperature and so on, which is convenient for communication and control between the cloud and RT board. Once created, you get the following picture:   Pic 5   2.2.1.3 Create Thing shadow In the device-type project, you can select the shadow, build your own shadow platform, enter the name, and select the object model as the newly created Thing model containing three properties, after the create, we can get the details of the shadow:   Pic 6 At the same time will also generate the shadow-related address, names and keys, my test platform situation is as follows: TCP Address: tcp://rndrjc9.mqtt.iot.gz.baidubce.com:1883 SSL Address: ssl://rndrjc9.mqtt.iot.gz.baidubce.com:1884 WSS Address: wss://rndrjc9.mqtt.iot.gz.baidubce.com:443 name: rndrjc9/RT1060BTCDShadow key: y92ewvgjz23nzhgn Port 1883, does not support transmission data encryption Port 1884, supports SSL/TLS encrypted transmission Port 8884, which supports wesockets-style connections, also contains SSL encryption. This article uses a 1883 port with no transmission data encryption for easy testing. So far, Baidu cloud device-type cloud shadow has been completed, the following can use MQTTfx tools to connect and test. In practice, it is recommended that customers build their own Baidu cloud connection, the above user key is for reference only.   2.2.2 Online TTS    SLN-LOCAL/2-IOT board recognizes wake-up words, recognition words, or when powering on, you need to add corresponding demo audio, such as: "百度云端语音测试demo ", "小恩来啦!请吩咐“,"好的". These words need to do a text-to-wav audio file synthesis, here is Baidu Smart Cloud's online TTS function, the specific operation can refer to the following documents: https://ai.baidu.com/ai-doc/SPEECH/jk38y8gno   Once the base audio library is opened, use the main.py provided in the link above and modify it to add the Chinese field you want to convert to the file "TEXT" and add the audio file to be converted in "save_file" such as xxx .wav, using the command: python main.py to complete the conversion, and generate the audio format corresponding to the text, such as .mp3, .wav. Pic 7   After getting the wav file, it can’t be used directly, we need to note that for SLN-LOCAL/2-IOT board, you need to identify the audio source of the 48K sample rate with 16bit, so we need to use the Audioacity Audio tool to convert the audio file format to 48K16bit wav. Import 16K16bit wav files generated by Baidu TTS into the Audioacity tool, select project rate of 48Khz, file->export->export as WAV, select encoding as signed 16bit PCM, and regenerate 48Khz16bit wav for use. Pic 8 “百度云端语音测试demo“:Used for power-on broadcasting, demo name broadcasting, it is stored in RT demo code, so you need to convert it to a 16bit C code array and add it to the project. "小恩来啦!请吩咐",“好的“:voice detect feedback, it is saved in the filesystem ZH01,ZH02 area. 2.3 playback audio data prepare and burn   There are two playback audio file, it is "小恩来啦!请吩咐",“好的“,it is saved in the filesystem ZH01,ZH02 area. Filesystem memory map like this: Pic 9 So, we need to convert the 48K16bit wav file to the filesystem needed format, we need to use the official tool::Ivaldi_sln_local2_iot Reference document:SLN-LOCAL2-IOT-DG chapter 10.1 Generating filesystem-compatible files Use bash input the commands like the following picture: Pic10 Use the convert command to get the playback bin file: python file_format.py -if xiaoencoming_48k16bit.wav -of xiaoencoming_48k16bit.bin -ft H At last, it will generate the file: "小恩来啦!请吩咐"->xiaoencoming_48k16bit.bin,burn to flash address 0x6184_0000 “好的”->OK_48k16bit.bin, burn to flash address 0x6180_0000 Then, use MCUBootUtility tool burn the above two file to the related images. Here, take OK_48k16bit.bin as an example, demo enter the serial download mode(J27-0), power off and power on. Flash chip need to select hyper flash IS26KSXXS, use the boot device memory windows, write button to burn the .bin file to the related address, length is 0X40000 Pic11 Pic12 xiaoencoming_48k16bit.bin can use the same method to download to 0x6184_0000,Length is 0X40000.   2.4 Demo audio prepare and add The prepared baiduclouddemo_48K16bit.wav(“百度云端语音测试demo “) need to convert to the 16bit C array code, and put to the project code, calls by the code, this is used for the demo mode play. The convert need to use the WAVToCode, the operation like this: Pic 13 The generated baiducloulddemo_48K16bit.c,add it to the demo project C files: sln_local_iot_local_demo->audio->demos->smart_home.c。 2.5 WW and VC prepare Wake-up word are generated through the cyberon DSMT tool, which supports a wide range of language, customers can request the tool through Figure 2. The Chinese wake-up words and voice command words in this article are also generated through DSMT. DSMT can have multiple groups, group1 as a wake-up word configuration, CmdMapID s 1. Other groups act as voice command words, such as CMD-IOT in this article, cmdMapID=2. Pic 14   Pic 15 Wake word continuously detects the input audio stream, uses group1, and if successfully wakes up, will do the voice command detection uses group2, or other identifying groups as well as custom groups. The wake-up words using the DSMT tool, the configuration are as follows: Pic 16 The WW can support more words, customer can add the needed one in the group 1. Use the DSMT configure VC like this: Pic 17 Then, save the file, code used file are: _witMapID.bin, CMD_IOT.xml,WW.xml. In the generated files, CYBase.mod is the base model, WW.mod is the WW model, CMD_IOT.mod is the VC model. After Pic 16,17, it finishes the WW and VC command prepare, we can put the DSMT project to the RT106S demo project folder: sln_local2_iot_local_demo\local_voice\oob_demo_zh 3 Code prepare Based on the official SLN-LOCAL2-IOT SDK local_demo, the code in this article modifies the Chinese wake-up words and recognition words (or you can build a new customer custom group directly), add local voice detect the led status operations, Then feedback Chinese audio, demo Chinese audio, Wifi network communication MQTT protocol code, and Baidu cloud shadow connection publish. Source reference code SDK path: SDK_2_8_0_SLN-LOCAL2-IOT\boards\sln_local2_iot\sln_voice_examples\local_demo   SDK_2_8_0_SLN-LOCAL2-IOT\boards\sln_local2_iot\sln_boot_apps SLN-LOCAL2-IOT and SLN-LOCAL-IOT code are nearly the same, the only difference is that the ASR library file is different, for RT106S (SLN-LOCAL2-IOT) using SDK it’s own libsln_asr.a library, for RT106L (SLN-LOCAL-IOT) need to use the corresponding libsln_asr_eval.a library.    Importing code requires three projects: local_demo, bootloader, bootstrap. The three projects store in different spaces. See SLN-LOCAL2-IOT-DG .pdf, chapter 3.3 Device memory map    This is the 3 chip project boot process: Pic 18 This document is for demo testing and requires debug, so this article turns off the encryption mechanism, configures bootloader, bootstrap engineering macro definition: DISABLE_IMAGE_VERIFICATION = 1, and uses JLINK to connect SLN-LOCAL/2-IOT's SWD interface to burn code. The following is to add modification code for app local_demo projects. 3.1 sln-local/2-iot code Sln-local-iot, sln-local2-iot platform, the following modification are the same for the two platform. 3.1.1 Voice recognition related code 1)Demo audio play Play content:“百度云端语音测试demo“ sln_local2_iot_local_demo_xe_ledwifi\audio\demos\ smart_home.c content is replaced by the previously generated baiducloulddemo_48K16bit.C. audio_samples.h,modify: #define SMART_HOME_DEMO_CLIP_SIZE 110733 This code is used for the main.c announce_demo API play:         case ASR_CMD_IOT:             ret = demo_play_clip((uint8_t *)smart_home_demo_clip, sizeof(smart_home_demo_clip));   2)command print information #define NUMBER_OF_IOT_CMDS      7 IndexCommands.h static char *cmd_iot_en[] = {"Red led on", "Red led off", "Green led on", "Green led off",                              "cycle led",        "remote led on",         "remote led off"}; static char *cmd_iot_zh[] = {"开红灯", "关红灯", "开绿灯", "关绿灯", "灯闪烁", "开远程灯", "关远程灯"}; Here is the source code modification using IOT, you can actually add your own speech recognition group directly, and add the relevant command identification.   3)sln_local_voice.c Line757 , add led-related notification information in ASR_CMD_IOT mode. oob_demo_control.ledCmd = g_asrControl.result.keywordID[1];     The code is used to obtain the recognized VC command data, and the value of keywordID[1] represents the number. This number can let the code know which detail voice is detected. so that you can do specific things in the app based on the value of ledcmd. The value of keywordID[1] corresponds to Command List in Figure 17. For example, “开远程灯“, if woke up, and recognized "开远程灯", then keywordID[1] is 5, and will transfer to oob_demo_control.ledCmd, which will be used in the appTask API to realize the detail control. 4) main.c void appTask(void *arg) Under case kCommandGeneric: if the language is Chinese, then add the recognition related control code, at first, it will play the feedback as “好的”. Then, it will check the voice detect value, give the related local led control. else if (oob_demo_control.language == ASR_CHINESE) { // play audio "OK" in Chinese #if defined(SLN_LOCAL2_RD) ret = audio_play_clip((uint8_t *)AUDIO_ZH_01_FILE_ADDR, AUDIO_ZH_01_FILE_SIZE); #elif defined(SLN_LOCAL2_IOT) ret = audio_play_clip(AUDIO_ZH_01_FILE); #endif //kerry add operation code==================================================begin RGB_LED_SetColor(LED_COLOR_OFF); if (oob_demo_control.ledCmd == LED_RED_ON) { RGB_LED_SetColor(LED_COLOR_RED); vTaskDelay(5000); } else if (oob_demo_control.ledCmd == LED_RED_OFF) { RGB_LED_SetColor(LED_COLOR_OFF); vTaskDelay(5000); } else if (oob_demo_control.ledCmd == LED_BLUE_ON) { RGB_LED_SetColor(LED_COLOR_BLUE); vTaskDelay(5000); } else if (oob_demo_control.ledCmd == LED_BLUE_OFF) { RGB_LED_SetColor(LED_COLOR_OFF); vTaskDelay(5000); } else if (oob_demo_control.ledCmd == CYCLE_SLOW) { for (int i = 0; i < 3; i++) { RGB_LED_SetColor(LED_COLOR_RED); vTaskDelay(400); RGB_LED_SetColor(LED_COLOR_OFF); RGB_LED_SetColor(LED_COLOR_GREEN); vTaskDelay(400); RGB_LED_SetColor(LED_COLOR_OFF); RGB_LED_SetColor(LED_COLOR_BLUE); vTaskDelay(400); } } … } In addition to local voice recognition control, this article also add remote control functions, mainly through wifi connection, use the mqtt protocol to connect Baidu cloud server, when local speech recognition get the remote control command, it publish the corresponding control message to Baidu cloud, and then the cloud send the message to the client which subscribe this message,  after the client get the message, it will refer to the message content do the related control.   3.1.3 Network connection code 1)sln_local2_iot_local_demo_xe_ledwifi\lwip\src\apps\mqtt     Add mqtt.c 2)sln_local2_iot_local_demo_xe_ledwifi\lwip\src\include\lwip\apps Add mqtt.h, mqtt_opts.h,mqtt_prv.h The related mqtt driver is from the RT1060 sdk, which already added in the attachment project. 3)sln_tcp_server.c   Add MQTT application layer API function code, client ID, server host, MQTT server port number, user name, password, subscription topic, publishing topic and data, etc., more details, check the attachment code.    The MQTT application code is ported from the mqtt project of the RT1060 SDK and added to the sln_tcp_server.c. TCP_OTA_Server function is used to initialize the wifi network, realize wifi connection, connect to the network, resolve Baidu cloud server URL to get IP, and then connect Baidu cloud server through mqtt, after the successful connection, publish the message at first, so that after power-up through mqttfx to see whether the power on network publishing message is successful. TCP_OTA_Server function code is as follows: static void TCP_OTA_Server(void *param) //kerry consider add mqtt related code { err_t err = ERR_OK; uint8_t status = kCommon_Failed; #if USE_WIFI_CONNECTION /* Start the WiFi and connect to the network */ APP_NETWORK_Init(); while (status != kCommon_Success) { status_t statusConnect; statusConnect = APP_NETWORK_Wifi_Connect(true, true); if (WIFI_CONNECT_SUCCESS == statusConnect) { status = kCommon_Success; } else if (WIFI_CONNECT_NO_CRED == statusConnect) { APP_NETWORK_Uninit(); /* If there are no credential in flash delete the TPC server task */ vTaskDelete(NULL); } else { status = kCommon_Failed; } } #endif #if USE_ETHERNET_CONNECTION APP_NETWORK_Init(true); #endif /* Wait for wifi/eth to connect */ while (0 == get_connect_state()) { /* Give time to the network task to connect */ vTaskDelay(1000); } configPRINTF(("TCP server start\r\n")); configPRINTF(("MQTT connection start\r\n")); mqtt_client = mqtt_client_new(); if (mqtt_client == NULL) { configPRINTF(("mqtt_client_new() failed.\r\n");) while (1) { } } if (ipaddr_aton(EXAMPLE_MQTT_SERVER_HOST, &mqtt_addr) && IP_IS_V4(&mqtt_addr)) { /* Already an IP address */ err = ERR_OK; } else { /* Resolve MQTT broker's host name to an IP address */ configPRINTF(("Resolving \"%s\"...\r\n", EXAMPLE_MQTT_SERVER_HOST)); err = netconn_gethostbyname(EXAMPLE_MQTT_SERVER_HOST, &mqtt_addr); configPRINTF(("Resolving status: %d.\r\n", err)); } if (err == ERR_OK) { configPRINTF(("connect to mqtt\r\n")); /* Start connecting to MQTT broker from tcpip_thread */ err = tcpip_callback(connect_to_mqtt, NULL); configPRINTF(("connect status: %d.\r\n", err)); if (err != ERR_OK) { configPRINTF(("Failed to invoke broker connection on the tcpip_thread: %d.\r\n", err)); } } else { configPRINTF(("Failed to obtain IP address: %d.\r\n", err)); } int i=0; /* Publish some messages */ for (i = 0; i < 5;) { configPRINTF(("connect status enter: %d.\r\n", connected)); if (connected) { err = tcpip_callback(publish_message_start, NULL); if (err != ERR_OK) { configPRINTF(("Failed to invoke publishing of a message on the tcpip_thread: %d.\r\n", err)); } i++; } sys_msleep(1000U); } vTaskDelete(NULL); } Please note the following published json data, it can’t be publish directly in the code. {   "reported": {     "LEDstatus": false,     "humid": 88,     "temp": 22   } } Which need to use this web https://www.bejson.com/ realize the json data compression and convert: {\"reported\" : {     \"LEDstatus\" : true,     \"humid\" : 88,     \"temp\" : 11    } }   4)main appTask Under case kCommandGeneric: , if the language is Chinese, then add the corresponding voice recognition control code. "开远程灯": turn on the local yellow light, publish the “remote led on” mqtt message to Baidu cloud, control remote 1060EVK board lights on. "关远程灯": turn on the local white light, publish the “remote led off” mqtt message to Baidu cloud, control the remote 1060EVK board light off. Related operation code: else if (oob_demo_control.ledCmd == LED_REMOTE_ON) { RGB_LED_SetColor(LED_COLOR_YELLOW); vTaskDelay(5000); err_t err = ERR_OK; err = tcpip_callback(publish_message_on, NULL); if (err != ERR_OK) { configPRINTF(("Failed to invoke publishing of a message on the tcpip_thread: %d.\r\n", err)); } } else if (oob_demo_control.ledCmd == LED_REMOTE_OFF) { RGB_LED_SetColor(LED_COLOR_WHITE); vTaskDelay(5000); err_t err = ERR_OK; err = tcpip_callback(publish_message_off, NULL); if (err != ERR_OK) { configPRINTF(("Failed to invoke publishing of a message on the tcpip_thread: %d.\r\n", err)); } } 3.2 MIMXRT1060-EVK code The main function of the MIMXRT1060-EVK code is to configure another client in the cloud, subscribe to the message published by SLN-LOCAL/2-IOT which detect the remote command, and then the LED on the control board is used to test the voice recognition remote control function, this code is based on Ethernet, through the Ethernet port on the board, to achieve network communication, and then use mqtt to connect baidu cloud, and subscribe the message from local2, This enables the reception and execution of the Local2 command. the network code part is similar to SLN-LOCAL2-IOT board network code, the servers, cloud account passwords, etc. are all the same, the main function is to subscribe messages. See the code from attachment RT1060, lwip_mqtt_freertos.c file. When receives data published by the server, it needs to do a data analysis to get the status of the led light and then control it. Normal data from Baidu cloud shadow sent as follows Received 253 bytes from the topic "$baidu/iot/shadow/RT1060BTCDShadow/update/accepted": "{"requestId":"2fc0ca29-63c0-4200-843f-e279e0f019d3","reported":{"LEDstatus":false,"humid":44,"temp":33},"desired":{},"lastUpdatedTime":{"reported":{"LEDstatus":1635240225296,"humid":1635240225296,"temp":1635240225296},"desired":{}},"profileVersion":159}" Then you need to parse the data of LEDstatus from the received data, whether it is false or true. Because the amount of data is small, there is no json-driven parsing here, just pure data parsing, adding the following parsing code to the mqtt_incoming_data_cb function: mqtt_rec_data.mqttindex = mqtt_rec_data.mqttindex + len; if(mqtt_rec_data.mqttindex >= 250) { PRINTF("kerry test \r\n"); PRINTF("idex= %d", mqtt_rec_data.mqttindex); datap = strstr((char*)mqtt_rec_data.mqttrecdata,"LEDstatus"); if(datap != NULL) { if(!strncmp(datap+11,strtrue,4))//char strtrue[]="true"; { GPIO_PinWrite(GPIO1, 3, 1U); //pull high PRINTF("\r\ntrue"); } else if(!strncmp(datap+11,strfalse,5))//char strfalse[]="false"; { GPIO_PinWrite(GPIO1, 3, 0U); //pull low PRINTF("\r\nfalse"); } } mqtt_rec_data.mqttindex =0; It use the strstr search the “LEDstatus“ in the received data, and get the pointer position, then add the fixed length to get the LED status is true or flash. If it is true, turn on the led, if it is false, turn off the led. 4 Test Result    This section gives the test results and video of the system. Before testing the voice function, first use MQTTfx to test baidu cloud connection, release, subscription is no problem, and then test sln-local2-iot combined with mimxrt1060-evk voice wake-up recognition and remote control functions.    For SLN-LOCAL2-IOT wifi hotspot join, enter the command in the print terminal: setup AWS kerry123456   4.1 MQTT.fx test baidu cloud connection MQTT.fx is an EclipsePaho-based MQTT client tool written in the Java language that supports subscription and publishing of messages through Topic.    4.1.1 MQTT fx configuration     Download and install the tool, then open it, at first, need to do the configuration, click edit connection: Pic19 Profile name:connect name Profile type: MQTT broker Broker address: It is the baidu could generated broker address, with 1883 no encryption transfer. Broker port:1883 No encryption Client ID: RT1060BTCDShadow, here need to note, this name should be the same as the could shadow name, otherwise, on the baidu webpage, the connection is not be detected. If this Client ID name is the same as the shadow name, then when the MQTT fx connect, the online side also can see the connection is OK. User credentials: add the thing User name and password from the baidu cloud. After the configuration, click connect, and refresh the website. Before conection: Pic 20 After connection: Pic 21 4.1.2 MQTT fx subscribe When it comes to subscription publishing, what is the topic of publishing subscriptions?  Here you can open your thing shadow, select the interaction, and see that the page has given the corresponding topic situation: Pic 22 Subscribe topic is: $baidu/iot/shadow/RT1060BTCDShadow/update/accepted  Publish topic is: $baidu/iot/shadow/RT1060BTCDShadow/update Pic 23 Click subscribe, we can see it already can used to receive the data.   4.1.3 MQTT fx publish Publish need to input the topic: $baidu/iot/shadow/RT1060BTCDShadow/update It also need to input the content, it will use the json content data. Pic 24 Here, we can use this json data: {   "reported" : {     "LEDstatus" : true,     "humid" : 88,     "temp" : 11    } } The json data also can use the website to check the data: https://www.bejson.com/jsonviewernew/ Pic 25 Input the publish data, and click pubish button: Pic 26 4.1.4 Publish data test result   Before publish, clean the website thing data: Pic 27 MQTT fx publish data, then check the subscribe data and the website situation: Pic 28 We can see, the published data also can be see in the website and the mqttfx subscribe area. Until now, the connection, data transfer test is OK.   4.2 Voice recognition and remote control test This is the device connection picture: Pic 29 4.2.1 voice recognition local control Pic 30 This is the SLN-LOCAL2-IOT print information after recognize the voice WW and VC. Red led on: led cycle: 4.2.2 voice recognition remote control   Following test, wakeup + remote on, wakeup+remote off, and also give the print result and the video. Pic 31 remote control:  
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  RT1176 has two core. Normally, the CM7 core is the main core. When boot up, CM7 will boot up first. Then it will copy CM4’s image to RAM and kick off CM4 core. The details can be found in AN13264. In RT1176, CM4 has 128K ITCM and 128K DTCM. This space is not big. It is enough for CM4 to do some auxiliary work. But sometimes, customer need CM4 to do more. For example, the CM7 may run an ML algorithm and CM4 to deal with USB/ENET and camera. That need more code space than 128K. In this case, CM4 image should be moved to OCRAM1/2 or SDRAM. OCRAM and SDRAM are both connect to a NIC-301 AXI bus arbiter IP. They have similar performance and character. This article will try to use SDRAM because it is more difficult to move to. Before moving, customer should know an important thing. the R/W speed of CM4 accessing OCRAM/SDRAM is slow. Because the CM4 requests data from SDRAM through XB (LPSR domain - AHB protocol) and then through NIC (WAKEUPMIX domain AXI protocol) and the clock limitation is BUS / BUS_LPSR. If both code and data placed in SDRAM the performance will significantly be reduced. SDRAM is accessible only via SYSTEM bus (so, in such case no harward possible). If any other bus masters are accessing the same memory the performance is even more degraded due to arbitration (on XB or NIC). So, user should arrange the whole memory space very well to eliminate access conflict.   Prepare for the work 1.1 Test environment: • SDK: 2.9.1 for i.MX RT1170 • MCUXpresso: 11.4.0 Example: SDK_root\boards\evkmimxrt1170\multicore_examples\hello_world . Set hardware and software Set the board to XIP boot mode by setting SW1 to OFF OFF ON OFF. Import the hello_world example from SDK. Build the project.   Moving to SDRAM for debug option In CM7 project, add SDRAM space in properties->MCU settings->Memory detail   Then in properties->settings->Multicore, change the CM4 master memory region to SDRAM.   Unlike other IDE, MCUXpresso can wake up M4 project thread and download M4 image by IDE itself. it calls implicit. This field tell IDE where to place CM4 image. In properties->settings->Preprocessor, add XIP_BOOT_HEADER_DCD_ENABLE. This is to add DCD to image's head. DCD can be used to program the SDRAM controller for optimal settings, improving the boot performance. Next, switch to CM4 project. Add SDRAM space to memory table, just like what we do in CM7 project.     In properties-> Managed Linker Script, it’s better to announce Heap and stack space in DTCM. It also can be placed in SDRAM, but this should be careful. After that, we can start debugging. You can see that the SDRAM has been filled with CM4 image. Click Resume button, the CM4 project will stop at the beginning of the Main.   Moving to SDRAM for release option To compile the project in release mode, CORE1_IMAGE_COPY_TO_RAM should be added to Defined symbols table. But that is not enough. The CM7 project of SDK doesn’t copy the CM4 image. We must add this to CM7 project. 3.1 Create a new file named incbin.S. This is the code .section .core_m4slave , "ax" @progbits @preinit_array .global dsp_text_image_start .type dsp_text_image_start, %object .align 2 dsp_text_image_start: .incbin "evkmimxrt1170_hello_world_cm4.bin" .global dsp_text_image_end .type dsp_text_image_end, %object dsp_text_image_end: .global dsp_data_image_start .type dsp_data_image_start, %object .align 2 dsp_ncache_image_end: .global dsp_text_image_size .type dsp_text_image_size, %object .align 2 dsp_text_image_size: .int dsp_text_image_end - dsp_text_image_start 3.2 In hello_world_core0.c, add these code #ifdef CORE1_IMAGE_COPY_TO_RAM extern const char dsp_text_image_start[]; extern int dsp_text_image_size; #define CORE1_IMAGE_START ((uint32_t *)dsp_text_image_start) #define CORE1_IMAGE_SIZE ((int32_t)dsp_text_image_size) #endif 3.3 Right click the evkmimxrt1170_hello_world_cm4.axf in Project Explorer window, select Binary Utilities->Create Binary. A binary file called evkmimxrt1170_hello_world_cm4.bin will be created. Copy it to the release folder of CM7 project. If you want this work to be done automatically, you can add the command to properties->settings->Build stepes->Post-build steps   Compile the project and download. Press reset button. After a while, you will see a small led blinking. This led is driven by CM4. Debug the CM4 project on SDRAM only As we know that CM4 can debug alone without CM7 starting. But that is in ITCM and DTCM. Can it also work in SDRAM. Yes, but the original debug script file is not support this function. I attached a new script file. It can initialize SDRAM before downloading CM4 code. Replace the old .scp file with this one, nothing else need to be changed.
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RT1015 APP BEE encryption operation method 1 Introduction     NXP RT product BEE encryption can use the master key(the fixed OTPMK SNVS key) or the User Key method. The Master key method is the fixed key, and the user can’t modify it, in the practical usage, a lot of customers need to define their own key, in this situation, customer can use the use key method. This document will take the NXP RT1015 as an example, use the flexible user key method to realize the BEE encryption without the HAB certification.     The BEE encryption test will on the MIMXRT1015-EVK board, mainly three ways to realize it: MCUBootUtility tool , the Commander line method with MFGTool and the MCUXPresso Secure Provisioning tool to download the BEE encryption code.   2 Preparation 2.1  Tool preparation    MCUBootUtility download link:     https://github.com/JayHeng/NXP-MCUBootUtility/archive/v2.3.0.zip    image_enc2.zip download link : https://www.cnblogs.com/henjay724/p/10189602.html After unzip the image_enc2.zip, will get the image_enc.exe, put it under the MCUBootUtility tool folder: NXP-MCUBootUtility-2.3.0\tools\image_enc2\win RT1015 SDK download link : https://mcuxpresso.nxp.com/ 2.2 app file preparation    This document will use the iled_blinky MCUXpresso IDE project in the SDK_2.8.0_EVK-MIMXRT1015 as an example, to generate the app without the XIP boot header. Generate evkmimxrt1015_igpio_led_output.s19 will be used later. Fig 1 3 MCUbootUtility BEE encryption with user key   This chapter will use MCUBootUtility tool to realize the app BEE encryption with the user key, no HAB certification. 3.1 MIMXRT1015-EVK original fuse map     Before doing the BEE encryption, readout the original fuse map, it will be used to compare with the fuse map after the BEE encryption operation. Use the MCUbootUtility tool effuse operation utility page can read out all the fuse map. Fig 2 3.2 MCUbootutility BEE encryption configuration Fig 3 This document just use the BEE encryption, without the HAB certificate, so in the “Enable Certificate for HAB(BEE/OTFAD) encryption”, select: No.    Check Fig4, Select the”Key storage region” as flexible user keys, the protect region 0 start from 0X60001000, length is 0x2000, didn’t encrypt all the app region, just used to compare the original app with the BEE encrypted app code, we can find from 0X60003000, the code will be the plaintext code. But from 0X60001000 to 0X60002FFF will be the BEE encrypted code. After the configuration, Click the button”all in one action”, burn the code to the external QSPI flash. Fig 4 Fig 5 SW_GP2 region in the fuse can be burned separated, click the button”burn DEK data” is OK. Fig 6 Then read out all the fuse map again, we can find in the cfg1, BEE_KEY0_SEL is SW-GP2, it defines the BEE key is using the flexible use key method, not the fixed master key. Fig 7 Then, readout the BEE burned code from the flash with the normal burned code from the flash, and compare with it, the detail situation is: Fig 8 Fig 9 Fig 10 Fig 11 Fig 12    We can find, after the BEE encryption, 0X60001000 to 0X60002FFF is the encrypted code, 0X6000400 area add the EKIB0 data, 0X6000480 area add the EPRDB0 data. Because we just select the BEE engine 0, no BEE engine 1, then we can find 0X60000800 EKIB1 and EPRDB1 are all 0, not the valid data. From 0X60003000, we can find the app data is the plaintext data, the same result with our expected BEE configuration app encrypted range.    Until now, we already realize the MCUBootUtility tool BEE encryption. Exit the serial download mode, configure the MIMXRT10150-EVK on board SW8 as: 1-ON, 2-OFF, 3-ON, 4-OFF, reset the board, we can find the on board user LED is blinking, the BEE encrypted code is working. 4 BEE encryption with the Commander line mode    In practical usage, a lot of customers also need to use the commander line mode to realize the BEE encryption operation, and choose MFGTool download method. So this document will also give the way how to use the SDK SDK_2.8.0_EVK-MIMXRT1015\middleware\mcu-boot\bin\Tools and image_enc tool to realize the BEE commander line method encryption operation, then use the MFGTool download the BEE encrypted code to the RT1015 external QSPI flash.     Because from SDK2.8.0, blhost, elftosb related tools will not be packed in the SDK middleware directly, the customer need to download it from this link: www.nxp.com/mcuboot   4.1 Commander line file preparation     Prepare one folder, put elftosb.exe, image_enc.exe , app file evkmimxrt1015_iled_blinky_0x60002000.s19 , RemoveBinaryBytes.exe to that folder. RemoveBinaryBytes.exe is used to modify the bin file, it can be downloaded from this link: https://community.nxp.com/servlet/JiveServlet/download/539270-1-478426/Test.zip    Then prepare the following files: imx-flexspinor-normal-unsigned.bd imxrt1015_app_flash_sb_gen.bd burn_fuse.bd 4.1.1 imx-flexspinor-normal-unsigned.bd imx-flexspinor-normal-unsigned.bd files is used to generate the app file evkmimxrt1015_iled_blinky_0x60002000.s19 related boot .bin file, which is include the IVT header code: ivt_evkmimxrt1015_iled_blinky_0x60002000.bin ivt_evkmimxrt1015_iled_blinky_0x60002000_nopadding.bin bd file content is   /*********************file start****************************/ options {     flags = 0x00;     startAddress = 0x60000000;     ivtOffset = 0x1000;     initialLoadSize = 0x2000;     //DCDFilePath = "dcd.bin";     # Note: This is required if the default entrypoint is not the Reset_Handler     #       Please set the entryPointAddress to Reset_Handler address     // entryPointAddress = 0x60002000; }   sources {     elfFile = extern(0); }   section (0) { } /*********************file end****************************/‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍   4.1.2 imxrt1015_app_flash_sb_gen.bd    This file is used to configure the external QSPI flash, and realize the program function, normally use this .bd file to generate the .sb file, then use the MFGtool select this .sb file and download the code to the external flash.   /*********************file start****************************/ sources {     myBinFile = extern (0); }   section (0) {     load 0xc0000007 > 0x20202000;     load 0x0 > 0x20202004;     enable flexspinor 0x20202000;     erase  0x60000000..0x60005000;     load 0xf000000f > 0x20203000;     enable flexspinor 0x20203000;     load  myBinFile > 0x60000400; } /*********************file end****************************/‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍   4.1.3 burn_fuse.bd      BEE encryption operation need to burn the fuse map, but the fuse data is the one time operation from 0 to 1, here will separate the burn fuse operation, only do the burn fuse operation during the first time which the RT chip still didn’t be modified the fuse map. Otherwise, in the next operation, just modify the app code, don’t need to burn the fuse. Burn_fuse.bd is mainly used to configure the fuse data which need to burn the related fuse map, then generate the .sb file, and use the MFGTool burn it with the app together.   /*********************file start****************************/ # The source block assign file name to identifiers sources { }   constants { }   #                !!!!!!!!!!!! WARNING !!!!!!!!!!!! # The section block specifies the sequence of boot commands to be written to the SB file # Note: this is just a template, please update it to actual values in users' project section (0) {     # program SW_GP2     load fuse 0x76543210 > 0x29;     load fuse 0xfedcba98 > 0x2a;     load fuse 0x89abcdef > 0x2b;     load fuse 0x01234567 > 0x2c;         # Program BEE_KEY0_SEL     load fuse 0x00003000 > 0x6;     } /*********************file end****************************/‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ 4.2 BEE commander line operation steps  Create the rt1015_bee_userkey_gp2.bat file, the content is:   elftosb.exe -f imx -V -c imx-flexspinor-normal-unsigned.bd -o ivt_evkmimxrt1015_iled_blinky_0x60002000.bin evkmimxrt1015_iled_blinky_0x60002000.s19 image_enc.exe hw_eng=bee ifile=ivt_evkmimxrt1015_iled_blinky_0x60002000.bin ofile=evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted.bin base_addr=0x60000000 region0_key=0123456789abcdeffedcba9876543210 region0_arg=1,[0x60001000,0x2000,0] region0_lock=0 use_zero_key=1 is_boot_image=1 RemoveBinaryBytes.exe evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted.bin evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted_remove1K.bin 1024 elftosb.exe -f kinetis -V -c program_imxrt1015_qspi_encrypt_sw_gp2.bd -o boot_image_encrypt.sb evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted_remove1K.bin elftosb.exe -f kinetis -V -c burn_fuse.bd -o burn_fuse.sb pause‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Fig 13 Fig 14 it mainly has 5 steps: 4.2.1 elftosb generate app file with IVT header elftosb.exe -f imx -V -c imx-flexspinor-normal-unsigned.bd -o ivt_evkmimxrt1015_iled_blinky_0x60002000.bin evkmimxrt1015_iled_blinky_0x60002000.s19 After this commander, will generate two files with the IVT header: ivt_evkmimxrt1015_iled_blinky_0x60002000.bin,ivt_evkmimxrt1015_iled_blinky_0x60002000_nopadding.bin Here, we will use the ivt_evkmimxrt1015_iled_blinky_0x60002000.bin 4.2.2 image_enc generate the app related BEE encrypted code image_enc.exe hw_eng=bee ifile=ivt_evkmimxrt1015_iled_blinky_0x60002000.bin ofile=evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted.bin base_addr=0x60000000 region0_key=0123456789abcdeffedcba9876543210 region0_arg=1,[0x60001000,0x2000,0] region0_lock=0 use_zero_key=1 is_boot_image=1 About the keyword meaning in the image_enc, we can run the image_enc directly to find it. Fig 15 This commander line run result will be the same as the MCUBootUtility configuration. The encryption area from 0X60001000, the length is 0x2000, more details, can refer to Fig 4. After the operation, we can get this file: evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted.bin   4.2.3 RemoveBinaryBytes remove the BEE encrypted file above 1024 bytes RemoveBinaryBytes.exe evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted.bin evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted_remove1K.bin 1024 This commaner will used to remove the BEE encrypted file, the above 0X400 length data, after the modification, the encrypted file will start from EKIB0 directly. After running it, will get this file : evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted_remove1K.bin   4.2.4 elftosb generate BEE encrypted app related sb file elftosb.exe -f kinetis -V -c program_imxrt1015_qspi_encrypt_sw_gp2.bd -o boot_image_encrypt.sb evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted_remove1K.bin This commander will use evkmimxrt1015_iled_blinky_0x60002000_bee_encrypted_remove1K.bin and program_imxrt1015_qspi_encrypt_sw_gp2.bd to generate the sb file which can use the MFGTool download the code to the external flash After running it, we can get this file: boot_image_encrypt.sb   4.2.5 elftosb generate the burn fuse related sb file elftosb.exe -f kinetis -V -c burn_fuse.bd -o burn_fuse.sb This commander is used to generate the BEE code related fuse bits sb file, this sb file will be burned together with the boot_image_encrypt.sb in the MFGTool. But after the fuse is burned, the next app modify operation don’t need to add the burn fuse operation, can download the add directly. After running it, can get this file: burn_fuse.sb   4.3 MFGTool downloading   MIMXRT1015-EVK board enter the serial downloader mode, find two USB cable, plug it in J41 and J9 to the PC. MFGTool can be found in folder: SDK_2.8.0_EVK-MIMXRT1015\middleware\mcu-boot\bin\Tools\mfgtools-rel   If need to burn the burn_fuse.sb, need to modify the ucl2.xml, folder path: \SDK_2.8.0_EVK-MIMXRT1015\middleware\mcu-boot\bin\Tools\mfgtools-rel\Profiles\MXRT1015\OS Firmware    Add the following list to realize it. <LIST name="MXRT1015-beefuse_DevBoot" desc="Boot Flashloader"> <!-- Stage 1, load and execute Flashloader -->        <CMD state="BootStrap" type="boot" body="BootStrap" file="ivt_flashloader.bin" > Loading Flashloader. </CMD>     <CMD state="BootStrap" type="jump"  onError = "ignore"> Jumping to Flashloader. </CMD> <!-- Stage 2, burn BEE related fuse using Flashloader -->      <CMD state="Blhost" type="blhost" body="get-property 1" > Get Property 1. </CMD> <!--Used to test if flashloader runs successfully-->     <CMD state="Blhost" type="blhost" body="receive-sb-file \"Profiles\\MXRT1015\\OS Firmware\\burn_fuse.sb\"" > Program Boot Image. </CMD>     <CMD state="Blhost" type="blhost" body="reset" > Reset. </CMD> <!--Reset device--> <!-- Stage 3, Program boot image into external memory using Flashloader -->       <CMD state="Blhost" type="blhost" body="get-property 1" > Get Property 1. </CMD> <!--Used to test if flashloader runs successfully-->     <CMD state="Blhost" type="blhost" timeout="15000" body="receive-sb-file \"Profiles\\MXRT1015\\OS Firmware\\ boot_image_encrypt.sb\"" > Program Boot Image. </CMD>     <CMD state="Blhost" type="blhost" body="Update Completed!">Done</CMD> </list>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍     If already have burned the Fuse bits, just need to update the app, then we can use MIMXRT1015-DevBoot   <LIST name="MXRT1015-DevBoot" desc="Boot Flashloader"> <!-- Stage 1, load and execute Flashloader -->        <CMD state="BootStrap" type="boot" body="BootStrap" file="ivt_flashloader.bin" > Loading Flashloader. </CMD>     <CMD state="BootStrap" type="jump"  onError = "ignore"> Jumping to Flashloader. </CMD> <!-- Stage 2, Program boot image into external memory using Flashloader -->       <CMD state="Blhost" type="blhost" body="get-property 1" > Get Property 1. </CMD> <!--Used to test if flashloader runs successfully-->     <CMD state="Blhost" type="blhost" timeout="15000" body="receive-sb-file \"Profiles\\MXRT1015\\OS Firmware\\boot_image.sb\"" > Program Boot Image. </CMD>     <CMD state="Blhost" type="blhost" body="Update Completed!">Done</CMD> </list>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Which detail list is select, it is determined by the cfg.ini name item [profiles] chip = MXRT1015 [platform] board = [LIST] name = MXRT1015-DevBoot‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍   Because my side do the MCUbootUtility operation at first, then the fuse is burned, so in the commander line, I just use MXRT1015-DevBoot download the app.sb Fig 16 We can find, it is burned successfully, click stop button, Configure the MIMXRT1015-EVK on board SW8 as 1-ON,2-OFF,3-ON,4-OFF, reset the board, we can find the on board LED is blinking, it means the commander line also can finish the BEE encryption successfully.   5  MCUXpresso Secure Provisioning BEE unsigned operation      This part will use the MCUXPresso Secure Provisioning tool to finish the BEE unsigned image downloading BEE unsigned image is just use the BEE, no certification. 5.1 Tool downloading MCUXPresso Secure Provisioning download link is: https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools-/mcuxpresso-secure-provisioning-tool:MCUXPRESSO-SECURE-PROVISIONING Download it and install it, it’s better to read the tool document at first: C:\nxp\MCUX_Provi_v2.1\MCUXpresso Secure Provisioning Tool.pdf 5.2 Operation Steps Step1: Create the new tool workspace File->New Workspace, select the workspace path. Fig 17 Step2: Chip boot related configuration Fig 18 Here, please note, the boot type need to select as XIP Encrypted(BEE User Keys) unsigned, which is not added the HAB certification function. Step3: USB connection Connect Select USB, it will use the USB HID to connect the board in serial download mode, so the MIMXRT1015-EVK board need insert the USB port to the J9, and the board need to enter the serial download mode: SW8:1-ON,2-OFF,3-OFF,4-ON Connect Test Connection Button, the connection result is: Fig 19 We can see the connection is OK, due to this board has done the BEE operation in the previous time, so the related BEE fuse is burned, then we can find the BEE key and the key source SW-GP2 fuse already has data. Step4: image selection Just like the previous content, prepare one app image. Step 5: XIP Encryption(BEE user keys) configuration Fig 20 Here, it will need to select which engine, we select Engine0, BEE engine KEY use zero key, key source use the SW-GP2, then the detail user key data: 0123456789abcdeffedcba9876543210 Will be wrote to the swGp2 fuse area. Because my board already do that fuse operation, so here it won’t burn the fuse again. Step 6: build image Fig 21 Here, we will find, after this operation, the tool will generate 5 files: 1) evkmimxrt1015_iled_blinky_0x60002000.bin 2) evkmimxrt1015_iled_blinky_0x60002000_bootable.bin 3) evkmimxrt1015_iled_blinky_0x60002000_bootable_nopadding.bin 4) evkmimxrt1015_iled_blinky_0x60002000_nopadding.bin 5) evkmimxrt1015_iled_blinky_0x60002000_nopadding_ehdr0.bin 1), 2), 3) is the plaintext file, 1) and 2) are totally the same, this file maps the data from base 0, from 0x1000 it is IVT+BD+DCD, from 0X2000 is app, so these files are the whole image, just except the FlexSPI Configuration block data, which should put from base address 0. 3) it is the 2) image just delete the first 0X1000 data, and just from IVT+BD+DCD+app. 4) ,5) is the BEE encrypted image, 4) is related to 3), just the BEE encrypted image, 5) is the EKIB0, EPRDB0 data, which should be put in the real address from 0X60000400, it is the BEE Encrypted Key Info Block 0 and Encrypted Protection Region Descriptor Block 0 data, as we just use the engine0, so just have the engin0 data. In fact, the BEE whole image contains : FlexSPI Configuration block data +IVT+BD+DCD+APP FlexSPI Configuration block data is the plaintext, but from 0X60001000 to 0X60002fff is the encrypted image. Step 7: burn the encrypted image Fig 22 Click the Write Image button, to finish the BEE image program. Here, just open the bee_user_key0.bin, we will find, it is just the user key data which is defined in Fig 20, which also should be written to the swGp2 fuse. Check the log, we will find it mainly these process: Erase image from 0x60000000, length is 0x5000. Generate the flexSPI Configuration block data, and download from 0x60000000 Burn evkmimxrt1015_iled_blinky_0x60002000_nopadding_ehdr0.bin to 0X60000400 Burn evkmimxrt1015_iled_blinky_0x60002000_nopadding.bin to 0x60001000 Modify the MIMXRT1015-EVK SW8:1-ON,2-OFF,3-ON,4-OFF, reset or repower on the board, we will find the on board led is blinking, it means the bee encrypted image already runs OK. Please note: SW8_1 is the Encrypted XIP pin, it must be enable, otherwise, even the BEE encrypted image is downloaded to the external flash, but the boot will be failed, as the ROM will use normal boot not the BEE encrypted boot. So, SW8_1 should be ON.    Following pictures are the BEE encrypted image readout file to compare with the tool generated files. Fig 23 Fig 24 Fig 25 Fig 26 Fig 27 About the MCUBootUtility lack the BEE tool image_enc.exe, we also can use the MCUXPresso Secure Provisioning’s image_enc.exe: Copy: C:\nxp\MCUX_Provi_v2.1\bin\tools\image_enc\win\ image_enc.exe To the MCUbootUtility folder: NXP-MCUBootUtility-3.2.0\tools\image_enc2\win Attachment also contains the video about this tool usage operation.    
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When: TUESDAY, SEPTEMBER 14TH AT 11 AM EST Click here to register today.   Topic of discussion From consumer to industrial devices, a paradigm shift has already begun. Our everyday experiences with smartphones are driving the demand for higher performance, more connectivity, and an exceptional user experience as the cornerstones of the embedded products we use. But how can you make it easier to take your product to the next level? Join NXP and Crank Software to learn why the NXP I.MX RT1170 crossover MCU is the right embedded hardware to create and can help lower development risks and how developing engaging user experiences can easily become part of your development workflow. During this session, you’ll learn: About optimizing power and performance with i.MX RT [1170] Crossover MCUs Just how embedded GUI development can be a collaborative experience between development and design How Storyboard’s Rapid Design and Iteration technology embraces UI design changes during development What integrated capabilities can help leverage the hardware’s full potential How easy it is to develop GUI apps via a live demo of a Storyboard  
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RT600 MCUXpresso JLINK debug QSPI flash 1 Introduction     MIMXRT600-EVK is the NXP official board, which onboard flash is the external octal flash, the octal flash is connected to the RT685 flexSPI portB. In practical usage, the customer board may use other flash types, eg QSPI flash, and connect to the FlexSPI A port. Recently, nxp published one RT600 customer flash application note: https://www.nxp.com/docs/en/application-note/AN13386.pdf This document mainly gives the CMSIS DAP related flash algorithm usage, which modifies the option data to generate the new flash algo for the different flash types. Some customer’s own board may use the RT600 QSPI flash+MCUXPresso+JLINK to debug the application code. Recently, one of the customers find on his own customer board, when they use debugger JLINK associated with the MCUXPresso download code to the RT600 QSPI flash, they meet download issues, but when using the CMSIS DAP as a debugger and the related QSPI cfx file, they can download OK. So this document mainly gives the experience of how to use the RT600, MCUXpresso IDE, and JLINK to download and debug the code which is located in the external QSPI flash. 2 JLINK driver prepare and test   MCUXpresso IDE use the JLINK download, it will call the JLINK driver related script and the flash algorithm, but to RT600, the JLINK driver will use the RT600 EVK flexSPI port B octal flash in default, so, if the customer board changes to other flexSPI port and to QSPI flash, they need to provide the related QSPI flash algorithm and script file, otherwise, even they can find the ARM CM33 core, the download will be still failed. If customers want to use the MCUXpresso IDE and the JLINK, they need to make sure the JLINK driver attached tool can do the external flash operation, eg, erase, read, write successfully at first. Now, give the JLINK driver related tool how to add the RT600 QSPI flash driver and script file. 2.1 JLINK driver install   Download the Segger JLINK driver from the following link: https://www.segger.com/downloads/jlink/JLink_Windows_V754b_x86_64.exe This document will use the jlink v7.54b to test, other version is similar. Install the driver, the default driver install path is: C:\Program Files\SEGGER 2.2 Universal flashloader RT-UFL    RT-UFL v1.0 is a universal flashloader, which uses one .FLM file for all i.MXRT chips, and the different external flash, it is mainly used for the Segger JLINK debugger. RT-UFL v1.0 downoad link: https://github.com/JayHeng/RT-UFL/archive/refs/tags/v1.0.zip    Now, to the RT600 QSPI, give the related flash algo file patch.    Copy the following path file: \RT-UFL-1.0\algo\SEGGER\JLink_Vxxx To the JLINK install path: \SEGGER\JLink Then copy the content in file: RT-UFL-master\test\SEGGER\JLink_Vxxx\Devices\NXP\iMXRT6xx\archive2\evkmimxrt685.JLinkScript To replace the content in: C:\Program Files\SEGGER\JLink\Devices\NXP\iMXRT_UFL\iMXRT6xx_CortexM33.JLinkScript Otherwise, the MCUXpresso IDE debug reset button function will not work. So, need to add the JLINKScript code for ResetTarget, which will reset the external flash. pic1 The RT-UFL provide 3 types download flash algo: MIMXRT600_UFL_L0, MIMXRT600_UFL_L1, MIMXRT600_UFL_L2. Pic 2 _L0 used for the QSPI Flash and Octal Flash(page size 256 Bytes, sector size 4KB), _L1/2 used for the hyper flash(Page size 512 Bytes,Sector size 4KB/64KB). The JLINKDevices.xml content also can get the detail information. Different name will call different .FLM, the .FLM is the flash algorithm file, the source code can be found in RT-UFL v1.0, it will use different option0 option1 to configure the different external memory when the memory chip can support SFDP. <Device> <ChipInfo Vendor="NXP" Name="MIMXRT600_UFL_L0" WorkRAMAddr="0x00000000" WorkRAMSize="0x00480000" Core="JLINK_CORE_CORTEX_M33" JLinkScriptFile="Devices/NXP/iMXRT_UFL/iMXRT6xx_CortexM33.JLinkScript" Aliases="MIMXRT633S; MIMXRT685S_M33"/> <FlashBankInfo Name="Octal Flash" BaseAddr="0x08000000" MaxSize="0x08000000" Loader="Devices/NXP/iMXRT_UFL/MIMXRT_FLEXSPI_UFL_256B_4KB.FLM" LoaderType="FLASH_ALGO_TYPE_OPEN" /> </Device> <!------------------------> <Device> <ChipInfo Vendor="NXP" Name="MIMXRT600_UFL_L1" WorkRAMAddr="0x00000000" WorkRAMSize="0x00480000" Core="JLINK_CORE_CORTEX_M33" JLinkScriptFile="Devices/NXP/iMXRT_UFL/iMXRT6xx_CortexM33.JLinkScript" Aliases="MIMXRT633S; MIMXRT685S_M33"/> <FlashBankInfo Name="Octal Flash" BaseAddr="0x08000000" MaxSize="0x08000000" Loader="Devices/NXP/iMXRT_UFL/MIMXRT_FLEXSPI_UFL_512B_4KB.FLM" LoaderType="FLASH_ALGO_TYPE_OPEN" /> </Device> <!------------------------> <Device> <ChipInfo Vendor="NXP" Name="MIMXRT600_UFL_L2" WorkRAMAddr="0x00000000" WorkRAMSize="0x00480000" Core="JLINK_CORE_CORTEX_M33" JLinkScriptFile="Devices/NXP/iMXRT_UFL/iMXRT6xx_CortexM33.JLinkScript" Aliases="MIMXRT633S; MIMXRT685S_M33"/> <FlashBankInfo Name="Octal Flash" BaseAddr="0x08000000" MaxSize="0x08000000" Loader="Devices/NXP/iMXRT_UFL/MIMXRT_FLEXSPI_UFL_512B_64KB.FLM" LoaderType="FLASH_ALGO_TYPE_OPEN" /> </Device> 2.3 JLINK commander test Please note, the device need to select as MIMXRT600_UFL_L0 when using the QSPI flash. Pic 3                                         pic 4 Pic 5 We can find, the JLINK command can realize the external QSPI flash read, erase function. 2.4 Jflash Test Operation steps: Target->connect->production programming Pic 6 We can find, the Jflash also can realize the RT600 external QSPI flash erase and program. Please note, not all the JLINK can support JFLASH, this document is using Segger JLINK plus. 3 MCUXpresso configuration and test MCUXpresso: v11.4.0 SDK_2_10_0_EVK-MIMXRT685 MCUXPresso IDE import the SDK project, eg. Helloworld or led_output. 3.1 QSPI FCB configuration    FCB is located from the flash offset address 0X08000400, which is used for the FlexSPI Nor boot configuration, the detailed content of the FCB can be found from the RT600 user manual Table 997. FlexSPI flash configuration block. Different external Flash, the configuration is different, if need to use the QSPI flash, the FCB should use the QSPI related configuration and its own LUT table.    Modify SDK project flash_config folder flash_config.c and flash_config.h, LUT contains fast read, status read, write enable, sector erase, block erase, page program, erase the whole chip. If the external QSPI flash command is different, the LUT command should be modified by following the flash datasheet mentioned related command. const flexspi_nor_config_t flexspi_config = { .memConfig = { .tag = FLASH_CONFIG_BLOCK_TAG, .version = FLASH_CONFIG_BLOCK_VERSION, .readSampleClksrc=kFlexSPIReadSampleClk_LoopbackInternally, .csHoldTime = 3, .csSetupTime = 3, .columnAddressWidth = 0, .deviceModeCfgEnable = 0, .deviceModeType = 0, .waitTimeCfgCommands = 0, .deviceModeSeq = {.seqNum = 0, .seqId = 0,}, .deviceModeArg = 0, .configCmdEnable = 0, .configModeType = {0}, .configCmdSeqs = {0}, .configCmdArgs = {0}, .controllerMiscOption = (0), .deviceType = 1, .sflashPadType = kSerialFlash_4Pads, .serialClkFreq = kFlexSpiSerialClk_133MHz, .lutCustomSeqEnable = 0, .sflashA1Size = BOARD_FLASH_SIZE, .sflashA2Size = 0, .sflashB1Size = 0, .sflashB2Size = 0, .csPadSettingOverride = 0, .sclkPadSettingOverride = 0, .dataPadSettingOverride = 0, .dqsPadSettingOverride = 0, .timeoutInMs = 0, .commandInterval = 0, .busyOffset = 0, .busyBitPolarity = 0, .lookupTable = { #if 0 [0] = 0x08180403, [1] = 0x00002404, [4] = 0x24040405, [12] = 0x00000604, [20] = 0x081804D8, [36] = 0x08180402, [37] = 0x00002080, [44] = 0x00000460, #endif // Fast Read [4*0+0] = FLEXSPI_LUT_SEQ(CMD_SDR , FLEXSPI_1PAD, 0xEB, RADDR_SDR, FLEXSPI_4PAD, 0x18), [4*0+1] = FLEXSPI_LUT_SEQ(MODE4_SDR, FLEXSPI_4PAD, 0x00, DUMMY_SDR , FLEXSPI_4PAD, 0x09), [4*0+2] = FLEXSPI_LUT_SEQ(READ_SDR , FLEXSPI_4PAD, 0x04, STOP_EXE , FLEXSPI_1PAD, 0x00), //read status [4*1+0] = FLEXSPI_LUT_SEQ(CMD_SDR , FLEXSPI_1PAD, 0x05, READ_SDR, FLEXSPI_1PAD, 0x04), //write Enable [4*3+0] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0x06, STOP_EXE, FLEXSPI_1PAD, 0), // Sector Erase byte LUTs [4*5+0] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0x20, RADDR_SDR, FLEXSPI_1PAD, 0x18), // Block Erase 64Kbyte LUTs [4*8+0] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0xD8, RADDR_SDR, FLEXSPI_1PAD, 0x18), //Page Program - single mode [4*9+0] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0x02, RADDR_SDR, FLEXSPI_1PAD, 0x18), [4*9+1] = FLEXSPI_LUT_SEQ(WRITE_SDR, FLEXSPI_1PAD, 0x04, STOP_EXE, FLEXSPI_1PAD, 0x0), //Erase whole chip [4*11+0]= FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0x60, STOP_EXE, FLEXSPI_1PAD, 0), }, }, .pageSize = 0x100, .sectorSize = 0x1000, .ipcmdSerialClkFreq = 1, .isUniformBlockSize = 0, .blockSize = 0x10000, }; This code has been tested on the RT685+ QSPI flash MT25QL128ABA1ESE, the code boot is working. 3.2 Debug configuration Configure the JLINK options in the MCUXpresso IDE as the JLINK driver: JLinkGDBServerCL.exe Windows->preferences Pic 7 Press debug, generate .launch file. Pic 8 Run->Debug configurations           Pic 9 Choose the device as MIMXRT600_UFL_L0, if the SWD wire is long and not stable, also can define the speed as the fixed low frequency. 3.3 Download and debug test Before download, need to check the RT685 ISP mode configuration, as this document is using the 4 wire QSPI and connect to the FlexSPI A port, so the ISP boot mode should be FlexSPI boot from Port A: ISP2 PIO1_17 low, ISP1 PIO1_16 high, ISP0 PIO1_15 high Click debug button, we can see the code enter the debug mode, and enter the main function, the code address is located in the flexSPI remap address. Pic 10 Click run, we can find the RT685 pin P0_26 is toggling, and the UART interface also can printf information. The application code is working. 4 External SPI flash operation checking To the customer designed board, normally we will use the JLINK command to check whether it can find the ARM core or not at first, make sure the RT chip can work, then will check the external flash operation or not. 4.1 SDK IAP flash code test We can use the SDK related code to test the external flash operation or not at first, the SDK code path is: SDK_2_10_0_EVK-MIMXRT685\boards\evkmimxrt685\driver_examples\iap\iap_flash Then, check the external flash, and modify the code’s related option0, option1 to match the external flash. About the option 0 and option1 definition, we can find it from the RT600 user manual Table 1004.Option0 definition and Table 1005.Option1 definition Pic 11 Pic 12 To the external QSPI flash which is connected to the FLexSPI portA, we can modify the option to the following code:     option.option0.U = 0xC0000001;//EXAMPLE_NOR_FLASH;     option.option1.U = 0x00000000;//EXAMPLE_NOR_FLASH_OPTION1; Then burn the IAP_flash project to the RT685 internal RAM, debug to run it. Pic 13 We can find, the external QSPI flash initialization, erase, read and write all works, and the memory also can find the correct data. 4.2 MCUBootUtility test   Chip enter the ISP mode, then use the MCUBootUtility tool to connect the RT685 and QSPI flash, to do the application code program and read test. ISP mode:ISP2:high, ISP1: high ISP0 low Configure FlexSPI NOR Device Configuration as QSPI, we can use the template: ISSI_IS25LPxxxA_IS25WPxxxA. Pic 14 Click connect to ROM button, check whether it can recognize the external flash: Pic 15 After connection, we can use the tool attached RT685 image to download: NXP-MCUBootUtility-3.3.1\apps\NXP_MIMXRT685-EVK_Rev.E\led_blinky_0x08001000_fdcb.srec Pic 16 We can find, the connection, erase, program and read are all work, it also indicates the RT685+external QSPI flash is working. Then can go to debug it with IDE and debugger.    
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Introduction NXP i.MXRT106x has two USB2.0 OTG instance. And the RT1060 EVK has both of the USB interface on the board. But the RT1060 SDK only has single USB host example. Although RT1060’s USB host stack support multiple devices, but we still need a USB HUB when user want to connect two device. This article will show you how to make both USB instance as host. RT1060 SDK has single host examples which support multiple devices, like host_hid_mouse_keyboard_bm. But this application don’t use these examples. Instead, MCUXpresso Config Tools is used to build the demo from beginning. The config tool is a very powerful tool which can configure clock, pin and peripherals, especially the USB. In this application demo, it can save 95% coding work. Hardware and software tools RT1060 EVK MCUXpresso 11.4.0 MIMXRT1060 SDK 2.9.1 Step 1 This project will support USB HID mouse and USB CDC. First, create an empty project named MIMXRT1062_usb_host_dual_port. When select SDK components, select “USB host CDC” and “”USB host HID” in Middleware label. IDE will select other necessary component automatically.     After creating the empty project, clock should be configured first. Both of the USB PHY need 480M clock.   Step 2 Next step is to configure USB host in peripheral config tool. Due to the limitation of config tool, only one host instance of the USB component is allowed. In this project, CDC VCOM is added first.   Step 3 After these settings, click “Update Code” in control bar. This will turn all the configurations into code and merge into project. Then click the “copy to clipboard” button. This will copy the host task call function. Paste it in the forever while loop in the project’s main(). Besides that, it also need to add BOARD_InitBootPeripherals() function call in main(). At this point, USB VCOM is ready. The tool will not only copy the file and configure USB, but also create basic implementation framework. If compile and download the project to RT1060 EVK, it can enumerate a USB CDC VCOM device on USB1. If characters are send from CDC device, the project can send it out to DAPLink UART port so that you can see the character on a terminal interface in computer. Step 4 To get USB HID mouse code, it need to create another USB HID project. The workflow is similar to the first project. Here is the screenshot of the USB HID configuration.   Click “Update code”, the HID mouse code will be generated. The config tool generate two files, usb_host_interface_0_hid_mouse.c and usb_host_interface_0_hid_mouse. Copy them to the “source” folder in dual host project.     Step 5 Next step is to modify some USB macro definitions. <usb_host_config.h> #define USB_HOST_CONFIG_EHCI 2 /*means there are two host instance*/ #define USB_HOST_CONFIG_MAX_HOST 2 /*The USB driver can support two ehci*/ #define USB_HOST_CONFIG_HID (1U) /*for mouse*/ Next step is merge usb_host_app.c. The project initialize USB hardware and software in USB_HostApplicationInit(). usb_status_t USB_HostApplicationInit(void) { usb_status_t status; USB_HostClockInit(kUSB_ControllerEhci0); USB_HostClockInit(kUSB_ControllerEhci1); #if ((defined FSL_FEATURE_SOC_SYSMPU_COUNT) && (FSL_FEATURE_SOC_SYSMPU_COUNT)) SYSMPU_Enable(SYSMPU, 0); #endif /* FSL_FEATURE_SOC_SYSMPU_COUNT */ status = USB_HostInit(kUSB_ControllerEhci0, &g_HostHandle[0], USB_HostEvent); status = USB_HostInit(kUSB_ControllerEhci1, &g_HostHandle[1], USB_HostEvent); /*each usb instance have a g_HostHandle*/ if (status != kStatus_USB_Success) { return status; } else { USB_HostInterface0CicVcomInit(); USB_HostInterface0HidMouseInit(); } USB_HostIsrEnable(); return status; } In USB_HostIsrEnable(), add code to enable USB2 interrupt.    irqNumber = usbHOSTEhciIrq[1]; NVIC_SetPriority((IRQn_Type)irqNumber, USB_HOST_INTERRUPT_PRIORITY); EnableIRQ((IRQn_Type)irqNumber); Then add and modify USB interrupt handler. void USB_OTG1_IRQHandler(void) { USB_HostEhciIsrFunction(g_HostHandle[0]); } void USB_OTG2_IRQHandler(void) { USB_HostEhciIsrFunction(g_HostHandle[1]); } Since both USB instance share the USB stack, When USB event come, all the event will call USB_HostEvent() in usb_host_app.c. HID code should also be merged into this function. static usb_status_t USB_HostEvent(usb_device_handle deviceHandle, usb_host_configuration_handle configurationHandle, uint32_t eventCode) { usb_status_t status1; usb_status_t status2; usb_status_t status = kStatus_USB_Success; /* Used to prevent from multiple processing of one interface; * e.g. when class/subclass/protocol is the same then one interface on a device is processed only by one interface on host */ uint8_t processedInterfaces[USB_HOST_CONFIG_CONFIGURATION_MAX_INTERFACE] = {0}; switch (eventCode & 0x0000FFFFU) { case kUSB_HostEventAttach: status1 = USB_HostInterface0CicVcomEvent(deviceHandle, configurationHandle, eventCode, processedInterfaces); status2 = USB_HostInterface0HidMouseEvent(deviceHandle, configurationHandle, eventCode, processedInterfaces); if ((status1 == kStatus_USB_NotSupported) && (status2 == kStatus_USB_NotSupported)) { status = kStatus_USB_NotSupported; } break; case kUSB_HostEventNotSupported: usb_echo("Device not supported.\r\n"); break; case kUSB_HostEventEnumerationDone: status1 = USB_HostInterface0CicVcomEvent(deviceHandle, configurationHandle, eventCode, processedInterfaces); status2 = USB_HostInterface0HidMouseEvent(deviceHandle, configurationHandle, eventCode, processedInterfaces); if ((status1 != kStatus_USB_Success) && (status2 != kStatus_USB_Success)) { status = kStatus_USB_Error; } break; case kUSB_HostEventDetach: status1 = USB_HostInterface0CicVcomEvent(deviceHandle, configurationHandle, eventCode, processedInterfaces); status2 = USB_HostInterface0HidMouseEvent(deviceHandle, configurationHandle, eventCode, processedInterfaces); if ((status1 != kStatus_USB_Success) && (status2 != kStatus_USB_Success)) { status = kStatus_USB_Error; } break; case kUSB_HostEventEnumerationFail: usb_echo("Enumeration failed\r\n"); break; default: break; } return status; } USB_HostTasks() is used to deal with all the USB messages in the main loop. At last, HID work should also be added in this function. void USB_HostTasks(void) { USB_HostTaskFn(g_HostHandle[0]); USB_HostTaskFn(g_HostHandle[1]); USB_HostInterface0CicVcomTask(); USB_HostInterface0HidMouseTask(); }   After all these steps, the dual USB function is ready. User can insert USB mouse and USB CDC device into any of the two USB port simultaneously. Conclusion All the RT/LPC/Kinetis devices with two OTG or HOST can support dual USB host. With the help of MCUXpresso Config Tool, it is easy to implement this function.
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Obtaining the footprint for Kinetis/LPC/i.MXRT part numbers is very straightforward using the Microcontroller Symbols, Footprints and Models Library homepage, on the following link: https://www.nxp.com/design/software/models/microcontroller-symbols-footprints-and-models:MCUCAD?tid=vanMCUCAD What some users may not be aware of is that the BXL file available for NXP Kinetis/LPC/i.MXRT part numbers also contain the 3D model of the package, which is often needed when working on the industrial design of your application. You may follow the steps below to export the 3D model of the package in STEP (Standard for the Exchange of Product Data) format using the Ultra Librarian software, which can be downloaded from the link on the models library homepage. A STEP (.step,stp) file stores the model in ASCII format. This format can be imported into many CAD suites that allow to work with 3D solids. First, obtain the BXL file for the part number you are interested in. In this example the MIMXRT1052CVL5B.blx.   Then, open the Ultra Librarian project and load this file using the “Load Data” button, and select the “3D Step Model” checkbox from the Select Tools options. Finally, select the Export to Select Tools option. Once the exporting process is finished, the step file will be available on the path UltraLibrarian/Library/Exported.  The STEP (.stp) file can be opened in CAD suites that support solid 3D objects, like FreeCAD which is open source.
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1 Introduction RT1060 MCUXpresso SDK provide the ota_bootloader project, download link: https://mcuxpresso.nxp.com/en/welcome ota_bootloader path: SDK_2_10_0_EVK-MIMXRT1060\boards\evkmimxrt1060\bootloader_examples\ota_bootloader  this ota_bootloader can let the customer realize the on board app update, the RT1060 OTA bootloader mainly have the two functions: ISP method update APP Provide the API to the customer, can realize the different APP swap and rollback function ISP method is from the flashloader, the flashloader put the code in the internal RAM, when use it, normally RT chip need to enter the serial download mode, and use the sdphost download the flashloader to the internal RAM, then run it to realize the ISP function. But OTA_bootloader will put the code in the flash directly, RT chip can run it in the internal boot mode directly, each time after chip reset, the code will run the ota_bootloader at first, this time, customer can use the blhost to communicate the RT chip with UART/USB HID directly to download the APP code. So, to the ISP function in the OTA_bootloader, customer also can use it as the ISP secondary bootloader to update the APP directly. Then reset after the 5 seconds timeout, if the APP area is valid, code will jump to the APP and run APP. To the ota_bootloader swap and rollback function, customer can use the provided API in the APP directly to realize the APP update, run the different APP, swap and rollback to the old APP.    This document will give the details about how to use the ota_bootloader ISP function to update the APP, how to modify the customer application to match the ota_bootloader, how to resolve the customer APP issues which need to use the SDRAM with the ota_bootloader, how to use the ota_bootloader API to realize the swap and rollback function, and the related APP prepare. 2 OTA bootloader ISP usage Some customers need the ISP secondary bootloader function, as the flashloader need to put in the internal RAM, so customer can use the ota_bootloader ISP function realize the secondary bootloader requirement, to this method, customer mainly need to note two points: 1) APP need to add the ota_header to meet the ota_bootloader demand. 2) APP use the SDRAM, ota_bootloader need to add DCD memory  2.1 application modification OTA_bootloader located in the flash from 0x60000000, APP locate from 0x60040000. We can find this from the ota_bootloader bootloader_config.h file: #define BL_APP_VECTOR_TABLE_ADDRESS (0x60040000u) From 0x60040000, the first 0X400 should put the ota_header, then the real APP code is put from 0x6004400. Now, take the SDK evkmimxrt1060_iled_blinky project as an example, to modify it to match the ota_bootloader. Application code need to add these files: ota_bootloader_hdr.c, ota_bootloader_board.h, ota_bootloader_supp.c, ota_bootloader_supp.h These files can be found from the evkmimxrt1060_lwip_httpssrv_ota project, put the above files in the led_blinky source folder. 2.1.1 memory modification    APP memory start address modify from 0x60000000 to 0x60040000, which is the ota_bootloader defined address。 Fig 1 2.1.2 ota_hdr related files add   In the led_blinky project source folder, add the mentioned ota_bootloader related files. Fig 2 2.1.3 linker file modification In the evkmimxrt1060_iled_blinky_debug.ld, add boot_hdr, length is 0X400. We can use the MCUXpresso IDE linkscripts folder, add the .ldt files to modify the linker file. Here, in the project, add one linkscripts folder, add the boot_hdr_MIMXRT1060.ldt file, build . Fig 3 After the build, we can find the ld file already add the ota_header in the first 0x400 range. Fig 4 The above is the generated evkmimxrt1060_iled_blinky_ota_0x60040000.bin file, we can find already contains the boot_hdr. From offset 0x400, will put the real APP code. 2.2 ISP test related command Test board is MIMXRT1060-EVK, download the evkmimxrt1060_ota_bootloader project at first, can use the mcuxpresso IDE download it directly, then press the reset button, put the blhost and evkmimxrt1060_iled_blinky_ota_0x60040000.bin in the same folder, use the following command:   blhost.exe -t 50000 -u 0x15a2,0x0073 -j -- get-property 1 0 blhost.exe -t 2048000 -u 0x15a2,0x0073 -j -- flash-erase-region 0x60040000 0x6000 9 blhost.exe -t 5242000 -u 0x15a2,0x0073 -j -- write-memory 0x60040000 evkmimxrt1060_iled_blinky_ota_0x60040000.bin blhost.exe -t 5242000 -u 0x15a2,0x0073 -j -- read-memory 0x60040000 0x6000 flexspiNorCfg.dat 9 Fig 5 After the download is finished, press the reset, wait 5 seconds, it will jump to the app, we can find the MIMXRT1060-EVK on board led is blinking. This method realize the flash ISP bootloader downloading and the app working. The above command is using the USB HID to download, if need to use the UART, also can use command like this: blhost.exe -t 50000 -p COM45,19200 -j -- get-property 1 0 blhost.exe -t 50000 -p COM45,19200 -j -- flash-erase-region 0x60040000 0x6000 9 blhost.exe -t 50000 -p COM45,19200 -j -- write-memory 0x60040000 evkmimxrt1060_iled_blinky_ota_0x60040000.bin blhost.exe -t 50000 -p COM45,19200 -j -- read-memory 0x60040000 0x6000 flexspiNorCfg.dat 9 To the UART communication, as the ota_bootloader auto baud detect issues, it’s better to use the baudrate not larger than 19200bps, or in the ota_bootloader code, define the fixed baudrate, eg, 115200. 2.3 Bootloader DCD consideration Some customer use the ota_bootloader to associate with their own application, which is used the external SDRAM, and find although the downloading works, but after boot, the app didn’t run successfully. In the APP code, it add the DCD configuration, but as the ota_bootloader already put in the front of the QSPI, app will use the ota_hdr, which will delete the dcd part, so, to this situation, customer can add the dcd in the ota_bootloader. The SDK ota_bootloader didn’t add the dcd part in default. Now, modify the ota_bootloader at first, then prepare the sdram app and test it. 2.3.1 Ota_bootloader add dcd 2.3.1.1 add dcd files   ota_bootloader add dcd.c dcd.h, these two files can be found from the SDK hello_world project. Copy these two files to the ota_bootloader board folder. From the dcd.c code, we can see, dcd_data[] array is put in the “.boot_hdr.dcd_data” area, and it need to define the preprocessor: XIP_BOOT_HEADER_DCD_ENABLE=1 2.3.1.2 add dcd linker code   Modify the mcuxpresso IDE ld files, and add the dcd range.    .ivt : AT(ivt_begin) { . = 0x0000 ; KEEP(* (.boot_hdr.ivt)) /* ivt section */ . = 0x0020 ; KEEP(* (.boot_hdr.boot_data)) /* boot section */ . = 0x0030 ; KEEP(*(.boot_hdr.dcd_data)) __boot_hdr_end__ = ABSOLUTE(.) ; . = 0x1000 ; } > m_ivt Fig 6 0x60001000 : IVT 0x6000100c : DCD entry point 0x60001020 : boot data 0x60001030 : DCD detail data 2.3.1.3 add IVT dcd entry point   ota_bootloader->MIMXRT1062 folder->hardware_init_MIMXRT1062.c,modify the image_vector_table, fill the DCD address to the dcdc_data array address as the dcd entry point. Fig 7 Until now, we finish the ota_bootloader dcd add, build the project, generate the image, we can find, DCD already be added to the ota_bootloader image. Fig 8 DCD entry point in the IVT and the DCD data is correct, we can burn this modified ota_bootloader to the MIMXRT1060-EVK board. 2.3.2 SDRAM app prepare Still based on the evkmimxrt1060_iled_blinky project, just put some function in the SDRAM. From memory, we can find, the SRAM is in the RAM4: Fig 9 In the led_blinky.c, add this header: #include <cr_section_macros.h> Then, put the systick delay code to the RAM4 which is the SDRAM area. __RAMFUNC(RAM4) void SysTick_DelayTicks(uint32_t n) { g_systickCounter = n; while (g_systickCounter != 0U) { } } Now, we already finish the simple SDRAM app, we also can test it, and put the breakpoint in the SysTick_DelayTicks, we can find the address is also the SDRAM related address, generate the evkmimxrt1060_iled_blinky1_SDRAM_0x60040000.bin. If use the old ota_bootloader to download this .bin, we can find the led is not blinking. 2.3.3 Test result Command refer to chapter 2.2 ISP test related command, download the evkmimxrt1060_iled_blinky1_SDRAM_0x60040000.bin with the new modified ota_bootloader project, we can find, after reset, the led will blink. So the SDRAM app works with the modified ota_bootloader. 3 OTA bootloader swap and rollback OTA bootloader can realize the swap and rollback function, this part will test the ota_bootloader swap and rollback, prepare two apps and download to the different partition area, then use the UART input char to select the swap or rollback function, to check the which app is running. 3.1  memory map ota bootloader memory information. Fig 10 The above map is based on the external 8Mbyte QSPI flash. OTA bootloader: RT SDK ota bootloader code Boot meta 0: contains 3 partition start address, size etc. information, ISP peripheral information. Boot meta 1: contains 3 partition start address, size etc. information, ISP peripheral information. Swap meta 0: bootloader will use meta data to do the swap operation Swap meta 1: bootloader will use meta data to do the swap operation Partition 1: APP1 location Partition 2: APP2 location Scratch part: APP1 backup location, start point is before 0x60441000, which is enough to put APP1 and multiple sector size, eg, APP1 is 0X5410, sector size is 0x1000, APP1 need 6 sectors, so the scratch start address is 0x60441000-0x6000=0x43b000. User data: user used data area 3.2 swap and rollback basic Fig11  The APP1 and APP2 put in the partition1 and partition2 need to contains the ota_header which meet the bootloader demand, bootloader will check the APP CRC, if it passed, then will boot the app, otherwise, it will enter the ISP mode. Partition2 image need to has the valid header, otherwise, swap will be failed.   Swap function will erase partition2 scratch area, then put the partition1 code to the scratch, erase the partition 1 position, and write the partition 2 image to the partition1 position.   Rollback function will run the previous APP1, erase the partition 2 position, copy the parititon 1 image back to the partition 2, erase partition 1 position, copy partition 2 scratch image back to partition 1. 3.2.1 boot meta boot_meta 0: 0x0x6003c000 size: 0x20c boot_meta 1: 0x0x6003d000 size: 0x20c   OTA bootloader can read boot meta from the two different address, when the two address meta are valid(tag is 'B', 'L', 'M', 'T'), bootloader will choose the bigger version meta. If both meta is not valid, bootloader will copy default boot meta data to the boot meta 0 address.   Boot meta contains 3 partition start address, size information. SDK demo can call bootloader API to find the partition information, then do the image program.   Boot meta also contains the ISP peripheral information, the timeout(5s) information, the structure is: //!@brief Partition information table definitions typedef struct { uint32_t start; //!< Start address of the partition uint32_t size; //!< Size of the partition uint32_t image_state; //!< Active/ReadyForTest/UnderTest uint32_t attribute; //!< Partition Attribute - Defined for futher use uint32_t reserved[12]; //!< Reserved for future use } partition_t; //!@brief Bootloader meta data structure typedef struct { struct { uint32_t wdTimeout; uint32_t periphDetectTimeout; uint32_t enabledPeripherals; uint32_t reserved[12]; } features; partition_t partition[kPartition_Max];//16*4*7 bytes uint32_t meta_version; uint32_t patition_entries; uint32_t reserved0; uint32_t tag; } bootloader_meta_t;   3.2.2 swap meta Swap meta 0 : 0x6003e000, size 0x50 Swap meta 1 : 0x6003f000, size 0x50    OTA bootloader will read the swap meta from 2 different place, if it is not valid, bootloader will set the default data to swap meta 0(0x6003e000). If both image are valid, bootloader will choose the bigger version meta.    Bootloader will refer to the meta data to do the swap operation, sometimes, after reset, meta data will be modified automatically. It mainly relay on the swap_type: kSwapType_ReadyForTest :After reset, do swap operation. Modify meta swap_type to kSwapType_Test. Reset, as the meta data is kSwapType_Test, bootloader can do the rollback. kSwapType_Test : After reset, do rollback after operation, swap_type change to kSwapType_None.  kSwapType_Rollback bootloader will write kSwapType_Test to the meta, after reset, bootloader will refer to kSwapType_Test to do the operation.  kSwapType_Permanent After reset, modify meta data to kSwapType_Permanent, then the APP will boot with partition 1. Swap structure: //!@brief Swap progress definitions typedef struct { uint32_t swap_offset; //!< Current swap offset uint32_t scratch_size; //!< The scratch area size during current swapping uint32_t swap_status; // 1 : A -> B scratch, 2 : B -> A uint32_t remaining_size; //!< Remaining size to be swapped } swap_progress_t; typedef struct { uint32_t size; uint32_t active_flag; } image_info_t; //!@brief Swap meta information, used for the swapping operation typedef struct { image_info_t image_info[2]; //!< Image info table #if !defined(BL_FEATURE_HARDWARE_SWAP_SUPPORTED) || (BL_FEATURE_HARDWARE_SWAP_SUPPORTED == 0) swap_progress_t swap_progress; //!< Swap progress #endif uint32_t swap_type; //!< Swap type uint32_t copy_status; //!< Copy status uint32_t confirm_info; //!< Confirm Information uint32_t meta_version; //!< Meta version uint32_t reserved[7]; //!< Reserved for future use uint32_t tag; } swap_meta_t; 3.3 Common used API Bootloader provide the API for the customer to use it, the common used API are: 3.3.1 update_image_state   update swap meta data, before update, it will check the partition1 image valid or not, if image is not valid, swap meta data will not be updated, and return failure. 3.3.2 get_update_partition_info   get partition information, then define the image program address. 3.3.3 get_image_state   get the current boot image status. None/permanent/UnderTest 3.4  Swap rollback APP prepare Prepare two APPs: APP1 and APP2 bin file, and use the USB HID download to the partition1 and paritition 2. After reset, run APP1 in default, then use the COM input to select the swap and rollback function. Code is: int main(void) { char ch; status_t status; /* Board pin init */ BOARD_InitPins(); BOARD_InitBootClocks(); /* Update the core clock */ SystemCoreClockUpdate(); BOARD_InitDebugConsole(); PRINTF("\r\n------------------hello world + led blinky demo 2.------------------\r\n"); PRINTF("\r\nOTA bootloader test...\r\n" "1 - ReadyForTest\r\n" "3 - kSwapType_Permanent\r\n" "4 - kSwapType_Rollback\r\n" "5 - show image state\r\n" "6 - led blinking for 5times\r\n" "r - NVIC reset\r\n"); // show swap state in swap meta get_image_swap_state(); /* Set systick reload value to generate 1ms interrupt */ if (SysTick_Config(SystemCoreClock / 1000U)) { while (1) { } } while(1) { ch = GETCHAR(); switch(ch) { case '1': status = bl_update_image_state(kSwapType_ReadyForTest); PRINTF("update_image_state to kSwapType_ReadyForTest status: %i\n", status); if (status != 0) PRINTF("update_image_state(kSwapType_ReadyForTest): failed\n"); else NVIC_SystemReset(); break; case '3': status = bl_update_image_state(kSwapType_Permanent); PRINTF("update_image_state to kSwapType_Permanent status: %i\n", status); if (status != 0) PRINTF("update_image_state(kSwapType_Permanent): failed\n"); else NVIC_SystemReset(); break; case '4': status = bl_update_image_state(4); // PRINTF("update_image_state to kSwapType_Rollback status: %i\n", status); if (status != 0) PRINTF("update_image_state(kSwapType_Rollback): failed\n"); else NVIC_SystemReset(); break; case '5': // show swap state in swap meta get_image_swap_state(); break; case '6': Led_blink10times(); break; case 'r': NVIC_SystemReset(); break; } } } When download the APP, need to use the correct ota_header in the first 0x400 area, otherwise, swap will failed. const boot_image_header_t ota_header = { .tag = IMG_HDR_TAG, .load_addr = ((uint32_t)&ota_header) + BL_IMG_HEADER_SIZE, .image_type = IMG_TYPE_XIP, .image_size = 0, .algorithm = IMG_CHK_ALG_CRC32, .header_size = BL_IMG_HEADER_SIZE, .image_version = 0, .checksum = {0xFFFFFFFF}, }; This is a correct sample: Fig 12 Image size and checksum need to use the real APP image information, in the attached file, provide one image_header_padding.exe, it can input the none ota header image, then it will output the whole image which add the ota_header contains the image size and the image crc data in the first 0x400 range. 3.5 Test steps and result Prepare the none header APP1 evkmimxrt1060_APP1_0X60040400.bin, APP2 image evkmimxrt1060_APP2_0X60240400.bin, and put blhost.exe, image_header_padding.exe in the same folder. APP1 and APP2 just the printf version is different, one is version1, another is version2. Printf result: hello world + led blinky demo 1 hello world + led blinky demo 2 Attached OTAtest folder is used for test, but need to download the blhost.exe from the below link, and copy the blhost.exe to the OTAtest folder. https://www.nxp.com/webapp/sps/download/license.jsp?colCode=blhost_2.6.6&appType=file1&DOWNLOAD_ID=null Then run the following bat command: image_header_padding.exe evkmimxrt1060_APP1_0X60040400.bin 0x60040400 sleep 20 blhost.exe -t 50000 -u 0x15a2,0x0073 -j -- get-property 1 0 sleep 20 blhost.exe -u -t 1000000 -- flash-erase-region 0x6003c000 0x4000 sleep 50 blhost -u -t 5000 -- flash-erase-region 0x60040000 0x10000 sleep 50 blhost -u -t 5000 -- write-memory 0x60040000 boot_img_crc32.bin sleep 100 image_header_padding.exe evkmimxrt1060_APP2_0X60240400.bin 0x60040400 sleep 20 blhost -u -t 5000 -- flash-erase-region 0x60240000 0x10000 sleep 50 blhost -u -t 5000 -- flash-erase-region 0x6043b000 0x10000 sleep 50 blhost -u -t 5000 -- write-memory 0x60240000 boot_img_crc32.bin sleep 100 pause The function is to generate the APP1 with the correct ota_header, erase parititon 1,program APP1 to partition 1, generate the APP2 with the correct ota_header, erase partition 2 and scratch area, program APP2 to partition 2, Run the .bat file should in 5 seconds after reset, then use the ISP to connect it: blhost.exe -t 50000 -u 0x15a2,0x0073 -j -- get-property 1 0 ota_bootloader can use the ota_bootloader project download directly to the 0X60000000 area. After downloading, reset the chip, and wait for 5 seconds, the APP will run. This is the test result: Fig 13 From the test result, we can find, in the first time boot, APP1 running, image state: none Input 1, do the swap, will find the APP2 running, image state: undertest Input 3, select permanent, reset will find, still APP2 running, image state: permanent Input 4, choose rollback, reset will find APP1 running, image states: none Until now, finish the swap and rollback function. Input 6, will find the APP contains the SDRAM led blinky is working.          
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The i.MXRT1060 provides tightly coupled GPIOs to be accessed with high frequency. RT1060 provides two sets of GPIOs registers to control pad output. GPIO1 to GPIO3 are general GPIOs, and GPIO6 to GPIO8 are tightly GPIOs, but they share the same pad, which means the gpio pin can select from GPIO1/2/3 or GPIO6/7/8. The registers IOMUXC_GPR_GPR26, IOMUXC_GPR_GPR27, and IOMUXC_GPR_GPR28 are for GPIO selection. To select the gpio pin between GPIO1/2/3 or GPIO6/7/8 you can use MCUXpresso Config Tools. For example, if you select pin G10 you can select either GPIOI_IO11 for normal GPIO or GPIO6_IO11 for fast GPIO.  I made an example based on the SDK v2.7.0 to compare the speed of Normal GPIO and Fast GPIO. For this, I used pin G10 (GPIOI_IO11 and GPIO6_IO11). Firstly, I used the normal GPIO pin (GPIOI_IO11). I will toggle the pin by writing directly to the GPIO_DR register. Notice that you can access this pin through J22 pin 3 in the evaluation board, so you can measure the performance of the pin. Here are the results: With the normal GPIO pin, we reach a period of 160ns when writing directly to the GPIO_DR register. Now, if we change to the fast GPIO and use the same instructions we have the following results. As you can see when using the fast GPIO pin, the period of the signal it's almost one-third of the period when using a normal GPIO. Now, The A1 silicon of the RT1060 has a new GPIO toggle feature. If we toggle the pin with the new register DR_TOGGLE instead of the GPIO_DR we will get better performance with both pins, normal GPIO and fast. Here are the results of the normal GPIO with the DR_TOGGLE register. As you can see when using the register DR_TOGGLE along with the normal GPIO pin we get a period of around 53 ns while when writing to the GPIO_DR register we got 160 ns. When using the register DR_TOGGLE and the fast GPIO we will get the best performance of the pin. Results are shown below. Many thanks to @jorge_a_vazquez for his valuable help with this document. Hope this helps! Best regards, Victor.
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As we know, the RT series MCUs support the XIP (Execute in place) mode and benefit from saving the number of pins, serial NOR Flash is most commonly used, as the FlexSPI module can high efficient fetch the code and data from the Serial NOR flash for Cortex-M7 to execute. The fetch way is implementing via utilizing the Quad IO Fast Read command, meanwhile, the serail NOR flash works in the SDR (Single Data transfer Rate) mode, it receives data on SCLK rise edge and transmits data on SCLK fall edge. Comparing to the SDR mode, the DDR (Dual Data transfer Rate) mode has a higher throughput capacity, whether it can provide better performance of XIP mode, and how to do that if we want the Serial NOR Flash to work in DDR (Dual Data transfer Rate) mode? SDR & DDR mode SDR mode: In   SDR (Single Data transfer Rate) mode, data is only clocked on one edge of the clock (either the rising or falling edge). This means that for SDR to have data being transmitted at X Mbps, the clock bit rate needs to be 2X Mbps. DDR mode: For   DDR (Dual Data transfer Rate) mode, also known as DTR (Dual Transfer Rate) mode, data is transferred on both the rising and falling edge of the clock. This means data is transmitted at X Mbps only requires the clock bit rate to be X Mbps, hence doubling the bandwidth (as Fig 1 shows).   Fig 1 Enable DDR mode The below steps illustrate how to make the i.MX RT1060 boot from the QSPI with working in DDR mode. Note:   The board is   MIMXRT1060, IDE is   MCUXpresso IDE Open a hello_world as the template Modify the FDCB(Flash Device Configuration Block) a)Set the controllerMiscOption parameter to supports DDR read command. b) Set Serial Flash frequency to 60 MHz. c)Parase the DDR read command into command sequence. The following table shows a template command sequence of DDR Quad IO FAST READ instruction and it's almost matching with the FRQDTR (Fast Read Quad IO DTR) Sequence of IS25WP064 (as Fig 2 shows).   Fig2 FRQDTR Sequence d)Adjust the dummy cycles. The dummy cycles should match with the specific serial clock frequency and the default dummy cycles of the FRQDTR sequence command is 6 (as the below table shows).   However, when the serial clock frequency is 60MHz, the dummy cycle should change to 4 (as the below table shows).   So it needs to configure [P6:P3] bits of the Read Register (as the below table shows) via adding the SET READ PARAMETERS command sequence(as Fig 3 shows) in FDCB manually. Fig 3 SET READ PARAMETERS command sequence In further, in DDR mode, the SCLK cycle is double the serial root clock cycle. The operand value should be set as   2N, 2N-1 or 2*N+1   depending on how the dummy cycles defined in the device datasheet. In the end, we can get an adjusted FCDB like below. // Set Dummy Cycles #define FLASH_DUMMY_CYCLES 8 // Set Read register command sequence's Index in LUT table #define CMD_LUT_SEQ_IDX_SET_READ_PARAM 7 // Read,Read Status,Write Enable command sequences' Index in LUT table #define CMD_LUT_SEQ_IDX_READ 0 #define CMD_LUT_SEQ_IDX_READSTATUS 1 #define CMD_LUT_SEQ_IDX_WRITEENABLE 3 const flexspi_nor_config_t qspiflash_config = { .memConfig = { .tag = FLEXSPI_CFG_BLK_TAG, .version = FLEXSPI_CFG_BLK_VERSION, .readSampleClksrc=kFlexSPIReadSampleClk_LoopbackFromDqsPad, .csHoldTime = 3u, .csSetupTime = 3u, // Enable DDR mode .controllerMiscOption = kFlexSpiMiscOffset_DdrModeEnable | kFlexSpiMiscOffset_SafeConfigFreqEnable, .sflashPadType = kSerialFlash_4Pads, //.serialClkFreq = kFlexSpiSerialClk_100MHz, .serialClkFreq = kFlexSpiSerialClk_60MHz, .sflashA1Size = 8u * 1024u * 1024u, // Enable Flash register configuration .configCmdEnable = 1u, .configModeType[0] = kDeviceConfigCmdType_Generic, .configCmdSeqs[0] = { .seqNum = 1, .seqId = CMD_LUT_SEQ_IDX_SET_READ_PARAM, .reserved = 0, }, .lookupTable = { // Read LUTs [4*CMD_LUT_SEQ_IDX_READ] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0xED, RADDR_DDR, FLEXSPI_4PAD, 0x18), // The MODE8_DDR subsequence costs 2 cycles that is part of the whole dummy cycles [4*CMD_LUT_SEQ_IDX_READ + 1] = FLEXSPI_LUT_SEQ(MODE8_DDR, FLEXSPI_4PAD, 0x00, DUMMY_DDR, FLEXSPI_4PAD, FLASH_DUMMY_CYCLES-2), [4*CMD_LUT_SEQ_IDX_READ + 2] = FLEXSPI_LUT_SEQ(READ_DDR, FLEXSPI_4PAD, 0x04, STOP, FLEXSPI_1PAD, 0x00), // READ STATUS REGISTER [4*CMD_LUT_SEQ_IDX_READSTATUS] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0x05, READ_SDR, FLEXSPI_1PAD, 0x01), [4*CMD_LUT_SEQ_IDX_READSTATUS + 1] = FLEXSPI_LUT_SEQ(STOP, FLEXSPI_1PAD, 0x00, 0, 0, 0), // WRTIE ENABLE [4*CMD_LUT_SEQ_IDX_WRITEENABLE] = FLEXSPI_LUT_SEQ(CMD_SDR,FLEXSPI_1PAD, 0x06, STOP, FLEXSPI_1PAD, 0x00), // Set Read register [4*CMD_LUT_SEQ_IDX_SET_READ_PARAM] = FLEXSPI_LUT_SEQ(CMD_SDR,FLEXSPI_1PAD, 0x63, WRITE_SDR, FLEXSPI_1PAD, 0x01), [4*CMD_LUT_SEQ_IDX_SET_READ_PARAM + 1] = FLEXSPI_LUT_SEQ(STOP,FLEXSPI_1PAD, 0x00, 0, 0, 0), }, }, .pageSize = 256u, .sectorSize = 4u * 1024u, .blockSize = 64u * 1024u, .isUniformBlockSize = false, }; Is DDR mode real better? According to the RT1060's datasheet, the below table illustrates the maximum frequency of FlexSPI operation, as the MIMXRT1060's onboard QSPI flash is IS25WP064AJBLE, it doesn't contain the MQS pin, it means set MCR0.RXCLKsrc=1 (Internal dummy read strobe and loopbacked from DQS) is the most optimized option. operation mode RXCLKsrc=0 RXCLKsrc=1 RXCLKsrc=3 SDR 60 MHz 133 MHz 166 MHz DDR 30 MHz 66 MHz 166 MHz In another word, QSPI can run up to 133 MHz in SDR mode versus 66 MHz in DDR mode. From the perspective of throughput capacity, they're almost the same. It seems like DDR mode is not a better option for IS25WP064AJBLE and the following experiment will validate the assumption. Experiment mbedtls_benchmark I use the mbedtls_benchmark as the first testing demo and I run the demo under the below conditions: 100MH, SDR mode; 133MHz, SDR mode; 66MHz, DDR mode; According to the corresponding printout information (as below shows), I make a table for comparison and I mark the worst performance of implementation items among the above three conditions, just as Fig 4 shows. SDR Mode run at 100 MHz. FlexSPI clock source is 3, FlexSPI Div is 6, PllPfd2Clk is 720000000 mbedTLS version 2.16.6 fsys=600000000 Using following implementations: SHA: DCP HW accelerated AES: DCP HW accelerated AES GCM: Software implementation DES: Software implementation Asymmetric cryptography: Software implementation MD5 : 18139.63 KB/s, 27.10 cycles/byte SHA-1 : 44495.64 KB/s, 12.52 cycles/byte SHA-256 : 47766.54 KB/s, 11.61 cycles/byte SHA-512 : 2190.11 KB/s, 267.88 cycles/byte 3DES : 1263.01 KB/s, 462.49 cycles/byte DES : 2962.18 KB/s, 196.33 cycles/byte AES-CBC-128 : 52883.94 KB/s, 10.45 cycles/byte AES-GCM-128 : 1755.38 KB/s, 329.33 cycles/byte AES-CCM-128 : 2081.99 KB/s, 279.72 cycles/byte CTR_DRBG (NOPR) : 5897.16 KB/s, 98.15 cycles/byte CTR_DRBG (PR) : 4489.58 KB/s, 129.72 cycles/byte HMAC_DRBG SHA-1 (NOPR) : 1297.53 KB/s, 448.03 cycles/byte HMAC_DRBG SHA-1 (PR) : 1205.51 KB/s, 486.04 cycles/byte HMAC_DRBG SHA-256 (NOPR) : 1786.18 KB/s, 327.70 cycles/byte HMAC_DRBG SHA-256 (PR) : 1779.52 KB/s, 328.93 cycles/byte RSA-1024 : 202.33 public/s RSA-1024 : 7.00 private/s DHE-2048 : 0.40 handshake/s DH-2048 : 0.40 handshake/s ECDSA-secp256r1 : 9.00 sign/s ECDSA-secp256r1 : 4.67 verify/s ECDHE-secp256r1 : 5.00 handshake/s ECDH-secp256r1 : 9.33 handshake/s   DDR Mode run at 66 MHz. FlexSPI clock source is 2, FlexSPI Div is 5, PllPfd2Clk is 396000000 mbedTLS version 2.16.6 fsys=600000000 Using following implementations: SHA: DCP HW accelerated AES: DCP HW accelerated AES GCM: Software implementation DES: Software implementation Asymmetric cryptography: Software implementation MD5 : 16047.13 KB/s, 27.12 cycles/byte SHA-1 : 44504.08 KB/s, 12.54 cycles/byte SHA-256 : 47742.88 KB/s, 11.62 cycles/byte SHA-512 : 2187.57 KB/s, 267.18 cycles/byte 3DES : 1262.66 KB/s, 462.59 cycles/byte DES : 2786.81 KB/s, 196.44 cycles/byte AES-CBC-128 : 52807.92 KB/s, 10.47 cycles/byte AES-GCM-128 : 1311.15 KB/s, 446.53 cycles/byte AES-CCM-128 : 2088.84 KB/s, 281.08 cycles/byte CTR_DRBG (NOPR) : 5966.92 KB/s, 97.55 cycles/byte CTR_DRBG (PR) : 4413.15 KB/s, 130.42 cycles/byte HMAC_DRBG SHA-1 (NOPR) : 1291.64 KB/s, 449.47 cycles/byte HMAC_DRBG SHA-1 (PR) : 1202.41 KB/s, 487.05 cycles/byte HMAC_DRBG SHA-256 (NOPR) : 1748.38 KB/s, 328.16 cycles/byte HMAC_DRBG SHA-256 (PR) : 1691.74 KB/s, 329.78 cycles/byte RSA-1024 : 201.67 public/s RSA-1024 : 7.00 private/s DHE-2048 : 0.40 handshake/s DH-2048 : 0.40 handshake/s ECDSA-secp256r1 : 8.67 sign/s ECDSA-secp256r1 : 4.67 verify/s ECDHE-secp256r1 : 4.67 handshake/s ECDH-secp256r1 : 9.00 handshake/s   Fig 4 Performance comparison We can find that most of the implementation items are achieve the worst performance when QSPI works in DDR mode with 66 MHz. Coremark demo The second demo is running the Coremark demo under the above three conditions and the result is illustrated below. SDR Mode run at 100 MHz. FlexSPI clock source is 3, FlexSPI Div is 6, PLL3 PFD0 is 720000000 2K performance run parameters for coremark. CoreMark Size : 666 Total ticks : 391889200 Total time (secs): 16.328717 Iterations/Sec : 2449.671999 Iterations : 40000 Compiler version : MCUXpresso IDE v11.3.1 Compiler flags : Optimization most (-O3) Memory location : STACK seedcrc : 0xe9f5 [0]crclist : 0xe714 [0]crcmatrix : 0x1fd7 [0]crcstate : 0x8e3a [0]crcfinal : 0x25b5 Correct operation validated. See readme.txt for run and reporting rules. CoreMark 1.0 : 2449.671999 / MCUXpresso IDE v11.3.1 Optimization most (-O3) / STACK   SDR Mode run at 133 MHz. FlexSPI clock source is 3, FlexSPI Div is 4, PLL3 PFD0 is 664615368 2K performance run parameters for coremark. CoreMark Size : 666 Total ticks : 391888682 Total time (secs): 16.328695 Iterations/Sec : 2449.675237 Iterations : 40000 Compiler version : MCUXpresso IDE v11.3.1 Compiler flags : Optimization most (-O3) Memory location : STACK seedcrc : 0xe9f5 [0]crclist : 0xe714 [0]crcmatrix : 0x1fd7 [0]crcstate : 0x8e3a [0]crcfinal : 0x25b5 Correct operation validated. See readme.txt for run and reporting rules. CoreMark 1.0 : 2449.675237 / MCUXpresso IDE v11.3.1 Optimization most (-O3) / STACK   DDR Mode run at 66 MHz. FlexSPI clock source is 2, FlexSPI Div is 5, PLL3 PFD0 is 396000000 2K performance run parameters for coremark. CoreMark Size : 666 Total ticks : 391890772 Total time (secs): 16.328782 Iterations/Sec : 2449.662173 Iterations : 40000 Compiler version : MCUXpresso IDE v11.3.1 Compiler flags : Optimization most (-O3) Memory location : STACK seedcrc : 0xe9f5 [0]crclist : 0xe714 [0]crcmatrix : 0x1fd7 [0]crcstate : 0x8e3a [0]crcfinal : 0x25b5 Correct operation validated. See readme.txt for run and reporting rules. CoreMark 1.0 : 2449.662173 / MCUXpresso IDE v11.3.1 Optimization most (-O3) / STACK   After comparing the CoreMark scores, it gets the lowest CoreMark score when QSPI works in DDR mode with 66 MHz. However, they're actually pretty close. Through the above two testings, we can get the DDR mode maybe not a better option, at least for the i.MX RT10xx series MCU.
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Introduction Normal Cortex-M core-based MCUs generally have built-in parallel NOR Flash. The parallel NOR Flash is directly hung on the Cortex-M core high-performance AHB bus. If a well-known IDE supports the MCU, it should integrate the corresponding Flash driver algorithm which enables the developer to program and debug the MCU in the IDE. However, the i.MX RT series MCU doesn't contain the internal flash, how do developers debug these MCUs with online XIP (eXecute-In-Place)? Take easy, i.MXRT can support external parallel NOR and serial NOR to run the XIP, benefit from saving the number of pins, serial NOR Flash is most commonly used and FlexSPI supports XIP feature which makes online debug available. The article introduces the mechanism of debugging the external serial NOR flash with the RT MCU and illustrates the steps of modifying the flash driver algorithm of MCUXpresso. CoreSight Technical The i.MX RT series MCU is based on the Cortex-M core and the   CoreSight Technical   is a new debugging architecture launched by ARM in 2004 and is also a part of the core authorization, supports the debug and trace feature for Cortex-M core-based MCU. CoreSight is very powerful. It contains many debugging components (ie various protocols). The following figure is from the   CoreSight Technical Introduction Manual, which shows the connections between various debugging components under the CoreSight architecture. Fig 1 CoreSight Technical This article does not mainly aim to introduce CoreSight technical. Therefore, for CoreSight, we only need to know that it in charge of the main debugging work and the CoreSight can access the system memory and peripheral register from the AMBA bus through the DAP component in real-time, definitely, it includes the code in the external serial Flash. FlexSPI module To implement debugging in serial Flash, the code must be XIP in serial Flash, that is, the CPU must be able to fetch instructions and data from any address in serial Flash in real-time. The serial Flash mentioned in this article generally refers to the 4-wire SPI Interface NOR Flash and the SPI mode can be Single/Dual/Quad/Octal. No matter which SPI mode is, the Flash is essentially serial Flash, and the address lines and data lines are not only shared but also serial. According to conventional knowledge, to implement the XIP, Flash should be a parallel bus interface and hung on AMBA, further, this parallel bus should have independent address lines and data lines, and the width of the address lines correspond to the size of Flash. So why can run XIP in serial Flash with i.MXRT? The answer is the FlexSPI peripheral. Figure 2 is the FlexSPI module block diagram. On the right side of the block diagram is the signal connection between FlexSPI and external serial Flash. The left side is the connection between FlexSPI and the internal bus of the i.MXRT system. There are two types of bus interface: 32bit IPS BUS (manual manipulate the FlexSPI register sends Flash reading and writing commands) and 64bit AHB BUS (FlexSPI translates the AHB access address and automatically sends the corresponding Flash reading and writing commands) which is the key feature enables the XIP available. Fig 2 FlexSPI module In the Reference manual, it lists detailed information about the AHB bus: - AHB RX Buffer implemented to reduce read latency. Total AHB RX Buffer size: 128 * 64 Bits - 16 AHB masters supported with priority for reading access - 4 flexible and configurable buffers in AHB RX Buffer - AHB TX Buffer implemented to buffer all write data from one AHB burst. AHB TX Buffer size: 8 * 64 Bits - All AHB masters share this AHB TX Buffer. No AHB master number limitation for Write Access. In addition, the AHB bus includes the below-enhanced features to optimize the reading of Serial Flash memory. - Cachable and Non-Cachable access - Prefetch Enable/Disable - Burst size: 8/16/32/64 bits - All burst type: SINGLE/INCR/WRAP4/INCR4/WRAP8/INCR8/WRAP16/INCR16 Debugging process of serial Flash Fig 3 illustrates the debugging process of serial Flash with the RT series MCU and in basic, the overview of the debugging process is not complicated. When you click IDE debugging icon, the Flash driver algorithm (executable file) pre-installed in the IDE will be downloaded to the internal FlexRAM of i.MXRT via the debugger firstly. The Flash driver algorithm provides FlexSPI initialization, erase and programming APIs, etc. Next, the debugger caches the application code (binary machine code) in FlexRAM in segments prior to calling the Flash programming API to implement the program work. After completing programming application code (from FlexRAM to Flash), CoreSight will take over the debugging work. At this time, the CPU can access the serial Flash that connects the FlexSPI module through the AHB bus, in another word, CoreSight can control and track code in real-time, and single-step debugging is available too in the IDE. Fig 3 Flash Driver of MCUXpresso IDE The latest version (11.3.1) of MCUXpresso IDE supports all RT series MCU (as the following figure shows), the developer should select a suitable flash driver file to apply to his board (Fig 5). Fig 4 MCUXpresso IDE Fig 5 Flash driver files As mentioned above, the RT series MCUs don't have an internal flash, so they must use an either external parallel or serial NOR. For IDE providers, it's too hard to provide enough flash drivers to fit all external NOR flashes, the workload is huge, so IDEs general provide the flash driver files for mainstream Serial NOR, especially, 4-wire SPI Interface NOR Flash, it means we need to modify or tune the flash driver to fit our specific application. Add new flash driver of MCUXpresso IDE Before start, we should realize that MCUXpresso IDE is different from MDK/IAR. The flash driver algorithms of MDK and IAR are independent of the specific debug tools and they are able to use with all supported debug tools (JLink/DAPLink, etc). For MCUXpresso IDE, the flash driver algorithms are only able to use with the CMSIS-DAP type debug tool. For instance, when you use JLink with MCUXPresso IDE, it will use the flash driver algorithm of Jlink instead of its own. There's a real case from a customer: He currently designs his new card reader module based on RT1024 and he plans to make a board without external RAM and Flash. In other words, he only utilizes the internal 4MB flash and 256KB FlexRAM which consist of SRAM_DTC(64KB), SRAM_ITC(64KB), SRAM_OC(128KB). So he wants to configure the 256KB RAM area as normal 256KB RAM without being allocated to ITCM and DTCM. He follows the   thread   to reconfigure the FlexRAM, but he still encounters the below problem (as Fig 6 shows ) when entering debug mode. Fig 6 According to the debug failure log, we can come to a conclusion that the flash drive file: MIMXRT1020.cfx needs to be updated, and the following steps illustrate how to do it. a) Select a source project There are some flash driver projects in the Examples/Flashdrivers/NXP subdirectory within the MCUXpresso IDE installation directory (as Fig 7 shows) and iMXRT folder contains some flash driver projects for external flash parts that work with the RT series MCU (as Fig 8 shows). Fig 7 Fig 8 Select the flash driver project which is the closest to the target as a prototype, in this case, we select the iMXRT1020_QSPI project, extract the project file and import them in the MCUXpresso IDE (as Fig 9). Fig 9 b) Modify pin assignment The RT1024 integrates a 4 MB QSPI flash as an "internal flash", it is connected to different FlexSPI pins versus to the default pins of the iMXRT1020_QSPI project just as the below table shows. FlexSPI pin RT1020 RT1024 FLEXSPI_A_DQS GPIO_SD_B1_05 GPIO_SD_B1_05 FLEXSPI_A_SS0_B GPIO_SD_B1_11 GPIO_AD_B1_05 FLEXSPI_A_SCLK GPIO_SD_B1_07 GPIO_AD_B1_01 FLEXSPI_A_DATA0 GPIO_SD_B1_08 GPIO_AD_B1_02 FLEXSPI_A_DATA1 GPIO_SD_B1_10 GPIO_AD_B1_04 FLEXSPI_A_DATA2 GPIO_SD_B1_09 GPIO_AD_B1_03 FLEXSPI_A_DATA3 GPIO_SD_B1_06 GPIO_AD_B1_00 So it needs to adjust the pin initialization in the BOARD_InitPins() function in pin_mux.c. /* FUNCTION ************************************************************************************************************ * * Function Name : BOARD_InitPins * Description : Configures pin routing and optionally pin electrical features. * * END ****************************************************************************************************************/ void BOARD_InitPins ( void ) { CLOCK_EnableClock(kCLOCK_Iomuxc); /* iomuxc clock (iomuxc_clk_enable): 0x03u */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B0_06_LPUART1_TX, /* GPIO_AD_B0_06 is configured as LPUART1_TX */ 0U ); /* Software Input On Field: Input Path is determined by functionality */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B0_07_LPUART1_RX, /* GPIO_AD_B0_07 is configured as LPUART1_RX */ 0U ); /* Software Input On Field: Input Path is determined by functionality */ IOMUXC_SetPinMux( IOMUXC_GPIO_SD_B1_05_FLEXSPI_A_DQS, /* GPIO_SD_B1_05 is configured as FLEXSPI_A_DQS */ 1U ); /* Software Input On Field: Force input path of pad GPIO_SD_B1_05 */ // IOMUXC_SetPinMux( // IOMUXC_GPIO_SD_B1_06_FLEXSPI_A_DATA03, /* GPIO_SD_B1_06 is configured as FLEXSPI_A_DATA03 */ // 1U); /* Software Input On Field: Force input path of pad GPIO_SD_B1_06 */ // IOMUXC_SetPinMux( // IOMUXC_GPIO_SD_B1_07_FLEXSPI_A_SCLK, /* GPIO_SD_B1_07 is configured as FLEXSPI_A_SCLK */ // 1U); /* Software Input On Field: Force input path of pad GPIO_SD_B1_07 */ // IOMUXC_SetPinMux( // IOMUXC_GPIO_SD_B1_08_FLEXSPI_A_DATA00, /* GPIO_SD_B1_08 is configured as FLEXSPI_A_DATA00 */ // 1U); /* Software Input On Field: Force input path of pad GPIO_SD_B1_08 */ // IOMUXC_SetPinMux( // IOMUXC_GPIO_SD_B1_09_FLEXSPI_A_DATA02, /* GPIO_SD_B1_09 is configured as FLEXSPI_A_DATA02 */ // 1U); /* Software Input On Field: Force input path of pad GPIO_SD_B1_09 */ // IOMUXC_SetPinMux( // IOMUXC_GPIO_SD_B1_10_FLEXSPI_A_DATA01, /* GPIO_SD_B1_10 is configured as FLEXSPI_A_DATA01 */ // 1U); /* Software Input On Field: Force input path of pad GPIO_SD_B1_10 */ // IOMUXC_SetPinMux( // IOMUXC_GPIO_SD_B1_11_FLEXSPI_A_SS0_B, /* GPIO_SD_B1_11 is configured as FLEXSPI_A_SS0_B */ // 1U); /* Software Input On Field: Force input path of pad GPIO_SD_B1_11 */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B1_00_FLEXSPI_A_DATA03, /* GPIO_AD_B1_00 is configured as FLEXSPI_A_DATA03 */ 1U ); /* Software Input On Field: Force input path of pad GPIO_AD_B1_00 */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B1_01_FLEXSPI_A_SCLK, /* GPIO_AD_B1_01 is configured as FLEXSPI_A_SCLK */ 1U ); /* Software Input On Field: Force input path of pad GPIO_AD_B1_01 */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B1_02_FLEXSPI_A_DATA00, /* GPIO_AD_B1_02 is configured as FLEXSPI_A_DATA00 */ 1U ); /* Software Input On Field: Force input path of pad GPIO_AD_B1_02 */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B1_03_FLEXSPI_A_DATA02, /* GPIO_AD_B1_03 is configured as FLEXSPI_A_DATA02 */ 1U ); /* Software Input On Field: Force input path of pad GPIO_AD_B1_03 */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B1_04_FLEXSPI_A_DATA01, /* GPIO_AD_B1_04 is configured as FLEXSPI_A_DATA01 */ 1U ); /* Software Input On Field: Force input path of pad GPIO_AD_B1_04 */ IOMUXC_SetPinMux( IOMUXC_GPIO_AD_B1_05_FLEXSPI_A_SS0_B, /* GPIO_AD_B1_05 is configured as FLEXSPI_A_SS0_B */ 1U ); /* Software Input On Field: Force input path of pad GPIO_AD_B1_05 */ IOMUXC_SetPinConfig( IOMUXC_GPIO_AD_B0_06_LPUART1_TX, /* GPIO_AD_B0_06 PAD functional properties : */ 0x10B0 u); /* Slew Rate Field: Slow Slew Rate Drive Strength Field: R0/6 Speed Field: medium(100MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_AD_B0_07_LPUART1_RX, /* GPIO_AD_B0_07 PAD functional properties : */ 0x10B0 u); /* Slew Rate Field: Slow Slew Rate Drive Strength Field: R0/6 Speed Field: medium(100MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_SD_B1_05_FLEXSPI_A_DQS, /* GPIO_SD_B1_05 PAD functional properties : */ 0x10F1 u); /* Slew Rate Field: Fast Slew Rate Drive Strength Field: R0/6 Speed Field: max(200MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_SD_B1_06_FLEXSPI_A_DATA03, /* GPIO_SD_B1_06 PAD functional properties : */ 0x10F1 u); /* Slew Rate Field: Fast Slew Rate Drive Strength Field: R0/6 Speed Field: max(200MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_SD_B1_07_FLEXSPI_A_SCLK, /* GPIO_SD_B1_07 PAD functional properties : */ 0x10F1 u); /* Slew Rate Field: Fast Slew Rate Drive Strength Field: R0/6 Speed Field: max(200MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_SD_B1_08_FLEXSPI_A_DATA00, /* GPIO_SD_B1_08 PAD functional properties : */ 0x10F1 u); /* Slew Rate Field: Fast Slew Rate Drive Strength Field: R0/6 Speed Field: max(200MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_SD_B1_09_FLEXSPI_A_DATA02, /* GPIO_SD_B1_09 PAD functional properties : */ 0x10F1 u); /* Slew Rate Field: Fast Slew Rate Drive Strength Field: R0/6 Speed Field: max(200MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_SD_B1_10_FLEXSPI_A_DATA01, /* GPIO_SD_B1_10 PAD functional properties : */ 0x10F1 u); /* Slew Rate Field: Fast Slew Rate Drive Strength Field: R0/6 Speed Field: max(200MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ IOMUXC_SetPinConfig( IOMUXC_GPIO_SD_B1_11_FLEXSPI_A_SS0_B, /* GPIO_SD_B1_11 PAD functional properties : */ 0x10F1 u); /* Slew Rate Field: Fast Slew Rate Drive Strength Field: R0/6 Speed Field: max(200MHz) Open Drain Enable Field: Open Drain Disabled Pull / Keep Enable Field: Pull/Keeper Enabled Pull / Keep Select Field: Keeper Pull Up / Down Config. Field: 100K Ohm Pull Down Hyst. Enable Field: Hysteresis Disabled */ } c) Modify linker file According to Fig 3, a flash driver should be downloaded into FlexRAM on the target MCU during the debuggingprocess, for the iMXRT1020_QSPI project, the flash driver needs to be downloaded to DTCM (0x2000_0000~0x2001_0000), however, to meet the customer's demand, the whole of FlexRAM is reconfigured to SRAM_OC in the ResetISR() function. In another word, there's no DTCM area to load the flash driver and it causes the above debug failure. So we need to use the SRAM_OC instead of DTCM to load the flash driver just like the below shows. In the FlashDriver_32Kbuffer.ld of iMXRT1020_QSPI project: /* * Linker script for NXP LPC546xx SPIFI Flash Driver (Messaged) */ MEMORY { /*SRAM (rwx) : ORIGIN = 0x20000000, LENGTH = (64 * 1024)*/ SRAM (rwx) : ORIGIN = 0x20200000 , LENGTH = ( 64 * 1024 ) } /* stack size : multiple of 8*/ __stack_size = ( 4 * 1024 ); /* flash image buffer size : multiple of page size*/ __cache_size = ( 32 * 1024 ); /* Supported operations bit map * 0x40 = New device info available after Init() call * This setting must match the actual target flash driver build! */ __opmap_val = 0x1000 ; /* Actual placement of flash driver code/data controlled via standard file */ INCLUDE "../../LPCXFlashDriverLib/linker/placement.ld" d) Recompile In the LPCXFlashDriverLib project, select the Release_SectorHashing option prior to clicking the Build icon to generate libLPCXFlashDriverLib.a file (as Fig 10 shows). Fig 10 Next, in the iMXRT1020_QSPI project, select the MIMXRT1020-EVK_IS25LP064 option (as Fig 11 shows), then click the Build icon to generate a new flash driver file that resides in ~\Examples\Flashdrivers\NXP\iMXRT\iMXRT1020_QSPI\iMXRT1020_QSPI\builds directory. Fig 11 Note:   I've attached a test project which is based on the hello_world demo that comes from the RT1024's SDK library, in addition, the attachment also contains the new flash driver and corresponding debug script files, so please give it a try.  
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