Sometime need standalone compile device tree. Only Linux headers and device tree directory are needed.         

In the IMX8MM SDK unfortunately we cannot find any example about of use a GPIO as an input with interrupt.  To use a GPIO as input with interrupt we need to keep in mind how the GPIO IRQs works in the ARM Cortex M4.   We can find in Table 7-2 (CM4 Interrupt Summary) of IMX8MMRM (IMX8MM Reference Manual) the GPIOs IRQs are divided by two parts:     Combined interrupt indication for GPIOn signal 0 throughout 15  Combined interrupt indication for GPIOn signal 16 throughout 31    This basically means, the pines of GPIOn from 0 to 15 are handled by Combined interrupt indication for GPIOn signal 0 throughout 15 and the pines from 16 to 31 are handled by Combined interrupt indication for GPIOn signal 16 throughout 31.    In SDK we can find these definitions in:  <SDK root>/devices/MIMX8MM6/MIMX8MM6_cm4.h (Remember this is for IM8MM SDK)    In this example I will use GPIO5_IO12 (ECSPI2_MISO) as Input with IRQ and GPIO5_IO11 (ECSPI_MOSI) as Output of IMX8MM-EVK. I will connect the Output to the Input and will see the behavior of the IRQ in Rising and Falling edge.    For this example I will connect ECSPI2_MOSI (GPIO5_IO11) to ECSPI_MISO (GPIO5_IO12):   See the below definitions:   #define IN_GPIO   GPIO5  This define the GPIO base of the IN pin  #define IN_GPIO_PIN  12u  This define the pin number (for in)  #define IN_IRQ  GPIO5_Combined_0_15_IRQn  This define the IRQ number (72 in this case)  #define GPIO_IRQ_HANDLER  GPIO5_Combined_0_15_IRQHandler  This is a "pointer" to function that will handle the interrupt  #define IN_NAME  "IN GPIO5_IO12"  This is only a name or description for the pin    See below definitions:    #define OUT_GPIO  GPIO5  This is the GPIO base of OUT pin  #define OUT_GPIO_PIN  11u  This define the pin number (for out)  #define OUT_NAME  "OUT GPIO5_IO11"  This is only a name or description for the pin      Now the below section is the IRQ handler (which was defined before)😞   The GPIO_ClearPinsInterruptFlags(IN_GPIO, 1u << IN_GPIO_PIN); refers to GPIOx_ISR register:      For this example, the IRQ Handler will print "IRQ detected ............" in each interrupt.    We will create two different GPIOs config, one for Output and other one for Input with IRQ Falling edge:    Then configure the GPIOs and IRQ:     EnableIRQ refers to enable the 72 IRQ.   GPIO_PortEnableInterrupts refers to GPIOx_IMR: Finally, the example put the out GPIO5_IO11 in High state and then in low state many. First the IRQ is configured as Falling edge, then as Rising edge.     I will attach the complete source file.    To compile it you can use ARMGCC toolchain directly, but I like to use VSCode with MCUXpresso integration.  Once, when you have your .bin file (in my case igpio_led_output.bin) you can load to board with UUU tool: In your Linux machine: sudo uuu -b fat_write igpio_led_output.bin mmc 2:1 gpio.bin In U-boot board: u-boot=> fastboot 0   Then, when the .bin file was loaded, you can load to the CORTEX M4 in U-boot whit: u-boot=> fatload mmc 2:1 ${loadaddr} gpio.bin 7076 bytes read in 14 ms (493.2 KiB/s) u-boot=> cp.b 0x80000000 0x7e0000 0x10000 u-boot=> bootaux 0x7e0000 ## No elf image ar address 0x007e0000 ## Starting auxiliary core stack = 0x20020000, pc = 0x1FFE02CD... u-boot=>   NOTE: You can load the binary to cortex m4 with Custom bootscripts for practicity.   Once the binary loaded in M4 core you should see in seria terminal this logs (Remember GPIO5_IO11 and GPIO5_IO12 must be connected to get the same logs):    And the logs when you disconnect the GPIO5_IO11 and GPIO5_IO12 in execution time:  🔴Disconnection (Red color) 🔵Reconnection (Blue color)   I hope this can helps.     Best regards!    Salas. 

This is a simple document for recording some known-how and tips for building up the Windows 10 IoT development environment for i.MX platform. It can only be used as a complement for official document in BSP package (Guide/Release Note/etc.). Applicable for: Windows 10 IoT, i.MX BSP v1.4.1 (date to Nov/2023) Please refer to the PDF attached.

Hello, here Jorge. On this post I will explain how to configure, record and play audio using an i.MX 8MIC-RPI-MX8 Board. Requirements: I.MX 8M Mini EVK Linux Binary Demo Files - i.MX 8MMini EVK (L5.15.52_2.1.0) i.MX 8MIC-RPI-MX8 Board Serial console emulator (Tera Term, Putty, etc.) Headphones/speakers The 8MIC-RPI-MX8 accessory board is designed for voice enabled application prototyping and development on the i.MX 8M family. The board plugs directly into the 40-pin expansion connector on the i.MX 8M Mini and Nano EVK’s. Some features about this board are: 8 PDM Microphones 8 monochrome LEDs 4 multi-color LEDs 2 status LEDs 4 pushbuttons Microphone Mute Switch Microphone geometry switch Connecting the i.MX 8MIC-RPI-MX8 Board. The i.MX 8MIC-RPI-MX8 Board has a 40-pin expansion connector that you can plug it directly to the EVK board. Ensure that pin 1 of the 8MIC-RPI-MX8 is aligned with pin 1 on the EVK J1001 as is showed on the next figure:  Selecting the device tree on the board. Once the pre-compiled image is flashed on the board (Flashing Linux BSP using UUU) and you connected the 8MIC-RPI-MX8 it is necessary to select the correct device tree to handle 8MIC board. On U-boot check the available .dtb files on the BSP using the next command: u-boot=> fatls mmc 2:1 And you will get the corresponding list of .dbt files:  On this case we are working with an I.MX 8M Mini EVK and the corresponding .dtb file is: imx8mm-evk-8mic-revE.dtb To select it you need to set the environment variable and save it with: u-boot=> setenv fdtfile imx8mm-evk-8mic-revE.dtb u-boot=> saveenv Doble check it using: u-boot=> printenv fdtfile   Now it is time to boot Linux using the next command: u-boot=> boot Recording audio with the i.MX 8MIC-RPI-MX8 Board. The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system. ALSA has the following significant features: Efficient support for all types of audio interfaces, from consumer sound cards to professional multichannel audio interfaces. Fully modularized sound drivers. SMP and thread-safe design. User space library (alsa-lib) to simplify application programming and provide higher level functionality. Support for the older Open Sound System (OSS) API, providing binary compatibility for most OSS programs. Once we are on Linux, we can check our audio codecs detected on the board using: arecord -l   Now, to record audio we need to use the ALSA arecord command to start recording with IMX8 boards, there are different options that you can check on the next link. On this case we are going to use the next: arecord -D hw:imxaudiomicfil -c8 -f s16_le -r48000 -d10 sample.wav -D: selects the device. -c: selects the number of channels on the recording. -f: selects the format. -r: selects the sample rate. -d: determinate the duration recording time in seconds. sample.wav: Is the name of the resulting audio file. Running the last command, we started to record audio. It is time to make some noise and record it!   Playing audio from IMX8 boards. Now it is time to connect our headphones or speakers to the jack.   Also, as on arecord command you can check the devices where you can play audio from the board using the next command: aplay -l And you will get all the codecs to play audio:   To play our recordings we need to use the ALSA aplay command, it is important to select the correct audio codec to hear the audio from the jack on the board: aplay -Dplughw:3,0 sample.wav -D: selects the device. sample.wav: Is the name of audio file to play   Hope this will helpful for people who wants to record audio using PDM microphones and playing audio from IMX8 boards. Best regards.

Hello everyone, In this document I'll explain on how to build the UUU (Universal Update Utility) using windows 10 PC. This may be useful in case of adding custom commands to run during the flash using built-in scripts, be it for debugging, fuse blowing, etc. First we need to download and install Visual Studio community, for this guide I'll use community 2019, version it is available here: https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=Community&rel=16 For workloads select Universal Windows Platform development.   When installing, make sure to select and install the Git for windows complement, at the top select Individual components, this will display a new list, scroll down to code tools and you will find Git for windows, check this box In case Visual Studio is already installed, you may open the installer again and chose modify, this will let you install the complement as well. After the installation is complete we may run the git commands on the power shell. Now open the windows power shell and type the following commands: git clone https://github.com/NXPmicro/mfgtools.git // clones the MFGTool (UUU) source code from the github cd mfgtools // enters the mfgtools folder we just cloned git submodule init // creates the local configuration file for the submodules git submodule update // set the submodules to the commit specified by the main repository. At this point we can edit the built in scripts to add our custom commands, for this guide I'll add the printenv uboot command at the end of the flashing process. For this I'll enter the folder mfgtools/uuu, and edit emmc_burn_all.lst with any text editor, i.e. Notepad ++, add the command FB: ucmd printenv.   Save and close the editor, it is possible to add most uboot commands like for example the fuse commands to burn eFuses. Then we can now build the tool, opening msvc/uuu-static-link.sln with Visual studio, select solution uuu-static-link.sln   And finally build the solution: The executable (uuu.exe) would be at the following path: mfgtools\msvc\x64\Debug   Finally we run the built in script we modified and check the results. Find attached both the powershell and uboot logs, I tested this using an i.MX8MN with L5.4.47_2.2.0, running the following command: ./uuu.exe -v -b emmc_all imx-boot-imx8mnevk-sd.bin-flash_evk imx-image-full-imx8mnevk.wic Hope this may found useful for anyone trying to achieve something similar.

Q: How to program i.MX6 eFUSE? A: what about using the mfg tool? In the end only the supplies, USB OTG and the boot mode pins need to be connected. The customers Idea was to have all devices (i.MX6 eFUSE, Flash, PFUZE, etc) pre- programmed before mounting on the board. I presented the flows we support (MFG Tool, Platform SDK) for eFUSE programming last Friday when I was at the customer. KITPF0100SKTEVBE Product Summary Page MfgTools is the most convenient way to burn eFuse. Or the customer can burn the fuse on their jig/socket board by the u-boot: How to Fuse in U-Boot U-Boot contains a tool, imxotp, which is used for fusing. U-Boot > imxotp imxotp - One-Time Programable sub-system Usage: imxotp imxotp read <index> - read fuse at 'index' imxotp blow [--force] <index> <value> - blow fuse at 'index' with hex value 'value' Tips: 'addr' to 'index': convert 'index' from 'address' index = (addr - otp_base) / 0x10 eg, addr is 0x021bc410, otp_base is 0x021bc400, the index = 1 '--force' must be present in order to blow the fuse. Command will abort if '--force' is missing. index = (addr - otp_base) / 0x10, where the addr is the address of the fuse you want to operate, the otp_base is the base address of the fuse block. 'value' should correspond to fuse settings according to the fuse map and desired fuse configuration. ---------------------------------- FIrst of all thanks for your reply. However both flow assumes the i.MX6 is already soldered on the board. Please note the specific request was if it is possible (and we can support a programming house) to pre program the efuses BEFORE they are soldered on the PCB thus on a standard programmer. Take an FLASH programmer as an example.

Hello everyone, this document will explain on how to use the UUU (Universal Update Utility) tool to flash Linux to an i.MX device (i.MX 8MM).   Requirements:   MX 8M Mini EVK UUU tool documentation, available here Linux Binary Demo Files - i.MX 8MMini EVK UUU 1.2.135 binary Serial console emulator (tera term or putty)   UUU auto script For this example is used the L4.14.98_2.0.0_ga demo image for the i.MX 8MM, inside the demo image we will find the auto script, which by default flash the eMMC of the board, the structure of the script is as following   /***********************************************************************************/ uuu_version 1.2.39   # This command will be run when i.MX6/7 i.MX8MM, i.MX8MQ SDP: boot -f imx-boot-imx8mmevk-sd.bin-flash_evk   # This command will be run when ROM support stream mode # i.MX8QXP, i.MX8QM SDPS: boot -f imx-boot-imx8mmevk-sd.bin-flash_evk   # These commands will be run when use SPL and will be skipped if no spl # SDPU will be deprecated. please use SDPV instead of SDPU # { SDPU: delay 1000 SDPU: write -f imx-boot-imx8mmevk-sd.bin-flash_evk -offset 0x57c00 SDPU: jump # }   # These commands will be run when use SPL and will be skipped if no spl # if (SPL support SDPV) # { SDPV: delay 1000 SDPV: write -f imx-boot-imx8mmevk-sd.bin-flash_evk -skipspl SDPV: jump # }   FB: ucmd setenv fastboot_dev mmc FB: ucmd setenv mmcdev ${emmc_dev} FB: ucmd mmc dev ${emmc_dev} FB: flash -raw2sparse all fsl-image-validation-imx-imx8mmevk.sdcard FB: flash bootloader imx-boot-imx8mmevk-sd.bin-flash_evk FB: ucmd if env exists emmc_ack; then ; else setenv emmc_ack 0; fi; FB: ucmd mmc partconf ${emmc_dev} ${emmc_ack} 1 0 FB: done /***********************************************************************************/    In short, when the board goes into serial downloader mode UUU downloads the bootloader to internal RAM, once done and uboot is running, through fastboot utility it will flash .sdcard file and uboot to the eMMC on the board.   More information about the protocol UUU use please refer to the UUU documentation (UUU.pdf) section 5 Supported protocol.   Running the tool In order to run the tool the binary of uuu needs to be downloaded, the binary files can be downloaded from the link above, uuu.exe is for Windows and uuu is for Linux. Once downloaded it can be placed inside the same file as the demo image, this so it is easy to run and cleaner on the shell commands.   Windows In windows OS the tool should be run using the Windows PowerShell in administrator mode, once open we will run the next commands: > .\uuu.exe uuu.auto   Linux >$ sudo ./uuu uuu.auto   The tool will start running and should be waiting for any i.MX device to be detected by host pc   Preparing the board For the board to be flashed it is needed to be in download mode, the switch configuration (i.MX 8MM EVK) is as following: SW1101  -  1010XXXXXX SW1102  -  XXXXXXXXX0   Connect a USB cable from the host pc which will run the tool to the USB OTG/TYPE C port, usually specified as download, on the board.   Connect a USB cable from the host to the OTG-to-UART for console output, usually specified as debug, on the board.   Open terminal emulator program with the following settings: Bits per second - 115200 Data bits - 8 Parity - None Stop bits - 1 Flow control - None   Power on the board, the download will start and the serial prompt will show the progress in uboot, wait until the tool show success.   Finally power off the board and change the switch configuration to boot from the eMMC, power on the board again and it should boot successfully!   Built in scripts One can use the built in scripts using the -b option to burn the bootloader  and the rootfs to the target flash, just type the command accordingly to the target flash device.    SD Write bootloader only: Windows: > .\uuu.exe -b sd <bootloader> Linux: $ sudo ./uuu -b sd <bootloader>   Replace <bootloader> for your .imx/.bin file, example using the i.MX 8MM for Windows and Linux respectively below. > .\uur.exe -b sd imx-boot-imx8mmevk-sd.bin-flash_evk $ sudo ./uuu -b sd imx-boot-imx8mmevk-sd.bin-flash_evk    Write whole Linux image Windows: > .\uuu.exe -b sd_all <bootloader> <rootfs>.sdcard Linux: $ sudo ./uuu -b sd_all <bootloader> <rootfs>.sdcard   Replace <bootloader> and <rootfs> for the name of your .imx/.bin and .sdcard files respectively, example using the i.MX 8MM below. > .\uuu.exe -b sd_all  imx-boot-imx8mmevk-sd.bin-flash_evk fsl-image-validation-imx-imx8mmevk.sdcard $ sudo ./uuu -b sd_all  imx-boot-imx8mmevk-sd.bin-flash_evk fsl-image-validation-imx-imx8mmevk.sdcard   eMMC Write bootloader only Windows: > .\uuu.exe -b emmc <bootloader> Linux: $ sudo ./uuu -b emmc <bootloader>   Example using i.MX 8MM > .\uuu.exe -b emmc imx-boot-imx8mmevk-sd.bin-flash_evk $ sudo ./uuu -b emmc imx-boot-imx8mmevk-sd.bin-flash_evk   Write whole Linux image Windows: > .\uuu.exe -b emmc_all <bootloader> <rootfs>.sdcard Linux: $ sudo ./uuu -b emmc_all <bootloader> <rootfs>.sdcard   Example using i.MX 8MM > .\uuu.exe -b emmc_all imx-boot-imx8mmevk-sd.bin-flash_evk fsl-image-validation-imx-imx8mmevk.sdcard $ sudo ./uuu -b emmc_all imx-boot-imx8mmevk-sd.bin-flash_evk fsl-image-validation-imx-imx8mmevk.sdcard   Hope this will helpful for everyone who is starting to use this flashing tool.

Attached patch enable dual display on i.MX51 wince6. It will set DI0 as main display.

In our default release , the eboot logo only can be show on WVGA panel. Attached patch file can let the eboot logo show both on DVI XGA and RGB WVGA panel.

In the default release the SSI1 doesn't suport double FIFO in audio driver. Attached was the code to support double FIFO with updated DMA script.

In i.MX51 platfrom the PMIC 13892 also has a internal RTC. We can use this RTC instead of the i.mx51 SRTC. Attached was the implementation of it.

Currently the default i.MX51 wince release doesn't support high capacity MMC card. Attached was the patch of how to enable high capacity MMC card in i.mx51. Original Attachment has been moved to: High-capacity-MMC-support.zip

We use flash header which will be access by ROM code to do the NAND boot or secure boot. This is a document introduce the flash header.

In the i.MX51 default WINCE6  release, the eCSPI doesn't support multiple bursts mode and set the wait states. Attached was the document and code for how to enable the multiple bursts mode and how to set the wait states between two burst.

In traditional file system, the WinCE image is a signal file “NK.NB0”/”NK.BIN”. And when using NAND flash for storage, since it can’t support XIP, the total “NK.NB0” need be copied into RAM before running. The EBOOT will do this copy. In this way, there are two main shortages: Long boot time and big size RAM requirement. If the WinCE image is big (Included more features), these issues will be critical. The BINFS can fix those two issues fine. It gave the chance to use 32MB RAM run 64MB WinCE image, this can cost down the final products. In BINFS file system, the final WinCE image will be divided into multi-BIN files, and only the XIPKERNEL BIN (Less than 7 MB) need be copied into RAM by EBOOT. The files in other BIN will work with demand paging mode. These files will be loaded into RAM only when they need run.

Current the SSI is set to I2S slave mode in FSL default release BSP. attached the code for how to set it to master mode.

    Attached is the SDHC DMA read supported patch, it is based on WCE600_MX51_ER_1104, it was verified on iMX51 EVK board. The SDHC DMA read can reduce the NK copy time, in this way it can speed up the WinCE boot.

In January 2013, Adeneo Embedded launched 2 dedicated blogs. These blogs are both run by Adeneo Embedded Windows and Linux experts, multiple time MVP awarded. The goal is to provide the windows and linux communities with specific up-to-date information as well as the latest announcements concerning these two companies. Click here to visit our Windows dedicated blog Click here to visit our Linux dedicated blog Follow, comment and subscribe ! Ce document a été généré à partir de la discussion suivante : Adeneo Embedded experts launch 2 dedicated blogs !

Starting from $52, the VAR-SOM-MX6 sets the bar for unparalleled design flexibility. The VAR-SOM-MX6 ensures scalable and simplified development, while also extending the product lifecycle. Thanks to four CPU core assembly options, customers can apply a single System on Module in a broad range of applications to achieve short time-to-market for their current innovations, while still accommodating potential R&D directions and marketing opportunities.     VAR-SOM-MX6 CPU: Freescale iMX6 Key features include: Freescale i.MX6 1.2GHz Quad / Dual / Single core Cortex-A9       2GB DDR3, 1GB SLC NAND Flash       Full HD 1080p video encoding/decoding capability       Vivante GPU providing 2D/3D acceleration       Simultaneous multiple display support       Gigabit Ethernet       TI WiLink™ 6.0 single-chip connectivity solution (Wi-Fi, Bluetooth®)       PCI-Express 2.0, S-ATA 3.0       Camera interface       USB 2.0: Host, OTG       Audio In/Out       Dual CAN Bus This versatile solution's -40 to 85°C temperature range and Dual CAN support is ideal for industrial applications, while 1080p video and graphics accelerations make it equally suitable for intensive multimedia applications. The impressive scalability of the VAR-SOM-MX6 satisfies the needs of the most demanding future application requirements whether faster processing power, enhanced algorithms or improved graphics and video performance to name just a few. The VAR-SOM-MX6 is an all-round solution with broad connectivity and sophisticated video and acceleration graphic capabilities, delivering a range of middle to high end assembly options all from the same product. For more details, please see VAR-SOM-MX6 CPU: Freescale iMX6

OpenGL OpenGL is the premier environment for developing portable, interactive 2D and 3D graphics applications. Since its introduction in 1992, OpenGL has become the industry's most widely used and supported 2D and 3D graphics application programming interface (API), bringing thousands of applications to a wide variety of computer platforms. OpenGL fosters innovation and speeds application development by incorporating a broad set of rendering, texture mapping, special effects, and other powerful visualization functions. Developers can leverage the power of OpenGL across all popular desktop and workstation platforms, ensuring wide application deployment. Source: http://www.opengl.org/about/overview/ On i.MX processors, OpenGL takes the advantage of GPU (Graphics Processing Unit) block to improve 3D performance. Installing and running Demos Get more information on how to install and run demos using OpenGL on i.MX31 on this application note: AN3723 - Using OpenGL Applications on the i.MX31 ADS Board - http://www.freescale.com/files/dsp/doc/app_note/AN3723.pdf?fsrch=1 Develop a simple OpenGL ES 2.0 application under Linux This tutorial shows how to develop a simple OpenGL ES 2.0 application with LTIB and an i.MX51 EVK board. This tutorial can be adapted to i.MX53 that share the same 3D GPU core (Z430) and API (OpenGL ES 2.0).