SPIM module is one of the master interfaces provided by PN7462 , which is a 32-bit ARM Cortex-M0-based NFC microcontroller, and users may use this interface to connect with up to two SPI slave devices. The NFC reader library provides SPIM driver code in phHal/phhalSPIM, and users may directly use the following APIs in their application to implement simple SPI transaction, just like what is done  in the demo of "PN7462AU_ex_phExHif". While this demo has limitation with some SPI nor flash devices, which need a write-read operation in one NSS session, for example, the SPI nor flash device on OM27462 as below: Please note to solder R202 and connect it to 3V3 to make sure nHold pin has pull-up out of POR. The following is one of the command sets this device supports: This command contains 1 write(9F) followed by 3 read operations in one NSS session, but if you implement it with phhalSPIM_Transmit() and phhalSPIM_Receive() as below: status = phhalSPIM_Transmit(PH_EXHIF_HW_SPIM_SLAVE, PH_EXHIF_HW_SPIM_INIT_CRC, PH_EXHIF_HW_SPIM_APPEND_CRC, PH_EXHIF_HW_SPIM_CRC_INIT, 2, cmd_buf, PH_EXHIF_HW_SPIM_CRC_OFFSET);    status = phhalSPIM_Receive(PH_EXHIF_HW_SPIM_SLAVE, PH_EXHIF_HW_SPIM_INIT_CRC, PH_EXHIF_HW_SPIM_CRC_INIT, data_length, dst, PH_EXHIF_HW_SPIM_CRC_OFFSET);" You will have the following result: expected: NSS   \__________________________/ MOSI     CMD A7-A0 MISO                            DATA       actual:                         NSS   \____________||______________/ MOSI     CMD A7-A0 MISO                           DATA so the pulse between the write and read is the problem, and here we have to handle the NSS line manually, with the help of NSS_VAL and NSS_CONTROL bits in SPIM_CONFIG_REG. so the code should be like this:   Assert NSS   status = phhalSPIM_Transmit(PH_EXHIF_HW_SPIM_SLAVE, PH_EXHIF_HW_SPIM_INIT_CRC, PH_EXHIF_HW_SPIM_APPEND_CRC, PH_EXHIF_HW_SPIM_CRC_INIT, 2, cmd_buf, PH_EXHIF_HW_SPIM_CRC_OFFSET);    status = phhalSPIM_Receive(PH_EXHIF_HW_SPIM_SLAVE, PH_EXHIF_HW_SPIM_INIT_CRC, PH_EXHIF_HW_SPIM_CRC_INIT, data_length, dst, PH_EXHIF_HW_SPIM_CRC_OFFSET);"   De-assert NSS The NSS line assert and de-assert function can be implemented with register bit level APIs, just like below:             PH_REG_SET_BIT(SPIM_CONFIG_REG, NSS_VAL);//de-assert NSS             PH_REG_SET_BIT(SPIM_CONFIG_REG, NSS_CTRL);             PH_REG_CLEAR_BIT(SPIM_CONFIG_REG, NSS_VAL);//assert NSS Please also include the following header files in your application code. #include "ph_Reg.h" #include "PN7462AU/PN7462AU_spim.h" Please notice that phhalSPIM_Transmit() and phhalSPIM_Receive() are Rom based function, which clear NSS_CTRL bit by default. We can not change ROM API's behave but fortunately we have phhalSPIM_TransmitContinue() and phhalSPIM_ReceiveContinue() instead. so the final solution will be like below: Assert NSS   status = phhalSPIM_TransmitContinue(1, cmd_buf);    status = phhalSPIM_ReceiveContinue(3, dst);   De-assert NSS This doesn't mean phhalSPIM_Transmit() and phhalSPIM_Receive() are useless, because they can also help up to configure the SPI master interface, if you don't want to use register bit level API to initial the SPIM module manually. Please note to use 1 byte for write/read length to make these two functions work properly. so the whole pseudo code is like below: phhalSPIM_Init(PH_HW_SPIM_TIMEOUT) ; phhalSPIM_Configure(PH_HW_SPIM_SLAVE, PH_HW_SPIM_MSB_FIRST,                 \                                     PH_HW_SPIM_MODE, PH_HW_SPIM_BAUDRATE,  \                                     PH_HW_SPIM_NSSPULSE, PH_HW_SPIM_NSSPOL) ; status = phhalSPIM_Transmit(PH_EXHIF_HW_SPIM_SLAVE, PH_EXHIF_HW_SPIM_INIT_CRC, PH_EXHIF_HW_SPIM_APPEND_CRC, PH_EXHIF_HW_SPIM_CRC_INIT, 1, cmd_buf, PH_EXHIF_HW_SPIM_CRC_OFFSET);    status = phhalSPIM_Receive(PH_EXHIF_HW_SPIM_SLAVE, PH_EXHIF_HW_SPIM_INIT_CRC, PH_EXHIF_HW_SPIM_CRC_INIT, 1, dst, PH_EXHIF_HW_SPIM_CRC_OFFSET);" Assert NSS   status = phhalSPIM_TransmitContinue(1, cmd_buf);    status = phhalSPIM_ReceiveContinue(3, dst);   De-assert NSS The following steps show how to create a new project based on NFC reader library, please refer to https://www.nxp.com/docs/en/user-guide/UM10883.pdf  on how to import the NFC reader library. 1. Create a new project after importing the NFC reader library. 2. if you installed PN7462 support package, you will see this: 3. add a link to NFC reader lib: 4. add path and enable NFC reader lib in the project: 5. delete cr_startup.c and create the main code as well as the header file: 6. Build result: 7.Debug result: To fetch the ready demo, please submit a private ticket via the guide of https://community.nxp.com/docs/DOC-329745 . Hope that helps, Best regards, Kan

The NXPNCI-KDS_Example for the PN7120/PN7150 Arduino interface boards available in NXP webpage at the time of publishing this document includes a project compatible with KSDK v2.0 for FRDM-K64F platform. With the latest KSDK v2.1 some changes in the drivers along with the later FreeRTOS v9.0.0 make the build process fail when following the instructions in the application note AN11845 NXP NCI KDS Example due to incompatibilities. Meanwhile until the project in NXP webpage is updated there is a temporary project attached to this document fixed to work with KSDK v2.1. The steps to build this project are the same as explained in the appnote, summarized below: - Download and install KSDK v2.1 for FRDM-K64F using MCUXpresso SDK online builder: Welcome to MCUXpresso | MCUXpresso Config Tools  Create a new workspace in KDS IDE. Import the "NXPNCI-KDS_Example_KSDK2.1" project from the archive file. Update the PROJECT_KSDK_PATH build variable according to the installation path of KSDK v2.1. Build the project. For more details please refer to the application note AN11845. Regards! Jorge Gonzalez

This post contains a step by step guide of how to use PN7150 with i.MX RT1060. This document is structured as follows: Overview of PN7150 PN7150 is a Plug-and-Play all-in-one NFC solution for easy integration into any OS environment like Linux and Android, reducing Bill of Material (BoM) size and cost. The embedded Arm® Cortex®-M0 microcontroller core is loaded with the integrated firmware, simplifying the implementation as all the NFC real-time constraints, protocols and the device discovery (polling loop) are processed internally. In few NCI commands, the host SW can configure the PN7150 to notify for card or peer detection and start communicating with them. It has the following salient features: Full NFC forum compliancy with small form factor antenna Embedded NFC firmware providing all NFC protocols as pre-integrated feature Direct connection to the main host or microcontroller, by I2C-bus physical and NCI protocol Ultra-low power consumption in polling loop mode Highly efficient integrated power management unit (PMU) allowing direct supply from a Battery Hardware Requirements      1. OM5578/PN7150ARD      2. i.MX RT1060 EVK Evaluation Board + usb micro cable        Using PN7150 with i.MX RT1060 Hardware Connections The hardware connections are simple. Both the EVKB-IMXRT1060 board and OM5578/PN7150ARD board have an Arduino interface. So, mount the PN7150ARD board with male Arduino connector onto the female Arduino connector of the EVKB-IMXRT1060 board.  Running the Demo If this is the first time you’re using EVK-MIMXRT1060 board, follow the getting started guide first: i.MX RT1060 Evaluation Kit | NXP . Make sure to install the SDK package for EVK-MIMXRT1060 board which is required for the project to run.   Download the ‘evkbimxrt1060_PN7150’ package which you will find attached to this post. Drag and drop the downloaded package to the “Project Explorer” tab of your MCUXpresso IDE workspace (If you don’t have MCUXpresso, it can be downloaded for free from here: https://www.nxp.com/support/developer-resources/software-development-tools/mcuxpresso-software-and-tools/mcuxpresso-integrated-development-environment-ide:MCUXpresso-IDE Now that the package has been imported to the MCUXpresso IDE (via drag and drop), click on Debug icon from the Quickstart panel to begin a debug session. Once the debug session has started, click on the run icon to run the code: After step 3, the project should be running now. The project contains basic discovery loop functionality. Here is how the output looks in the console tab on MCUXpresso: Bring any NFC card near the PN7150 board’s antenna and the output console will show the detection and type of the card. For example, in the picture below, we can see that type 4 card was detected: Available Resources AN11990 NXP-NCI MCUXpresso example document. (https://www.nxp.com/docs/en/application-note/AN11990.pdf) The example project explained in this project was ported to i.MX RT1060 using section 5.3 and 6 of the above mentioned document. PN7150 datasheet (https://www.nxp.com/docs/en/data-sheet/PN7150.pdf) PN7150 User Manual (https://www.nxp.com/docs/en/user-guide/UM10936.pdf) PN7150 NFC Controller SBC Kit User Manual  (https://www.nxp.com/docs/en/user-guide/UM10935.pdf)