5.2 Configuring Bus (SPI) Wrapper

Perform the following changes in the bus (SPI) wrapper file.

• Rename the file nm_bus_wrapper_sam21.c to nm_ bus_wrapper_xyz.c,where xyz = the third party MCU.
• Modify the following set of functions based on the third party MCU bus (SPI).
  • nm_bus_init – This function is used for SPI bus initialization.
    
  • nm_bus_ioctl – This function provides functionality to send/receive data using SPI.

    

  • nm_bus_deinit – This function is used to de-initialize the SPI bus.

    

  • nm_bus_reinit – This function is used to re-initialize the SPI bus.