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Need Clarification of 2.3.1 SDK Examples and MCUXpresso Config

Question asked by Keith Smith on Apr 23, 2018
Latest reply on Sep 5, 2018 by Lucas Magasweran

Using MCUXpresso IDE, I have cloned a few 2.3.1 SDK examples for the FRDM-K22F eval board.

I then created the <peripheral, clock_config, pin_mux>.<c,h> files using MCUXpresso Config for the FRDM-K22F eval board.


The SDK pin_mux.c file has YAML comments, as do the files generated by MCUXpresso Config.


However, the SDK pin_mux.c file seems to be an example minimal version of the Config pin_mux.c.

The SDK files board.<c,h> are the equivalent to peripheral.<c,h> in Config.


main() in an SDK example calls




Using the Config files it appears that main() should call




BOARD_InitBootPeripherals();   // BOARD_InitDEBUG_UARTPeripheral() called.


My goal is to be able to configure all the peripherals I need for a target K22 project. The SDK examples configure only one peripheral per example. My project will need to have multiple peripherals, ADC, GPIO, etc. configured at boot.


I believe I could substitute the files from Config for the board/pin_mux/clock_config files in the SDK and call the appropriate functions in main().


Is this an expected method to customize an SDK example?