Determining the appropriate peripheral driver for a device

socalsparky — Tue, 09 Aug 2022 20:24:39 GMT

In the MCUX SDK (https://github.com/NXPmicro/mcux-sdk) there are many variants of a driver for a particular peripheral. For example, consider a SPI peripheral for which there are many drivers:

mcux-sdk/drivers/spi/fsl_spi.c

mcux-sdk/drivers/flexcomm/fsl_spi.c

mcux-sdk/drivers/lpc_minispi/fsl_spi.c

mcux-sdk/drivers/ecspi/fsl_ecspi.c

mcux-sdk/drivers/lpspi/fsl_lpspi.c

etc. In addition, in many cases there are derivatives of these drivers for DMA use.

I understand the implementations are for different silicon implementations of the peripherals. For example, a SPI peripheral in i.MX RT1176 can be a different architecture/silicon design from the SPI peripheral in an LPC55S69, and therefore require a different driver implementation.

What is the correct way to identify the "right" driver for a given device?

The best I have found so far is to reference the appropriate mcux-sdk/devices/<device>/all_lib_device_<device>.cmake and look at the included drivers/*

Is this the recommended and most official way, or is there something else?

Re: Determining the appropriate peripheral driver for a device

Julián_AragónM — Wed, 10 Aug 2022 15:15:04 GMT

Hi @socalsparky,

We currently have the "MCUXpresso SDK Builder", where you can select any development board available, and build an SDK with all the middleware needed for you application:

Select Board | MCUXpresso SDK Builder (nxp.com)

I hope you find this helpful!

Best regards, Julian

MCUXpresso SDKのトピックDetermining the appropriate peripheral driver for a device

Determining the appropriate peripheral driver for a device

Re: Determining the appropriate peripheral driver for a device