How to use SPI peripheral on K10?

tsweeney — Mon, 06 Feb 2023 19:29:57 GMT

I am attempting to write a SPI driver for the MK10DX256. The problem I am facing is that I cannot write to the SPI1_PUSHR register.

I have already looked at code examples from Processor Expert and referenced this blog post with no luck. https://community.nxp.com/t5/Kinetis-Microcontrollers/SPI-example-on-Kinetis-KL16/td-p/295652

The driver starts with an initialization function where I do the following:

SPI_MemMapPtr poSpiPort = SPI1_BASE_PTR;

SIM_SCGC6 |=SIM_SCGC6_SPI1_MASK;

In the last line of the code I am not able to update the PUSHR register. All of the previous register writes work. In Code Warrior in the debugger "Registers" view I can see all of the registers updating, except for the PUSHR register.

One indication that I have not set up the registers correctly is that the SR[TXRXS] flag is 0, indicating that the TX and RX operations are disabled (DSPI is in stopped state). I'm not sure why the flag is cleared because I have met all the requirements for transitioning to the Start state.

1. SR[EOQF] bit is clear

2. MCR[FRZ] bit is clear

3. MCR[HALT] bit is clear

Any help is appreciated!

Re: How to use SPI peripheral on K10?

Pavel_Hernandez — Thu, 09 Feb 2023 01:52:02 GMT

Hello, my name is Pavel, and I will be supporting your case, let me get into your case and when I have more information, I will contact you.

Best regards,
Pavel

Re: How to use SPI peripheral on K10?

Pavel_Hernandez — Sat, 11 Feb 2023 04:59:59 GMT

Hello,

I recommend using the examples from the MK60 the module is similar to the MK10, and you can find more examples in the SDK Welcome | MCUXpresso SDK Builder (nxp.com).

Best regards,
Pavel

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How to use SPI peripheral on K10?

Re: How to use SPI peripheral on K10?

Re: How to use SPI peripheral on K10?