topic Re: MCXN947VDF DAC Data register Won't Change in MCX Microcontrollers

MCXN947VDF DAC Data register Won't Change

AllisonM — Wed, 13 Mar 2024 13:28:58 GMT

Hi, I am using an MCXN947VDF DAC0 with the fsl drivers. The DAC data register does not update when I use the

DAC_SetData(DAC0_PERIPHERAL, DACValue);

command, or when I edit the value directly in the Peripherals debug box.

The DAC is initialised, using the config tool, see code attached below. I have tried it in buffer mode and FIFO mode, and many other modes. I can set values in the GCR register and see them change when I update the code

Does anybody have any ideas?

Re: MCXN947VDF DAC Data register Won't Change

_Leo_ — Wed, 13 Mar 2024 22:46:06 GMT

Hi,

Thank you so much for your interest in our products and for using our community.

The FRDM-MCXN947 has different DAC SDK examples that you can take as reference:

Hope it helps you.

Have a nice day!

Re: MCXN947VDF DAC Data register Won't Change

AllisonM — Thu, 14 Mar 2024 10:28:07 GMT

Hi,

I tried that, got the same result (we had already tried it, but we did it again from scratch). See screenshot below (clearly shows the register and the fact that it is the demo program). We think the processor is running, and we have tried a couple of boards.

Do you have any other ideas?

We have SWK 2.14.0 installed, I guess the demo came from there. And IDE 11.8.0.

Allison

Re: MCXN947VDF DAC Data register Won't Change

AllisonM — Thu, 14 Mar 2024 14:19:04 GMT

We know what is wrong now, hardware issue