Implement MIC on m33 on iMX8ULP-EVK

[dhruvinrajpura]

I am using imx8ulp_evk9 
https://www.nxp.com/design/design-center/development-boards-and-designs/i-mx-evaluation-and-developm...

In this there is 2 portion 1 is a53 and another is m33, I want to test mic audio on m33 side for that I have mic : IM69D120V01XTSA1
So I want to record audio via mic and it should play on inbuild 3.5 mm jack but I am not able to find any sample or any thread on that, Can anyone explain?

[JorgeCas]

Hello,

You can use our MCUXpresso SDK builder and take a look on the PDM examples as a reference for your design. 

Best regards.

[dhruvinrajpura]

Hey @JorgeCas 

I taken example evk9mimx8ulp_dsp_pdm_sai_cm33, and build binary of that and generated flash.bin as well, but when I upload flash.bin with serial bootmode and than I turned on dualboot mode I am not seeing logs on m33 console,

Steps I am following for generate flash.bin in imx-mkimage
make SOC=iMX8ULP REV=A2 flash_dualboot_m33_xip

than I am uploading generated flash.bin into board with serial bootmode and than turning on with dualboot mode.

[JorgeCas]

Hello,

I suggest you take a look on the next post.

Best regards.