Questions about using DMIC on RT1170-EVK

[Shawn_]

Hello everyone,

I want to learn to use the four DMICs on RT1170-EVK, but I can't find any examples of DMICs and driver files like fsl_dmic.c and fsl_dmic.h in SDK2.11.0. Does NXP have some introduction and Demos for DMIC on RT1170?

Thanks and Regards

[kerryzhou · Accepted solution]

Hi @Shawn_ ,

   Thank you for your interest in the NXP MIMXRT product, I would like to provide service for you.

   To the RT1170, it doesn't use the DMIC IP, it is using the PDM ad the DMIC IP.

   Please refer to this code:

\SDK_2_11_0_MIMXRT1170-EVK\boards\evkmimxrt1170\driver_examples\pdm\pdm_sai_multi_channel_edma

  It will use the EVK on board U40,U41 DMIC.

So, your used driver is fsl_pdm, fsl_pdm_edma.

Wish it helps you!

Best Regards,

Kerry