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PDM Driver for Zephyr on nrf52840

I want to implement noise sensor based on PDM (pulse density modulation) , But I cant found any PDM driver or API based on Zephyr , I used MP34DT05(st semi-conductor).

So give me some reference or sample for this ,

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Simon over 3 years ago in reply to Hinal Tailor +1 verified

Are you encountering the issues during compile time or run time? I assume during building/compiling. What changes have you done? What error message did you get? Could you attach the error(s) you are…

0 Simon over 3 years ago in reply to Hinal Tailor
There is currently no i2s nrfx driver in Zephyr. Check out Zephyr issue 11702-->

https://github.com/adamkondraciuk/zephyr/tree/i2s_test, where a developer has added support for I2S.

Both driver and dts support is added:

https://github.com/adamkondraciuk/zephyr/blob/i2s_test/boards/arm/nrf52840_pca10056/nrf52840_pca10056.dts#L199-L206

https://github.com/adamkondraciuk/zephyr/blob/i2s_test/dts/arm/nordic/nrf52840.dtsi#L239-L246

https://github.com/adamkondraciuk/zephyr/blob/i2s_test/drivers/i2s/nrfx_i2s.c

The code above was written for a quite old version of NCS, so you may have to modify it a little to make it work with a newer version

Best regards,

Simon
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