nRF52832 PDM issue

[Wwing]

52832's PDM function. After initialization, call the nrf_pdm_enable function, and then call the nrfx_pdm_start function. NRFX_PDM_ENABLED is set to 1. But the clock pin always has no result output. What could be the problem? I tried it in the order of this manual. At least there should be a clock. I checked that the module is ENABLE.

[Kenneth]

Part of the problem in your case is that I see the define you are referring to is for nrfx drivers, while the api you refer to is nrf_drv. You need to follow this description here on which layer and api you want to work with (e.g. NRF_DRV_* take presence over NRFX* if both are defined in sdk_config.h, since apply_old_config.h will translate the NRF_DRV_* to NRFX* defines):
https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/nrfx_migration_user_guide.html 

I suggest to use NRF_DRV_* defines for PDM since you can find an example here:
https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/pdm-example-on-the-nrf52832