https://devzone.nordicsemi.com/f/nordic-q-a/56759/nrf52832-pdm-issue52832&#39;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 ofen-USTelligent Community 13Tue, 21 Jan 2020 08:34:47 GMThttps://devzone.nordicsemi.com/thread/230004?ContentTypeID=1Tue, 21 Jan 2020 08:34:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e0747a13-fb93-44ac-b10a-c8c215a489f2Kenneth<p>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 <span>apply_old_config.h will translate the NRF_DRV_* to NRFX* defines</span>):<br /><a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/nrfx_migration_user_guide.html">https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/nrfx_migration_user_guide.html</a>&nbsp;</p> <p>I suggest to use NRF_DRV_* defines for PDM since you can find an example here:<br /><a href="https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/pdm-example-on-the-nrf52832">https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/pdm-example-on-the-nrf52832</a>&nbsp;</p><div style="clear:both;"></div>