PDM does not work in Thingy:52 with SDK 15.2

RE: PDM does not work in Thingy:52 with SDK 15.2

neosarchizo — Thu, 10 Jan 2019 17:20:40 GMT

My local distributer(Prochild Inc in South Korea) solved this problem.

I missed to change thing H/W version to THINGY_HW_v1_0_1.

RE: PDM does not work in Thingy:52 with SDK 15.2

neosarchizo — Thu, 10 Jan 2019 17:18:49 GMT

I know it. But I have to do it because I contracted to develop it for my client.
I solved it. I missed to change thingy H/W version to THINGY_HW_v1_0_1.

RE: PDM does not work in Thingy:52 with SDK 15.2

Edvin — Wed, 02 Jan 2019 14:27:13 GMT

Hello,

First, I just have to say that using advertising packets to transfer audio data doesn't sound like the best idea for two reasons:

1: Advertisements are not reliable. You can't guarantee in any way, or figure out whether or not a packet was actually picked up on the receiver.

2: Advertisement packets doesn't have a very high throughput, and you have to "manually" update the advertising data.

That being said. It seems like your problem is the PDM setup. Can you please check the return value of nrfx_pdm_buffer_set() (drv_mic_start() -> drv_audio_enable() -> nrfx_pdm_buffer_set().

Does it return NRFX_SUCCESS (==0)?

BR,

Edvin