Luckfox Forums

Good morning everyone,
I can't get an INMP441 microphone to work on my Lyra Ultra W board.
Can anyone who has connected this type of microphone help me? All the signals are correct on the RM_IO5/6/7 pins, but I keep getting 0 on all my attempts.
Since this is just a few lines of custom_mic_sound, inmp441_codec_stub, and sai1, I sincerely hope a kind soul can help me.
I'm attaching DTS to verify the configuration.
Sincerely,
Artu

We currently do not have an INMP441 device available to verify whether the device tree configuration is correct. We have briefly reviewed the device tree and did not find any obvious issues.
Could you please check whether the L/R pin on the INMP441, which controls the channel, is left floating? According to the datasheet, leaving the L/R pin floating may result in recording failure.