Hi Jon,
So we’ve used an oscilloscope to see if the BCLK, LRCL and DOUT are driven. I’ve compared the outputs of Jetson (where the mic still does not work…) to Raspberry Pi where the same microphone works well. Here are the outputs for both:
LRCL Signal:
(a) Raspberry Pi
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(b) Jetson (1.5V)
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BCLK Signal:
(a) Raspberry Pi
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(b) Jetson (1.5V)
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GND and 3.3V are the same on both Raspberry Pi and Jetson:
GND:
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3.3V:
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However, microphone signal is only obtained on Raspberry:
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Perhaps the drivers on Jetson are not working correctly?
Again, your help is very much appreciated!!!
Best,
Kira
