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LED control for the ADAU1401EBZ eval board

Question asked by amxguru@gmail.com on Nov 26, 2012
Latest reply on Dec 13, 2012 by BrettG

Does anyone have a sample file of how this might be done? I am trying to achieve a simple result with the ADAU1401EBZ eval board, but currently all four LEDs are always on, even with no audio input signal.

I  need to trigger the LEDs on MP-8 and MP-9 for signal presence on left and right audio ins respectively. I also need to be able to adjust the threshold of that signal level which causes the LED to light, somewhere  within a range of  -40 to -10dB.

Thanks,

AL

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