Hello,
I am using the ADAU1467 eval board to test the audio signals on a Bluetooth module. The setup is simple as shown in the following picture :
I input the audio directly through the IN0 serial port pins. The output is set to the analog output 1. Until now, everything worked correctly. However, at some point, I changed one parameter that I had changed multiple times before (the input/output I2S clocks) in the serial port registers, and when I compiled, I couldn't hear any audio anymore. I have tried reverting to prior changes but the issue is still there. To make sure that I didn't mess with any registers, I started a blank project with the same configuration. The only parameters I changed are the MCLK frequency that I set to 128*Fs to have the same frequency as my Bluetooth module, as well as the input0 clocks that I set to slaves from domain0 for either BCLK and LRCLK. Unfortunately, the analog ports don't seem to work anymore (wether it's for input or output). I can confirm that the serial input pins function correctly based on the levels I used in my config.
I have noticed that one detail on the USBi card that I use to program the ADAU. Upon connecting it to my computer, the I2C LED turns on as usual, but after a few seconds, the SPI LED starts blinking as if it weren't powered properly. I don't know if the issue originates from the USBi card.
Would anyone know where the issue could come from (hoping that the ADAU board isn't dead).
ThibDouil