To get I2S audio out, what setup or configuration is required?
We are using the UP-CHT01 and I'm trying just to get sound out for alert type sounds. I don't have room for a big stereo DAC. So I have been trying to use this simple DAC/Amp:
I've downloaded the Aaeon Framework referred to here:
I think I have a current BIOS and in it have set I2S/GPIO to I2S
I've connected the decoder/amp to the PCM pins of the GPIO as follows:
Amp Vin to pin2 5V and also tried pin1 3.3v with the same success.
Amp GND to pin6 GND
Amp DIN to pin40 PCM_DOUT
Amp BCLK to pin12 PCM_CLK
Amp LRCLK to pin19 PCM_FS (word select = Left Right Clock = Frame Sync)
Now I am able to get a noise out of the speaker when I play a sound or test the speaker but it's not the right sound. It's just sounds like radio tuning chirps.
Are there more settings in the BIOS or some way to configure the Intel SST Audio Device?