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Altera_Forum
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10 years ago

Cannot Program Wm8731 audio codec using I2C in DE1-SOC dev kit

Hello Alter Gurus; I am in need of your help. I am trying to configure the settings of WM8731 audio codec found in Altera DE1-SOC using I2C and every try that i made ends up unsuccessful. I do ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

If a logic analyzer is available, connect it to the I2C bus and verify the waveforms on the actual hardware. Look not only for I2C protocol conformance, but at the values set to the CODEC. If they are OK, look also at the I2S signals. You may have silence because of problems there. Remember that I2S uses signed not unsigned values.