[WP85] How to access to an external audio codec (on IoT extension board)

Legato Linux distribution (Yocto project)
1

Hi,

I am currently working on an extension board providing an external audio codec (using the PCM output available on the IoT connector).
For now, I am focused on the Linux kernel modification in order to detect and initialize the codec but this is not a 2 days work.
For now I managed to initialize the codec through I2C and get a PCM clock on the IOT pin but I do not see any PCM data going to the codec.

I am not sure if I am on the right way to achieve my goal.

Is there some tips/good practices to do that ?

Best Regards

2

Not sure if you have developed the driver for your audio codec.
Please refer to Audio Codec: driver implementation - mangOH Green - mangOH forum.

3

Hi Jordan,

I managed to solve this issue.
My customized Linux kernel is now able to detect and manage the external Audio codec.

BR,
Benjamin

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