External Stereo hardware codec with nrf5340 Audio DK

RE: External Stereo hardware codec with nrf5340 Audio DK

Michal — Mon, 15 Aug 2022 11:44:12 GMT

Hello Adarsh,

Those functions are defined in modules/hal/cirrus-logic/common/regmap.c

Assuming you are using VS Code with the nRF Connect extension you should also be able to select the function and click F12 to "Go to Definition", or right click it with your mouse and select that from the context menu.

If that does not work, you may need to build the project first. It may be also be a good idea to create an unmodified sample to have on the side for the ease of digging into the code.

Best regards,

Michal

RE: External Stereo hardware codec with nrf5340 Audio DK

Adarsh_1 — Mon, 15 Aug 2022 07:39:58 GMT

Hai Michal,

Thanks for the clarification. Since there are no documentation which explains the API, can you help me figure out few things?

I cannot find information about the function "regmap_read" and "regmap_write". These are called inside "cs47163_read_reg" and "cs47163_write_reg" in cs47163.c file. Which file contains the definition for these functions?

Thanks for your time.

Best regards,

Adarsh

RE: External Stereo hardware codec with nrf5340 Audio DK

Michal — Fri, 12 Aug 2022 11:40:09 GMT

Hello Adarsh,

I have contacted the developers and other than the things in that screenshot, they recommend you to look at the API in the hw_codec.h and make your own API implementation for the new codec.

Remember to set hw_codec_sel_out to GPIO_OUTPUT_HIGH to make sure the external codec is selected

I don't think I have any more documentation to link to currently other than the nRF5340 Audio page which you have already looked at.

Best regards,
Michal