RE: nRF5340 Audio DK: Walkie Talkie Demo - LINE IN instead of MIC

fweinrebe — Mon, 22 May 2023 09:59:42 GMT

Hi Amanda,

Many thanks your reply was very helpful. Your post did not show up in my search because of the "_" in the name "WALKIE_TALKIE_DEMO".

I did change it now so that the Walkie Talkie config is removed from the proj.conf file and I added:

CONFIG_STREAM_BIDIRECTIONAL=y

This one was already there:

CONFIG_AUDIO_SOURCE_I2S=y

The Line In on the Gateway is working now but the Headset side is still on PDM Mic

In the Headset side of the code I found the problem, the compiler directives are still enabling the MIC.

In .../src/modules/hw_codec.c:

#if ((CONFIG_AUDIO_DEV == HEADSET) && CONFIG_STREAM_BIDIRECTIONAL)

ret = cs47l63_comm_reg_conf_write(pdm_mic_enable_configure,

ARRAY_SIZE(pdm_mic_enable_configure));

if (ret) {

return ret;

}

#endif /* ((CONFIG_AUDIO_DEV == HEADSET) && CONFIG_STREAM_BIDIRECTIONAL) */

After code was changed to this on the Headset section, the Line In worked on both sides:

#if ((CONFIG_AUDIO_DEV == HEADSET) && (CONFIG_AUDIO_SOURCE_I2S))

if (IS_ENABLED(CONFIG_WALKIE_TALKIE_DEMO))

{

ret = cs47l63_comm_reg_conf_write(pdm_mic_enable_configure,

ARRAY_SIZE(pdm_mic_enable_configure));

if (ret)

{

return ret;

}

else

{

ret = cs47l63_comm_reg_conf_write(line_in_enable, ARRAY_SIZE(line_in_enable));

if (ret)

{

return ret;

}

#endif /* ((CONFIG_AUDIO_DEV == HEADSET) && CONFIG_STREAM_BIDIRECTIONAL) */

EDIT: Using NCS 2.2.0 but 2.3.0 was fixed already.

Regards

Fritz

Amanda Hsieh — Wed, 17 May 2023 20:04:24 GMT

Hi,

Take a look at this post.

Regards,
Amanda H.