# Audio Playback Mangoh Yellow + WP7611 **URL:** \ **Category:** mangOH Yellow\ **Created:** [March 9, 2021, 3:30pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297 "2021-03-09T15:30:57Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![jameswollaeger](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@jameswollaeger](https://mangoh.discourse.group/u/jameswollaeger)\ **Post date:** [March 9, 2021, 3:30pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/1 "2021-03-09T15:30:57Z")
Has anyone tried performing audio playback on a mangoh yellow? I’ve tried a few different approaches, but the only way it works for me is if I do not use the mangoh repo makefiles. (IE ‘make yellow\_wp76xx’). If i build a very basic system using app (voiceCallApp) and its associated sdef file, audio and microphone works fine(after getting custom changed mangoh yellow boards with R713 and R714 changes). But if I try and build an image for mangoh and use test apps like ‘audioPlaybackRec’, nothing works. I cannot hear anything played over the headset. For my application, I need to use the mangoh makefiles as I require wifi, but I suspect something is wrong or changed for the audio when doing this. Command I’m using for audioPlaybackRec: app runProc audioPlaybackRec --exe=audioPlaybackRecTest – PB\_SAMPLES MIC /usr/share/sounds/0-to-9.wav 1 8000 16 ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [March 9, 2021, 4:13pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/2 "2021-03-09T16:13:09Z")
How about using AT command? > [@Mangoh Red Voice Call App not able to hear the response](https://mangoh.discourse.group/t/mangoh-red-voice-call-app-not-able-to-hear-the-response/5570/2): > > I don’t see problem to hear voice on mangoh board when voice call. How about using at!avaudio to check if you can do audio playback first? root@swi-mdm9x28-wp:~# microcom /dev/ttyAT ati3 Manufacturer: Sierra Wireless, Incorporated Model: WP7605 Revision: SWI9X07Y\_02.28.03.05 000000 jenkins 2019/07/08 11:04:16 IMEI: 353532100020465 IMEI SV: 6 FSN: 2A917285070404 +GCAP: +CGSM OK at!avcfg=5,1,2 OK AT!AVSETPROFILE=5 OK AT!AVAUDIO=1,1,/home/root/0-to-9\_8k.wav OK [1674.996800] afe\_… ---
**Author:** ![jameswollaeger](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@jameswollaeger](https://mangoh.discourse.group/u/jameswollaeger)\ **Post date:** [March 10, 2021, 4:08pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/3 "2021-03-10T16:08:40Z")
@jyijyi : Tried the the following (after sending the file to the /home/root directory and the only thing I hear in the headphones is a click when it starts and a click when it ends: root@swi-mdm9x28-wp:~# microcom /dev/ttyAT ati3 Manufacturer: Sierra Wireless, Incorporated Model: WP7611 Revision: SWI9X07Y\_02.37.00.00 6c0fe9 jenkins 2020/01/17 01:29:47 IMEI: 355882100112020 IMEI SV: 11 FSN: ZU026280610610 +GCAP: +CGSM,+DS,+ES OK at!avcfg=5,1,2 OK AT!AVSETPROFILE=5 OK AT!AVAUDIO=1,1,/home/root/0-to-9\_8k.wav ERROR AT!AVAUDIO=1,1,/home/root/0-to-9\_8k.wav ERROR root@swi-mdm9x28-wp:~# microcom /dev/ttyAT AT OK AT!AVAUDIO=1,1,/home/root/0-to-9.wav OK ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [March 10, 2021, 4:21pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/4 "2021-03-10T16:21:23Z")
Probably need to remove the mangoh yellow application one by one to identify which part makes the problem > ---
**Author:** ![jameswollaeger](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@jameswollaeger](https://mangoh.discourse.group/u/jameswollaeger)\ **Post date:** [March 10, 2021, 9:03pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/5 "2021-03-10T21:03:54Z")
I spent all day doing as recommended and found that audio is not restored till I comment out the following 2 files in the kernel. I spent a while trying to figure out what in mangoh\_yellow\_dev.mdef is causing the issue, but its too complicated for me to figure out. Any way this can be passed to internal teams? kernelModules: { //$CURDIR/linux\_kernel\_modules/mangoh/mangoh\_yellow\_dev //$CURDIR/linux\_kernel\_modules/rtc\_sync/rtc\_sync } Actual file is attached. Thanks ![yellow.sdef|attachment](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/4/4812e65484f4b5130e6dd6404a6ab783736723e9.sdef) (2.9 KB) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [March 11, 2021, 3:43am UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/6 "2021-03-11T03:43:17Z")
Hi @asyal Any idea on this? ---
**Author:** ![asyal](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/asyal/32/78_2.png) [@asyal](https://mangoh.discourse.group/u/asyal)\ **Post date:** [March 11, 2021, 5:58pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/7 "2021-03-11T17:58:09Z")
Does WiFi and audio work with these two drivers commented out? ---
**Author:** ![jameswollaeger](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@jameswollaeger](https://mangoh.discourse.group/u/jameswollaeger)\ **Post date:** [March 11, 2021, 6:10pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/8 "2021-03-11T18:10:58Z")
Audio works when those 2 drivers are commented out, but the i2c bus was taken down without the drivers, so wifi doesn’t work anymore and that is mandatory for our application. ---
**Author:** ![asyal](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/asyal/32/78_2.png) [@asyal](https://mangoh.discourse.group/u/asyal)\ **Post date:** [March 11, 2021, 6:22pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/9 "2021-03-11T18:22:09Z")
Can you try this: in file linux\_kernel\_modules/expander/expander.c ret = gpio\_initial\_status(pdev, &dev\_attr\_pcm\_sel, PCM\_SEL, 0, &dev-\>pcm\_sel\_val, false); set the value of PCM\_SEL to 1 and rebuild. This would be the first thing to try. ---
**Author:** ![jameswollaeger](https://avatars.discourse-cdn.com/v4/letter/j/e495f1/32.png) [@jameswollaeger](https://mangoh.discourse.group/u/jameswollaeger)\ **Post date:** [March 11, 2021, 7:29pm UTC](https://mangoh.discourse.group/t/audio-playback-mangoh-yellow-wp7611/6297/10 "2021-03-11T19:29:34Z")
That fixed it! Thanks so much.