[beagleboard] recording audio not working on BBB deb 8.7?

[hussainali0935]

Hi everyone!

I'm using beagle bone black and I want to use "Audio cape Rev B" for 
playing and recording audio.

I installed debian 8.7 image on BBB and changed the uEnv.txt and added 
proper entry in it to load the Audio cape.

Now, audio cape is loaded and i can play audio with aplay utility 
successfully. But recording is not working.

issuing arecord command results the below error message:

*arecord: set_params:1297: Unable to install hw params*

dmesg messages is as below:
*davinci-mcasp 48038000.mcasp: Too fast reference clock(24576000)*
*davinci-mcasp 48038000.mcasp: stream has more channels (2) than are 
enabled in mcasp (0)*
*davinci-mcasp 48038000.mcasp: Asoc: can't set 48038000.mcasp hw params: 
-22*

where is the source of the problem?

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[beagleboard] recording audio not working on BBB deb 8.7?

[hussainali0935]

Hi everyone!

I'm using beagle bone black and I want to use "Audio cape Rev B" for 
playing and recording audio.

I installed debian 8.7 image on BBB and changed the uEnv.txt and added 
proper entry in it to load the Audio cape.

Now, audio cape is loaded and i can play audio with aplay utility 
successfully. But recording is not working.

issuing arecord command results the below error message:

*arecord: set_params:1297: Unable to install hw params*

dmesg messages is as below:
*davinci-mcasp 48038000.mcasp: Too fast reference clock(24576000)*
*davinci-mcasp 48038000.mcasp: stream has more channels (2) than are 
enabled in mcasp (0)*
*davinci-mcasp 48038000.mcasp: Asoc: can't set 48038000.mcasp hw params: 
-22*

where is the source of the problem?

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[beagleboard] playing audio is work but recording is not work.

[hussainali0935]

Hi everyone.
I am using BBB with debian 8.7 image and using audio cape rev B for playing 
and recording audio.
I could load BB-BONE-ADUI-02 overlay by adding proper entry in the 
uEnv.txt. ( I'm  forced to remove universal cape, otherwise audio cape 
would not loaded).
After that i could play audio file by aplay command and test audio with 
speaker-test utility successfully.
But arecord command is not working. The Error log is as below:

*"unable to install hw params"*

and dmesg log is as below:

*davinci-mcasp 48038000.mcasp: too fast reference clock(24576000)*

*davinci-mcasp 48038000.mcasp: stream has more channels (2) than are 
enabled in mcasp (0)*
*davinci-mcasp 48038000.mcasp: Asoc: can't set 48038000.mcasp hw params: 
-22*

where is the source of the problem?

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[beagleboard] trouble with Ethernet link when connecting two BBB peer to peer.

[hussainali0935]

Hi everyone,
I've faced with a problem about using ethernet cable, when i want to 
connect two BBB peer to peer. 
When i connect one BBB through a ethernet cable to a switch or to my host 
computer, the link becomes successfully up and i can connect to BBB.
But when i connect two BBB peer to peer, result is different. in this case, 
link not brought up and the LEDs of ethernet ports not light up and hence i 
can't ping from one BBB to another one.
Some points are here:
1- Sometimes, after a while about 1, 2, minutes... or more, the link 
becomes up.
2- If we reset one of the boards, link becomes up.
3- according to smsc.c driver notes, "Due to HW bug, LAN8700 sometimes does 
not detect presence of energy in the Ethernet cable in Energy Detect 
Power-Down mode". So i disabled energy detect mode according to 
 
https://git.backbone.ws/linux/backbone-sources/commit/d88ecb373bd1877acc43e13311a8e0e6daffc3d
 

but the resule is same.
4- The phy chip on BBB is LAN8710, and debian 8.3 as OS.

Best Regards.


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Re: [beagleboard] 4.1 repo

[hussainali0935]

Thanks Robert and Rick,
I'll be appreciate if you inform about the result of your work on audio in 
4.x.

I did not have any problem with audio in 3.8. and now I'm trying to get the 
audio to work on uSomiQ Board.
uSomIQ AM335x is a BeagleBone Black clone with added more robust SLC NAND 
flash and it's schematic is almost 1:1 copy of BBB.
I have trouble with it. Audio comes out but is noisy.
I've also tested board with the same kernel and RFS as BBB ( after some 
minor change in capemgr diver) but the result has not changed.
If you had any experience with this board, I'll be glad if share your 
comment here.

Best regards.


On Wednesday, October 14, 2015 at 1:26:57 AM UTC+3:30, Rick M wrote:
>
>
> > On Oct 13, 2015, at 05:56 , Robert Nelson  > wrote: 
> > 
> > On Tue, Oct 13, 2015 at 2:23 AM, hussain ali  > wrote: 
> >> Thanks for your attention and quick reply. 
> >> I have another problem. 
> >> I want to drive TLV320AIC23 codec to play and record audio. 
> >> I Migrated from kernel 3.8 to 4.1, because kernel 3.8 dose not support 
> this 
> >> codec, and 
> >> i couldn't add this codec to kernel 3.8. 
> >> What is your idea? Is there any way to add this codec to kernel 3.8? 
> >> It is ideal for me to use kernel 3.8, because of stability of this 
> >> version.But if i can drive codec in kernel 4.1 
> >> it is not a too bad solution! 
> > 
> > 3.8 isn't actually that stable, both mmc and usb are ticking time 
> > bomb's just waiting to opps.. 
>
> I'd love to move to 4.x, if I could get the audio to work correctly. Still 
> struggling with it (I have verified that both the audio cape and my own 
> cape work great in 3.8.x). 
>
> -- 
> Rick Mann 
> rm...@latencyzero.com  
>
>
>

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Re: [beagleboard] 4.1 repo

[hussainali0935]

Hi Shadi,
I have same problem .( Transmit Buffer Underflow problem) .
I'm using kernel 4.1.1 and audio cape rev B ( that uses aic3104 codec) for 
playing audio.
 
I will be glad if you tell me that you solve the problem or not.

Regards,



On Wednesday, August 12, 2015 at 7:56:08 PM UTC+3:30, Shadi Abdu-Rahman 
wrote:
>
>
> But i think audio (output) was still not working.. 
>>
>>
>>
> Hi Robert, 
>
> Did you get a chance to look at the audio out and whether it's working?
>
> Kind Regards,
> Shadi  
>

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[beagleboard] How could i add tlv320aic23 codec to the beagle bone black kernel?

[hussainali0935]

 

I have a chip that uses tlv320aic23 codec driver for playing audio, And i 
want to drive this chip by BBB board. But this codec dosent exist in the 
BBB kernel menuconfig. How could i add this codec to the kernel?


Regards.

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