On 09/06/11 18:45, hong zhang wrote:
Liam,
Arecord gets data from DMIC! Using following commands.
"arecord -f dat -D plughw:0,0 dmic.wav" with "amixer cset numid=61 1 and amixer cset numid=60 2" to get data from DMIC after turning off two analog captures.
Information from "arecrod -l" is not sync with ABE routing table. For example, "arecord -l" indicates hw:0,10 is DMIC capture but ABE diagram indicates plughw:0,0 can be used for DMIC input.
Are "arecord -l" and "aplay -l" still useful?
Yes, but not for OMAP4 atm.
Thanks
Liam
---henry
--- On Thu, 6/9/11, Liam Girdwood lrg@ti.com wrote:
From: Liam Girdwood lrg@ti.com Subject: Re: [alsa-devel] asoc: no valid backend routes for PCM: SDP4430 Media To: "hong zhang" henryzhang62@yahoo.com Cc: "alsa-devel@alsa-project.org" alsa-devel@alsa-project.org Date: Thursday, June 9, 2011, 4:42 AM Hi Henry,
On 08/06/11 20:08, hong zhang wrote:
Liam,
I have downloaded kernel tar ball. Three questions
need your help.
- which defconfig should be used in
arch/arm/configs?
I do not see OMAP4 for SDP4430 (blazeboard). Panda does not have DMIC
only blaze has it.There is an omap2plus defconfig.
- On blaze board, I have to turn off two analog
captures and leave DMIC open. Can you verify my gst-launch is correct? I cannot capture voice from DMIC on OMAP4 blaze board us it.
gst-launch-0.10 -v alsasrcnum-buffers=1000 ! 'audio/x-raw-int,rate=8000,channels=1,endianness=1234,width=16,depth=16' ! audioconvert ! wavenc! filesink location=/home/normanc/Desktop/8000.wav
- If I specify DMIC device, command is rejected.
gst-launch-0.10 -v alsasrc device="hw:0,10"
num-buffers=1000 ! 'audio/x-raw-int, rate=8000,channels=1,endianness=1234,width=16,depth=16' ! audioconvert ! wavenc! filesink location=/home/normanc/Desktop/8000.wav
The easiest thing todo first is to get arecord working. Use hw:0,1 for DMIC and make sure you use alsamixer to configure the correct audio paths for DMIC to hw:0,1.
TI support team in France says item 2 should work for
DMIC. But I simply could not get it. TI team says item 2 works for "official release 2.6.35-990-omap4 #9".
I have spent 1 week on it with 2.6.35-990-omap4 #9
Please advise!
It does look like you have not configured the audio route here for the DMIC to hw:0,1. Use the ABE diagram to create your route with alsamixer.
Liam
Thanks.
---henry
--- On Wed, 6/8/11, Liam Girdwood lrg@ti.com wrote:
From: Liam Girdwood lrg@ti.com Subject: Re: [alsa-devel] asoc: no valid backend
routes for PCM: SDP4430 Media
To: "hong zhang" henryzhang62@yahoo.com Cc: "alsa-devel@alsa-project.org"
Date: Wednesday, June 8, 2011, 9:22 AM On 07/06/11 20:59, hong zhang wrote:
Liam,
Actually, I could not prove DMIC on OMAP4
blaze board
is working in both kernel 2.6.35 and 2.6.38 using
arecord
and gstreamer-alsa.
In 2.6.35, arecord returns 44 bytes with read
error
In 2.6.38, arecord collects native data.
Gstreamer-alsa could not get voice after
turning off
analog captures using amixer.
Any information regarding DMIC on OMAP4? I see
people
send DMIC patch to 2.6.38.
DMIC works on OMAP4, can you try my branch :-
https://gitorious.org/omap-audio/linux-audio/commits/lrg/topic/omap-asoc-nex...
Liam
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