Hi Hin-Tak,
How about using index instead? You should find the card index and device
index by running "aplay -l" command. The pcm format
is hw:{CARD_INDEX},{DEVICE_INDEX}.
See example part in
https://chromium.googlesource.com/chromiumos/platform/audiotest/+/refs/heads/master/alsa_conformance_test.md
for
more information.
Best,
Yu-Hsuan
On Thu, Oct 17, 2019 at 10:14 PM Hin-Tak Leung <htl10@xxxxxxxxxxxxxxxxxxxxx>
wrote:
> Hi Yu-Hsuan,
>
> I have encountered another problem with the alsa conformance test. It
> works for capture, but not for playback.
>
> The device is -
>
>
> http://wiki.seeedstudio.com/ReSpeaker_6-Mic_Circular_Array_kit_for_Raspberry_Pi/
>
> and running on a pi / raspbian buster.
>
> The actual message is:
>
> Fail - ALSA lib pcm_hw.c:1822:(_snd_pcm_hw_open) Invalid value for card
> snd_pcm_open hw:CARD=seeed8micvoi: No such device
>
> I think the truncation is harmless .
>
> The actual device name according to aplay -L is
> "hw:CARD=seeed8micvoicec,DEV=0" and as I noted earlier, arecord -L shows it
> as "hw:CARD=seeed8micvoicec,DEV=0" also, and the comformance test running
> in CAPTURE mode works, just not in PLAYBACK mode.
>
> Is there anything I can do to look further?
>
> Since it says "invalid value", I tried deleting the parameters around line
> 190 of src/alsa_conformance_helper.c, but perhaps I should do something
> else?
>
> src/alsa_conformance_helper.c-191- conformance_timer_start(timer,
> SND_PCM_OPEN);
> src/alsa_conformance_helper.c:192: rc = snd_pcm_open(handle,
> src/alsa_conformance_helper.c-193- dev_name,
> src/alsa_conformance_helper.c-194- stream,
> src/alsa_conformance_helper.c-195- SND_PCM_NONBLOCK |
> src/alsa_conformance_helper.c-196-
> SND_PCM_NO_AUTO_RESAMPLE |
> src/alsa_conformance_helper.c-197-
> SND_PCM_NO_AUTO_CHANNELS |
> src/alsa_conformance_helper.c-198-
> SND_PCM_NO_AUTO_FORMAT);
> src/alsa_conformance_helper.c-199- conformance_timer_stop(timer,
> SND_PCM_OPEN);
>
>
> Regards,
> Hin-Tak
>
>
>
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