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... for more information.
Best, Yu-Hsuan
On Thu, Oct 17, 2019 at 10:14 PM Hin-Tak Leung htl10@users.sourceforge.net 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...
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