Hi Hin-Tak,
Maybe it is not the correct pcm name. I guess the correct one is
"hw:seeed8micvoicec,0". Could you try it?
By the way, you can also use aplay -D {device_name} to make sure
whether the name is correct or not.
Best,
Yu-Hsuan
Hin-Tak Leung <htl10@xxxxxxxxxxxxxxxxxxxxx> 於 2019年10月18日 週五 下午6:56寫道：
>
> > On Friday, 18 October 2019, 04:27:29 BST, Yu-hsuan Hsu <yuhsuan@xxxxxxxxxx> wrote:
>
> > 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.
>
> Dear Yu-Hsuan,
>
> Yes, using card index and device index works. Here is the output:
>
> $ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
> Subdevices: 7/7
> Subdevice #0: subdevice #0
> Subdevice #1: subdevice #1
> Subdevice #2: subdevice #2
> Subdevice #3: subdevice #3
> Subdevice #4: subdevice #4
> Subdevice #5: subdevice #5
> Subdevice #6: subdevice #6
> card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 IEC958/HDMI [bcm2835 IEC958/HDMI]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 0: ALSA [bcm2835 ALSA], device 2: bcm2835 IEC958/HDMI1 [bcm2835 IEC958/HDMI1]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 1: seeed8micvoicec [seeed-8mic-voicecard], device 0: bcm2835-i2s-ac10x-codec0 ac10x-codec.1-0035-0 []
> Subdevices: 1/1
> Subdevice #0: subdevice #0
>
> As I mentioned earlier I am interested in card 1, the seeed8micvoicec entry. Here it is the conformance test output:
>
>
> 20 passed, 0 failed
> Device Information
> Name: hw:CARD=1,0
> Stream: PLAYBACK
> Format: ['S32_LE']
> Channels: [8]
> Rate: [8000, 11025, 16000, 22050, 44100, 48000]
> Period_size range: [8, 8192]
> Buffer_size range: [16, 16384]
> Test Params
> Set channels 8: pass
> Set format S32_LE: pass
> Set rate 8000: pass
> Set rate 11025: pass
> Set rate 16000: pass
> Set rate 22050: pass
> Set rate 44100: pass
> Set rate 48000: pass
> Test Rates
> Set rate 8000: pass
> Set rate 11025: pass
> Set rate 16000: pass
> Set rate 22050: pass
> Set rate 44100: pass
> Set rate 48000: pass
> Test All Pairs
> Set channels 8, format S32_LE, rate 8000: pass
> Set channels 8, format S32_LE, rate 11025: pass
> Set channels 8, format S32_LE, rate 16000: pass
> Set channels 8, format S32_LE, rate 22050: pass
> Set channels 8, format S32_LE, rate 44100: pass
> Set channels 8, format S32_LE, rate 48000: pass
>
> There is probably a bug somewhere on not being able to use the card name?
>
> Regards,
> Hin-Tak
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