> 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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