[AudioI] read error
Jacek Lipkowski
sq5bpf at lipkowski.org
Thu Jul 14 19:52:04 UTC 2022
Also general raspberry pi advice:
If something works sometimes, and sometimes doesn't, then put at least
4700uF on the +5V line on the 40-pin header, and use a good power supply
which gives 5.1V and enough current. I've fixed quite a few projects this
way.
Jacek
On Wed, 13 Jul 2022, Matt Flax via People wrote:
> Date: Wed, 13 Jul 2022 00:02:59 +0000
> From: Matt Flax via People <people at lists.audioinjector.net>
> Reply-To: Matt Flax <matt at audioinjector.net>
> To: mark <mvlambiase at gmail.com>
> Cc: "people at lists.audioinjector.net" <people at lists.audioinjector.net>
> Subject: Re: [AudioI] read error
>
> OK, I2C is working, the CPU can communicate with he audio codec IC. That
> means that the CPU can setup the registers.
>
> When it takes many seconds for the system to fail (on aplay or arecord)
> with something like :
>
> arecord: pcm_read:2152: read error: Input/output error
>
> It means that the I2S bus has failed to clock. In this case you will
> want to interrogate the 40 pin header on the card, make sure it is
> cleanly soldered. Also if you have a cro handy, connect to the I2S bus
> lines and look for clocking and data. If you have any issues with this,
> look for dropped solder, dry solder joints or anything which would
> disrupt the signals.
>
> When you see errors like this :
>
> arecord: set_params:1407: Unable to install hw params:
>
> It means that ALSA couldn't run the *_hwparam_* functions in the driver.
> In this case the card can't do 44100 Hz sample rates, try to use plughw:
> instread of hw:
>
>
> Matt
>
>
> On 13/7/22 05:01, mark wrote:
>> I noticed some weirdness and decided to start with a fresh Bullseye
>> image.
>> After a full-upgrade I made the changes mentioned on the git page. The
>> devices show up when listed, but I cannot get the speakers or
>> microphones (on-board) to work. It seems like the device is seen but
>> not really set up.
>>
>> Thanks in advance for any help you can provide.
>>
>> aplay and arecord see the device:
>>
>> pi at soundpi:~ $ arecord -l
>>
>> **** List of CAPTURE Hardware Devices ****
>> card 0: audioinjectorul [audioinjector-ultra], device 0:
>> bcm2835-i2s-cs4265-dai1 cs4265-dai1-0 [bcm2835-i2s-cs4265-dai1
>> cs4265-dai1-0]
>> Subdevices: 1/1
>> Subdevice #0: subdevice #0
>> pi at soundpi:~ $ aplay -l
>> **** List of PLAYBACK Hardware Devices ****
>>
>> card 0: audioinjectorul [audioinjector-ultra], device 0:
>> bcm2835-i2s-cs4265-dai1 cs4265-dai1-0 [bcm2835-i2s-cs4265-dai1
>> cs4265-dai1-0]
>> Subdevices: 1/1
>> Subdevice #0: subdevice #0
>> card 1: vc4hdmi0 [vc4-hdmi-0], device 0: MAI PCM i2s-hifi-0 [MAI PCM
>> i2s-hifi-0]
>>
>> Subdevices: 1/1
>> Subdevice #0: subdevice #0
>> card 2: vc4hdmi1 [vc4-hdmi-1], device 0: MAI PCM i2s-hifi-0 [MAI PCM
>> i2s-hifi-0]
>>
>> Subdevices: 1/1
>> Subdevice #0: subdevice #0
>>
>>
>> But even though I can see them, I don't seem to know how to use them.
>> I get an error trying to play on card 0 that gives an interesting
>> error that may point to a config or software issue:
>>
>> pi at soundpi:~/Desktop/recordings $ aplay -D plughw:0,0 CantinaBand3.wav
>> Playing WAVE 'CantinaBand3.wav' : Signed 16 bit Little Endian, Rate
>> 22050 Hz, Mono
>> aplay: set_params:1407: Unable to install hw params:
>>
>> ACCESS: RW_INTERLEAVED
>> FORMAT: S16_LE
>> SUBFORMAT: STD
>> SAMPLE_BITS: 16
>> FRAME_BITS: 16
>> CHANNELS: 1
>> RATE: 22050
>> PERIOD_TIME: (125011 125012)
>> PERIOD_SIZE: (2756 2757)
>> PERIOD_BYTES: (5512 5514)
>> PERIODS: (3 5)
>> BUFFER_TIME: (500045 500046)
>> BUFFER_SIZE: 11026
>> BUFFER_BYTES: 22052
>> TICK_TIME: 0
>> pi at soundpi:~/Desktop/recordings $
>>
>>
>>
>>
>>
>> On Tue, Jul 12, 2022 at 7:08 AM mark <mvlambiase at gmail.com> wrote:
>>
>> It took a while (10s?) before.
>> Now I get this immediately:
>>
>> evices: 1/1
>> Subdevice #0: subdevice #0
>> pi at cam-09:~ $ arecord -f cd -d 10 --device="hw:2,0" /tmp/test-mic.wav
>> Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian,
>> Rate 44100 Hz, Stereo
>> arecord: set_params:1407: Unable to install hw params:
>> ACCESS: RW_INTERLEAVED
>> FORMAT: S16_LE
>> SUBFORMAT: STD
>> SAMPLE_BITS: 16
>> FRAME_BITS: 32
>> CHANNELS: 2
>> RATE: 44100
>> PERIOD_TIME: (125011 125012)
>> PERIOD_SIZE: 5513
>> PERIOD_BYTES: 22052
>> PERIODS: 4
>> BUFFER_TIME: (500045 500046)
>> BUFFER_SIZE: 22052
>> BUFFER_BYTES: 88208
>> TICK_TIME: 0
>>
>> This most recent one (after a reboot that changed the card $)
>> laste the full 30 seconds and showed the mixer EQ at the bottom.
>> That was pegged at 99% the whole time.
>> I need to move the file to see if I can hear anything but it looks
>> like it died the same way.
>>
>> pi at cam-09:~ $ arecord --device="hw:2,0" -c2 -r 48000 -f S32_LE -t
>> wav -V stereo -d 30 -v file_stereo.wav
>> Recording WAVE 'file_stereo.wav' : Signed 32 bit Little Endian,
>> Rate 48000 Hz, Stereo
>> Hardware PCM card 2 'audioinjector-ultra' device 0 subdevice 0
>> Its setup is:
>> stream : CAPTURE
>> access : RW_INTERLEAVED
>> format : S32_LE
>> subformat : STD
>> channels : 2
>> rate : 48000
>> exact rate : 48000 (48000/1)
>> msbits : 32
>> buffer_size : 24000
>> period_size : 6000
>> period_time : 125000
>> tstamp_mode : NONE
>> tstamp_type : MONOTONIC
>> period_step : 1
>> avail_min : 6000
>> period_event : 0
>> start_threshold : 1
>> stop_threshold : 24000
>> silence_threshold: 0
>> silence_size : 0
>> boundary : 1572864000
>> appl_ptr : 0
>> hw_ptr : 0
>> +#################################
>> 99%|99%##################################+ arecord: pcm_read:2152:
>> read error: Input/output error
>>
>>
>>
>> On Tue, Jul 12, 2022 at 1:56 AM Matt Flax <matt at audioinjector.net>
>> wrote:
>>
>> It looks like it should work.
>>
>> The fact that ALSA/Linux finds the card and sets it up means
>> that you
>> have got I2C working.
>>
>> Perhaps there is a clocking I2S bus issue ? How long does it
>> take before
>> it reports the error ?
>>
>> Matt
>>
>> On 12/7/22 15:34, mark via People wrote:
>> > Excited to add audio to my Pi, and just finished assembling
>> the boards.
>> > I see the device listed with arecord -l.
>> > But, when I go to capture there is a read error. Any
>> suggestions on
>> > how to troubleshoot appreciated.
>> >
>> > pi at cam-09:~ $ sudo arecord -l
>> > **** List of CAPTURE Hardware Devices ****
>> > card 0: audioinjectorul [audioinjector-ultra], device 0:
>> > bcm2835-i2s-cs4265-dai1 cs4265-dai1-0 [bcm2835-i2s-cs4265-dai1
>> > cs4265-dai1-0]
>> > Subdevices: 1/1
>> > Subdevice #0: subdevice #0
>> > pi at cam-09:~ $ arecord --device="hw:0,0" -c2 -r 48000 -f
>> S32_LE -t wav
>> > -V stereo -d 30 -v file_stereo.wav
>> > Recording WAVE 'file_stereo.wav' : Signed 32 bit Little
>> Endian, Rate
>> > 48000 Hz, Stereo
>> > Hardware PCM card 0 'audioinjector-ultra' device 0 subdevice 0
>> > Its setup is:
>> > stream : CAPTURE
>> > access : RW_INTERLEAVED
>> > format : S32_LE
>> > subformat : STD
>> > channels : 2
>> > rate : 48000
>> > exact rate : 48000 (48000/1)
>> > msbits : 32
>> > buffer_size : 24000
>> > period_size : 6000
>> > period_time : 125000
>> > tstamp_mode : NONE
>> > tstamp_type : MONOTONIC
>> > period_step : 1
>> > avail_min : 6000
>> > period_event : 0
>> > start_threshold : 1
>> > stop_threshold : 24000
>> > silence_threshold: 0
>> > silence_size : 0
>> > boundary : 1572864000
>> > appl_ptr : 0
>> > hw_ptr : 0
>> > arecord: pcm_read:2152: read error: Input/output error
>> > pi at cam-09:~ $
>> >
>> >
>> >
>> --
>> Checkout the community email list :
>> https://lists.audioinjector.net/mailman/listinfo/people
>>
>>
> --
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> https://lists.audioinjector.net/mailman/listinfo/people
>
>
>
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