I installed the HifiBerry driver as specified. The Board is recognized and the audio output works fine. Just the audio input seems to be not working. I checked if the microphone is muted but I can't recognize any bad setting. Here is the output of the amixer command:
Simple mixer control 'DSP Program',0 Capabilities: enum Items: 'FIR interpolation with de-emphasis' 'Low latency IIR with de- emphasis' 'High attenuation with de-emphasis' 'Fixed process flow' 'Ringing-less low latency FIR' Item0: 'FIR interpolation with de-emphasis' Simple mixer control 'Analogue',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 1 Mono: Front Left: Playback 1 [100%] [0.00dB] Front Right: Playback 1 [100%] [0.00dB] Simple mixer control 'Analogue Playback Boost',0 Capabilities: volume Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: 0 - 1 Front Left: 1 [100%] [0.80dB] Front Right: 1 [100%] [0.80dB] Simple mixer control 'Auto Mute',0 Capabilities: pswitch Playback channels: Front Left - Front Right Mono: Front Left: Playback [off] Front Right: Playback [off] Simple mixer control 'Auto Mute Mono',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'Auto Mute Time Left',0 Capabilities: enum Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s' Item0: '21ms' Simple mixer control 'Auto Mute Time Right',0 Capabilities: enum Items: '21ms' '106ms' '213ms' '533ms' '1.07s' '2.13s' '5.33s' '10.66s' Item0: '213ms' Simple mixer control 'Clock Missing Period',0 Capabilities: enum Items: '1s' '2s' '3s' '4s' '5s' '6s' '7s' '8s' Item0: '1s' Simple mixer control 'Deemphasis',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Digital',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 207 Mono: Front Left: Playback 207 [100%] [0.00dB] [on] Front Right: Playback 207 [100%] [0.00dB] [on] Simple mixer control 'Max Overclock DAC',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 40 Mono: 40 [100%] Simple mixer control 'Max Overclock DSP',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 40 Mono: 40 [100%] Simple mixer control 'Max Overclock PLL',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 20 Mono: 20 [100%] Simple mixer control 'Volume Ramp Down Emergency Rate',0 Capabilities: enum Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate' Item0: 'Immediate' Simple mixer control 'Volume Ramp Down Emergency Step',0 Capabilities: enum Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step' Item0: '0.5dB/step' Simple mixer control 'Volume Ramp Down Rate',0 Capabilities: enum Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate' Item0: 'Immediate' Simple mixer control 'Volume Ramp Down Step',0 Capabilities: enum Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step' Item0: '0.5dB/step' Simple mixer control 'Volume Ramp Up Rate',0 Capabilities: enum Items: '1 sample/update' '2 samples/update' '4 samples/update' 'Immediate' Item0: '4 samples/update' Simple mixer control 'Volume Ramp Up Step',0 Capabilities: enum Items: '4dB/step' '2dB/step' '1dB/step' '0.5dB/step' Item0: '0.5dB/step'
This is the arecord -l output:
**** List of CAPTURE Hardware Devices ****
card 1: sndrpihifiberry [snd_rpi_hifiberry_dacplusadc], device 0: HiFiBerry DAC+ADC HiFi multicodec-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
This is the command that I run for recording the audio:
arecord -vv -d 10 -f cd -t wav -D hw:1,0 foobar.wav
With the following output:
Recording WAVE 'foobar.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
Hardware PCM card 1 'snd_rpi_hifiberry_dacplusadc' device 0 subdevice 0
Its setup is:
stream : CAPTURE
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 44100
exact rate : 44100 (44100/1)
msbits : 16
buffer_size : 22052
period_size : 5513
period_time : 125011
tstamp_mode : NONE
tstamp_type : MONOTONIC
period_step : 1
avail_min : 5513
period_event : 0
start_threshold : 1
stop_threshold : 22052
silence_threshold: 0
silence_size : 0
boundary : 1445199872
appl_ptr : 0
hw_ptr : 0
#+ | 00%
The LED recording lamp on the Hiffyberry is continuously red but the sound level is shown to be zero.
I can't find the reason why no input can be recorded..