Digi + on raspberry pi 3

Stéphane Perennes

October 06, 2020 23:50

None

I have a problem since the drivers are missing. I did a package update, and i decided not to do the firmware update since i get a message about the boot partition being too small to hold raspberry pi4 files (i don t won t to make my Pi unbootable by throwing Pi4 firmware on its eprom).

Here is what i get :

modprobe: FATAL: Module snd_soc_bcm2708 not found in directory /lib/modules/5.4.51-v7+

modprobe: FATAL: Module snd_soc_hifiberry_digi not found in directory /lib/modules/5.4.51-v7+

uname -a

Linux raspberrypi 5.4.51-v7+ #1333 SMP Mon Aug 10 16:45:19 BST 2020 armv7l GNU/Linux
root@raspberrypi:/home/pi# cat /etc/modules
# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.

i2c-dev

#### added fir pi hat
snd_soc_bcm2708
bcm2708_dmaengine
snd_soc_hifiberry_digi
root@raspberrypi:/home/pi# modprobe snd_soc_bcm2708
snd_soc_bcm2708
modprobe: FATAL: Module snd_soc_bcm2708 not found in directory /lib/modules/5.4.51-v7+
root@raspberrypi:/home/pi# snd_soc_bcm2708
bash: snd_soc_bcm2708: command not found
root@raspberrypi:/home/pi# modprobe bcm2708_dmaengine
root@raspberrypi:/home/pi# modprobe snd_soc_hifiberry_digi
modprobe: FATAL: Module snd_soc_hifiberry_digi not found in directory /lib/modules/5.4.51-v7+
root@raspberrypi:/home/pi# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1]
Subdevices: 4/4
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
card 1: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
Subdevices: 4/4
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3

Date Votes

7 comments

1

David C. Snyder October 06, 2020 23:52

Stéphane Perennes - have a look here: https://www.hifiberry.com/docs/software/configuring-linux-3-18-x/

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1

Stéphane Perennes October 07, 2020 01:01

It seems that your suggested solution worked. At least it see the hat now.

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Stéphane Perennes October 07, 2020 01:19

Well it works but i m not able to plug the optical cable it is just the connector shape that is not nornalized or may be the box prevent me to plug mine without risking to break something.

So i looked for an spdif cable and with the spdif entry of my dac it works very well, the sound is nice i think.

I still have minor issues, i have to log as root to be able to use the sound card. If i do alsamixer with the usual user i get no soundcard.

It is probably some chmod missing somewhere.

Great thanks.

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Stéphane Perennes October 07, 2020 01:34

My god the sound is really good, i randomly picked new year day in falc from the 80 or 81 U2 album (back in the day when the did actual music) with my AKG k 702 and ouch it is a blast.

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Stéphane Perennes October 07, 2020 00:51

Oh thank btw i found modules but deeper in the modules directory, but not the good ones.

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0

Stéphane Perennes October 07, 2020 09:15

mpd would not work with the default sound card or with hw 0:0.

Indeed if i do alsamixer with the pi user i get an error, but aplay -l and aplay -L both work.

Next aplay -D works too if i use the long name of the device.

So i used the first device longname in mpd.conf and it worked.

pi@raspberrypi:~ $ alsamixer
cannot open mixer: Invalid argument
pi@raspberrypi:~ $ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
default
output
sysdefault:CARD=sndrpihifiberry
snd_rpi_hifiberry_digi, HifiBerry Digi HiFi wm8804-spdif-0
Default Audio Device
iec958:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_digi, HifiBerry Digi HiFi wm8804-spdif-0
IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_digi, HifiBerry Digi HiFi wm8804-spdif-0
Direct sample mixing device
dsnoop:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_digi, HifiBerry Digi HiFi wm8804-spdif-0
Direct sample snooping device
hw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_digi, HifiBerry Digi HiFi wm8804-spdif-0
Direct hardware device without any conversions
plughw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_digi, HifiBerry Digi HiFi wm8804-spdif-0
Hardware device with all software conversions
pi@raspberrypi:~ $ aplay -D sysdefault:CARD=sndrpihifiberry /media/pi/musique/Music/Inc/Yusef\ Lateef\ Eastern\ Sounds/05\ -\ Love\ Theme\ from\ \'Spartacus\pi@raspberrypi:~ $ aplay -D sysdefault:CARD=sndrpihifiberry /media/pi/musique/Music/Inc/Yusef\ Lateef\ Eastern\ Sounds/05\ -\ Love\ Theme\ from\ \'Spartacus\'.wav
Playing WAVE '/media/pi/musique/Music/Inc/Yusef Lateef Eastern Sounds/05 - Love Theme from 'Spartacus'.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
^CAborted by signal Interrupt...
pi@raspberrypi:~ $ grep -B 4 -A 4 berry /etc/mp
mpd.conf mpd.conf~ mplayer/
pi@raspberrypi:~ $ grep -B 4 -A 4 berry /etc/mpd.conf
audio_output {
type "alsa"
name "My Pi Hat"

device "sysdefault:CARD=sndrpihifiberry"
# optional device "hw:0"
mixer_type "software" # optional
# mixer_device "default" # optional
# mixer_control "PCM" # optional

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David C. Snyder October 07, 2020 16:17
Yes. You usually have to be the "root" user or use "sudo" to access devices like this. You are getting different error messages than me when trying to run these commands as an unprivileged user, but the results are the same, I suppose. Here's what I see:
```
$ alsamixer
cannot open mixer: Permission denied


$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
```
But, if I use sudo, these commands work as expected.
```
$ sudo aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=sndrpihifiberry
snd_rpi_hifiberry_dacplus, HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0
Default Audio Device
dmix:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus, HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0
Direct sample mixing device
dsnoop:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus, HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0
Direct sample snooping device
hw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus, HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0
Direct hardware device without any conversions
plughw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus, HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0
Hardware device with all software conversions
```
Anyway, while you can play music files from the command-line using "aplay" or the SoX "play" command, that's not the most enjoyable user experience for audio endpoints based on the Raspberry Pi and HiFiBerry products. I'd suggest running HiFiBerryOS on the Raspberry Pi and then stream music to the device using Roon. If a Roon subscription is not in the budget, a nice DLNA app like BubbleUPnP or JRiver can work well. These solutions enable you to control music playback from a tablet or smartphone app rather than the Linux command-line.
Edited by David C. Snyder October 07, 2020 16:18

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