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107 lines
2.4 KiB
Markdown
107 lines
2.4 KiB
Markdown
Pianohat on the Raspberry Pi 3
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# Make sounds work
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In order to make the sounds work on the raspberry pi jack output you have to do following steps:
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- Add the sound module to the default modules
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$ echo "snd-bcm2835" | sudo tee -a /etc/modules
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- Run `raspi-config`
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- `7 Advanced Options`
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- `A4 Audio`
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- `1 Force 3,5mm (headphone) jack`
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## Install pulseaudio
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$ apt update
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$ apt install pulseaudio
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Create the systemd service:
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$ nano /lib/systemd/system/pulseaudio.service
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Insert folowing lines
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[Unit]
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Description=PulseAudio Sound System
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Before=sound.target
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[Service]
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Type=simple
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ExecStart=/usr/bin/pulseaudio --daemonize=no --system --realtime --log-target=journal
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[Install]
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WantedBy=session.target
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Configure pulseaudio for systemwide usage
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$ nano /etc/pulse/client.conf
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Add following configurations
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...
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default-server = /var/run/pulse/native
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autospawn = no
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Add all users to the pulseaudio groups
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$ nano /etc/group
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...
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pulse:x:114:nymea,root
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pulse-access:x:115:nymea,root
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Finally reboot the system
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# Test audio
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Make sure your master PCM volume is up. You can do that using
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$ alsamixer
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You shoudl see follwoing audio outputs:
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$ aplay -L
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default
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Playback/recording through the PulseAudio sound server
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null
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Discard all samples (playback) or generate zero samples (capture)
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sysdefault:CARD=ALSA
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bcm2835 ALSA, bcm2835 ALSA
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Default Audio Device
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dmix:CARD=ALSA,DEV=0
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bcm2835 ALSA, bcm2835 ALSA
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Direct sample mixing device
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dmix:CARD=ALSA,DEV=1
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bcm2835 ALSA, bcm2835 IEC958/HDMI
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Direct sample mixing device
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dsnoop:CARD=ALSA,DEV=0
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bcm2835 ALSA, bcm2835 ALSA
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Direct sample snooping device
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dsnoop:CARD=ALSA,DEV=1
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bcm2835 ALSA, bcm2835 IEC958/HDMI
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Direct sample snooping device
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hw:CARD=ALSA,DEV=0
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bcm2835 ALSA, bcm2835 ALSA
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Direct hardware device without any conversions
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hw:CARD=ALSA,DEV=1
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bcm2835 ALSA, bcm2835 IEC958/HDMI
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Direct hardware device without any conversions
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plughw:CARD=ALSA,DEV=0
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bcm2835 ALSA, bcm2835 ALSA
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Hardware device with all software conversions
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plughw:CARD=ALSA,DEV=1
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bcm2835 ALSA, bcm2835 IEC958/HDMI
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Hardware device with all software conversions
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Finally test if the jack connected speaker works:
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$ aplay /usr/share/sounds/alsa/Front_Center.wav
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