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raspberry_boards:raspi-sound-hat [2020/03/05 01:24] admin |
raspberry_boards:raspi-sound-hat [2020/09/01 19:25] (current) admin [Alsa Mixer Settings] |
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| * 1x 12 MHz | * 1x 12 MHz | ||
| * **Semiconductors** | * **Semiconductors** | ||
| - | * 1x LD117 (3V3) | + | * 1x LD1117V33 (3V3 version!) |
| * 1x WM8731 | * 1x WM8731 | ||
| * **Mechanical:** | * **Mechanical:** | ||
| Line 55: | Line 55: | ||
| ==== Installation === | ==== Installation === | ||
| - | After connecting the Audio Injector to the Raspberry Pi change some configurations, in: | + | After connecting the Audio Injector to the Raspberry Pi some software should be installed.\\ |
| + | First you have to download the deb package from [[http://forum.audioinjector.net/viewtopic.php?f=5&t=3]]. | ||
| + | $ wget https://github.com/Audio-Injector/stereo-and-zero/archive/master.zip | ||
| + | Unpack it: | ||
| + | $ unzip master.zip | ||
| + | And install it: | ||
| + | $ cd stereo-and-zero-master/ | ||
| + | $ sudo apt install ./audio.injector.scripts_0.1-1_all.deb | ||
| + | Change some configurations, in: | ||
| $ sudo nano /boot/config.txt | $ sudo nano /boot/config.txt | ||
| - | Comment out: | + | Put in comment: |
| # dtparam=audio=on | # dtparam=audio=on | ||
| And type in: | And type in: | ||
| + | # Enable audio (WM8731) | ||
| dtoverlay=audioinjector-wm8731-audio | dtoverlay=audioinjector-wm8731-audio | ||
| ctl + o for saving, press return and ctl + x to leave.\\ | ctl + o for saving, press return and ctl + x to leave.\\ | ||
| Line 68: | Line 77: | ||
| ==== Alsa Mixer Settings ==== | ==== Alsa Mixer Settings ==== | ||
| - | [[https://github.com/Audio-Injector/stereo-and-zero]]\\ | + | To enable the audio output: |
| - | There are two reference alsa mixer files which will allow you to setup default output with either line input or microphone input : | + | $ amixer set 'Output Mixer HiFi' on |
| - | Download: | + | Go into the folder: |
| - | $ wget https://github.com/Audio-Injector/stereo-and-zero/archive/master.zip | + | $ cd stereo-and-zero-master/audio.injector.scripts-0.1/ |
| - | Unpack it: | + | To setup the output run the following command: |
| - | $ unzip master.zip | + | In combination with the microphone input: |
| - | go into the folder: | + | |
| - | $ cd stereo-and-zero-master/ | + | |
| - | and run: | + | |
| $ alsactl --file asound.state.MIC.thru.test restore | $ alsactl --file asound.state.MIC.thru.test restore | ||
| + | or in combination with the lines input: | ||
| $ alsactl --file asound.state.RCA.thru.test restore | $ alsactl --file asound.state.RCA.thru.test restore | ||
| + | to check the alsa setting: | ||
| + | $ alsamixer | ||
| ---- | ---- | ||
| Line 159: | Line 168: | ||
| [[https://github.com/Audio-Injector/stereo-and-zero]]\\ | [[https://github.com/Audio-Injector/stereo-and-zero]]\\ | ||
| [[https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp/raspberry-pi-usage]]\\ | [[https://learn.adafruit.com/adafruit-max98357-i2s-class-d-mono-amp/raspberry-pi-usage]]\\ | ||
| + | [[https://alsa-project.org/wiki/Main_Page]]\\ | ||
| ---- | ---- | ||