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raspberry_boards:raspi-sound-hat [2020/03/05 00:15] admin [I2S and I2C Pins] |
raspberry_boards:raspi-sound-hat [2020/09/01 19:25] (current) admin [Alsa Mixer Settings] |
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- | ===== Raspi-Sound-Hat ===== | + | ===== Raspi-Sonic-Hat ===== |
- | The Raspi-Sound Hat is a sound card for the [[https://www.raspberrypi.org/|Raspberry Pi]]. It is based on the [[https://www.cirrus.com/products/wm8731/|WM8731]] I2S sound chip by Cirrus Logic (former Wolfson). The board design is a hybrid of the [[https://statics.cirrus.com/pubs/proDatasheet/WM8731_v4.9.pdf|WM8731 datasheet]], the [[https://www.mikroe.com/audio-codec-proto-board|Audio Codec Board - PROTO]] and the [[http://www.audioinjector.net/rpi-hat|Audio Injector]]. That is why one can use the [[https://github.com/Audio-Injector/stereo-and-zero|Audio Injector software]].\\ | + | {{:raspberry_boards:raspi-sonic-hat.jpg?600|}}\\ |
+ | |||
+ | The Raspi-Sonic-Hat is a sound card for the [[https://www.raspberrypi.org/|Raspberry Pi]]. It is based on the [[https://www.cirrus.com/products/wm8731/|WM8731]] I2S sound chip by Cirrus Logic (former Wolfson). The board design is a hybrid of the [[https://statics.cirrus.com/pubs/proDatasheet/WM8731_v4.9.pdf|WM8731 datasheet]], the [[https://www.mikroe.com/audio-codec-proto-board|Audio Codec Board - PROTO]] and the [[http://www.audioinjector.net/rpi-hat|Audio Injector]]. That is why one can use the [[https://github.com/Audio-Injector/stereo-and-zero|Audio Injector software]].\\ | ||
This sound card features two line inputs and two line outputs.\\ | This sound card features two line inputs and two line outputs.\\ | ||
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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:** | ||
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==== 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.\\ | ||
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==== 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 | ||
---- | ---- | ||
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---- | ---- | ||
- | ==== Install the Shutdown Button and the Run LED ==== | + | ==== Install the Shutdown Button and the LED ==== |
+ | |||
+ | Download the Python script: | ||
+ | $ wget www.dernulleffekt.de/programme/scripts.tar.xz | ||
+ | And unpack it: | ||
+ | $ tar -xf scripts.tar.xz | ||
+ | Go to in the script folder | ||
+ | $ cd /home/pi/scripts | ||
+ | Change owner & rights | ||
+ | $ sudo chown root:root shutdownbutton.py blink.py | ||
+ | $ sudo chmod 755 shutdownbutton.py blink.py | ||
+ | Create the autostart: | ||
+ | $ sudo nano /etc/rc.local | ||
+ | Write before "exit 0": | ||
+ | |||
+ | # run reset and shutdown script and the blink script | ||
+ | printf ">>>>>>>> Starting shutdown aund reset button on GPIO 27 and a blinking LED on GPIO 04" | ||
+ | /home/pi/scripts/shutdownbutton.py & | ||
+ | /home/pi/scripts/blink.py & | ||
- | For the Shutdown Button and Run LED installation follow the manual of the [[https://paperpcb.dernulleffekt.de/doku.php?id=raspberry_boards:raspberry_basic_hat|Raspberry Basic Hat]].\\ | + | To save and leave press: CTRL+O, Enter, CTRL+X\\ |
- | In the two scripts change the pins for the shutdown button to GPIO 27 and the blink LED to GPIO 04.\\ | + | Reboot: |
+ | $ sudo reboot | ||
---- | ---- | ||
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[[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]]\\ | ||
---- | ---- | ||
==== License ==== | ==== License ==== | ||
- | The Raspi-Sound Hat was designed by **Wolfgang Spahn** 2020.\\ | + | The Raspi-Sonic-Hat was designed by **Wolfgang Spahn** 2020.\\ |
It is licensed under a [[http://creativecommons.org/licenses/by-nc-sa/4.0/"|Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License]]. | It is licensed under a [[http://creativecommons.org/licenses/by-nc-sa/4.0/"|Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License]]. | ||