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RpiLedBars/README.md
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RpiLedBars
---
# RpiLedBars
LedBars version for raspberry pi
contains :
## Contains
* a python test program (main.py)
* a C program using :
* ws2812 with dma/smi from Jeremy P Bentham - https://iosoft.blog/category/neopixel/
* artnet from Stephan Ruloff - https://github.com/rstephan/ArtnetnodeWifi
biblio:
* Art-Net
## Install
### I2S Microphone
#### Install dependencies
~~~bash
sudo apt install python3-pip
sudo pip3 install --upgrade adafruit-python-shell
~~~
#### Build and install module
~~~bash
cd /tmp
sudo wget https://raw.githubusercontent.com/adafruit/Raspberry-Pi-Installer-Scripts/master/i2smic.py
sudo python3 i2smic.py
~~~
After a kernel update this step as to be executed again (after reboot -> depends on `uname`)
#### Test microphone
Plug the microphone
~~~bash
sudo reboot
arecord -l
arecord -D plughw:1 -c1 -r 48000 -f S32_LE -t wav -V mono -v file.wav
~~~
#### Control record volume
~~~bash
cp res/.asoundrc ~/.asoundrc
~~~
* Intall i2s mems microphone - https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/raspberry-pi-wiring-test
* Configuring alsa - https://makersportal.com/blog/recording-stereo-audio-on-a-raspberry-pi
* Alsa API - http://www.equalarea.com/paul/alsa-audio.html
### Project depenencies
~~~bash
sudo apt install libasound2-dev wiringpi
~~~
#### Cava
~~~bash
sudo apt install libfftw3-dev libasound2-dev libtool automake
cd cava
./autogen.sh
./configure
make
sudo make install
~~~
### Access point
~~~bash
grep "Access point conf" $(find /etc -type f)
~~~
## Biblio:
### Art-Net
* Protocol Spec :
* https://art-net.org.uk/how-it-works/
* https://artisticlicence.com/WebSiteMaster/User%20Guides/art-net.pdf
* ESP32 library from Stephan Ruloff - https://github.com/rstephan/ArtnetnodeWifi
* ws28** rgb leds
### ws28xx rgb leds
* ws2812 datasheet - https://cdn-shop.adafruit.com/datasheets/WS2812.pdf
* ws2815 datasheet - https://pdf1.alldatasheet.com/datasheet-pdf/view/1134588/WORLDSEMI/WS2815B.html
* ws2812 with dma/smi from Jeremy P Bentham :
* ws2812 - https://iosoft.blog/2020/09/29/raspberry-pi-multi-channel-ws2812/
* dma - https://iosoft.blog/2020/05/25/raspberry-pi-dma-programming/
* smi - https://iosoft.blog/2020/07/16/raspberry-pi-smi/
Raspi Config :
https://makersportal.com/blog/recording-stereo-audio-on-a-raspberry-pi
https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/raspberry-pi-wiring-test
sudo apt install python3-pip
sudo pip3 install --upgrade adafruit-python-shell
cd /tmp
sudo wget https://raw.githubusercontent.com/adafruit/Raspberry-Pi-Installer-Scripts/master/i2smic.py
sudo python3 i2smic.py
# plug microphone
sudo reboot
arecord -l
arecord -D plughw:1 -c1 -r 48000 -f S32_LE -t wav -V mono -v file.wav
# Control record volume
cp res/.asoundrc ~/.asoundrc
# alsa API
http://www.equalarea.com/paul/alsa-audio.html
# for project
sudo apt install libasound2-dev wiringpi
# for cava
sudo apt install libfftw3-dev libasound2-dev libtool automake
./autogen.sh
./configure
make
sudo make install
# Access point
grep "Access point conf" $(find /etc -type f)