86 lines
2.1 KiB
Markdown
86 lines
2.1 KiB
Markdown
# RpiLedBars
|
|
|
|
LedBars version for raspberry pi
|
|
|
|
## 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
|
|
|
|
## 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
|
|
|
|
### 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/
|