logging facility (log.c librarie), template, minor bug fixes, param init

RpiLedBars/res/install_i2s_mems_mic

@@ -1,6 +1,7 @@
 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
@@ -15,4 +16,14 @@ arecord -D plughw:1 -c1 -r 48000 -f S32_LE -t wav -V mono -v file.wav
 cp res/.asoundrc ~/.asoundrc
 
 # alsa API
-http://www.equalarea.com/paul/alsa-audio.html
+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