Orange Pi Zero examples
============ INSTALL ALSA LIB ===================
install alsa: sudo apt-get install libasound2-dev
sudo apt-get install libasound-dev => test ok on default xenial
install c lib: sudo apt-get install libc6-dev
============ TEST ALSA LIB ===================
play wav file: sudo aplay ChillingMusic.wav
test MIC: arecord -d 5 test-mic.wav
aplay test-mic.wav
UART
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show uart com: dmesg|grep -u tty
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/dev/ttyS1: pin 8 (Tx) & pin 10 (Rx)
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/dev/ttyS2: pin 11 (Rx) & pin 13 (Tx)