i96/README.md

i96

Documentation and apps for the OrangePi-i96 board. Fixes the GPIO access, and includes notes to help make the board more useable.

See the wiki for the documentation.

Download the gpio_fixup.py file onto your OrangePi-i96. I usually install it into `/usr/local/bin'.

sudo -i                  # change to root
cd /usr/local/bin
wget http://wiki.pbeirne.com/patb/i96/raw/master/gpio_fixup.py

# add a line to /etc/rc.local to execute this at startup
sed -i "/^exit 0$/i\/usr/local/bin/gpio_fixup.py" /etc/rc.local

That little script will run at boot time, and change the gpio pins on the 40 pin connector (pins 23-34) into true GPIO pins, and it'll restore proper operation of the UART2 and SPI2 pins (pins 3,9,8,10,12,14) NOTE: this is OrangePi-i96 specific; do not use on the 2G-iot board

gpio_fixup.sh is the equivalent script written in bash, using devmem2 to access the cpu registers.

devmem2.py is a local version of the program to access the cpu registers. Use if you can't download devmem2 from the Debian/Ubuntu repositories. devmem2.py uses Python3 and is very slow, and must be run by root or sudo.

blink.py is just an example to show how you might play with the GPIO lines.