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@@ -2,4 +2,23 @@
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Documentation and apps for the OrangePi-i96 board. Fixes the GPIO access, and includes notes to help make the board more useable.
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-See the [wiki](http://alt.pbeirne.com:3000/patb/i96/wiki) for the documentation.
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+See the [wiki](http://alt.pbeirne.com:3000/patb/i96/wiki) for the documentation.
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+
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+Download the `gpio_fixup.py` file onto your OrangePi-i96. I usually install it into `/usr/local/bin'.
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+
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+```
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+sudo -i # change to root
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+cd /usr/local/bin
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+wget http://wiki.pbeirne.com/patb/i96/raw/master/gpio_fixup.py
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+
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+# add a line to /etc/rc.local to execute this at startup
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+sed -i "/^exit 0$/i\/usr/local/bin/gpio_fixup.py" /etc/rc.local
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+```
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+
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+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**
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+
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+`gpio_fixup.sh` is the equivalent script written in bash, using `devmem2` to access the cpu registers.
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+
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+`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.
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+
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+`blink.py` is just an example to show how you might play with the GPIO lines.
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