An installation script that sets up GPIO functionality for the Banana Pi M2 Zero. It installs prerequired packages, necessary system files, a Banana Pi M2 Zero compatible port of WiringPi and a Banana Pi M2 Zero compatible port of RPi.GPIO.

bpi-m2z-gpio-setup.sh

#!/usr/bin/env bash

#
# Copyright (C) 2023 Patrick Pedersen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
# 

# To run, execute:
# $ chmod +x bpi-m2z-gpio-setup.sh
# $ sudo ./bpi-m2z-gpio-setup.sh

# Developed for- and tested on: Armbian (22.11.0-trunk)

clean_up() {
	echo "Cleaning up..."
	rm -rf /tmp/bpi-m2z-system-files
	rm -rf /tmp/BPI-WiringPi2
	rm -rf /tmp/RPi.GPIO
}

# Check if we are root
if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit 1
fi

# Check if hardware is bpi-m2z
if [ ! -f /sys/firmware/devicetree/base/model ]; then
	echo "This script is only for the BPI-M2Z"
	exit 1
fi

#--------------------------------------------
# Install prerequired packages
#--------------------------------------------

echo "Installing prerequired packages..."

apt install -y build-essential git python3-dev

if [ $? -ne 0 ]; then
	echo "Failed to install prerequired packages"
	exit 1
fi

echo "Prerequired packages successfully installed"

#--------------------------------------------
# Install required system files
#--------------------------------------------

echo "Installing required system files..."

cd /tmp
git clone https://github.com/CTXz/bpi-m2z-system-files.git

if [ $? -ne 0 ]; then
	echo "Failed to clone bpi-m2z-system-files"
	exit 1
fi

cd bpi-m2z-system-files
chmod +x install.sh
./install.sh

if [ $? -ne 0 ]; then
	echo "Failed to install required system files"
	clean_up
	exit 1
fi

#--------------------------------------------
# Build and install BPI-WiringPi2
#
# Special thanks to bontango for the fixed
# up fork!
#--------------------------------------------

echo "Building and installing BPI-WiringPi2..."

cd /tmp
git clone https://github.com/bontango/BPI-WiringPi2

if [ $? -ne 0 ]; then
	echo "Failed to clone BPI-WiringPi2"
	clean_up
	exit 1
fi

cd BPI-WiringPi2
chmod +x build
./build

if [ $? -ne 0 ]; then
	echo "Failed to build BPI-WiringPi2"
	clean_up
	exit 1
fi

# Patch readall table
curl https://raw.githubusercontent.com/TuryRx/Bananapi-m2-zero-GPIO-files/master/gpioread.sh > /usr/local/bin/gpioread

if [ $? -ne 0 ]; then
	echo "Failed to patch readall table"
	clean_up
	exit 1
fi

chmod o+x /usr/local/bin/gpioread
chmod 777 /usr/local/bin/gpioread
touch /var/lib/bananapi/gpio
chmod o+x /var/lib/bananapi/gpio
chmod 777 /var/lib/bananapi/gpio

# Test if gpio command is available and working
gpio -v

if [ $? -ne 0 ]; then
	echo "Failed to install BPI-WiringPi2"
	clean_up
	exit 1
fi

echo "BPI-WiringPi2 successfully built and installed"

#--------------------------------------------
# Build and install RPi.GPIO
#
# Special thanks to the Grazer Computer Club
# for the fixed up fork!
#--------------------------------------------

echo "Building and installing BPI port of RPi.GPIO..."

cd /tmp
git clone https://github.com/GrazerComputerClub/RPi.GPIO.git

if [ $? -ne 0 ]; then
	echo "Failed to clone RPi.GPIO"
	clean_up
	exit 1
fi

cd RPi.GPIO
CFLAGS="-fcommon" python3 setup.py install

if [ $? -ne 0 ]; then
	echo "Failed to build RPi.GPIO"
	clean_up
	exit 1
fi

echo "BPI port of RPi.GPIO successfully built and installed"

#--------------------------------------------

clean_up

echo "GPIO setup successfully completed!"