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74 lines
2.4 KiB
74 lines
2.4 KiB
try:
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from adafruit_shell import Shell
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except ImportError:
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raise RuntimeError("The library 'adafruit_shell' was not found. To install, try typing: sudo pip3 install adafruit-python-shell")
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shell = Shell()
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shell.group = 'ADAFRUIT'
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def main():
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shell.clear()
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print("""This script will install Adafruit
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fan service, which will turn on an
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external fan controlled by a given pin
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Operations performed include:
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- In /boot/config.txt, enable camera
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- apt-get update
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- Install Python libraries:
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picamera, pygame, PIL
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- Downgrade SDL library for pygame
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touch compatibility
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- Download Dropbox Updater and
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Adafruit Pi Cam software
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Run time 1+ minutes. Reboot not required.
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""")
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if not shell.argument_exists('y'):
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if not shell.prompt("CONTINUE?", default='n'):
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print("Canceled.")
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shell.exit()
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print("Continuing...")
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# check init system (technique borrowed from raspi-config):
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shell.group = 'FAN'
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shell.info('Checking init system...')
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if shell.run_command("which systemctl", True) and shell.run_command("systemctl | grep '\-\.mount'", True):
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print("Found systemd, OK!")
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elif os.path.isfile("/etc/init.d/cron") and not os.path.islink("/etc/init.d/cron"):
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shell.bail("Found sysvinit, but we require systemd")
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else:
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shell.bail("Unrecognised init system")
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shell.info('Adding adafruit_fan.service')
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contents = """[Unit]
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Description=Fan service for some Adafruit boards
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After=network.target
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[Service]
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Type=oneshot
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ExecStartPre=-/bin/bash -c 'echo 4 >/sys/class/gpio/export'
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ExecStartPre=/bin/bash -c 'echo out >/sys/class/gpio/gpio4/direction'
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ExecStart=/bin/bash -c 'echo 1 >/sys/class/gpio/gpio4/value'
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RemainAfterExit=true
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ExecStop=/bin/bash -c 'echo 0 >/sys/class/gpio/gpio4/value'
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StandardOutput=journal
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[Install]
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WantedBy=multi-user.target"""
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shell.write_text_file("/etc/systemd/system/adafruit_fan.service", contents, append=False)
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shell.info('Enabling adafruit_fan.service')
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shell.run_command("sudo systemctl enable adafruit_fan.service")
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shell.run_command("sudo systemctl start adafruit_fan.service")
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shell.info('Done!')
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print("You can stop the fan service with 'sudo systemctl stop adafruit_fan.service'")
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print("You can start the fan service with 'sudo systemctl start adafruit_fan.service'")
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# Main function
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if __name__ == "__main__":
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shell.require_root()
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main()
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