First release

README.md

@@ -1,2 +1,19 @@
-# orange-pi-fan-controller
-Fan controller for Orange Pi using GPIO
+# Orange Pi Fan Controller
+
+Orange Pi fan controller.
+
+## Description
+
+This repository provides scripts that can be run on the Orange Pi that will
+monitor the core temperature and start the fan when the temperature reaches
+a certain threshold.
+
+To use this code, you'll have to install a fan.
+
+The instructions for do that you can be found on this guide for RPi: [Control Your Raspberry Pi Fan (and Temperature) with Python](https://howchoo.com/g/ote2mjkzzta/control-raspberry-pi-fan-temperature-python).
+
+**<u>THIS SCRIPT IS SET TO CONTROL FAN WITH PIN 9 (Tested on board: Orange Pi 3 LTS)</u>**
+
+## Requirements
+
+**This script require [wiringOP](https://github.com/orangepi-xunlong/wiringOP) install on OS.**

fancontrol.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import time
+
+ON_THRESHOLD = 60  #(°C) Fan kicks on at this temperature.
+OFF_THRESHOLD = 50  #(°C) Fan shuts off at this temperature.
+SLEEP_INTERVAL = 5  #[seconds] How often we check the core temperature.
+
+# GPIO PIN is 9 using to control the fan. [Physical PIN 16 on board]
+
+def get_temp():
+    """Get the core temperature.
+
+    Read file from /sys to get CPU temp in temp in C *1000
+
+    Returns:
+        int: The core temperature in thousanths of degrees Celsius.
+    """
+    with open('/sys/class/thermal/thermal_zone0/temp') as f:
+        temp_str = f.read()
+
+    try:
+        return int(temp_str) / 1000
+    except (IndexError, ValueError,) as e:
+        raise RuntimeError('Could not parse temperature output.') from e
+
+if __name__ == '__main__':
+    # Validate the on and off thresholds
+    if OFF_THRESHOLD >= ON_THRESHOLD:
+        raise RuntimeError('OFF_THRESHOLD must be less than ON_THRESHOLD')
+
+    os.system('gpio mode 9 out')
+    os.system('gpio write 9 0')
+
+
+    while True:
+        fan = os.system('gpio read 9')
+        temp = get_temp()
+        print(temp)
+
+        # Start the fan if the temperature has reached the limit and the fan
+        # isn't already running.
+        # NOTE: `fan` returns 1 for "on" and 0 for "off"
+        if temp > ON_THRESHOLD and fan==0:
+            os.system('gpio write 9 1')
+        # Stop the fan if the fan is running and the temperature has dropped
+        # to 10 degrees below the limit.
+        if temp <= OFF_THRESHOLD:
+            os.system('gpio write 9 0')
+
+        time.sleep(SLEEP_INTERVAL)

fancontrol.sh

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+#! /bin/sh
+
+### BEGIN INIT INFO
+# Provides:          fancontrol.py
+# Required-Start:    $remote_fs $syslog
+# Required-Stop:     $remote_fs $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+### END INIT INFO
+
+# Carry out specific functions when asked to by the system
+case "$1" in
+  start)
+    echo "Starting fancontrol.py"
+    /usr/local/bin/fancontrol.py &
+    ;;
+  stop)
+    echo "Stopping fancontrol.py"
+    pkill -f /usr/local/bin/fancontrol.py
+    ;;
+  *)
+    echo "Usage: /etc/init.d/fancontrol.sh {start|stop}"
+    exit 1
+    ;;
+esac
+
+exit 0

script/install

@@ -0,0 +1,18 @@
+#! /bin/sh
+
+set -e
+
+cd "$(dirname "$0")/.."
+
+echo "=> Installing fan controller...\n"
+sudo cp fancontrol.py /usr/local/bin/
+sudo chmod +x /usr/local/bin/fancontrol.py
+
+echo "=> Starting fan controller...\n"
+sudo cp fancontrol.sh /etc/init.d/
+sudo chmod +x /etc/init.d/fancontrol.sh
+
+sudo update-rc.d fancontrol.sh defaults
+sudo /etc/init.d/fancontrol.sh start
+
+echo "Fan controller installed."