Adding Python script, Dockerfile, site files, and some Git meta

klaxon_flask.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+from flask import Flask, render_template, request
+from paste.translogger import TransLogger
+import RPi.GPIO as GPIO
+from waitress import serve
+
+
+RELAIS_1_GPIO = 17
+app = Flask(__name__)
+
+
+def setup():
+    print('Running setup')
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(RELAIS_1_GPIO, GPIO.OUT)
+    GPIO.output(RELAIS_1_GPIO, GPIO.HIGH)  # Defaulting to high/off
+    print('GPIO setup, pin set to off')
+
+
+@app.route('/')
+def home():
+    return render_template('index.html')
+
+
+@app.route('/start')
+def starthorn():
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(RELAIS_1_GPIO, GPIO.OUT)
+    GPIO.output(RELAIS_1_GPIO, GPIO.LOW)   # Toggle switch to low/on
+    return('Sending power to the relay switch, hopefully toggling a horn...')
+
+
+@app.route('/stop')
+def stophorn():
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(RELAIS_1_GPIO, GPIO.OUT)
+    GPIO.output(RELAIS_1_GPIO, GPIO.HIGH)  # Toggle switch to high/off
+    GPIO.cleanup()
+    return('Ceasing power to the relay switch, hopefully silencing a horn...')
+
+
+def destroy():
+    return('Cleaning up GPIO')
+    GPIO.cleanup()
+
+
+if __name__ == '__main__':     # Program entrance
+    try:
+        setup()
+        serve(TransLogger(app, setup_console_handler=False), listen='*:5000')
+    finally:
+        destroy()