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jQuery Mobile Fan Control for RPi
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| import RPi.GPIO as GPIO | |
| import time | |
| import random | |
| import signal | |
| from multiprocessing import Pool | |
| from paste import httpserver | |
| import paste.request | |
| import threading | |
| import pywapi | |
| fans = [] | |
| GPIO.setmode(GPIO.BOARD) | |
| GPIO.setwarnings(False) | |
| current_weather = {} | |
| speed = 50 | |
| page = '''<!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Fan Control</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=3"> | |
| <link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.4/jquery.mobile-1.4.4.min.css" /> | |
| <script src="https://code.jquery.com/jquery-1.11.1.min.js"></script> | |
| <script src="https://code.jquery.com/mobile/1.4.4/jquery.mobile-1.4.4.min.js"></script> | |
| <script> | |
| function handle(dat){{ | |
| location.reload(); | |
| }} | |
| </script> | |
| <style> | |
| .ui-block-a, .ui-block-b, .ui-block-c {{ | |
| vertical-align: middle; | |
| text-align: center; | |
| }} | |
| </style> | |
| </head> | |
| <body> | |
| <div data-role="page"> | |
| <div data-role="header"> | |
| <h1>Fan Control</h1> | |
| </div><!-- /header --> | |
| <div role="main" class="ui-content"> | |
| <div class="ui-grid-c"> | |
| <div class="ui-block-a"><div class="ui-bar ui-bar-a" style="height:60px"><h3></h3></div></div> | |
| <div class="ui-block-b"><div class="ui-bar ui-bar-a" style="height:60px"><h3>Status</h3></div></div> | |
| <div class="ui-block-c"><div class="ui-bar ui-bar-a" style="height:60px"><h3>Temp.</h3></div></div> | |
| <div class="ui-block-d"><div class="ui-bar ui-bar-a" style="height:60px"><h3>Speed</h3></div></div> | |
| <div class="ui-block-a"><div class="ui-bar ui-bar-a" style="height:60px"><img src="{icon}"/></div></div> | |
| <div class="ui-block-b"><div class="ui-bar ui-bar-a" style="height:60px">{status}</div></div> | |
| <div class="ui-block-c"><div class="ui-bar ui-bar-a" style="height:60px">{temp}</div></div> | |
| <div class="ui-block-d"><div class="ui-bar ui-bar-a" style="height:60px">{speed}%</div></div> | |
| </div><!-- /grid-c --> | |
| <input type="button" value="High" onclick="$.post( '#' , {{speed: 100}}, handle);"> | |
| <input type="button" value="Med" onclick="$.post( '#' , {{speed: 70}}, handle);"> | |
| <input type="button" value="Low" onclick="$.post( '#' , {{speed: 40}}, handle);"> | |
| <input type="button" value="Breeze" onclick="$.post( '#' , {{speed: 10}}, handle);"> | |
| <input type="button" value="Off" onclick="$.post( '#' , {{speed: 0}}, handle);"> | |
| </div><!-- /content --> | |
| <div data-role="footer"> | |
| <h4></h4> | |
| </div><!-- /footer --> | |
| </div><!-- /page --> | |
| </body> | |
| </html> | |
| ''' | |
| def init_worker(): | |
| signal.signal(signal.SIGINT, signal.SIG_IGN) | |
| def rule_set(temp): | |
| ret = 0 | |
| if temp > 50 and temp <= 55: | |
| ret = 20 | |
| elif temp > 55 and temp <= 60: | |
| ret = 50 | |
| elif temp > 60 and temp <= 70: | |
| ret = 100 | |
| elif temp > 70 and temp <= 75: | |
| ret = 50 | |
| elif temp > 75 and temp <= 80: | |
| ret = 20 | |
| hr = time.localtime()[3] | |
| if hr < 7 or hr >= 11: | |
| ret /=2 | |
| return ret | |
| def weather_callback(weather): | |
| global fans | |
| global current_weather | |
| current_weather = weather | |
| print "Currently", weather['temperature_string'] | |
| print weather['weather'] | |
| return | |
| def setup_fans(fan_list = [3,5], frq = 50): | |
| fs = [] | |
| for f in fan_list: | |
| GPIO.setup(f, GPIO.OUT) | |
| fs += [GPIO.PWM(f, frq)] | |
| return fs | |
| def app(environ, start_response): | |
| global current_weather | |
| global speed | |
| fields = paste.request.parse_formvars(environ) | |
| start_response('200 OK', [('content-type', 'text/html')]) | |
| if environ['REQUEST_METHOD'] == 'POST': | |
| try: | |
| speed = int(fields['speed']) | |
| print "Speed set to", speed | |
| return [] | |
| except: | |
| pass | |
| return [page.format(status = current_weather['weather'], | |
| temp = current_weather['temperature_string'], | |
| icon = current_weather['icon_url_base']+current_weather['icon_url_name'], | |
| speed = str(speed))] | |
| def main(): | |
| global fans | |
| global current_weather | |
| global speed | |
| pool = Pool(2, init_worker) | |
| fans = setup_fans(frq = 20) | |
| for f in fans: | |
| f.start(50) | |
| count = 0 | |
| while True: | |
| if count == 0: | |
| print "Getting weather" | |
| pool.apply_async(pywapi.get_weather_from_noaa, args = ('KSFO',), callback = weather_callback) | |
| time.sleep(1) | |
| print ".", | |
| for f in fans: | |
| f.ChangeDutyCycle(speed) | |
| count = (count+1)%600 | |
| return | |
| if __name__ == "__main__": | |
| try: | |
| serve = threading.Thread(target=httpserver.serve, args=(app,), kwargs={"host":'0.0.0.0', "port":'8888'}) | |
| serve.daemon = True | |
| serve.start() | |
| main() | |
| except KeyboardInterrupt as e: | |
| # GPIO.cleanup() | |
| print "Quitting" | |
| exit() |
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