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simple_webserver.py
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import RPi.GPIO as GPIO
import os
from time import sleep
from http.server import BaseHTTPRequestHandler, HTTPServer
from fileio import file_to_set, append_to_file
host_name = 'jas.local' # Change this to your Raspberry Pi IP address
host_port = 8000
class MyServer(BaseHTTPRequestHandler):
""" A special implementation of BaseHTTPRequestHander for reading data from
and control GPIO of a Raspberry Pi
"""
data = set()
def do_HEAD(self):
""" do_HEAD() can be tested use curl command
'curl -I http://server-ip-address:port'
"""
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
def do_GET(self):
""" do_GET() can be tested using curl command
'curl http://server-ip-address:port'
"""
html = '''
<html>
<body style="width:960px; margin: 20px auto;">
<h1>Welcome to my Raspberry Pi</h1>
<p>Current GPU temperature is {}</p>
<p>Turn LED:
<button><a href="/led/on">On</a></button>
<button><a href="/led/off">Off</a></button></p>
<div id="led-status"></div>
<p>Turn Fan:
<button><a href="/fan/on">On</a></button>
<button><a href="/fan/off">Off</a></button></p>
<div id="led-status"></div>
<script>
document.getElementById("led-status").innerHTML="{}";
</script>
</body>
</html>
'''
temp = os.popen("/opt/vc/bin/vcgencmd measure_temp").read()
self.do_HEAD()
status = ''
#check textfile
textfile = 'status.txt'
if self.path=='/':
pass
elif self.path=='/led/on':
status='LED is On'
elif self.path=='/led/off':
status='LED is Off'
elif self.path=='/fan/on':
status='Fan is On'
elif self.path=='/fan/off':
status='Fan is Off'
append_to_file(textfile,status)
content = file_to_set(textfile)
print(content)
print(status)
self.wfile.write(html.format(temp[5:], status).encode("utf-8"))
if __name__ == '__main__':
http_server = HTTPServer((host_name, host_port), MyServer)
print("Server Starts - %s:%s" % (host_name, host_port))
try:
http_server.serve_forever()
except KeyboardInterrupt:
http_server.server_close()