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December 11, 2019 19:18
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Control Raspberry Pi GPIO via http web server: code designed for Cytron Maker pHAT
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| #Control Raspberry Pi GPIO via http web server | |
| #Original code from: https://github.com/e-tinkers/simple_httpserver | |
| #================================================================== | |
| #Code designed for Cytron Maker pHAT | |
| #=================================== | |
| #Added: | |
| #support control for all 8 LEDs ("/ledX/" URL endpoints) | |
| #support control for buzzer | |
| #some minnor HTML code changes | |
| #============================= | |
| #To do: | |
| #LED blinking | |
| #============================= | |
| #Contact me: https://github.com/odolezal | |
| #======================================= | |
| import RPi.GPIO as GPIO | |
| import os | |
| from time import sleep | |
| from http.server import BaseHTTPRequestHandler, HTTPServer | |
| host_name = '10.0.0.12' # 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 | |
| """ | |
| 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> | |
| <head> | |
| <title>GPIO web control</title> | |
| </head> | |
| <body style="width:960px; margin: 20px auto;"> | |
| <h1>GPIO web control</h1> | |
| <p>Current GPU temperature is {}</p> | |
| <p><strong>Control:</strong></p> | |
| <p>Turn LED1: <a href="/led1/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led1/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn LED2: <a href="/led2/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led2/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn LED3: <a href="/led3/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led3/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn LED4: <a href="/led4/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led4/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn LED5: <a href="/led5/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led5/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn LED6: <a href="/led6/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led6/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn LED7: <a href="/led7/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led7/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn LED8: <a href="/led8/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led8/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn all LEDs: <a href="/led-all/on"><font color="green"><strong>ON</strong></font></a> or <a href="/led-all/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p>Turn Buzzer: <a href="/buzzer/on"><font color="green"><strong>ON</strong></font></a> or <a href="/buzzer/off"><font color="red"><strong>OFF</strong></font></a></p> | |
| <p><strong>Status:</strong></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 = '' | |
| if self.path=='/': | |
| GPIO.setmode(GPIO.BCM) | |
| GPIO.setwarnings(False) | |
| GPIO.setup(17, GPIO.OUT) | |
| GPIO.setup(18, GPIO.OUT) | |
| GPIO.setup(27, GPIO.OUT) | |
| GPIO.setup(22, GPIO.OUT) | |
| GPIO.setup(25, GPIO.OUT) | |
| GPIO.setup(12, GPIO.OUT) | |
| GPIO.setup(13, GPIO.OUT) | |
| GPIO.setup(19, GPIO.OUT) | |
| GPIO.setup(26, GPIO.OUT) | |
| elif self.path=='/led1/on': | |
| GPIO.output(17, GPIO.HIGH) | |
| status='LED1 is ON' | |
| elif self.path=='/led1/off': | |
| GPIO.output(17, GPIO.LOW) | |
| status='LED1 is OFF' | |
| elif self.path=='/led2/on': | |
| GPIO.output(18, GPIO.HIGH) | |
| status='LED2 is ON' | |
| elif self.path=='/led2/off': | |
| GPIO.output(18, GPIO.LOW) | |
| status='LED2 is OFF' | |
| elif self.path=='/led3/on': | |
| GPIO.output(27, GPIO.HIGH) | |
| status='LED3 is ON' | |
| elif self.path=='/led3/off': | |
| GPIO.output(27, GPIO.LOW) | |
| status='LED3 is OFF' | |
| elif self.path=='/led4/on': | |
| GPIO.output(22, GPIO.HIGH) | |
| status='LED4 is ON' | |
| elif self.path=='/led4/off': | |
| GPIO.output(22, GPIO.LOW) | |
| status='LED4 is OFF' | |
| elif self.path=='/led5/on': | |
| GPIO.output(25, GPIO.HIGH) | |
| status='LED5 is ON' | |
| elif self.path=='/led5/off': | |
| GPIO.output(25, GPIO.LOW) | |
| status='LED5 is OFF' | |
| elif self.path=='/led6/on': | |
| GPIO.output(12, GPIO.HIGH) | |
| status='LED6 is ON' | |
| elif self.path=='/led6/off': | |
| GPIO.output(12, GPIO.LOW) | |
| status='LED6 is OFF' | |
| elif self.path=='/led7/on': | |
| GPIO.output(13, GPIO.HIGH) | |
| status='LED7 is ON' | |
| elif self.path=='/led7/off': | |
| GPIO.output(13, GPIO.LOW) | |
| status='LED7 is OFF' | |
| elif self.path=='/led8/on': | |
| GPIO.output(19, GPIO.HIGH) | |
| status='LED8 is ON' | |
| elif self.path=='/led8/off': | |
| GPIO.output(19, GPIO.LOW) | |
| status='LED8 is OFF' | |
| elif self.path=='/buzzer/on': | |
| GPIO.output(26, GPIO.HIGH) | |
| status='Buzzer is ON' | |
| elif self.path=='/buzzer/off': | |
| GPIO.output(26, GPIO.LOW) | |
| status='Buzzer is OFF' | |
| elif self.path=='/led-all/on': | |
| GPIO.output(17, GPIO.HIGH) | |
| GPIO.output(18, GPIO.HIGH) | |
| GPIO.output(27, GPIO.HIGH) | |
| GPIO.output(22, GPIO.HIGH) | |
| GPIO.output(25, GPIO.HIGH) | |
| GPIO.output(12, GPIO.HIGH) | |
| GPIO.output(13, GPIO.HIGH) | |
| GPIO.output(19, GPIO.HIGH) | |
| status='All LEDs are ON' | |
| elif self.path=='/led-all/off': | |
| GPIO.output(17, GPIO.LOW) | |
| GPIO.output(18, GPIO.LOW) | |
| GPIO.output(27, GPIO.LOW) | |
| GPIO.output(22, GPIO.LOW) | |
| GPIO.output(25, GPIO.LOW) | |
| GPIO.output(12, GPIO.LOW) | |
| GPIO.output(13, GPIO.LOW) | |
| GPIO.output(19, GPIO.LOW) | |
| status='All LEDs are OFF' | |
| 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() |
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I wroet a small web server that allows programmatic access to GPIO pins available on the machine, without having to hardcode them in a python script: https://github.com/lovasoa/http-gpio