122 lines
3.2 KiB
Python
122 lines
3.2 KiB
Python
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# Complete project details at https://RandomNerdTutorials.com/raspberry-pi-pico-web-server-micropython/
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# Import necessary modules
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import network
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import socket
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import time
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import random
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from machine import Pin
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from secrets import secrets
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# Create an LED object on pin 'LED'
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led = Pin('LED', Pin.OUT)
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# Wi-Fi credentials
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ssid = secrets['ssid']
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password = secrets['password']
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# HTML template for the webpage
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def webpage(random_value, state):
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html = f"""
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<!DOCTYPE html>
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<html>
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<head>
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<title>Pico Web Server</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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</head>
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<body>
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<h1>Raspberry Pi Pico Web Server</h1>
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<h2>Led Control</h2>
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<form action="./lighton">
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<input type="submit" value="Light on" />
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</form>
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<br>
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<form action="./lightoff">
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<input type="submit" value="Light off" />
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</form>
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<p>LED state: {state}</p>
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<h2>Fetch New Value</h2>
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<form action="./value">
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<input type="submit" value="Fetch value" />
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</form>
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<p>Fetched value: {random_value}</p>
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</body>
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</html>
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"""
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return str(html)
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# Connect to WLAN
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wlan = network.WLAN(network.STA_IF)
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wlan.active(True)
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wlan.connect(ssid, password)
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# Wait for Wi-Fi connection
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connection_timeout = 10
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while connection_timeout > 0:
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if wlan.status() >= 3:
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break
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connection_timeout -= 1
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print('Waiting for Wi-Fi connection...')
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time.sleep(1)
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# Check if connection is successful
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if wlan.status() != 3:
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raise RuntimeError('Failed to establish a network connection')
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else:
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print('Connection successful!')
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network_info = wlan.ifconfig()
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print('IP address:', network_info[0])
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# Set up socket and start listening
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addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
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s = socket.socket()
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s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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s.bind(addr)
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s.listen()
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print('Listening on', addr)
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# Initialize variables
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state = "OFF"
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random_value = 0
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# Main loop to listen for connections
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while True:
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try:
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conn, addr = s.accept()
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print('Got a connection from', addr)
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# Receive and parse the request
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request = conn.recv(1024)
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request = str(request)
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print('Request content = %s' % request)
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try:
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request = request.split()[1]
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print('Request:', request)
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except IndexError:
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pass
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# Process the request and update variables
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if request == '/lighton?':
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print("LED on")
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led.value(1)
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state = "ON"
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elif request == '/lightoff?':
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led.value(0)
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state = 'OFF'
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elif request == '/value?':
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random_value = random.randint(0, 20)
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# Generate HTML response
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response = webpage(random_value, state)
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# Send the HTTP response and close the connection
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conn.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n')
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conn.send(response)
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conn.close()
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except OSError as e:
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conn.close()
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print('Connection closed')
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