Created
February 2, 2023 16:35
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A webserver on a Raspberry Pi Pico W controlling the onboard LED.
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| import network | |
| import socket | |
| import time | |
| from machine import Pin | |
| led = Pin("LED", Pin.OUT) | |
| ssid = 'SSID' | |
| password = 'PASSWORD' | |
| wlan = network.WLAN(network.STA_IF) | |
| wlan.active(True) | |
| wlan.connect(ssid, password) | |
| html = """<!DOCTYPE html> | |
| <html> | |
| <head> <title>Pico W</title> </head> | |
| <body> <h1>Pico W</h1> | |
| <p>%s</p> | |
| <form action="%s"> | |
| <input type="submit" value="%s" /> | |
| </form> | |
| </body> | |
| </html> | |
| """ | |
| max_wait = 10 | |
| while max_wait > 0: | |
| if wlan.status() < 0 or wlan.status() >= 3: | |
| break | |
| max_wait -= 1 | |
| print('waiting for connection...') | |
| time.sleep(1) | |
| if wlan.status() != 3: | |
| raise RuntimeError('network connection failed') | |
| else: | |
| print('connected') | |
| status = wlan.ifconfig() | |
| print( 'ip = ' + status[0] ) | |
| addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1] | |
| s = socket.socket() | |
| s.bind(addr) | |
| s.listen(1) | |
| print('listening on', addr) | |
| # Listen for connections | |
| while True: | |
| try: | |
| cl, addr = s.accept() | |
| print('client connected from', addr) | |
| request = cl.recv(1024) | |
| print(request) | |
| request = str(request) | |
| led_on = request.find('/light/on') | |
| led_off = request.find('/light/off') | |
| favicon = request.find('/favicon.ico') | |
| print( 'led on = ' + str(led_on)) | |
| print( 'led off = ' + str(led_off)) | |
| print( 'favicon = ' + str(favicon)) | |
| if favicon == 6: | |
| print("request for favicon. ignore.") | |
| elif led_on == 6: | |
| print("led on") | |
| led.value(1) | |
| stateis = "LED is ON" | |
| linkis = "http://"+status[0]+"/light/off" | |
| textis = "Turn LED OFF" | |
| elif led_off == 6: | |
| print("led off") | |
| led.value(0) | |
| stateis = "LED is OFF" | |
| linkis = "http://"+status[0]+"/light/on" | |
| textis = "Turn LED ON" | |
| else: | |
| print("unknown") | |
| led.value(0) | |
| stateis = "LED is OFF" | |
| linkis = "http://"+status[0]+"/light/on" | |
| textis = "Turn LED ON" | |
| response = html % (stateis,linkis,textis) | |
| cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n') | |
| cl.send(response) | |
| cl.close() | |
| except OSError as e: | |
| cl.close() | |
| print('connection closed') |
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