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Micropython on ESP32 running a Webserver that blinks the LED according to a parameter
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| # First replace SSID and PASS with yor Wi-Fi's SSID and password. | |
| # The IP for the Webserver will appear in the console. | |
| # In order to make the LED blink type the following | |
| # in your Web Browser or curl: | |
| # http://<esp32_ip>/blink=<amount> | |
| # For example: | |
| # http://192.168.1.50/blink=4 | |
| import socket | |
| from machine import Pin | |
| from time import sleep_ms | |
| import re | |
| led = Pin(2, Pin.OUT) | |
| HOST = "0.0.0.0" # Standard loopback interface address (localhost) | |
| PORT = 80 # Port to listen on (non-privileged ports are > 1023) | |
| SSID = 'YOUR_WIFI_SSID' | |
| PASS = 'YOUR_WIFI_PASS' | |
| def do_connect(): | |
| import network | |
| wlan = network.WLAN(network.STA_IF) | |
| wlan.active(True) | |
| if not wlan.isconnected(): | |
| print('connecting to network...') | |
| wlan.connect(SSID, PASS) | |
| while not wlan.isconnected(): | |
| pass | |
| print('network config:', wlan.ifconfig()) | |
| def blink_led(num): | |
| for i in range(num*2): | |
| led.value(not led.value()) | |
| sleep_ms(500) | |
| led.value(0) | |
| def http_server(): | |
| html = """<!DOCTYPE html> | |
| <html> | |
| <head> <title>ESP32 Server</title> </head> | |
| <body> | |
| <h1>Welcome to ESP32 Server, the LED will blink if the correct parameter specified</h1> | |
| </body> | |
| </html> | |
| """ | |
| addr = socket.getaddrinfo(HOST, PORT)[0][-1] | |
| s = socket.socket() | |
| s.bind(addr) | |
| s.listen(1) | |
| print('listening on', addr) | |
| while True: | |
| cl, addr = s.accept() | |
| print('client connected from', addr) | |
| cl_file = cl.makefile('rwb', 0) | |
| while True: | |
| line = cl_file.readline() | |
| r1 = re.match('GET',line) | |
| if r1: | |
| param = line.decode().split()[1].replace('?','=').split('=')[1] | |
| if param == 'blink': | |
| blink_num = int(line.decode().split()[1].replace('?','=').split('=')[2]) | |
| if not line or line == b'\r\n': | |
| break | |
| cl.send('HTTP/1.0 200 OK\r\nContent-type: text/html\r\n\r\n') | |
| cl.send(html) | |
| try: | |
| blink_num | |
| blink_led(blink_num) | |
| except NameError: | |
| blink_num = None | |
| cl.close() | |
| do_connect() | |
| http_server() |
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