【ESP32】MicroPython Web服务控制IO输出

最新推荐文章于 2025-02-05 23:09:08 发布

望天边星宿

最新推荐文章于 2025-02-05 23:09:08 发布

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分类专栏： esp32 文章标签： esp32

本文链接：https://blog.youkuaiyun.com/See_Star/article/details/121376662

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本文介绍如何使用ESP32创建一个简易Web服务器，主要内容包括准备ESP32开发板、编写boot.py和main.py文件、配置WiFi参数以及实现网页控制LED灯的功能。

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一、准备工作

步骤1：将esp32连接到电脑，测试连接成功。

步骤2：创建boot.py和main.py

boot文件将在开机时运行一次，包括导入库、网络凭据、实例化PIN、连接网络等其他配置。

main文件运行网络服务接收客户端请求等。

二、boot

此处需要配置wifi账号（ssid）和密码（password）。

# Complete project details at https://RandomNerdTutorials.com


try:
  import usocket as socket
except:
  import socket

from machine import Pin
import network

import esp
esp.osdebug(None)

import gc
gc.collect()

ssid = 'REPLACE_WITH_YOUR_SSID'
password = 'REPLACE_WITH_YOUR_PASSWORD'

station = network.WLAN(network.STA_IF)

station.active(True)
station.connect(ssid, password)

while station.isconnected() == False:
  pass

print('Connection successful')
print(station.ifconfig())

led = Pin(2, Pin.OUT)

三、main

# Complete project details at https://RandomNerdTutorials.com

def web_page():
  if led.value() == 1:
    gpio_state="ON"
  else:
    gpio_state="OFF"
  
  html = """<html><head> <title>ESP Web Server</title> <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" href="data:,"> <style>html{font-family: Helvetica; display:inline-block; margin: 0px auto; text-align: center;}
  h1{color: #0F3376; padding: 2vh;}p{font-size: 1.5rem;}.button{display: inline-block; background-color: #e7bd3b; border: none; 
  border-radius: 4px; color: white; padding: 16px 40px; text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}
  .button2{background-color: #4286f4;}</style></head><body> <h1>ESP Web Server</h1> 
  <p>GPIO state: <strong>""" + gpio_state + """</strong></p><p><a href="/?led=on"><button class="button">ON</button></a></p>
  <p><a href="/?led=off"><button class="button button2">OFF</button></a></p></body></html>"""
  return html

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 80))
s.listen(5)

while True:
  conn, addr = s.accept()
  print('Got a connection from %s' % str(addr))
  request = conn.recv(1024)
  request = str(request)
  print('Content = %s' % request)
  led_on = request.find('/?led=on')
  led_off = request.find('/?led=off')
  if led_on == 6:
    print('LED ON')
    led.value(1)
  if led_off == 6:
    print('LED OFF')
    led.value(0)
  response = web_page()
  conn.send('HTTP/1.1 200 OK\n')
  conn.send('Content-Type: text/html\n')
  conn.send('Connection: close\n\n')
  conn.sendall(response)
  conn.close()