Dibug ESP32/ESP8266 MicroPython Web Server – Control Outputs

最新推荐文章于 2023-09-14 03:42:37 发布

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最新推荐文章于 2023-09-14 03:42:37 发布

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文章标签： websocket python windows

本文链接：https://blog.youkuaiyun.com/uPython/article/details/113383024

版权

该博客介绍了如何调试ESP32/ESP8266上运行的MicroPython Web服务器，解决连接错误和多终端访问问题。通过整理boot.py和main.py文件，修复了Socket端口未关闭和端口不固定的故障。此外，推荐了uPycraft工具用于ESP8266的MicroPython固件刷写，并提供了下载链接和相关教学视频。

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实验内容及步骤

实验内容

ESP32/ESP8266 MicroPython Web Server – Control Outputs

实验步骤

整理boot.py，main.py两个文件

boot.py

# 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)

main.py

# 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()

问题描述：

1，会报错
2，只能有一个终端能够连接，与实际使用不服

原因分析：

1，程序Socket端口不关闭，一直处于ACCEP状态
2，Socket端口未固定

解决方案：

# 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


while True:
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  s.bind(('',80))
  s.listen(5)
  conn, addr = s.accept()
  print('Got a connection from %s' % str(addr))
  request = conn.recv(2048)
  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()
  s.close()