MicroPython ESP32网页实时更新DHT11数据显示

📌相关篇《MicroPython ESP32 读取DHT11温湿度传感器数据》
📍《【Micropython esp32/8266】网页点灯控制示例》

✨本例综合以上两篇文章内容实现：在本地网页中显示DHT11温度传感器数据。可以做到在线监测湿度度数据变化。

✨本示例基于Thonny平台下开发。✨
🎉固件版本：esp32-20220618-v1.19.1应该也兼容最新的版本。
🌼效果如下：
📖工程架构

⛳注意事项

🚩运行程序前，DHT11传感器必须已经接到指定定义的引脚上了，否则运行会报错！！！
🧲在boot.py为文件中需要修改成个人的WiFi信息。
🎯本地路由器设置不能开启AP隔离功能，否则设备与设备直接无法正常访问。
🔰设备端和访问端必须在同一个网络环境下。
🏳‍🌈不支持5G网络。

步骤

在这里插入图片描述

📘代码实现

boot.py

# This file is executed on every boot (including wake-boot from deepsleep)
#import esp
#esp.osdebug(None)
#import uos, machine
#uos.dupterm(None, 1) # disable REPL on UART(0)
#import gc
#import webrepl
#webrepl.start()
#gc.collect()try:import usocket as socket
except:import socketfrom machine import Pin
import networkimport esp
esp.osdebug(None)import gc
gc.collect()
# wifi信息
ssid = 'MERCURY_D268G'	# 填写自己的WiFi信息
password = 'pba5ayzk'	# 填写自己的WiFi信息station = network.WLAN(network.STA_IF)station.active(True)
station.connect(ssid, password)while station.isconnected() == False:passprint('Connection successful')
print(station.ifconfig())led = Pin(2, Pin.OUT)

📑main.py

import dht
import machined = dht.DHT11(machine.Pin(4))
#d.measure()
#t=d.temperature() # eg. 23 (°C)
#h=d.humidity()    # eg. 41 (% RH)def web_page():d.measure()html = """<html><head><meta charset="utf-8"><meta http-equiv="refresh" content="6"><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="icon" href="data:,"><style>body { text-align: center; font-family: "Trebuchet MS", Arial;}table { border-collapse: collapse; width:45%; margin-left:auto; margin-right:auto;}th { padding: 12px; background-color: #0043af; color: white; }tr { border: 1px solid #ddd; padding: 12px; }tr:hover { background-color: #bcbcbc; }td { border: none; padding: 12px; }.sensor { color:red; font-weight: bold; background-color: #bcbcbc; padding: 1px;</style></head><body><h1>ESP Web DHT11 DATA</h1><table><tr><th>MEASUREMENT</th><th>VALUE</th></tr><tr><td>Temperature</td><td><span class="sensor">""" + str(d.temperature()) + """ °C</span></td></tr><tr><td>Humidity</td><td><span class="sensor">""" + str(d.humidity()) + """ %</span></td></tr></body></html>"""return htmls = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 80))
s.listen(5)while True:try:        if gc.mem_free() < 102000:gc.collect()                    conn, addr = s.accept()
#        conn.settimeout(5.0)print('Got a connection from %s' % str(addr))
#         request = conn.recv(1024)	# 为了减少内存开销，取消打印信息
#         conn.settimeout(None)
#         request = str(request)
#         print('Content = %s' % request)print('Content = %s' % request)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()except OSError as e:        conn.close()print('Connection closed')