[esp32]ESP8266使用micropython连接MQTT控制家电

设备

• ESP8266继电器
• ESP8266固件烧录器
• ESP-01S
  如图

软件

• Thonny
• AiThinker_Serial_Tool_V1.2.3
• flash_download_tools_v3.6.8
• esp8266-20190529-v1.11.bin

概要

经历了很长很长很长很长的时间，跳过了各种坑，终于，在居家隔离的日子里，把这个项目搞定了
首先呢，淘宝购买了设备，先用 Raspberry pi RP 连接ESP01S、控制继电器，联网，控制电器，发现硬件多、预算高，然后就更换成了ESP8266继电器。刷了很长很长时间的固件，发现只能成功刷入原厂AT，micropython刷不进去，或者刷进去启动乱码，毕竟咱们AT语句不熟，最后，搁置了一段时间，成功刷入micropython

1. 刷固件
   下载软件flash_download_tools_v3.6.8，好像百度一大堆，大同小异，然后选择固件esp8266-20190529-v1.11.bin，输入开始位置0x00000，清除ERASE，然后开始刷入START，
   
   刷入成功之后，使用AiThinker_Serial_Tool_V1.2.3连接，你会看到一堆乱码，然后是熟悉的python命令行
   
   然后编写boot.py文件，

import network
import time
from machine import Pin
from umqtt.simple import MQTTClient
import usocket as socket

status = 'run'
server = "192.168.0.10"
port = 1883
ClientId = "0"
TOPIC = b"iot_eps32_001"
username = 'iot'
password = 'passwd'
# 继电器
g0 = Pin(0, Pin.OUT, value=0)
# 指示灯
g2 = Pin(2, Pin.OUT, value=0)
client = None

print("clientid:", ClientId, "\n", "Broker:", server, "\n", "User Name:", username, "\n", "Password:", password, "\n")


def do_connect():
    sta_if = network.WLAN(network.STA_IF)
    ap_if = network.WLAN(network.AP_IF)
    if ap_if.active():
        ap_if.active(False)
    if not sta_if.isconnected():
        print('connecting to network...')
    sta_if.active(True)
    sta_if.connect('wifissid', 'wifipasswd')  # wifi的SSID和密码
    while not sta_if.isconnected():
        pass
    print('network config:', sta_if.ifconfig())
    return


def sub_cb(topic, msg):
    global client, status
    topic = topic.decode('utf-8')
    msg = msg.decode('utf-8')
    print(topic, ':', msg)
    if topic == 'iot_eps32_001':
        if msg == 'close':
            status = 'close'
            # client.disconnect()
            return
        elif msg == 'test':
            g2.on()
            time.sleep(1)
            g2.off()
            time.sleep(2)
            g2.on()
            time.sleep(1)
            g2.off()
            time.sleep(2)
            g2.on()
        elif msg == 'on':
            g0.on()
        elif msg == 'off':
            g0.off()
        pass
    return


def connect():
    global client
    client = MQTTClient(client_id=ClientId, server=server, port=port, user=username, password=password, keepalive=60)
    # please make sure keepalive value is not 0
    client.set_callback(sub_cb)
    client.connect()
    print(client, status)
    client.subscribe(TOPIC)
    print("Connected to %s, subscribed to %s topic" % (server, TOPIC))

    while status == 'run':
        client.wait_msg()
        time.sleep(0.01)
        pass
    client.disconnect()
    return


if __name__ == '__main__':
    do_connect()
    connect()

修改你的mqtt服务器账户密码，WIFI账户密码，就可以使用了