第一、搭建MircoPython开发环境
下载 micropython 环境包：点击下载
下载后解压，首先双击打开 uPyCraft 软件，刷入固件，首先点击 tools-->BurnFirmware ,再选择esp8266或者esp32，选择开发板端口，选择需要刷入的固件，固件在下载的环境包中，点击ok即可刷入，如下图所示：
02.png
等待进度条走完就刷入成功了。
附，其他链接：
单片机串口驱动：点击下载
micropython官方文档：点击跳转
第二、hello world 程序测试
点击file--new 新建文件，命名main，点击ok保存，如下图所示
点击tools，再点击serial和board分别选择端口、开发板类型esp8266或者esp32，如下图
03.png
输入print("hello word") ，点击下载图标，即可下载成功，在下方会输出打印的hello world，如下图
print("hello word")
04.png
第三 TCP示例程序
注意：每次下载程序后都需要重启开发板，例如按开发板上的reset按键重启
import time
from machine import Timer
import socket
#需要修改的地方
wifiName = "newhtc" #wifi 名称，不支持5G wifi
wifiPassword = "qq123456" #wifi 密码
clientID = "7d54f85af42976ee3c2693e692a6bb59" # Client ID ，密钥，巴法云控制台获取
myTopic='myled002' # 需要订阅的主题值，巴法MQTT控制台创建
#默认设置
serverIP = 'bemfa.com' # mqtt 服务器地址
port = 8344
# WIFI 连接函数
def do_connect():
import network
sta_if = network.WLAN(network.STA_IF)
if not sta_if.isconnected():
print('connecting to network...')
sta_if.active(True)
sta_if.connect(wifiName, wifiPassword)
while not sta_if.isconnected():
pass
print('connect WiFi ok')
# tcp 客户端初始化
def connect_and_subscribe():
addr_info = socket.getaddrinfo(serverIP, port)
addr = addr_info[0][-1]
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # 创建TCP的套接字,也可以不给定参数。默认为TCP通讯方式
client.connect(addr) # 设置要连接的服务器端的IP和端口,并连接
substr = 'cmd=1&uid='+clientID+'&topic='+myTopic+'\r\n'
client.send(substr.encode("utf-8"))
print("Connected to %s" % serverIP)
return client
#心跳
def Ping(self):
# 发送心跳
try:
keeplive = 'ping\r\n'
client.send(keeplive.encode("utf-8"))
except:
restart_and_reconnect()
# 重新连接
def restart_and_reconnect():
print('Failed to connect to TCP broker. Reconnecting...')
time.sleep(10)
machine.reset()
#开始连接WIFI
do_connect()
#开始连接TCP
try:
client = connect_and_subscribe()
except OSError as e:
restart_and_reconnect()
#开启定时器，定时发送心跳
tim = Timer(-1)
tim.init(period=30000, mode=Timer.PERIODIC, callback=Ping)
while True:
try:
data = client.recv(256) # 从服务器端套接字中读取1024字节数据
if(len(data) != 0): # 如果接收数据为0字节时,关闭套接字
data=data.decode('utf-8')
print(data.strip()) # 去掉尾部回车换行符，并打印接收到的字符
except OSError as e: # 如果出错就重新启动
print('Failed to connect to broker. Reconnecting...')
restart_and_reconnect()
第四 MQTT示例程序
from umqtt.simple import MQTTClient
import time
from machine import Timer
#需要修改的地方
wifiName = "newhtc" #wifi 名称，不支持5G wifi
wifiPassword = "qq123456" #wifi 密码
clientID = "7d54f85af42976ee3c2693e692a6bb59" # Client ID ，密钥，巴法云控制台获取
myTopic='light002' # 需要订阅的主题值，巴法MQTT控制台创建
#默认设置
serverIP = "bemfa.com" # mqtt 服务器地址
port = 9501
# WIFI 连接函数
def do_connect():
import network
sta_if = network.WLAN(network.STA_IF)
if not sta_if.isconnected():
print('connecting to network...')
sta_if.active(True)
sta_if.connect(wifiName, wifiPassword)
while not sta_if.isconnected():
pass
print('connect WiFi ok')
# 接收消息，并处理
def MsgOK(topic, msg): # 回调函数，用于收到消息
print((topic, msg)) # 打印主题值和消息值
if topic == myTopic.encode(): # 判断是不是发给myTopic的消息
if msg == b"on": # 当收到on
print("rec on")
elif msg == b"off": # 当收到off
print("rec off")
#初始化mqtt连接配置
def connect_and_subscribe():
client = MQTTClient(clientID, serverIP,port)
client.set_callback(MsgOK)
client.connect()
client.subscribe(myTopic)
print("Connected to %s" % serverIP)
return client
def restart_and_reconnect():
print('Failed to connect to MQTT broker. Reconnecting...')
time.sleep(10)
machine.reset()
#开始连接WIFI
do_connect()
#开始连接MQTT
try:
client = connect_and_subscribe()
except OSError as e:
restart_and_reconnect()
while True:
try:
client.check_msg()
except OSError as e: #如果出错就重新启动
print('Failed to connect to MQTT broker. Reconnecting...')
restart_and_reconnect()
