micropython(esp8266)adc采集通过tcp发送采集的数据

Posted 2021-06-15 WILLPOWER-

引脚

A0为adc采集端。

tcp连接

ip:192.168.4.1 端口:9999

代码

import network, socket
from machine import ADC, Pin
import time
ip = '192.168.4.1'
port = 9999  #端口号

ap = network.WLAN(network.AP_IF)
# create access-point interface
ap.config(essid='ESP-AP',password='12345678') # set the ESSID of the access point
ap.active(True)         # activate the interface
while True:
    if(ap.isconnected() == True):
        time.sleep(4);
        print("connected!")
        break
adc = ADC(0)


listenSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
addr = (ip, port)
listenSocket.bind(addr)
listenSocket.listen(5)   #监听套接字, 最多允许一个连接
while True:
    print("accepting.....")
    conn, addr = listenSocket.accept()   #接收连接请求，返回收发数据的套接字对象和客户端地址
    print(addr, "connected")

    while True:
        time.sleep(1)
        if(ap.isconnected() == False):   #判断客户端是否断开连接
            print("close socket")
            conn.close()   #关闭套接字
            break
        adcVal = str(3.3/1024*adc.read())
        print('voltage is '+ adcVal +'v')
        ret = conn.send(adcVal + '\\r\\n')   #发送数据