ESP8266-1S服务器推送环境温度           

1

材料准备

arduino uno r3 开发板

esp8266-1s WiFi模块

DS18B20 测温元件

排线若干

面包板一个

ESP8266一款超低功耗的串口WiFi模块，专为移动设备和物联网应用设计，可将用户的物理设备连接到Wi-Fi 无线网络上，进行互联网或局域网通信，实现联网功能，本次实验通过该模块为arduino开发板增加联网功能

2

电路接线

ESP8266         Arduino Uno

UTXD     <------> 1（TX1）

GND      <------> GND

VCC       <------> 3.3V(如果网络连接不稳定，则建议选择独立电源)

UTXD    <------> 0（RX0)

Arduino Uno与DS18B20接线见 

3

代码

#include "WiFiEsp.h"#include<DS18B20.h>// Emulate Serial1 on pins 6/7 if not present#ifndef HAVE_HWSERIAL1#include "SoftwareSerial.h"  SoftwareSerial Serial1(7, 6); // RX, TX#endif
DS18B20 ds(2); char ssid[] = "Tenda_18B210";            // 无线网名称 (name)char pass[] = "*********";        // 无线密码int status = WL_IDLE_STATUS;     // the Wifi radio's status
char server[] = "192.168.0.166"; //远程服务器ip
// Initialize the Ethernet client objectWiFiEspClient client;
void setup(){  // initialize serial for debugging  Serial.begin(9600);  // initialize serial for ESP module  Serial1.begin(9600); //使用软串口，注意波特率不要高于57600  // initialize ESP module  WiFi.init(&Serial1);
  // check for the presence of the shield  if (WiFi.status() == WL_NO_SHIELD) {    Serial.println("WiFi shield not present");    // don't continue    while (true);  }
  // attempt to connect to WiFi network  while ( status != WL_CONNECTED) {    Serial.print("Attempting to connect to WPA SSID: ");    Serial.println(ssid);    // Connect to WPA/WPA2 network    status = WiFi.begin(ssid, pass);  }
  // you're connected now, so print out the data  Serial.println("You're connected to the network");    printWifiStatus();
  Serial.println();  Serial.println("Starting connection to server...");  // if you get a connection, report back via serial  if (client.connect(server, 8080)) {    Serial.println("Connected to server");    // Make a HTTP request//    client.println("GET /asciilogo.txt HTTP/1.1");//    client.println("Host: arduino.cc");//    client.println("Connection: close");//    client.println();  }}
void loop(){  // if there are incoming bytes available  // from the server, read them and print them  while (client.available()) {    char c = client.read();    Serial.write(c);  }
  // if the server's disconnected, stop the client  if (!client.connected()) {    Serial.println();    Serial.println("Disconnecting from server...");      client.stop();
    // do nothing forevermore    while (true){      };  }  if(client.connected()){     String temp = getAndSendTemperatureAndHumidityData(); // 获取温湿度数据发送到Http服务器上去     client.println("Temp:"+temp+" C");        delay(2000);  }}

void printWifiStatus(){  // print the SSID of the network you're attached to  Serial.print("SSID: ");  Serial.println(WiFi.SSID());
  // print your WiFi shield's IP address  IPAddress ip = WiFi.localIP();  Serial.print("IP Address: ");  Serial.println(ip);
  // print the received signal strength  long rssi = WiFi.RSSI();  Serial.print("Signal strength (RSSI):");  Serial.print(rssi);  Serial.println(" dBm");}/* *  * 读取温湿度数据，然后发送到HTTP服务器上去 *  */String getAndSendTemperatureAndHumidityData(){    return String(ds.getTempC());}

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实验结果

1.使用TCP测试工具启动一个HTTP服务器

2.烧写程序并打开串口查看结果

3.查看服务器

Tips

1. 在实验过程发现我是用的arduino 3.3V给esp8266-1s供电网络不稳定，直接改成5v就比较稳定了。

2. esp8266默认出厂波特率是115200，建议使用AT指令改一下：AT+UART=9600,8,1,0,0