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Copy pathLight.ino
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Light.ino
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#include <ESP8266WiFi.h>
#include <Ticker.h>
#include <ESP8266HTTPClient.h>
#ifndef STASSID
#define STASSID ""
#define STAPSK ""
#endif
const char* ssid = STASSID;
const char* password = STAPSK;
String URL = "http://192.168.31.106/api/hk/iots/heartBeat";
String iotCode = "light_one";
String deviceType = "LIGHT";
// Create an instance of the server
// specify the port to listen on as an argument
WiFiServer server(80);
// 创建定时器
Ticker ticker;
// 控制继电器的 GPIO
int pin = 0;
void setup() {
Serial.begin(115200);
// 继电器的初始值设为低电平，低电平即吸合继电器
pinMode(pin, OUTPUT);
digitalWrite(pin, 1);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print(F("Connecting to "));
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(F("."));
}
Serial.println();
Serial.println(F("WiFi connected"));
// Start the server
server.begin();
Serial.println(F("Server started"));
// Print the IP address
Serial.println(WiFi.localIP());
// 5 秒上报一次状态
ticker.attach(5, heart);
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
Serial.println(F("new client"));
client.setTimeout(5000); // default is 1000
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(F("request: "));
Serial.println(req);
// Match the request
int val;
if (req.indexOf(F("/gpio/0")) != -1) {
val = 0;
} else if (req.indexOf(F("/gpio/1")) != -1) {
val = 1;
} else {
Serial.println(F("invalid request"));
val = digitalRead(pin);
}
// Set LED according to the request
digitalWrite(pin, val);
// read/ignore the rest of the request
// do not client.flush(): it is for output only, see below
while (client.available()) {
// byte by byte is not very efficient
client.read();
}
// Send the response to the client
// it is OK for multiple small client.print/write,
// because nagle algorithm will group them into one single packet
client.print(F("HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>\r\nGPIO is now "));
client.print((val) ? F("high") : F("low"));
client.print(F("<br><br>Click <a href='http://"));
client.print(WiFi.localIP());
client.print(F("/gpio/1'>here</a> to switch LED GPIO on, or <a href='http://"));
client.print(WiFi.localIP());
client.print(F("/gpio/0'>here</a> to switch LED GPIO off.</html>"));
// The client will actually be *flushed* then disconnected
// when the function returns and 'client' object is destroyed (out-of-scope)
// flush = ensure written data are received by the other side
Serial.println(F("Disconnecting from client"));
}
void heart(){
// String heartStr = "iotCode: " + iotCode + ", 设备类型: " + deviceType + ", 心跳检测, IP地址: " + WiFi.localIP().toString() + F(", 开关值为: ") + digitalRead(pin);
// Serial.println(heartStr);
//创建 HTTPClient 对象
HTTPClient httpClient;
URL = URL + "?iotCode=" + iotCode + "&ipAddr=" + WiFi.localIP().toString() + "&deviceType=" + deviceType + "&switchValue=" + digitalRead(pin);
Serial.println(URL);
httpClient.begin(URL);
httpClient.GET();
//关闭ESP8266与服务器连接
httpClient.end();
}