#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <Ticker.h>#define DEVICE_ID "V36625K243D8ROR1"
#define DEVICE_DATA  "#25,1#"char* ssid = "lxy2305";
char* passwd = "123456789a";const uint16_t port = 8647;
const char * host = "tcp.tlink.io"; // ip or dns
WiFiClient client;//创建一个tcp client连接
int  heartbeart_flag = 0;
char send_data[32];
Ticker tk;
int temp_value = 25;
int switch_value = 0;
void time_coming_cicyle_cb(void)
{heartbeart_flag = 1;
}// 复位或上电后运行一次:
void setup() {//在这里加入初始化相关代码，只运行一次:Serial.begin(115200);WiFi.mode(WIFI_STA);WiFi.begin(ssid, passwd);Serial.println("connecting to router... ");//等待wifi连接成功while (WiFi.status() != WL_CONNECTED) {Serial.print(".");delay(500);}Serial.println("");Serial.print("WiFi connected, local IP address:");Serial.println(WiFi.localIP());delay(500);Serial.print("connecting to ");Serial.println(host);if (!client.connect(host, port)) {Serial.println("connection failed");Serial.println("wait 5 sec...");delay(5000);return;}else{Serial.println("connect to tcp server success.");Serial.println("Send this data to tcp server");client.print(DEVICE_ID);delay(500);client.print(DEVICE_DATA);// call time_coming_cicyle_cb every 30stk.attach(5, time_coming_cicyle_cb);}
}void loop() {if (1 == heartbeart_flag){if (temp_value >= 30){temp_value = 20;  }else{temp_value = temp_value + 1;  }switch_value = !switch_value;sprintf(send_data, "#%d,%d#", temp_value, switch_value);client.print(send_data);Serial.print("send data : ");Serial.println(send_data);heartbeart_flag = 0;}String recv_data = client.readString(); //   client.readStringUntil('r');if (recv_data != NULL){Serial.print("Receive data : ");Serial.println(recv_data);}delay(20);
}

if (1 == heartbeart_flag){if (temp_value >= 30){temp_value = 20;  }else{temp_value = temp_value + 1;  }switch_value = !switch_value;sprintf(send_data, "#%d,%d#", temp_value, switch_value);client.print(send_data);Serial.print("send data : ");Serial.println(send_data);heartbeart_flag = 0;}