**兩隻小豬**

#include <SoftwareSerial.h>
#define _baudrate   9600
#define _rxpin      4
#define _txpin      5
#include "Timer.h"
Timer t;
SoftwareSerial debug( _rxpin, _txpin ); // RX, TX
//*-- IoT Information
#define SSID "Huang"
#define PASS "e53asus0211"
#define IP "184.106.153.149" // ThingSpeak IP Address: 184.106.153.149
// 使用 GET 傳送資料的格式
// GET /update?key=[THINGSPEAK_KEY]&field1=[data 1]&filed2=[data 2]...;
String GET = "GET /update?key=MIN085MR4XATH8VD";

void setup() {
    Serial.begin( _baudrate );
    debug.begin( _baudrate );
    t.every(100, Wifi_main);
}
void loop() {
  t.update();
}
int Wifi_State,delaytime,ErrorCount,W=12,D=34;
String cmd;
void Wifi_main(){
  switch (Wifi_State) {
    case 0: //-----------------------------------------------initial sent AT test
      sendDebug("AT");
      Wifi_State=1;
      break;
    case 1:
      if (delaytime==10){ //delay 1 sec
        delaytime=0;
        if(debug.find("OK")){ //test success
          Serial.println("RECEIVED: OK\nData ready to sent!");
          Wifi_State=2; //next setting wifi mode
        }
        else{ //test fail
          Serial.println("NO RESEPONCE!");
          Wifi_State=7; //go back reset delay
        }
      }
      else{delaytime++;}
      break;
    case 2://-----------------------------------------------setting wifi mode
      debug.println("AT+CWMODE=1");
      Wifi_State=3; //next setting wifi mode
      break;
    case 3:
      if (delaytime==20){ //delay 2 sec
        delaytime=0;
        cmd="AT+CWJAP=\"";
        cmd+=SSID;
        cmd+="\",\"";
        cmd+=PASS;
        cmd+="\"";
        sendDebug(cmd);
        Wifi_State=4; //next check wifi respones after delay 5 sec
      }
      else{delaytime++;}
      break;
    case 4:
      if (delaytime==50){ //delay 5 sec
        delaytime=0;
        if(debug.find("OK")){
          Serial.println("RECEIVED: OK");
          Wifi_State=5; //next sent data to the clould
        }
        else{ 
          Serial.println("RECEIVED: Error");
          Wifi_State=2; //back
        }
      }
      else{delaytime++;}
      break;
    case 5:  //-----------------------------------------------sent data to the clould
      // 設定 ESP8266 作為 Client 端
      cmd = "AT+CIPSTART=\"TCP\",\"";
      cmd += IP;
      cmd += "\",80";
      sendDebug(cmd);
      if(debug.find("Error" )){Serial.print( "RECEIVED: Error\nExit1" );}
      cmd = GET + "&field1=" + String(W) + "&field2=" + String(D) +"\r\n";
      debug.print( "AT+CIPSEND=" );
      debug.println( cmd.length() );
      if(debug.find( ">" ) ){
          Serial.print(">");
          Serial.print(cmd);
          debug.print(cmd);
      }
      else{debug.print( "AT+CIPCLOSE" );}
      if( debug.find("OK") ){
          Serial.println( "RECEIVED: OK" );
          Wifi_State=6; //next go space and wait
      }
      else{
        Serial.println( "RECEIVED: Error" );
        if (ErrorCount==5){
          ErrorCount=0;
          Wifi_State=7; //there was something wrong must be go back reset.
        }
        else{ 
          Wifi_State=6; //restart
          ErrorCount++;
        }
      }
      break;
    case 6: //-----------------------------------------------end sent
      if (delaytime==50){ //delay 5 sec
        delaytime=0;
        Wifi_State=5; //back 
      }
      else{delaytime++;}
      break;
    case 7 : //-----------------------------------------------go back reset delay
      if (delaytime==50){ //delay 5 sec
        delaytime=0;
        Wifi_State=0; //back 
      }
      else{delaytime++;}
      break;
  }
}
void sendDebug(String sent_cmd)
{
    Serial.print("SEND: ");
    Serial.println(sent_cmd);
    debug.println(sent_cmd);
}