main.cpp

00001 #include "mbed.h" 
00002 #include "MFRC522.h" 
00003 #include "ESP8266.h"               // Include header file from Author: Antonio Quevedo
00004 #include "math.h"
00005 #include <string>
00006 
00007 // FRDM-K64F (Freescale) Pin for MFRC522 reset 
00008 #define MF_RESET    PTD0 
00009 #define SERIAL_1
00010 
00011 #define APIKEY XE2W5EIXWN6LA234    //Put "Write key" of your channel in thingspeak.com 
00012 #define IP "184.106.153.149"       // IP Address of "api.thingspeak.com\"
00013 #define WIFI_SSID "RajasiPhone"
00014 #define WIFI_PASS "youcantguessmypassword"
00015 
00016 Serial pc(USBTX,USBRX);
00017 
00018 ESP8266 esp(PTC17, PTC16, 115200); // baud rate for wifi
00019 
00020 char snd[255],rcv[1000],snd_Data[255];           //snd= string used to send command to ESP 8266 wii and  rcv = string used to receive response from ESP8266 wifi module 
00021 
00022 void esp_initialize(void); // Function used to initialize ESP8266 wifi module 
00023 void esp_send(void);       // Function used to connect with thingspeak.com and update channel using ESP8266 wifi module 
00024 
00025 
00026 DigitalOut LedGreen(LED2); 
00027 
00028 //Serial connection to PC for output 
00029 //Serial pc(PTC17, PTC16); // serial comm on the FRDM board
00030 
00031 //wireless bluetooth connection to Android Device for output
00032 Serial blue(PTC15, PTC14);   
00033 
00034  
00035 //MFRC522    RfChip   (SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, MF_RESET); 
00036 MFRC522    RfChip   (PTD2, PTD3, PTD1, PTE25, PTD0); 
00037  
00038 int counter1 = 0;
00039 int counter2 = 0; 
00040  
00041 int main(void) { 
00042    
00043    blue.baud(9600);
00044    pc.baud(115200);
00045    pc.printf("Welcome to RFID Tag Reader Using FRDM K64F...\n\r");
00046    blue.printf("Welcome to RFID Tag Reader Uing FRDM K64F...\n\r");
00047    pc.printf("Bluetooth Enable\r\n");
00048    blue.printf("Bluetooth Enable\r\n");
00049    RfChip.PCD_Init();
00050    
00051    
00052     //pc.baud(115200);           // Baud rate used for communicating with Tera-term on PC
00053     
00054     pc.printf("START\r\n");  // Starting point
00055     
00056     esp_initialize();
00057    
00058     
00059  
00060    while (true) { 
00061      LedGreen = 1; 
00062  
00063      // Look for new cards 
00064      if ( ! RfChip.PICC_IsNewCardPresent()) 
00065      { 
00066        wait_ms(200); 
00067        continue; 
00068      } 
00069  
00070      // Select one of the cards 
00071      if ( ! RfChip.PICC_ReadCardSerial()) 
00072      { 
00073        wait_ms(200); 
00074        continue; 
00075      } 
00076       LedGreen = 0;
00077       int a=0; 
00078  
00079      // Print Card UID 
00080      pc.printf("Card UID:"); 
00081      blue.printf("Card UID:");
00082      for (uint8_t i = 0; i < RfChip.uid.size; i++) 
00083      { 
00084       pc.printf(" %X02 ", RfChip.uid.uidByte[i]);
00085       blue.printf(" %X02 ", RfChip.uid.uidByte[i]);
00086       a = RfChip.uid.uidByte[0];
00087      }  
00088      printf("%d",a);
00089      
00090      //Print Card Type
00091     if(a==73)
00092     { 
00093     if(counter1 == 0){
00094          pc.printf("\r\nMilk is in the fridge");
00095          blue.printf("\r\nMilk is in the fridge");
00096          counter1 = 1;
00097      }
00098      else if(counter1 == 1){
00099          pc.printf("\r\nMilk is out of the fridge");
00100          blue.printf("\r\nMilk is in out of the fridge");
00101          counter1 = 0;
00102          esp_send();
00103          }
00104      }
00105     
00106      if(a==207)
00107      {
00108     if (counter2 == 0)
00109     {
00110     printf("\r\nBeer is in the fridge");
00111     blue.printf("\r\nBeer is in the fridge");
00112     counter2 = 1;
00113     }
00114     else if (counter2 == 1){
00115     printf("\r\nBeer is out of the fridge");
00116     blue.printf("\r\nBeer is in out of the fridge");
00117     counter2 = 0;
00118     esp_send();
00119     }
00120     }
00121     //wait(1);
00122    //  else
00123    //  {
00124     //     printf("\r\nUnrecognized");
00125      //    blue.printf("\r\nUnrecognized");
00126      //}     
00127      printf("\n\r"); 
00128      blue.printf("\n\r"); 
00129      
00130      // Print RFID Card type 
00131      uint8_t piccType = RfChip.PICC_GetType(RfChip.uid.sak); 
00132      printf("PICC Type: %s \n\n\r\r", RfChip.PICC_GetTypeName(piccType));
00133      blue.printf("PICC Type: %s \n\n\r\r", RfChip.PICC_GetTypeName(piccType));
00134      
00135      wait(2);
00136      
00137    } 
00138  } 
00139  void esp_initialize(void)
00140 {    
00141     pc.printf("Initializing ESP\r\n"); 
00142       
00143     pc.printf("Reset ESP\r\n"); 
00144     esp.Reset();                   //RESET ESP
00145     esp.RcvReply(rcv, 400);        //receive a response from ESP
00146     //pc.printf(rcv);          //Print the response onscreen 
00147     wait(2);
00148     
00149     strcpy(snd,"AT");
00150     esp.SendCMD(snd);
00151     pc.printf(snd);
00152     //wait(2);
00153     esp.RcvReply(rcv, 400);       
00154     pc.printf(rcv);      
00155     wait(0.1);
00156     
00157     strcpy(snd,"AT+CWMODE=1");
00158     esp.SendCMD(snd);
00159     pc.printf(snd);
00160     wait(2);
00161 
00162     strcpy(snd,"AT+CWJAP=\"");
00163     strcat(snd,WIFI_SSID);
00164     strcat(snd,"\",\"");
00165     strcat(snd,WIFI_PASS);
00166     strcat(snd,"\"");
00167     
00168     esp.SendCMD(snd);
00169     pc.printf(snd);
00170     wait(5);
00171     esp.RcvReply(rcv, 400);       
00172     pc.printf("\n %s \n", rcv); 
00173     
00174     strcpy(snd,"AT+CIPMUX=0");
00175     esp.SendCMD(snd);
00176     pc.printf(snd);
00177     //wait(2);
00178     esp.RcvReply(rcv, 400);       
00179     pc.printf("\n %s \n", rcv); 
00180 
00181 }
00182 
00183 
00184 void esp_send(void)
00185 {
00186    
00187     //ESP updates the Status of Thingspeak channel//
00188     
00189     strcpy(snd,"AT+CIPSTART=");
00190     strcat(snd,"\"TCP\",\"");
00191     strcat(snd,IP);
00192     strcat(snd,"\",80");
00193     
00194     esp.SendCMD(snd); 
00195     pc.printf("S\r\n%s",snd);
00196     //wait(2);                                                    
00197     esp.RcvReply(rcv, 1000);
00198     pc.printf("R\r\n%s",rcv);
00199     wait(1);
00200     
00201     sprintf(snd,"GET https://api.thingspeak.com/update?key=XE2W5EIXWN6LA234&field1=%d&field2=%d\r\n",counter1,counter2);
00202     
00203     int i=0;
00204     for(i=0;snd[i]!='\0';i++);
00205     i++;
00206     char cmd[255];
00207     
00208     sprintf(cmd,"AT+CIPSEND=%d",i);                                       //Send Number of open connection and Characters to send 
00209     esp.SendCMD(cmd);
00210     pc.printf("S\r\n%s",cmd);
00211     while(i<=20 || rcv == ">")
00212     {
00213         esp.RcvReply(rcv, 1000);
00214         wait(100);
00215         i++;
00216     }
00217     pc.printf("R\r\n%s",rcv);
00218     
00219     esp.SendCMD(snd);                                                      //Post value to thingspeak channel
00220     pc.printf("S\r\n%s",snd);
00221     
00222     while(i<=20 || rcv == "OK")
00223     {
00224         esp.RcvReply(rcv, 1000);
00225         wait(100);
00226         i++;
00227     }
00228     pc.printf("R\r\n%s",rcv);
00229     
00230 }