#define rxPin   PORTF.B2
#define txPin   PORTF.B8
#define LED     PORTA.B2
#define LED2    PORTA.B3
#define LED3    PORTA.B5
#define Gomb    PORTA.B4

sbit LCD_RS at LATD12_bit;
sbit LCD_EN at LATD2_bit;
sbit LCD_D4 at LATD3_bit;
sbit LCD_D5 at LATD13_bit;
sbit LCD_D6 at LATD5_bit;
sbit LCD_D7 at LATD7_bit;

sbit LCD_RS_Direction at TRISD12_bit;
sbit LCD_EN_Direction at TRISD2_bit;
sbit LCD_D4_Direction at TRISD3_bit;
sbit LCD_D5_Direction at TRISD13_bit;
sbit LCD_D6_Direction at TRISD5_bit;
sbit LCD_D7_Direction at TRISD7_bit;



// RFID R/W Module Commands
// Number of bytes returned in ()
#define RFID_Read         0x01          // Read data from specified address, valid locations 1 to 33 (5)
#define RFID_Write          0x02          // Write data to specified address, valid locations 3 to 31 (1)
#define RFID_Login          0x03          // Login to tag with password (1)
#define RFID_SetPass      0x04          // Change tag's password from old to new (1)
#define RFID_Protect          0x05          // Enable/disable password protection (1)
#define RFID_Reset        0x06          // Reset tag (1)
#define RFID_ReadLegacy   0x0F          // Read unique ID from EM4102 read-only tag (for backwards compatibility with Parallax RFID Card Reader #28140) (12)

// Memory map/address locations for EM4x50 tag
// Each address holds/returns a 32-bit (4 byte) value
#define ADDR_Password     0          // Password (not readable)
#define ADDR_Protect          1          // Protection Word
#define ADDR_Control          2          // Control Word
// ADDR 3-31 are User EEPROM area
#define ADDR_Serial          32          // Device Serial Number
#define ADDR_DeviceID          33          // Device Identification

// Status/error return codes
#define ERR_OK                  0x01          // No errors
#define ERR_LIW                  0x02          // Did not find a listen window
#define ERR_NAK                  0x03          // Received a NAK, could be invalid command
#define ERR_NAK_OLDPW          0x04          // Received a NAK sending old password (RFID_SetPass), could be incorrect password
#define ERR_NAK_NEWPW          0x05          // Received a NAK sending new password (RFID_SetPass)
#define ERR_LIW_NEWPW          0x06          // Did not find a listen window after setting new password (RFID_SetPass)
#define ERR_PARITY          0x07          // Parity error when reading data

// For use with RFID_ReadLegacy command
#define LEGACY_StartByte  0x0A
#define LEGACY_StopByte   0x0D

void main() {
  int idx;
  char idd[16];
  int rfidData[32];                 //buffer for incoming data 12 bytes
  int a=0;
  CHECON = 0x32;
  AD1PCFG  = 0xFFFF;
  TRISD = 0x0000;
  LATD = 0x0000;
  TRISF.B8=0;                       //TX LÁB KIMENET
  TRISF.B2=1;                       //RX LÁB BEMENET
  TRISA.B2=0;                       //LED KIMENET
  TRISA.B3=0;                       //LED KIMENET
  TRISA.B5=0;                       //LED KIMENET
  TRISA.B4=1;                       //gomb
  LATA = 0x0000;
  LATF = 0x0000;
  
  Lcd_Init();                        // Initialize LCD
   
  UART1_Init(9600);                 //UART1 MODUL INIT
  delay_ms(100);
  UART2_Init(9600);                 //UART1 MODUL INIT
  delay_ms(100);
  
  Lcd_Cmd(_LCD_CLEAR);               // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);
  delay_ms(10);
  
  while (1) {                     // Endless loop
    if(Gomb){
      while(Gomb);
      UART1_Write_Text("!RW");
      LED=1;
      //delay_ms(10);
      while(UART1_Tx_Idle() == 0);
      /*delay_ms(200);
      LED=0;
      delay_ms(100);*/
      if (UART1_Tx_Idle() == 1) {
        UART1_Write(0x01);
        if (UART2_Data_Ready()){
          LED2=1;
        }
        LED=1;
      }
      while(UART1_Tx_Idle() == 0);
      delay_ms(1);
      LED2=0;
      delay_ms(1);
      if (UART1_Tx_Idle() == 1) {
        UART1_Write(0x01);
        if (UART2_Data_Ready()){
          LED2=1;
        }
        //LED2=1;
      }
      delay_ms(1);
      LED2=0;
    }

      //delay_ms(10);

    Lcd_Out(1,1,"ID: ");
    //while(!UART1_Data_Ready());
    if (UART1_Data_Ready()) {     // If data is received
      idx = UART1_Read();     // read the received data
      LED3=1;
      IntToStr(idx,idd);
      Lcd_Out(2,1,idd);
    }
     if (UART2_Data_Ready()){
          LED2=1;
     }
    

    Delay_ms(10);
    LED=0;
   // LED2=0;
    LED2=0;
    //UART1_Write_Text("!RW");
    delay_ms(1000);
    //Lcd_Cmd(_LCD_CLEAR);
  }

  
}