#include <SWSerialLCDPHA.h>

/*
* RFID Loop w/LCD Display and Piezo Sounder
* by Alexander Reeder, Nov 16, 2007
* Modified by Brian Riley  January 27, 2008
* Modified for Display and audible
*   Brian Riley  January 28, 2008
*/
                                                      
#define  LCDpin      14
#define RESETLEDPin  13
#define RESETPIN     2
#define MISSES       5000

SWSerialLCDPHA mySerial =  SWSerialLCDPHA(LCDpin);


char val = 0;
int  misscount  = MISSES;

void setup() {

  pinMode(LCDpin, OUTPUT);  // define pin modes for tx pin
  Serial.begin(9600);       // initialize UART
  mySerial.begin(19200);   // set the data rate for the SoftwareSerial port
  mySerial.clearscr();     // gets the SW Serial pump flowing
  mySerial.clearscr();     // cleans screen after whatever goop comes from startup
  mySerial.setgeo(216);    // set chip geometry for a 2x16 display
  mySerial.setintensity(0x80);  // set backlight at mx intensity

  pinMode(RESETPIN, OUTPUT);       // sets the digital pin as output
  pinMode(RESETLEDPin, OUTPUT);    // sets the digital pin as output
  misscount  = 0;

}

void loop () {

    char IDstring[13];
    int  i;

    digitalWrite(RESETLEDPin, LOW);  // Shut off LED
    digitalWrite(RESETPIN, HIGH);    // pull up Reset line   

    if (Serial.available() > 0 ) {
      if ( (val = Serial.read()) == 02 ) {      // look for Start Of Text marker
                                                // read until you get End Of Text
        for ( i = 0; (val = Serial.read()) != 03 ; i++) {
          IDstring[i] = val;
          Serial.print(val, HEX);
          Serial.print(" ");
        }
        Serial.println();
        IDstring[10] = 0x00;        // tie off IDstring at the CR-LF
        mySerial.print("?f ID=[");
        mySerial.print(IDstring);
        mySerial.print("]");    
        resetID12();                // reset after a valid read
        misscount = MISSES;
      }
    } else {          // basically this code lets you see the ID for about 5 seconds then
                      // replaces ID display with "waiting," 5000 1 ms loops, so if a new
                      // ID card is presented it chnages immediately to new ID display.
       if (misscount-- == 0) {
          mySerial.print("?f ... waiting ...");
       }
       delay(1);
    }
 
}

void resetID12()
{
        digitalWrite(RESETLEDPin, HIGH);   // show reset by lighting LED
        digitalWrite(RESETPIN, LOW);       // pull reset down
        delay(100);                        // hold reset for 100 ms
 
}