Nova versió 2013

Gener 2013.

Nova vesió amb Arduino UNO i nou lector sense escut Xbee.

Nou frimware.

// Basat en ArduinoBoard de Rai and Mike McKenzie
//============================================================================

//#include <Wire.h>
char rfid[12];
int pos=0;
void ScratchBoardSensorReport(int sensor, int value)
{
  Serial.write( B10000000
    | ((sensor & B1111)<<3)
    | ((value>>7) & B111));
  Serial.write( value & B1111111);
}

void setup()
{
  Serial.begin(9600);
  pinMode(4, INPUT);
}

int map3a1(char a, char b, char c){
  int val = 255*hexVal(a) + hexVal(b)*16 + hexVal(c);
  return map(val, 0, 4095, 0, 1023); // Passem de 4k a 1k perdent precisi´
}

int hexVal(char c){
  char ret = 0;
  if((c >= '0') && (c <= '9')){
    ret = c - '0';
  }else if((c >= 'A') && (c <= 'F')){
    ret = c - 'A' + 10;
  }
  return ret;
}

void loop()
{
  //Si hi ha dades RFID...
  if(Serial.available())
  {
    while(Serial.available()){
      delay(10);
      char c = (char)Serial.read();
      if( ((int)c >= 48) && ((int)c <=70)){
        rfid[pos]=c;
        pos++;
      }
      if(pos == 12){
       break;
      }
    }
    //Cal comprovar que i==12
    if(pos == 12){     
      pos = 0;
      Serial.end();
      Serial.begin(38400);
      ScratchBoardSensorReport(0, map3a1(rfid[0],rfid[1],rfid[2]));
      ScratchBoardSensorReport(1, map3a1(rfid[3],rfid[4],rfid[5]));
      ScratchBoardSensorReport(2, map3a1(rfid[6],rfid[7],rfid[8]));
      ScratchBoardSensorReport(3, map3a1(rfid[9],rfid[10],rfid[11]));
      ScratchBoardSensorReport(4, 0);
      ScratchBoardSensorReport(5, 0);
      ScratchBoardSensorReport(6, 0);
      ScratchBoardSensorReport(7, digitalRead(4)?1023:0);
      tone(11,4000,200); 
      delay(1000);
      ScratchBoardSensorReport(0, 0);
      ScratchBoardSensorReport(1, 0);
      ScratchBoardSensorReport(2, 0);
      ScratchBoardSensorReport(3, 0);
      delay(30);
      Serial.end();
      Serial.begin(9600);
    }
  }
  // Let Scratch catch up with us
  delay(30);
}