RFID Reader

rfid_reader.ino

#include <SoftwareSerial.h>

SoftwareSerial rfid(9,11);
SoftwareSerial wire(2,3);

int SerialResetPIN = 6;
int SerialSleepPIN = 7;
int RFIDResetPin = 10;

void setup() { 
  Serial.begin(9600);
  wire.begin(9600);
  rfid.begin(9600);
  
  pinMode(SerialResetPIN, OUTPUT);
  pinMode(SerialSleepPIN, OUTPUT);
  pinMode(RFIDResetPin, OUTPUT);
  
  digitalWrite(RFIDResetPin, HIGH);
  digitalWrite(SerialResetPIN, HIGH);
  digitalWrite(SerialSleepPIN, LOW);
}

void loop() {
  char tagString[13];
  int index = 0;
  boolean reading = false;
  
  while(rfid.available()) {
    int readByte = rfid.read();
    
    if(readByte == 2) reading = true;
    if(readByte == 3) reading = false;
    
    if(reading && readByte != 2 && readByte != 10 && readByte != 13) {
      tagString[index] = readByte;
      index ++;
    }

  }
  checkTag(tagString);
  clearTag(tagString);
  resetReader();
}

void checkTag(char tag[]) {
  if(strlen(tag) == 0) return;
 
  Serial.println(tag);
  wire.write(tag);
}

void clearTag(char one[]) {
    for(int i = 0; i < strlen(one); i++){
    one[i] = 0;
  }
}

void resetReader() {
  digitalWrite(RFIDResetPin, LOW);
  digitalWrite(RFIDResetPin, HIGH);
  delay(1000); 
}