1. kode


#include <SoftwareSerial.h>
SoftwareSerial arduino(2, 3);

int i;
char reader[10];

void setup() {
  // put your setup code here, to run once:
  pinMode(13, OUTPUT);
  Serial.begin(9600);
  arduino.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  reader[0] = arduino.read();

  if (reader[0] == 'A') {
    for (i = 1; i < 10; i++) {
      reader[i] = arduino.read();

      delay(2);
      Serial.print(reader[i]);
    }
    Serial.println("done");
  }
  if (Serial.available() > 1) {
    for (i = 1; i < 10; i++) {
      reader[i] = Serial.read();
      delay(20);
    }
  }
  if(reader[0] =='1'&&reader[1]=='O'&&reader[2]=='N') 			//[0] = første tegn, [1] = andet tegn osv..
  digitalWrite(13, HIGH);

  if(reader[0] =='1'&&reader[1]=='O'&&reader[2]=='F'&&reader[3]=='F')
  digitalWrite(13, LOW);

  if(reader[0] =='2'&&reader[1]=='O'&&reader[2]=='N')
  arduino.print("2ON");

  if(reader[0] =='2'&&reader[1]=='O'&&reader[2]=='F'&&reader[3]=='F')
  arduino.print("2OFF");

  if(reader[0] =='A'&&reader[1]=='O'&&reader[2]=='N')
  arduino.println("LED ON ARDUINO 2 IS ON");

  if(reader[0] =='A'&&reader[1]=='O'&&reader[2]=='F'&&reader[3]=='F')
  arduino.println("LED ON ARDUINO 2 IS OFF");

  for(i=0; i<10; i++)
  reader[i]=0;
}