message_parsing.cpp

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

void loop() {
  // put your main code here, to run repeatedly:

  int result[6][2];
  parseMessage("881&11|900&22|950&33|975&44|1000&55|1071&66$", result);
  //Serial.println("test");
//  Serial.println(result[5][0]);
//  Serial.println(result[5][1]);
}

// 881-1071
void parseMessage(String msg, int result[6][2]) {
  int pipeDelimeter = msg.indexOf('|');
  int packetDelimeter = msg.indexOf('&');
  
  //String frequency = msg.substring(0, packetDelimeter);

  int index = 0;
  int previousPipeDelimeter = 0;
  int previousPacketDelimeter = 0;
  int frequency;
  int power;
  String debug = "";
  
  
  while (msg.indexOf('&', previousPacketDelimeter) != -1) {
    int packetDelimeter = msg.indexOf('&',previousPacketDelimeter);
    int pipeDelimeter = msg.indexOf('|', previousPipeDelimeter);
    
    debug = msg.substring(previousPipeDelimeter, packetDelimeter);
    //Serial.println(debug);
    
    frequency = debug.toInt();
    //Serial.println(frequency);
    
    debug = msg.substring(packetDelimeter+1, pipeDelimeter);
    //Serial.println(debug);

    power = debug.toInt();
    //Serial.println(power);

    result[index][0] = frequency;
    result[index][1] = power;

    previousPipeDelimeter = pipeDelimeter+1;
    previousPacketDelimeter = packetDelimeter+1;
    //Serial.println(index);
    index = index + 1;
  } 
  
}