// Params for width and height
const uint8_t kMatrixWidth = 10;
const uint8_t kMatrixHeight = 5;

#define NUM_LEDS (kMatrixWidth * kMatrixHeight)

// Param for different pixel layouts
const bool    kMatrixSerpentineLayout = true;

uint8_t row[NUM_LEDS];
uint8_t column[NUM_LEDS];

uint8_t findRow(uint8_t n)
{
  row[n] = n / kMatrixWidth;
  return row[n];
}


uint8_t findColumn(uint8_t n)
{

  if ( kMatrixSerpentineLayout == false) {
    column[n] = (n - (kMatrixWidth * (n / kMatrixWidth)));
  }

  if ( kMatrixSerpentineLayout == true) {
    if ( (n / kMatrixWidth) & 0x01) {

      // Odd rows run backwards
      column[n] = (kMatrixWidth - 1) - (n - (kMatrixWidth * (n / kMatrixWidth)));

    } else {
      // Even rows run forwards
      column[n] = (n - (kMatrixWidth * (n / kMatrixWidth)));
    }
  }

  return column[n];
}

void setup() {

  delay(3000);
  Serial.begin(9600);
  while (!Serial);


  //Print labels

  Serial.print("LED");
  Serial.print("\t");

  Serial.print("ROW");
  Serial.print("\t");

  Serial.print("COLUMN");
  Serial.println("\t");


  for ( uint8_t n = 0; n < NUM_LEDS; n++) {

    findRow(n);
    findColumn(n);

    Serial.print(n);
    Serial.print("\t");

    Serial.print(row[n]);
    Serial.print("\t");

    Serial.print(column[n]);
    Serial.println("\t");
  }
}

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

}