Страница 15

void loop() {

  val = analogRead(SENSOR); // read the value from the sensor

  Serial.println(val); // print the value to

                            // the serial port

if (Serial.available() >0) {

  // read the incoming byte:

  inByte = Serial.read();

  // If the marker's found, next 6 characters are the colour

  if (inByte == '#') {

    while (pointer < 6) { // accumulate 6 chars

      buffer[pointer] = Serial.read(); // store in the buffer

      pointer++; // move the pointer forward by 1

    }

      // now we have the 3 numbers stored as hex numbers

      // we need to decode them into 3 bytes r, g and b

      r = hex2dec(buffer[1]) + hex2dec(buffer[0]) * 16;

      g = hex2dec(buffer[3]) + hex2dec(buffer[2]) * 16;

      b = hex2dec(buffer[5]) + hex2dec(buffer[4]) * 16;

      pointer = 0; // reset the pointer so we can reuse the buffer

    }