#include <util/crc16.h>

void setup() {
  Serial.begin(9600);
  Serial.println("CRC16 test started.");
}

void loop() {
  byte data[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09 };
  
  unsigned int crc = 0;
  
  for (unsigned int i = 0; i < sizeof(data); i++)
  {
    crc = _crc16_update(crc, data[i]);
  }
  
  Serial.print("CRC16 = ");
  Serial.println(crc, HEX);
  Serial.println();
  
  delay(2000);
}