 
 
 
-
+

 */
char toHexHigh( uint8_t h ) {
  h = h>>4;
  if( h > 9) return 'A' + (h-9);

  return '0' + h;
}

 */
char toHexLow( uint8_t h ) {
  h = h & 0x0f;
  if( h > 9) return 'A' + (h-10);

  return '0' + h;
}
