Function hex

libraries/printHelpers/printHelpers.cpp:343–356

/////////////////////////////////////////////////////// HEX always leading zero's - no prefix - no separator

//
//  always leading zero's - no prefix - no separator
char * hex(uint64_t value, uint8_t digits)
{
  uint64_t val = value;
  char * buffer = __printbuffer;
  buffer[digits] = '\0';
  while (digits > 0)
  {
    uint8_t v = val & 0x0F;
    val >>= 4;
    digits--;
    buffer[digits] = (v < 10) ? '0' + v : ('A' - 10) + v;
  }
  return buffer;
}

//  faster than 64 bit.
char * hex(uint32_t value, uint8_t digits)