Marlin_Firmware/Marlin/src/libs/hex_print_routines.cpp

/**
 * Marlin 3D Printer Firmware
 * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
 *
 * Based on Sprinter and grbl.
 * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "../inc/MarlinConfig.h"

#if ENABLED(AUTO_BED_LEVELING_UBL) || ENABLED(M100_FREE_MEMORY_WATCHER) || ENABLED(DEBUG_GCODE_PARSER)

  #include "hex_print_routines.h"

  #ifdef CPU_32_BIT
    constexpr int byte_start = 0;
    static char _hex[] = "0x0000";
  #else
    constexpr int byte_start = 4;
    static char _hex[] = "0x00000000";
  #endif

  char* hex_byte(const uint8_t b) {
    _hex[byte_start + 4] = hex_nybble(b >> 4);
    _hex[byte_start + 5] = hex_nybble(b);
    return &_hex[byte_start];
  }

  char* hex_word(const uint16_t w) {
    _hex[byte_start + 2] = hex_nybble(w >> 12);
    _hex[byte_start + 3] = hex_nybble(w >> 8);
    _hex[byte_start + 4] = hex_nybble(w >> 4);
    _hex[byte_start + 5] = hex_nybble(w);
    return &_hex[byte_start - 2];
  }

  #ifdef CPU_32_BIT
    char* hex_long(const uint32_t w) {
      _hex[byte_start - 2] = hex_nybble(w >> 28);
      _hex[byte_start - 1] = hex_nybble(w >> 24);
      _hex[byte_start + 0] = hex_nybble(w >> 20);
      _hex[byte_start + 1] = hex_nybble(w >> 16);
      (void)hex_word((uint16_t)(w & 0xFFFF));
      return &_hex[byte_start - 6];
    }
  #endif

  char* hex_address(const void * const w) {
    #ifdef CPU_32_BIT
      (void)hex_long((ptr_int_t)w);
    #else
      (void)hex_word((ptr_int_t)w);
    #endif
    return _hex;
  }

  void print_hex_nybble(const uint8_t n)       { SERIAL_CHAR(hex_nybble(n));  }
  void print_hex_byte(const uint8_t b)         { SERIAL_ECHO(hex_byte(b));    }
  void print_hex_word(const uint16_t w)        { SERIAL_ECHO(hex_word(w));    }
  void print_hex_address(const void * const w) { SERIAL_ECHO(hex_address(w)); }

#endif // AUTO_BED_LEVELING_UBL || M100_FREE_MEMORY_WATCHER || DEBUG_GCODE_PARSER