From e8701195e66f2d27ffe17fb514eae8173795aaf7 Mon Sep 17 00:00:00 2001
From: Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com>
Date: Thu, 4 Mar 2021 22:54:23 +0500
Subject: Initial commit

---
 Marlin/src/libs/hex_print.cpp | 90 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 Marlin/src/libs/hex_print.cpp

(limited to 'Marlin/src/libs/hex_print.cpp')

diff --git a/Marlin/src/libs/hex_print.cpp b/Marlin/src/libs/hex_print.cpp
new file mode 100644
index 0000000..0f746d6
--- /dev/null
+++ b/Marlin/src/libs/hex_print.cpp
@@ -0,0 +1,90 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../inc/MarlinConfigPre.h"
+
+#if NEED_HEX_PRINT
+
+#include "hex_print.h"
+#include "../core/serial.h"
+
+#ifdef CPU_32_BIT
+  constexpr int byte_start = 4;
+  static char _hex[] = "0x00000000";
+#else
+  constexpr int byte_start = 0;
+  static char _hex[] = "0x0000";
+#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 + 4];
+}
+
+inline void _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);
+}
+
+char* hex_word(const uint16_t w) {
+  _hex_word(w);
+  return &_hex[byte_start + 2];
+}
+
+#ifdef CPU_32_BIT
+  char* hex_long(const uintptr_t l) {
+    _hex[2] = hex_nybble(l >> 28);
+    _hex[3] = hex_nybble(l >> 24);
+    _hex[4] = hex_nybble(l >> 20);
+    _hex[5] = hex_nybble(l >> 16);
+    _hex_word((uint16_t)(l & 0xFFFF));
+    return &_hex[2];
+  }
+#endif
+
+char* hex_address(const void * const w) {
+  #ifdef CPU_32_BIT
+    (void)hex_long((uintptr_t)w);
+  #else
+    (void)hex_word((uintptr_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)); }
+
+void print_hex_long(const uint32_t w, const char delimiter) {
+  SERIAL_ECHOPGM("0x");
+  for (int B = 24; B >= 8; B -= 8){
+    print_hex_byte(w >> B);
+    SERIAL_CHAR(delimiter);
+  }
+  print_hex_byte(w);
+}
+
+#endif // NEED_HEX_PRINT
-- 
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