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/core/utility.h | 79 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Marlin/src/core/utility.h

(limited to 'Marlin/src/core/utility.h')

diff --git a/Marlin/src/core/utility.h b/Marlin/src/core/utility.h
new file mode 100644
index 0000000..645a4be
--- /dev/null
+++ b/Marlin/src/core/utility.h
@@ -0,0 +1,79 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once
+
+#include "../inc/MarlinConfigPre.h"
+#include "../core/types.h"
+#include "../core/millis_t.h"
+
+// Delay that ensures heaters and watchdog are kept alive
+void safe_delay(millis_t ms);
+
+#if ENABLED(SERIAL_OVERRUN_PROTECTION)
+  void serial_delay(const millis_t ms);
+#else
+  inline void serial_delay(const millis_t) {}
+#endif
+
+#if GRID_MAX_POINTS_X && GRID_MAX_POINTS_Y
+
+  // 16x16 bit arrays
+  template <int W, int H>
+  struct FlagBits {
+    typename IF<(W>8), uint16_t, uint8_t>::type bits[H];
+    void fill()                                   { memset(bits, 0xFF, sizeof(bits)); }
+    void reset()                                  { memset(bits, 0x00, sizeof(bits)); }
+    void unmark(const uint8_t x, const uint8_t y) { CBI(bits[y], x); }
+    void mark(const uint8_t x, const uint8_t y)   { SBI(bits[y], x); }
+    bool marked(const uint8_t x, const uint8_t y) { return TEST(bits[y], x); }
+    inline void unmark(const xy_int8_t &xy)       { unmark(xy.x, xy.y); }
+    inline void mark(const xy_int8_t &xy)         { mark(xy.x, xy.y); }
+    inline bool marked(const xy_int8_t &xy)       { return marked(xy.x, xy.y); }
+  };
+
+  typedef FlagBits<GRID_MAX_POINTS_X, GRID_MAX_POINTS_Y> MeshFlags;
+
+#endif
+
+#if ENABLED(DEBUG_LEVELING_FEATURE)
+  void log_machine_info();
+#else
+  #define log_machine_info() NOOP
+#endif
+
+template<typename T>
+class restorer {
+  T& ref_;
+  T  val_;
+public:
+  restorer(T& perm) : ref_(perm), val_(perm) {}
+  restorer(T& perm, T temp_val) : ref_(perm), val_(perm) { perm = temp_val; }
+  ~restorer() { restore(); }
+  inline void restore() { ref_ = val_; }
+};
+
+#define REMEMBER(N,X,V...) restorer<__typeof__(X)> restorer_##N(X, ##V)
+#define RESTORE(N) restorer_##N.restore()
+
+// Converts from an uint8_t in the range of 0-255 to an uint8_t
+// in the range 0-100 while avoiding rounding artifacts
+constexpr uint8_t ui8_to_percent(const uint8_t i) { return (int(i) * 100 + 127) / 255; }
-- 
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