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/stopwatch.h | 123 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 Marlin/src/libs/stopwatch.h

(limited to 'Marlin/src/libs/stopwatch.h')

diff --git a/Marlin/src/libs/stopwatch.h b/Marlin/src/libs/stopwatch.h
new file mode 100644
index 0000000..b64a36a
--- /dev/null
+++ b/Marlin/src/libs/stopwatch.h
@@ -0,0 +1,123 @@
+/**
+ * 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
+
+// Print debug messages with M111 S2 (Uses 156 bytes of PROGMEM)
+//#define DEBUG_STOPWATCH
+
+#include "../core/macros.h" // for FORCE_INLINE
+
+#include <stdint.h>
+typedef uint32_t millis_t;
+
+/**
+ * @brief Stopwatch class
+ * @details This class acts as a timer proving stopwatch functionality including
+ * the ability to pause the running time counter.
+ */
+class Stopwatch {
+  private:
+    enum State : char { STOPPED, RUNNING, PAUSED };
+
+    static Stopwatch::State state;
+    static millis_t accumulator;
+    static millis_t startTimestamp;
+    static millis_t stopTimestamp;
+
+  public:
+    /**
+     * @brief Initialize the stopwatch
+     */
+    FORCE_INLINE static void init() { reset(); }
+
+    /**
+     * @brief Stop the stopwatch
+     * @details Stop the running timer, it will silently ignore the request if
+     *          no timer is currently running.
+     * @return true on success
+     */
+    static bool stop();
+    static inline bool abort() { return stop(); } // Alias by default
+
+    /**
+     * @brief Pause the stopwatch
+     * @details Pause the running timer, it will silently ignore the request if
+     *          no timer is currently running.
+     * @return true on success
+     */
+    static bool pause();
+
+    /**
+     * @brief Start the stopwatch
+     * @details Start the timer, it will silently ignore the request if the
+     *          timer is already running.
+     * @return true on success
+     */
+    static bool start();
+
+    /**
+     * @brief Resume the stopwatch
+     * @details Resume a timer from a given duration
+     */
+    static void resume(const millis_t with_time);
+
+    /**
+     * @brief Reset the stopwatch
+     * @details Reset all settings to their default values.
+     */
+    static void reset();
+
+    /**
+     * @brief Check if the timer is running
+     * @details Return true if the timer is currently running, false otherwise.
+     * @return true if stopwatch is running
+     */
+    FORCE_INLINE static bool isRunning() { return state == RUNNING; }
+
+    /**
+     * @brief Check if the timer is paused
+     * @details Return true if the timer is currently paused, false otherwise.
+     * @return true if stopwatch is paused
+     */
+    FORCE_INLINE static bool isPaused() { return state == PAUSED; }
+
+    /**
+     * @brief Get the running time
+     * @details Return the total number of seconds the timer has been running.
+     * @return the delta since starting the stopwatch
+     */
+    static millis_t duration();
+
+    #ifdef DEBUG_STOPWATCH
+
+      /**
+       * @brief Print a debug message
+       * @details Print a simple debug message "Stopwatch::function"
+       */
+      static void debug(const char func[]);
+
+    #else
+
+      static inline void debug(const char[]) {}
+
+    #endif
+};
-- 
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