1 files changed, 106 insertions, 0 deletions
diff --git a/Marlin/src/libs/stopwatch.cpp b/Marlin/src/libs/stopwatch.cpp
new file mode 100644
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--- /dev/null
+++ b/Marlin/src/libs/stopwatch.cpp
@@ -0,0 +1,106 @@
+/**
+ * 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 "stopwatch.h"
+
+#include "../inc/MarlinConfig.h"
+
+#if ENABLED(EXTENSIBLE_UI)
+  #include "../lcd/extui/ui_api.h"
+#endif
+
+Stopwatch::State Stopwatch::state;
+millis_t Stopwatch::accumulator;
+millis_t Stopwatch::startTimestamp;
+millis_t Stopwatch::stopTimestamp;
+
+bool Stopwatch::stop() {
+  Stopwatch::debug(PSTR("stop"));
+
+  if (isRunning() || isPaused()) {
+    TERN_(EXTENSIBLE_UI, ExtUI::onPrintTimerStopped());
+    state = STOPPED;
+    stopTimestamp = millis();
+    return true;
+  }
+  else return false;
+}
+
+bool Stopwatch::pause() {
+  Stopwatch::debug(PSTR("pause"));
+
+  if (isRunning()) {
+    TERN_(EXTENSIBLE_UI, ExtUI::onPrintTimerPaused());
+    state = PAUSED;
+    stopTimestamp = millis();
+    return true;
+  }
+  else return false;
+}
+
+bool Stopwatch::start() {
+  Stopwatch::debug(PSTR("start"));
+
+  TERN_(EXTENSIBLE_UI, ExtUI::onPrintTimerStarted());
+
+  if (!isRunning()) {
+    if (isPaused()) accumulator = duration();
+    else reset();
+
+    state = RUNNING;
+    startTimestamp = millis();
+    return true;
+  }
+  else return false;
+}
+
+void Stopwatch::resume(const millis_t with_time) {
+  Stopwatch::debug(PSTR("resume"));
+
+  reset();
+  if ((accumulator = with_time)) state = RUNNING;
+}
+
+void Stopwatch::reset() {
+  Stopwatch::debug(PSTR("reset"));
+
+  state = STOPPED;
+  startTimestamp = 0;
+  stopTimestamp = 0;
+  accumulator = 0;
+}
+
+millis_t Stopwatch::duration() {
+  return accumulator + MS_TO_SEC((isRunning() ? millis() : stopTimestamp) - startTimestamp);
+}
+
+#if ENABLED(DEBUG_STOPWATCH)
+
+  void Stopwatch::debug(const char func[]) {
+    if (DEBUGGING(INFO)) {
+      SERIAL_ECHOPGM("Stopwatch::");
+      serialprintPGM(func);
+      SERIAL_ECHOLNPGM("()");
+    }
+  }
+
+#endif