Initial commit. Unusable Marlin 2.0.5.3 core without any custimization.

Marlin/src/HAL/STM32F1/watchdog.cpp

@@ -0,0 +1,59 @@
+/**
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * HAL for stm32duino.com based on Libmaple and compatible (STM32F1)
+ */
+
+#ifdef __STM32F1__
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(USE_WATCHDOG)
+
+#include <libmaple/iwdg.h>
+#include "watchdog.h"
+
+void HAL_watchdog_refresh() {
+  #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED)
+    TOGGLE(LED_PIN);  // heartbeat indicator
+  #endif
+  iwdg_feed();
+}
+
+void watchdogSetup() {
+  // do whatever. don't remove this function.
+}
+
+/**
+ * @brief  Initialized the independent hardware watchdog.
+ *
+ * @return No return
+ *
+ * @details The watchdog clock is 40Khz. We need a 4 seconds interval, so use a /256 preescaler and 625 reload value (counts down to 0)
+ */
+void watchdog_init() {
+  //iwdg_init(IWDG_PRE_256, STM32F1_WD_RELOAD);
+}
+
+#endif // USE_WATCHDOG
+#endif // __STM32F1__