Import Mbed OS hard-float snapshot

targets/TARGET_STM/reset_reason.c

@@ -0,0 +1,103 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2017 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "reset_reason_api.h"
+
+#ifdef DEVICE_RESET_REASON
+
+#include "device.h"
+
+reset_reason_t hal_reset_reason_get(void)
+{
+#ifdef RCC_FLAG_LPWRRST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_LPWRRST)) {
+        return RESET_REASON_WAKE_LOW_POWER;
+    }
+#endif
+
+#ifdef RCC_FLAG_LPWR1RST
+    if ((__HAL_RCC_GET_FLAG(RCC_FLAG_LPWR1RST)) || (__HAL_RCC_GET_FLAG(RCC_FLAG_LPWR2RST))) {
+        return RESET_REASON_WAKE_LOW_POWER;
+    }
+#endif
+
+#ifdef RCC_FLAG_WWDGRST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_WWDGRST)) {
+        return RESET_REASON_WATCHDOG;
+    }
+#endif
+
+#ifdef RCC_FLAG_WWDG1RST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_WWDG1RST)) {
+        return RESET_REASON_WATCHDOG;
+    }
+#endif
+
+#ifdef RCC_FLAG_IWDGRST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST)) {
+        return RESET_REASON_WATCHDOG;
+    }
+#endif
+
+#ifdef RCC_FLAG_IWDG1RST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDG1RST)) {
+        return RESET_REASON_WATCHDOG;
+    }
+#endif
+
+#ifdef RCC_FLAG_SFTRST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_SFTRST)) {
+        return RESET_REASON_SOFTWARE;
+    }
+#endif
+
+#ifdef RCC_FLAG_PORRST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_PORRST)) {
+        return RESET_REASON_POWER_ON;
+    }
+#endif
+
+#ifdef RCC_FLAG_BORRST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_BORRST)) {
+        return RESET_REASON_BROWN_OUT;
+    }
+#endif
+
+#ifdef RCC_FLAG_PINRST
+    if (__HAL_RCC_GET_FLAG(RCC_FLAG_PINRST)) {
+        return RESET_REASON_PIN_RESET;
+    }
+#endif
+
+    return RESET_REASON_UNKNOWN;
+}
+
+
+uint32_t hal_reset_reason_get_raw(void)
+{
+#if TARGET_STM32H7
+    return RCC->RSR;
+#else /* TARGET_STM32H7 */
+    return RCC->CSR;
+#endif /* TARGET_STM32H7 */
+}
+
+
+void hal_reset_reason_clear(void)
+{
+    __HAL_RCC_CLEAR_RESET_FLAGS();
+}
+
+#endif // DEVICE_RESET_REASON