Diff: targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/system/reset/TARGET_SAMD21/reset.h

Revision:

18:da299f395b9e

Parent:

15:a81a8d6c1dfe

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/system/reset/TARGET_SAMD21/reset.h	Mon Nov 09 13:30:11 2015 +0000
@@ -0,0 +1,119 @@
+/**
+ * \file
+ *
+ * \brief SAM Reset related functionality
+ *
+ * Copyright (C) 2014-2015 Atmel Corporation. All rights reserved.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * 3. The name of Atmel may not be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * 4. This software may only be redistributed and used in connection with an
+ *    Atmel microcontroller product.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * \asf_license_stop
+ *
+ */
+/*
+ * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ */
+#ifndef RESET_H_INCLUDED
+#define RESET_H_INCLUDED
+
+#include <compiler.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * \addtogroup asfdoc_sam0_system_group
+ * @{
+ */
+
+/**
+ * \brief Reset causes of the system.
+ *
+ * List of possible reset causes of the system.
+ */
+enum system_reset_cause {
+    /** The system was last reset by a software reset. */
+    SYSTEM_RESET_CAUSE_SOFTWARE       = PM_RCAUSE_SYST,
+    /** The system was last reset by the watchdog timer. */
+    SYSTEM_RESET_CAUSE_WDT            = PM_RCAUSE_WDT,
+    /** The system was last reset because the external reset line was pulled low. */
+    SYSTEM_RESET_CAUSE_EXTERNAL_RESET = PM_RCAUSE_EXT,
+    /** The system was last reset by the BOD33. */
+    SYSTEM_RESET_CAUSE_BOD33          = PM_RCAUSE_BOD33,
+    /** The system was last reset by the BOD12. */
+    SYSTEM_RESET_CAUSE_BOD12          = PM_RCAUSE_BOD12,
+    /** The system was last reset by the POR (Power on reset). */
+    SYSTEM_RESET_CAUSE_POR            = PM_RCAUSE_POR,
+};
+
+
+/**
+ * \name Reset Control
+ * @{
+ */
+
+/**
+ * \brief Reset the MCU.
+ *
+ * Resets the MCU and all associated peripherals and registers, except RTC, all 32KHz sources,
+ * WDT (if ALWAYSON is set) and GCLK (if WRTLOCK is set).
+ *
+ */
+static inline void system_reset(void)
+{
+    NVIC_SystemReset();
+}
+
+/**
+ * \brief Return the reset cause.
+ *
+ * Retrieves the cause of the last system reset.
+ *
+ * \return An enum value indicating the cause of the last system reset.
+ */
+static inline enum system_reset_cause system_get_reset_cause(void)
+{
+    return (enum system_reset_cause)PM->RCAUSE.reg;
+}
+
+/**
+ * @}
+ */
+
+/** @} */
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* RESET_H_INCLUDED */