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mbed 2
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Diff: TARGET_SAMD21G18A/TOOLCHAIN_ARM_STD/reset.h
- Revision:
- 171:3a7713b1edbc
- Parent:
- 165:d1b4690b3f8b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_SAMD21G18A/TOOLCHAIN_ARM_STD/reset.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,107 @@ +/** + * \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 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 */