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authorDan Halbert <halbert@halwitz.org>2017-10-11 18:30:01 -0400
committerScott Shawcroft <scott@tannewt.org>2017-10-12 10:55:15 -0700
commitb7591cfd19d308091dc67ae698c112cdb52a044f (patch)
treee0138f82640a0e582baa87e6b041f497a8a5036c /atmel-samd/asf4/samd21/hal/include/hal_atomic.h
parent80654779e1ad98f5818186746e00b6b642dca3db (diff)
Replace asf4 tree with submodule repo adafruit/asf4, branch circuitpython.
Diffstat (limited to 'atmel-samd/asf4/samd21/hal/include/hal_atomic.h')
-rw-r--r--atmel-samd/asf4/samd21/hal/include/hal_atomic.h137
1 files changed, 0 insertions, 137 deletions
diff --git a/atmel-samd/asf4/samd21/hal/include/hal_atomic.h b/atmel-samd/asf4/samd21/hal/include/hal_atomic.h
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-/**
- * \file
- *
- * \brief Critical sections related functionality declaration.
- *
- * Copyright (C) 2014 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
- *
- */
-
-#ifndef _HAL_ATOMIC_H_INCLUDED
-#define _HAL_ATOMIC_H_INCLUDED
-
-#include <compiler.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/**
- * \addtogroup doc_driver_hal_helper_atomic
- *
- *@{
- */
-
-/**
- * \brief Type for the register holding global interrupt enable flag
- */
-typedef uint32_t hal_atomic_t;
-
-/**
- * \brief Helper macro for entering critical sections
- *
- * This macro is recommended to be used instead of a direct call
- * hal_enterCritical() function to enter critical
- * sections. No semicolon is required after the macro.
- *
- * \section atomic_usage Usage Example
- * \code
- * CRITICAL_SECTION_ENTER()
- * Critical code
- * CRITICAL_SECTION_LEAVE()
- * \endcode
- */
-#define CRITICAL_SECTION_ENTER() \
- { \
- volatile hal_atomic_t __atomic; \
- atomic_enter_critical(&__atomic);
-
-/**
- * \brief Helper macro for leaving critical sections
- *
- * This macro is recommended to be used instead of a direct call
- * hal_leaveCritical() function to leave critical
- * sections. No semicolon is required after the macro.
- *
- * \section atomic_usage Usage Example
- * \code
- * CRITICAL_SECTION_ENTER()
- * Some critical code
- * CRITICAL_SECTION_LEAVE()
- * \endcode
- */
-#define CRITICAL_SECTION_LEAVE() \
- atomic_leave_critical(&__atomic); \
- }
-
-/**
- * \brief Disable interrupts, enter critical section
- *
- * Disables global interrupts. Supports nested critical sections,
- * so that global interrupts are only re-enabled
- * upon leaving the outermost nested critical section.
- *
- * \param[out] atomic The pointer to a variable to store the value of global
- * interrupt enable flag
- */
-void atomic_enter_critical(hal_atomic_t volatile *atomic);
-
-/**
- * \brief Exit atomic section
- *
- * Enables global interrupts. Supports nested critical sections,
- * so that global interrupts are only re-enabled
- * upon leaving the outermost nested critical section.
- *
- * \param[in] atomic The pointer to a variable, which stores the latest stored
- * value of the global interrupt enable flag
- */
-void atomic_leave_critical(hal_atomic_t volatile *atomic);
-
-/**
- * \brief Retrieve the current driver version
- *
- * \return Current driver version.
- */
-uint32_t atomic_get_version(void);
-/**@}*/
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _HAL_ATOMIC_H_INCLUDED */