kopia lustrzana https://github.com/bristol-seds/pico-tracker
76 wiersze
2.5 KiB
C
76 wiersze
2.5 KiB
C
/**
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* Global interrupt management for SAM D20, SAM3 and SAM4 (NVIC based)
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*
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* Copyright (c) 2012-2014 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an
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* Atmel microcontroller product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* \asf_license_stop
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*
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*/
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#ifndef SYSTEM_INTERRUPT_H
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#define SYSTEM_INTERRUPT_H
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#include "samd20.h"
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/**
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* Registers an interupt with the NVIC
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*/
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#define irq_register_handler(int_num, int_prio) \
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do { \
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NVIC_ClearPendingIRQ((IRQn_Type)int_num); \
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NVIC_SetPriority( (IRQn_Type)int_num, int_prio); \
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NVIC_EnableIRQ( (IRQn_Type)int_num); \
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} while (0)
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/**
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* Safe global IRQ enable / disable
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*/
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#define cpu_irq_enable() \
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do { \
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__DMB(); \
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__enable_irq(); \
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} while (0)
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#define cpu_irq_disable() \
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do { \
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__disable_irq(); \
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__DMB(); \
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} while (0)
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#define cpu_irq_is_enabled() (__get_PRIMASK() == 0)
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void cpu_irq_enter_critical(void);
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void cpu_irq_leave_critical(void);
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#endif /* SYSTEM_INTERRUPT_H */
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