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jeremybenn |
/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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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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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED 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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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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//------------------------------------------------------------------------------
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/// \unit
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///
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/// !Purpose
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///
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/// Methods and definitions for configuring interrupts.
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///
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/// !Usage
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///
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/// -# Configure an interrupt source using IRQ_ConfigureIT
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/// -# Enable or disable interrupt generation of a particular source with
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/// IRQ_EnableIT and IRQ_DisableIT.
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///
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/// \note Most of the time, peripheral interrupts must be also configured
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/// inside the peripheral itself.
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//------------------------------------------------------------------------------
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#ifndef IRQ_H
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#define IRQ_H
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//------------------------------------------------------------------------------
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// Headers
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//------------------------------------------------------------------------------
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#include <board.h>
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#if defined(cortexm3)
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#include <cmsis/core_cm3.h>
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#endif
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//------------------------------------------------------------------------------
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// Definitions
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//------------------------------------------------------------------------------
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#if defined(cortexm3)
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#ifdef __NVIC_PRIO_BITS
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#undef __NVIC_PRIO_BITS
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#define __NVIC_PRIO_BITS ((SCB->AIRCR & 0x700) >> 8)
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#endif
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#endif
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//------------------------------------------------------------------------------
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// Global functions
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//------------------------------------------------------------------------------
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extern void IRQ_ConfigureIT(unsigned int source,
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unsigned int mode, // mode for AIC, priority for NVIC
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void( *handler )( void )); // ISR
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extern void IRQ_EnableIT(unsigned int source);
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extern void IRQ_DisableIT(unsigned int source);
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#endif //#ifndef IRQ_H
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