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84 lines
3.3 KiB
84 lines
3.3 KiB
14 years ago
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2011.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#ifndef _INTERRUPT_MANAGEMENT_H_
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#define _INTERRUPT_MANAGEMENT_H_
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/* Includes: */
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#include <avr32/io.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <LUFA/Common/Common.h>
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/* Macros: */
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#if !defined(ISR)
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#define ISR(Name) void Name (void) __attribute__((__interrupt__)); void Name (void)
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#endif
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#define INTC_EnableInterrupts() do { GCC_MEMORY_BARRIER(); __builtin_csrf(AVR32_SR_GM_OFFSET); } while (0)
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#define INTC_DisableInterrupts() do { __builtin_ssrf(AVR32_SR_GM_OFFSET); GCC_MEMORY_BARRIER(); } while (0)
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/* Type Defines: */
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typedef void (*InterruptHandlerPtr_t)(void);
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/* External Variables: */
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extern const void EVBA_Table;
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extern const uint32_t Autovector_Table[];
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extern InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS];
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/* Function Prototypes: */
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void INTC_Init(void);
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/* Inline Functions: */
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/** Registers a handler for a given interrupt group. On the AVR32 UC3 devices, interrupts are grouped by
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* peripheral. To save on SRAM used, a single ISR handles all interrupt lines within a single group - to
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* determine the exact line that has interrupted within the group ISR handler, examine the module's interrupt
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* flag register bits.
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*
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* If multiple interrupts with the same group are registered, the last registered handler will become the
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* handler called for interrupts raised within that group.
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*
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* \param[in] InterruptRequest Interrupt request index for the given interrupt, a AVR32_*_IRQ mask.
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* \param[in] InterruptLevel Priority level for the specified interrupt, a AVR32_INTC_INT* mask.
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* \param[in] Handler Address of the ISR handler for the interrupt group.
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*/
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static inline void INTC_RegisterGroupHandler(const uint16_t InterruptRequest,
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const uint8_t InterruptLevel,
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const InterruptHandlerPtr_t Handler)
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{
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uint8_t InterruptGroup = (InterruptRequest >> 5);
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InterruptHandlers[InterruptGroup] = Handler;
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AVR32_INTC.ipr[InterruptGroup] = Autovector_Table[InterruptLevel];
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}
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#endif
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