175 lines
6.8 KiB
C
175 lines
6.8 KiB
C
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2017.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.lufa-lib.org
|
|
*/
|
|
|
|
/*
|
|
Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
Permission to use, copy, modify, distribute, and sell this
|
|
software and its documentation for any purpose is hereby granted
|
|
without fee, provided that the above copyright notice appear in
|
|
all copies and that both that the copyright notice and this
|
|
permission notice and warranty disclaimer appear in supporting
|
|
documentation, and that the name of the author not be used in
|
|
advertising or publicity pertaining to distribution of the
|
|
software without specific, written prior permission.
|
|
|
|
The author disclaims all warranties with regard to this
|
|
software, including all implied warranties of merchantability
|
|
and fitness. In no event shall the author be liable for any
|
|
special, indirect or consequential damages or any damages
|
|
whatsoever resulting from loss of use, data or profits, whether
|
|
in an action of contract, negligence or other tortious action,
|
|
arising out of or in connection with the use or performance of
|
|
this software.
|
|
*/
|
|
|
|
/** \file
|
|
* \brief Interrupt Controller Driver for the AVR32 UC3 microcontrollers.
|
|
*
|
|
* Interrupt controller driver for the AVR32 UC3 microcontrollers, for the configuration of interrupt
|
|
* handlers within the device.
|
|
*/
|
|
|
|
/** \ingroup Group_PlatformDrivers_UC3
|
|
* \defgroup Group_PlatformDrivers_UC3Interrupts Interrupt Controller Driver - LUFA/Platform/UC3/InterruptManagement.h
|
|
* \brief Interrupt Controller Driver for the AVR32 UC3 microcontrollers.
|
|
*
|
|
* \section Sec_PlatformDrivers_UC3Interrupts_Dependencies Module Source Dependencies
|
|
* The following files must be built with any user project that uses this module:
|
|
* - LUFA/Platform/UC3/InterruptManagement.c <i>(Makefile source module name: LUFA_SRC_PLATFORM)</i>
|
|
* - LUFA/Platform/UC3/Exception.S <i>(Makefile source module name: LUFA_SRC_PLATFORM)</i>
|
|
*
|
|
* \section Sec_PlatformDrivers_UC3Interrupts_ModDescription Module Description
|
|
* Interrupt controller driver for the AVR32 UC3 microcontrollers, for the configuration of interrupt
|
|
* handlers within the device.
|
|
*
|
|
* Usage Example:
|
|
* \code
|
|
* #include <LUFA/Platform/UC3/InterruptManagement.h>
|
|
*
|
|
* ISR(USB_Group_IRQ_Handler)
|
|
* {
|
|
* // USB group handler code here
|
|
* }
|
|
*
|
|
* void main(void)
|
|
* {
|
|
* INTC_Init();
|
|
* INTC_RegisterGroupHandler(INTC_IRQ_GROUP(AVR32_USBB_IRQ), AVR32_INTC_INT0, USB_Group_IRQ_Handler);
|
|
* }
|
|
* \endcode
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _UC3_INTERRUPT_MANAGEMENT_H_
|
|
#define _UC3_INTERRUPT_MANAGEMENT_H_
|
|
|
|
/* Includes: */
|
|
#include "../../Common/Common.h"
|
|
|
|
/* Enable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Private Interface - For use in library only: */
|
|
#if !defined(__DOXYGEN__)
|
|
/* Type Defines: */
|
|
typedef void (*InterruptHandlerPtr_t)(void);
|
|
|
|
/* External Variables: */
|
|
#if defined(__INCLUDE_FROM_INTMANAGEMENT_C)
|
|
extern const void EVBA_Table;
|
|
#endif
|
|
extern InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS];
|
|
extern const uint32_t Autovector_Table[];
|
|
#endif
|
|
|
|
/* Public Interface - May be used in end-application: */
|
|
/* Macros: */
|
|
/** Converts a given interrupt index into its associated interrupt group.
|
|
*
|
|
* \param[in] IRQIndex Index of the interrupt request to convert.
|
|
*
|
|
* \return Interrupt group number associated with the interrupt index.
|
|
*/
|
|
#define INTC_IRQ_GROUP(IRQIndex) (IRQIndex / 32)
|
|
|
|
/** Converts a given interrupt index into its associated interrupt line.
|
|
*
|
|
* \param[in] IRQIndex Index of the interrupt request to convert.
|
|
*
|
|
* \return Interrupt line number associated with the interrupt index.
|
|
*/
|
|
#define INTC_IRQ_LINE(IRQIndex) (IRQIndex % 32)
|
|
|
|
/* Function Prototypes: */
|
|
/** Initializes the interrupt controller ready to handle interrupts. This must be called at the
|
|
* start of the user program before any interrupts are registered or enabled.
|
|
*/
|
|
void INTC_Init(void);
|
|
|
|
/** Retrieves the associated interrupt handler for the interrupt group currently being fired. This
|
|
* is called directly from the exception handler routine before dispatching to the ISR.
|
|
*
|
|
* \param[in] InterruptLevel Priority level of the interrupt.
|
|
*
|
|
* \return Pointer to the associated interrupt handler function, or NULL if no handler set.
|
|
*/
|
|
InterruptHandlerPtr_t INTC_GetInterruptHandler(const uint_reg_t InterruptLevel);
|
|
|
|
/* Inline Functions: */
|
|
/** Registers a handler for a given interrupt group. On the AVR32 UC3 devices, interrupts are grouped by
|
|
* peripheral. To save on SRAM used, a single ISR handles all interrupt lines within a single group - to
|
|
* determine the exact line that has interrupted within the group ISR handler, use \ref INTC_GetGroupInterrupts().
|
|
*
|
|
* If multiple interrupts with the same group are registered, the last registered handler will become the
|
|
* handler called for interrupts raised within that group.
|
|
*
|
|
* To obtain the group number of a specific interrupt index, use the \ref INTC_IRQ_GROUP() macro.
|
|
*
|
|
* \param[in] GroupNumber Group number of the interrupt group to register a handler for.
|
|
* \param[in] InterruptLevel Priority level for the specified interrupt, a \c AVR32_INTC_INT* mask.
|
|
* \param[in] Handler Address of the ISR handler for the interrupt group.
|
|
*/
|
|
static inline void INTC_RegisterGroupHandler(const uint16_t GroupNumber,
|
|
const uint8_t InterruptLevel,
|
|
const InterruptHandlerPtr_t Handler) ATTR_ALWAYS_INLINE;
|
|
static inline void INTC_RegisterGroupHandler(const uint16_t GroupNumber,
|
|
const uint8_t InterruptLevel,
|
|
const InterruptHandlerPtr_t Handler)
|
|
{
|
|
InterruptHandlers[GroupNumber] = Handler;
|
|
AVR32_INTC.ipr[GroupNumber] = Autovector_Table[InterruptLevel];
|
|
}
|
|
|
|
/** Retrieves the pending interrupts for a given interrupt group. The result of this function should be masked
|
|
* against interrupt request indexes converted to a request line number via the \ref INTC_IRQ_LINE() macro. To
|
|
* obtain the group number of a given interrupt request, use the \ref INTC_IRQ_GROUP() macro.
|
|
*
|
|
* \param[in] GroupNumber Group number of the interrupt group to check.
|
|
*
|
|
* \return Mask of pending interrupt lines for the given interrupt group.
|
|
*/
|
|
static inline uint_reg_t INTC_GetGroupInterrupts(const uint16_t GroupNumber) ATTR_ALWAYS_INLINE;
|
|
static inline uint_reg_t INTC_GetGroupInterrupts(const uint16_t GroupNumber)
|
|
{
|
|
return AVR32_INTC.irr[GroupNumber];
|
|
}
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/** @} */
|
|
|