--- /dev/null
+/*
+ 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
+
+/** @} */
+
projects / qmk_firmware.git / blobdiff