diff options
Diffstat (limited to 'LUFA/Platform/UC3')
| -rw-r--r-- | LUFA/Platform/UC3/ClockManagement.h | 338 | ||||
| -rw-r--r-- | LUFA/Platform/UC3/Exception.S | 128 | ||||
| -rw-r--r-- | LUFA/Platform/UC3/InterruptManagement.c | 62 | ||||
| -rw-r--r-- | LUFA/Platform/UC3/InterruptManagement.h | 174 | ||||
| -rw-r--r-- | LUFA/Platform/UC3/UC3ExperimentalInfo.txt | 1 |
5 files changed, 703 insertions, 0 deletions
diff --git a/LUFA/Platform/UC3/ClockManagement.h b/LUFA/Platform/UC3/ClockManagement.h new file mode 100644 index 0000000000..5f286d51d5 --- /dev/null +++ b/LUFA/Platform/UC3/ClockManagement.h @@ -0,0 +1,338 @@ +/* + 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 Module Clock Driver for the AVR32 UC3 microcontrollers. + * + * Clock management driver for the AVR32 UC3 microcontrollers. This driver allows for the configuration + * of the various clocks within the device to clock the various peripherals. + */ + +/** \ingroup Group_PlatformDrivers_UC3 + * \defgroup Group_PlatformDrivers_UC3Clocks Clock Management Driver - LUFA/Platform/UC3/ClockManagement.h + * \brief Module Clock Driver for the AVR32 UC3 microcontrollers. + * + * \section Sec_PlatformDrivers_UC3Clocks_Dependencies Module Source Dependencies + * The following files must be built with any user project that uses this module: + * - None + * + * \section Sec_PlatformDrivers_UC3Clocks_ModDescription Module Description + * Clock management driver for the AVR32 UC3 microcontrollers. This driver allows for the configuration + * of the various clocks within the device to clock the various peripherals. + * + * Usage Example: + * \code + * #include <LUFA/Platform/UC3/ClockManagement.h> + * + * void main(void) + * { + * // Start the master external oscillator which will be used as the main clock reference + * UC3CLK_StartExternalOscillator(0, EXOSC_MODE_8MHZ_OR_MORE, EXOSC_START_0CLK); + * + * // Start the PLL for the CPU clock, switch CPU to it + * UC3CLK_StartPLL(0, CLOCK_SRC_OSC0, 12000000, F_CPU); + * UC3CLK_SetCPUClockSource(CLOCK_SRC_PLL0, F_CPU); + * + * // Start the PLL for the USB Generic Clock module + * UC3CLK_StartPLL(1, CLOCK_SRC_OSC0, 12000000, 48000000); + * } + * \endcode + * + * @{ + */ + +#ifndef _UC3_CLOCK_MANAGEMENT_H_ +#define _UC3_CLOCK_MANAGEMENT_H_ + + /* Includes: */ + #include "../../Common/Common.h" + + /* Enable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + extern "C" { + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + /** Enum for the possible external oscillator types. */ + enum UC3_Extern_OSC_ClockTypes_t + { + EXOSC_MODE_CLOCK = AVR32_PM_OSCCTRL0_MODE_EXT_CLOCK, /**< External clock (non-crystal) mode. */ + EXOSC_MODE_900KHZ_MAX = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G0, /**< External crystal oscillator equal to or slower than 900KHz. */ + EXOSC_MODE_3MHZ_MAX = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G1, /**< External crystal oscillator equal to or slower than 3MHz. */ + EXOSC_MODE_8MHZ_MAX = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G2, /**< External crystal oscillator equal to or slower than 8MHz. */ + EXOSC_MODE_8MHZ_OR_MORE = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G3, /**< External crystal oscillator equal to or faster than 8MHz. */ + }; + + /** Enum for the possible external oscillator startup times. */ + enum UC3_Extern_OSC_ClockStartup_t + { + EXOSC_START_0CLK = AVR32_PM_OSCCTRL0_STARTUP_0_RCOSC, /**< Immediate startup, no delay. */ + EXOSC_START_64CLK = AVR32_PM_OSCCTRL0_STARTUP_64_RCOSC, /**< Wait 64 clock cycles before startup for stability. */ + EXOSC_START_128CLK = AVR32_PM_OSCCTRL0_STARTUP_128_RCOSC, /**< Wait 128 clock cycles before startup for stability. */ + EXOSC_START_2048CLK = AVR32_PM_OSCCTRL0_STARTUP_2048_RCOSC, /**< Wait 2048 clock cycles before startup for stability. */ + EXOSC_START_4096CLK = AVR32_PM_OSCCTRL0_STARTUP_4096_RCOSC, /**< Wait 4096 clock cycles before startup for stability. */ + EXOSC_START_8192CLK = AVR32_PM_OSCCTRL0_STARTUP_8192_RCOSC, /**< Wait 8192 clock cycles before startup for stability. */ + EXOSC_START_16384CLK = AVR32_PM_OSCCTRL0_STARTUP_16384_RCOSC, /**< Wait 16384 clock cycles before startup for stability. */ + }; + + /** Enum for the possible module clock sources. */ + enum UC3_System_ClockSource_t + { + CLOCK_SRC_SLOW_CLK = 0, /**< Clock sourced from the internal slow clock. */ + CLOCK_SRC_OSC0 = 1, /**< Clock sourced from the Oscillator 0 clock. */ + CLOCK_SRC_OSC1 = 2, /**< Clock sourced from the Oscillator 1 clock. */ + CLOCK_SRC_PLL0 = 3, /**< Clock sourced from the PLL 0 clock. */ + CLOCK_SRC_PLL1 = 4, /**< Clock sourced from the PLL 1 clock. */ + }; + + /* Inline Functions: */ + /** Starts the given external oscillator of the UC3 microcontroller, with the given options. This routine blocks until + * the oscillator is ready for use. + * + * \param[in] Channel Index of the external oscillator to start. + * \param[in] Type Type of clock attached to the given oscillator channel, a value from \ref UC3_Extern_OSC_ClockTypes_t. + * \param[in] Startup Startup time of the external oscillator, a value from \ref UC3_Extern_OSC_ClockStartup_t. + * + * \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified. + */ + static inline bool UC3CLK_StartExternalOscillator(const uint8_t Channel, + const uint8_t Type, + const uint8_t Startup) ATTR_ALWAYS_INLINE; + static inline bool UC3CLK_StartExternalOscillator(const uint8_t Channel, + const uint8_t Type, + const uint8_t Startup) + { + switch (Channel) + { + case 0: + AVR32_PM.OSCCTRL0.startup = Startup; + AVR32_PM.OSCCTRL0.mode = Type; + break; + case 1: + AVR32_PM.OSCCTRL1.startup = Startup; + AVR32_PM.OSCCTRL1.mode = Type; + break; + default: + return false; + } + + AVR32_PM.mcctrl |= (1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel)); + + while (!(AVR32_PM.poscsr & (1 << (AVR32_PM_POSCSR_OSC0RDY_OFFSET + Channel)))); + return true; + } + + /** Stops the given external oscillator of the UC3 microcontroller. + * + * \param[in] Channel Index of the external oscillator to stop. + */ + static inline void UC3CLK_StopExternalOscillator(const uint8_t Channel) ATTR_ALWAYS_INLINE; + static inline void UC3CLK_StopExternalOscillator(const uint8_t Channel) + { + AVR32_PM.mcctrl &= ~(1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel)); + } + + /** Starts the given PLL of the UC3 microcontroller, with the given options. This routine blocks until the PLL is ready for use. + * + * \attention The output frequency must be equal to or greater than the source frequency. + * + * \param[in] Channel Index of the PLL to start. + * \param[in] Source Clock source for the PLL, a value from \ref UC3_System_ClockSource_t. + * \param[in] SourceFreq Frequency of the PLL's clock source, in Hz. + * \param[in] Frequency Target frequency of the PLL's output. + * + * \return Boolean \c true if the PLL was successfully started, \c false if invalid parameters specified. + */ + static inline bool UC3CLK_StartPLL(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) ATTR_ALWAYS_INLINE; + static inline bool UC3CLK_StartPLL(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) + { + if (SourceFreq > Frequency) + return false; + + switch (Source) + { + case CLOCK_SRC_OSC0: + AVR32_PM.PLL[Channel].pllosc = 0; + break; + case CLOCK_SRC_OSC1: + AVR32_PM.PLL[Channel].pllosc = 1; + break; + default: + return false; + } + + AVR32_PM.PLL[Channel].pllmul = (Frequency / SourceFreq) ? (((Frequency / SourceFreq) - 1) / 2) : 0; + AVR32_PM.PLL[Channel].plldiv = 0; + AVR32_PM.PLL[Channel].pllen = true; + + while (!(AVR32_PM.poscsr & (1 << (AVR32_PM_POSCSR_LOCK0_OFFSET + Channel)))); + return true; + } + + /** Stops the given PLL of the UC3 microcontroller. + * + * \param[in] Channel Index of the PLL to stop. + */ + static inline void UC3CLK_StopPLL(const uint8_t Channel) ATTR_ALWAYS_INLINE; + static inline void UC3CLK_StopPLL(const uint8_t Channel) + { + AVR32_PM.PLL[Channel].pllen = false; + } + + /** Starts the given Generic Clock of the UC3 microcontroller, with the given options. + * + * \param[in] Channel Index of the Generic Clock to start. + * \param[in] Source Clock source for the Generic Clock, a value from \ref UC3_System_ClockSource_t. + * \param[in] SourceFreq Frequency of the Generic Clock's clock source, in Hz. + * \param[in] Frequency Target frequency of the Generic Clock's output. + * + * \return Boolean \c true if the Generic Clock was successfully started, \c false if invalid parameters specified. + */ + static inline bool UC3CLK_StartGenericClock(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) ATTR_ALWAYS_INLINE; + static inline bool UC3CLK_StartGenericClock(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) + { + if (Channel >= AVR32_PM_GCLK_NUM) + return false; + + if (SourceFreq < Frequency) + return false; + + switch (Source) + { + case CLOCK_SRC_OSC0: + AVR32_PM.GCCTRL[Channel].pllsel = false; + AVR32_PM.GCCTRL[Channel].oscsel = 0; + break; + case CLOCK_SRC_OSC1: + AVR32_PM.GCCTRL[Channel].pllsel = false; + AVR32_PM.GCCTRL[Channel].oscsel = 1; + break; + case CLOCK_SRC_PLL0: + AVR32_PM.GCCTRL[Channel].pllsel = true; + AVR32_PM.GCCTRL[Channel].oscsel = 0; + break; + case CLOCK_SRC_PLL1: + AVR32_PM.GCCTRL[Channel].pllsel = true; + AVR32_PM.GCCTRL[Channel].oscsel = 1; + break; + default: + return false; + } + + AVR32_PM.GCCTRL[Channel].diven = (SourceFreq > Frequency) ? true : false; + AVR32_PM.GCCTRL[Channel].div = (((SourceFreq / Frequency) - 1) / 2); + AVR32_PM.GCCTRL[Channel].cen = true; + + return true; + } + + /** Stops the given generic clock of the UC3 microcontroller. + * + * \param[in] Channel Index of the generic clock to stop. + * + * \return Boolean \c true if the generic clock was successfully stopped, \c false if invalid parameters specified. + */ + static inline bool UC3CLK_StopGenericClock(const uint8_t Channel) ATTR_ALWAYS_INLINE; + static inline bool UC3CLK_StopGenericClock(const uint8_t Channel) + { + if (Channel >= AVR32_PM_GCLK_NUM) + return false; + + AVR32_PM.GCCTRL[Channel].cen = false; + + return true; + } + + /** Sets the clock source for the main microcontroller core. The given clock source should be configured + * and ready for use before this function is called. + * + * This function will configure the FLASH controller's wait states automatically to suit the given clock source. + * + * \param[in] Source Clock source for the CPU core, a value from \ref UC3_System_ClockSource_t. + * \param[in] SourceFreq Frequency of the CPU core's clock source, in Hz. + * + * \return Boolean \c true if the CPU core clock was successfully altered, \c false if invalid parameters specified. + */ + static inline bool UC3CLK_SetCPUClockSource(const uint8_t Source, + const uint32_t SourceFreq) ATTR_ALWAYS_INLINE; + static inline bool UC3CLK_SetCPUClockSource(const uint8_t Source, + const uint32_t SourceFreq) + { + if (SourceFreq > AVR32_PM_CPU_MAX_FREQ) + return false; + + AVR32_FLASHC.FCR.fws = (SourceFreq > AVR32_FLASHC_FWS_0_MAX_FREQ) ? true : false; + + switch (Source) + { + #if defined(AVR32_PM_MCCTRL_MCSEL_SLOW) + case CLOCK_SRC_SLOW_CLK: + AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_SLOW; + break; + #endif + #if defined(AVR32_PM_MCCTRL_MCSEL_OSC0) + case CLOCK_SRC_OSC0: + AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_OSC0; + break; + #endif + #if defined(AVR32_PM_MCCTRL_MCSEL_PLL0) + case CLOCK_SRC_PLL0: + AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_PLL0; + break; + #endif + default: + return false; + } + + return true; + } + + /* Disable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + } + #endif + +#endif + +/** @} */ + diff --git a/LUFA/Platform/UC3/Exception.S b/LUFA/Platform/UC3/Exception.S new file mode 100644 index 0000000000..59f16f16f1 --- /dev/null +++ b/LUFA/Platform/UC3/Exception.S @@ -0,0 +1,128 @@ +/* + 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. +*/ + +#if defined(__AVR32__) +#include <avr32/io.h> + +.section .exception_handlers, "ax", @progbits + +// ================= EXCEPTION TABLE ================ +.balign 0x200 +.global EVBA_Table +EVBA_Table: + +.org 0x000 +Exception_Unrecoverable_Exception: + rjmp $ +.org 0x004 +Exception_TLB_Multiple_Hit: + rjmp $ +.org 0x008 +Exception_Bus_Error_Data_Fetch: + rjmp $ +.org 0x00C +Exception_Bus_Error_Instruction_Fetch: + rjmp $ +.org 0x010 +Exception_NMI: + rjmp $ +.org 0x014 +Exception_Instruction_Address: + rjmp $ +.org 0x018 +Exception_ITLB_Protection: + rjmp $ +.org 0x01C +Exception_OCD_Breakpoint: + rjmp $ +.org 0x020 +Exception_Illegal_Opcode: + rjmp $ +.org 0x024 +Exception_Unimplemented_Instruction: + rjmp $ +.org 0x028 +Exception_Privilege_Violation: + rjmp $ +.org 0x02C +Exception_Floating_Point: + rjmp $ +.org 0x030 +Exception_Coprocessor_Absent: + rjmp $ +.org 0x034 +Exception_Data_Address_Read: + rjmp $ +.org 0x038 +Exception_Data_Address_Write: + rjmp $ +.org 0x03C +Exception_DTLB_Protection_Read: + rjmp $ +.org 0x040 +Exception_DTLB_Protection_Write: + rjmp $ +.org 0x044 +Exception_DTLB_Modified: + rjmp $ +.org 0x050 +Exception_ITLB_Miss: + rjmp $ +.org 0x060 +Exception_DTLB_Miss_Read: + rjmp $ +.org 0x070 +Exception_DTLB_Miss_Write: + rjmp $ +.org 0x100 +Exception_Supervisor_Call: + rjmp $ +// ============== END OF EXCEPTION TABLE ============= + +// ============= GENERAL INTERRUPT HANDLER =========== +.balign 4 +.irp Level, 0, 1, 2, 3 +Exception_INT\Level: + mov r12, \Level + call INTC_GetInterruptHandler + mov pc, r12 +.endr +// ========= END OF GENERAL INTERRUPT HANDLER ======== + +// ====== GENERAL INTERRUPT HANDLER OFFSET TABLE ====== +.balign 4 +.global Autovector_Table +Autovector_Table: +.irp Level, 0, 1, 2, 3 + .word ((AVR32_INTC_INT0 + \Level) << AVR32_INTC_IPR_INTLEVEL_OFFSET) | (Exception_INT\Level - EVBA_Table) +.endr +// === END OF GENERAL INTERRUPT HANDLER OFFSET TABLE === + +#endif diff --git a/LUFA/Platform/UC3/InterruptManagement.c b/LUFA/Platform/UC3/InterruptManagement.c new file mode 100644 index 0000000000..b99be24b97 --- /dev/null +++ b/LUFA/Platform/UC3/InterruptManagement.c @@ -0,0 +1,62 @@ +/* + 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. +*/ + +#include "../../Common/Common.h" +#if (ARCH == ARCH_UC3) + +#define __INCLUDE_FROM_INTMANAGEMENT_C +#include "InterruptManagement.h" + +/** Interrupt vector table, containing the ISR to call for each interrupt group */ +InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS]; + +/** ISR for unhandled interrupt groups */ +ISR(Unhandled_Interrupt) +{ + for (;;); +} + +InterruptHandlerPtr_t INTC_GetInterruptHandler(const uint_reg_t InterruptLevel) +{ + return InterruptHandlers[AVR32_INTC.icr[AVR32_INTC_INT3 - InterruptLevel]]; +} + +void INTC_Init(void) +{ + for (uint8_t InterruptGroup = 0; InterruptGroup < AVR32_INTC_NUM_INT_GRPS; InterruptGroup++) + { + InterruptHandlers[InterruptGroup] = Unhandled_Interrupt; + AVR32_INTC.ipr[InterruptGroup] = Autovector_Table[AVR32_INTC_INT0]; + } + + __builtin_mtsr(AVR32_EVBA, (uintptr_t)&EVBA_Table); +} + +#endif diff --git a/LUFA/Platform/UC3/InterruptManagement.h b/LUFA/Platform/UC3/InterruptManagement.h new file mode 100644 index 0000000000..b051930370 --- /dev/null +++ b/LUFA/Platform/UC3/InterruptManagement.h @@ -0,0 +1,174 @@ +/* + 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 + +/** @} */ + diff --git a/LUFA/Platform/UC3/UC3ExperimentalInfo.txt b/LUFA/Platform/UC3/UC3ExperimentalInfo.txt new file mode 100644 index 0000000000..8aadb3ed79 --- /dev/null +++ b/LUFA/Platform/UC3/UC3ExperimentalInfo.txt @@ -0,0 +1 @@ +Please note that the UC3 architecture support is EXPERIMENTAL at this time, and may be non-functional/incomplete in some areas. Please refer to the Known Issues section of the LUFA manual.
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