From 5f51554a5ea47614423b33f0de36e6564eeb4819 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Tue, 12 Jul 2011 13:32:11 +0000 Subject: Enhance and document the AVR32 UC3 platform drivers. --- LUFA.pnproj | 2 +- LUFA/ManPages/Groups.txt | 4 + LUFA/Platform/UC3/ClockManagement.h | 398 +++++++++++++++++++++----------- LUFA/Platform/UC3/InterruptManagement.c | 6 +- LUFA/Platform/UC3/InterruptManagement.h | 168 ++++++++++---- 5 files changed, 401 insertions(+), 177 deletions(-) diff --git a/LUFA.pnproj b/LUFA.pnproj index 553d546bf..309dae414 100644 --- a/LUFA.pnproj +++ b/LUFA.pnproj @@ -1 +1 @@ - \ No newline at end of file + \ No newline at end of file diff --git a/LUFA/ManPages/Groups.txt b/LUFA/ManPages/Groups.txt index 0c9f4a657..bac362bf5 100644 --- a/LUFA/ManPages/Groups.txt +++ b/LUFA/ManPages/Groups.txt @@ -19,3 +19,7 @@ * Miscellaneous driver Functions, macros, variables, enums and types. */ +/** @defgroup Group_PlatformDrivers System Platform Drivers + * + * Drivers relating to the general architecture platform, such as clock setup and interrupt management. + */ diff --git a/LUFA/Platform/UC3/ClockManagement.h b/LUFA/Platform/UC3/ClockManagement.h index 2b7325ba8..24ac2619e 100644 --- a/LUFA/Platform/UC3/ClockManagement.h +++ b/LUFA/Platform/UC3/ClockManagement.h @@ -28,8 +28,48 @@ this software. */ -#ifndef _CLOCK_MANAGEMENT_H_ -#define _CLOCK_MANAGEMENT_H_ +/** \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 + * \defgroup Group_PlatformDrivers_UC3Clocks UC3 Clock Management Driver - LUFA/Platform/UC3/ClockManagement.h + * \brief Module Clock Driver for the AVR32 UC3 microcontrollers. + * + * \section Sec_Dependencies Module Source Dependencies + * The following files must be built with any user project that uses this module: + * - None + * + * \section Sec_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 + * + * void main(void) + * { + * // Start the master external oscillator which will be used as the main clock reference + * AVR32CLK_StartExternalOscillator(0, EXOSC_MODE_8MHZ_OR_MORE, EXOSC_START_0CLK); + * + * // Start the PLL for the CPU clock, switch CPU to it + * AVR32CLK_StartPLL(0, CLOCK_SRC_OSC0, 12000000, F_CPU); + * AVR32CLK_SetCPUClockSource(CLOCK_SRC_PLL0, F_CPU); + * + * // Start the PLL for the USB Generic Clock module + * AVR32CLK_StartPLL(1, CLOCK_SRC_OSC0, 12000000, 48000000); + * } + * \endcode + * + * @{ + */ + +#ifndef _UC3_CLOCK_MANAGEMENT_H_ +#define _UC3_CLOCK_MANAGEMENT_H_ /* Includes: */ #include @@ -38,144 +78,240 @@ #include - /* Macros: */ - enum Extern_OSC_ClockStartup_t - { - EXOSC_START_0CLK = 0, - EXOSC_START_64CLK = 1, - EXOSC_START_128CLK = 2, - EXOSC_START_2048CLK = 3, - EXOSC_START_4096CLK = 4, - EXOSC_START_8192CLK = 5, - EXOSC_START_16384CLK = 6, - }; - - enum Extern_OSC_ClockMode_t - { - EXOSC_MODE_CLOCK = 0, - EXOSC_MODE_900KHZ_MAX = 1, - EXOSC_MODE_3MHZ_MAX = 2, - EXOSC_MODE_8MHZ_MAX = 3, - EXOSC_MODE_8MHZ_OR_MORE = 4, - }; - - enum - { - CLOCK_SRC_SLOW_CLK = 0, - CLOCK_SRC_OSC0 = 1, - CLOCK_SRC_OSC1 = 2, - CLOCK_SRC_PLL0 = 3, - CLOCK_SRC_PLL1 = 4, - }; - - /* Inline Functions: */ - static inline bool AVR32CLK_StartExternalOscillator(const uint8_t Channel, - const uint8_t Type, - const uint8_t Startup) - { - AVR32_PM.OSCCTRL0.startup = Startup; - AVR32_PM.OSCCTRL0.mode = Type; - AVR32_PM.mcctrl |= (1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel)); - - while (!(AVR32_PM.poscsr & (1 << (AVR32_PM_POSCSR_OSC0RDY_OFFSET + Channel)))); - return true; - } - - static inline void AVR32CLK_StopExternalOscillator(const uint8_t Channel) - { - AVR32_PM.mcctrl &= ~(1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel)); - } - - static inline bool AVR32CLK_StartPLL(const uint8_t Channel, - const uint8_t Source, - const uint32_t SourceFreq, - const uint32_t Frequency) - { - switch (Source) + /* 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 Extern_OSC_ClockTypes_t + { + EXOSC_MODE_CLOCK = 0, /**< External clock (non-crystal) mode. */ + EXOSC_MODE_900KHZ_MAX = 1, /**< External crystal oscillator equal to or slower than 900KHz. */ + EXOSC_MODE_3MHZ_MAX = 2, /**< External crystal oscillator equal to or slower than 3MHz. */ + EXOSC_MODE_8MHZ_MAX = 3, /**< External crystal oscillator equal to or slower than 8MHz. */ + EXOSC_MODE_8MHZ_OR_MORE = 4, /**< External crystal oscillator equal to or faster than 8MHz. */ + }; + + /** Enum for the possible external oscillator statup times. */ + enum Extern_OSC_ClockStartup_t + { + EXOSC_START_0CLK = 0, /**< Immediate startup, no delay. */ + EXOSC_START_64CLK = 1, /**< Wait 64 clock cyles before startup for stability. */ + EXOSC_START_128CLK = 2, /**< Wait 128 clock cyles before startup for stability. */ + EXOSC_START_2048CLK = 3, /**< Wait 2048 clock cyles before startup for stability. */ + EXOSC_START_4096CLK = 4, /**< Wait 4096 clock cyles before startup for stability. */ + EXOSC_START_8192CLK = 5, /**< Wait 8192 clock cyles before startup for stability. */ + EXOSC_START_16384CLK = 6, /**< Wait 16384 clock cyles before startup for stability. */ + }; + + /** Enum for the possible module clock sources. */ + enum 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 Extern_OSC_ClockTypes_t. + * \param[in] Startup Statup time of the external oscillator, a value from \ref Extern_OSC_ClockStartup_t. + * + * \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified. + */ + static inline void AVR32CLK_StartExternalOscillator(const uint8_t Channel, + const uint8_t Type, + const uint8_t Startup) ATTR_ALWAYS_INLINE; + static inline void AVR32CLK_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 AVR32CLK_StopExternalOscillator(const uint8_t Channel) ATTR_ALWAYS_INLINE; + static inline void AVR32CLK_StopExternalOscillator(const uint8_t Channel) { - 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.mcctrl &= ~(1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel)); } - 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; - } - - static inline void AVR32CLK_StopPLL(const uint8_t Channel) - { - AVR32_PM.PLL[Channel].pllen = false; - } - - static inline bool AVR32CLK_StartGenericClock(const uint8_t Channel, - const uint8_t Source, - const uint32_t SourceFreq, - const uint32_t Frequency) - { - switch (Source) + /** Starts the given PLL of the UC3 microcontroller, with the given options. This routine blocks until the PLL is ready for use. + * + * \param[in] Channel Index of the PLL to start. + * \param[in] Source Clock source for the PLL, a value from \ref 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 AVR32CLK_StartPLL(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) ATTR_ALWAYS_INLINE; + static inline bool AVR32CLK_StartPLL(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) { - case CLOCK_SRC_OSC0: - AVR32_PM.GCCTRL[Channel].pllsel = 0; - AVR32_PM.GCCTRL[Channel].oscsel = 0; - break; - case CLOCK_SRC_OSC1: - AVR32_PM.GCCTRL[Channel].pllsel = 0; - AVR32_PM.GCCTRL[Channel].oscsel = 1; - break; - case CLOCK_SRC_PLL0: - AVR32_PM.GCCTRL[Channel].pllsel = 1; - AVR32_PM.GCCTRL[Channel].oscsel = 0; - break; - case CLOCK_SRC_PLL1: - AVR32_PM.GCCTRL[Channel].pllsel = 1; - AVR32_PM.GCCTRL[Channel].oscsel = 1; - break; - default: - 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; } - AVR32_PM.GCCTRL[Channel].diven = (SourceFreq > Frequency) ? true : false; - AVR32_PM.GCCTRL[Channel].div = (((SourceFreq / Frequency) - 1) / 2); - AVR32_PM.GCCTRL[Channel].cen = true; + /** Stops the given PLL of the UC3 microcontroller. + * + * \param[in] Channel Index of the PLL to stop. + */ + static inline void AVR32CLK_StopPLL(const uint8_t Channel) ATTR_ALWAYS_INLINE; + static inline void AVR32CLK_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 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 AVR32CLK_StartGenericClock(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) ATTR_ALWAYS_INLINE; + static inline bool AVR32CLK_StartGenericClock(const uint8_t Channel, + const uint8_t Source, + const uint32_t SourceFreq, + const uint32_t Frequency) + { + switch (Source) + { + case CLOCK_SRC_OSC0: + AVR32_PM.GCCTRL[Channel].pllsel = 0; + AVR32_PM.GCCTRL[Channel].oscsel = 0; + break; + case CLOCK_SRC_OSC1: + AVR32_PM.GCCTRL[Channel].pllsel = 0; + AVR32_PM.GCCTRL[Channel].oscsel = 1; + break; + case CLOCK_SRC_PLL0: + AVR32_PM.GCCTRL[Channel].pllsel = 1; + AVR32_PM.GCCTRL[Channel].oscsel = 0; + break; + case CLOCK_SRC_PLL1: + AVR32_PM.GCCTRL[Channel].pllsel = 1; + AVR32_PM.GCCTRL[Channel].oscsel = 1; + break; + default: + return false; + } + + if (SourceFreq < Frequency) + 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; + } - return true; - } - - static inline void AVR32CLK_StopGenericClock(const uint8_t Channel) - { - AVR32_PM.GCCTRL[Channel].cen = false; - } - - static inline bool AVR32CLK_SetCPUClockSource(const uint8_t Source, - const uint32_t SourceFreq) - { - AVR32_FLASHC.FCR.fws = (SourceFreq > 30000000) ? true : false; - - switch (Source) + /** Stops the given generic clock of the UC3 microcontroller. + * + * \param[in] Channel Index of the generic clock to stop. + */ + static inline void AVR32CLK_StopGenericClock(const uint8_t Channel) ATTR_ALWAYS_INLINE; + static inline void AVR32CLK_StopGenericClock(const uint8_t Channel) { - case CLOCK_SRC_SLOW_CLK: - AVR32_PM.MCCTRL.mcsel = 0; - break; - case CLOCK_SRC_OSC0: - AVR32_PM.MCCTRL.mcsel = 1; - break; - case CLOCK_SRC_PLL0: - AVR32_PM.MCCTRL.mcsel = 2; - break; - default: - 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 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 sucessfully altered, \c false if invalid parameters specified. + */ + static inline bool AVR32CLK_SetCPUClockSource(const uint8_t Source, + const uint32_t SourceFreq) ATTR_ALWAYS_INLINE; + static inline bool AVR32CLK_SetCPUClockSource(const uint8_t Source, + const uint32_t SourceFreq) + { + AVR32_FLASHC.FCR.fws = (SourceFreq > 30000000) ? true : false; + + switch (Source) + { + case CLOCK_SRC_SLOW_CLK: + AVR32_PM.MCCTRL.mcsel = 0; + break; + case CLOCK_SRC_OSC0: + AVR32_PM.MCCTRL.mcsel = 1; + break; + case CLOCK_SRC_PLL0: + AVR32_PM.MCCTRL.mcsel = 2; + break; + default: + return false; + } + + return true; + } + + /* Disable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + } + #endif #endif + +/** @} */ diff --git a/LUFA/Platform/UC3/InterruptManagement.c b/LUFA/Platform/UC3/InterruptManagement.c index b1dda745c..2e260b38b 100644 --- a/LUFA/Platform/UC3/InterruptManagement.c +++ b/LUFA/Platform/UC3/InterruptManagement.c @@ -36,11 +36,11 @@ InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS]; /** ISR for unhandled interrupt groups */ ISR(Unhandled_Interrupt) { - while (true); + for (;;); } -/** Retrieves the associated interrupt handler for the interrupt currently being fired. This is - * called directly from the exception handler routine before dispatching to the ISR. +/** 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. */ InterruptHandlerPtr_t INTC_GetInterruptHandler(const uint_reg_t InterruptLevel) { diff --git a/LUFA/Platform/UC3/InterruptManagement.h b/LUFA/Platform/UC3/InterruptManagement.h index fec099dba..bcceab7f6 100644 --- a/LUFA/Platform/UC3/InterruptManagement.h +++ b/LUFA/Platform/UC3/InterruptManagement.h @@ -28,8 +28,47 @@ this software. */ -#ifndef _INTERRUPT_MANAGEMENT_H_ -#define _INTERRUPT_MANAGEMENT_H_ +/** \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 + * \defgroup Group_PlatformDrivers_UC3Interrupts UC3 Interrupt Controller Driver - LUFA/Platform/UC3/InterruptManagement.h + * \brief Interrupt Controller Driver for the AVR32 UC3 microcontrollers. + * + * \section Sec_Dependencies Module Source Dependencies + * The following files must be built with any user project that uses this module: + * - LUFA/Platform/UC3/InterruptManagement.c + * - LUFA/Platform/UC3/Exception.S + * + * \section Sec_ModDescription Module Description + * Interrupt controller driver for the AVR32 UC3 microcontrollers, for the configuration of interrupt + * handlers within the device. + * + * Usage Example: + * \code + * #include + * + * 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 @@ -38,46 +77,91 @@ #include - /* Macros: */ - #if !defined(ISR) - #define ISR(Name) void Name (void) __attribute__((__interrupt__)); void Name (void) + /* Enable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + extern "C" { + #endif + + /* Private Interface - For use in library only: */ + #if !defined(__DOXYGEN__) + /* External Variables: */ + extern const void EVBA_Table; + extern const uint32_t Autovector_Table[]; + extern InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS]; + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + /** Converts a given interrupt index into its assocated 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 assocated 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) + + /* Type Defines: */ + /** Type define for an interrupt handler ISR function. */ + typedef void (*InterruptHandlerPtr_t)(void); + + /* Function Prototypes: */ + /** Initializes the interrupt controller, nulling out all interrupt handlers ready for new registration. This + * function should be called once on startup to ensure the interrupt controller is ready for use. + */ + void INTC_Init(void); + + /* 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 - - #define INTC_EnableInterrupts() do { GCC_MEMORY_BARRIER(); __builtin_csrf(AVR32_SR_GM_OFFSET); } while (0) - #define INTC_DisableInterrupts() do { __builtin_ssrf(AVR32_SR_GM_OFFSET); GCC_MEMORY_BARRIER(); } while (0) - - /* Type Defines: */ - typedef void (*InterruptHandlerPtr_t)(void); - - /* External Variables: */ - extern const void EVBA_Table; - extern const uint32_t Autovector_Table[]; - extern InterruptHandlerPtr_t InterruptHandlers[AVR32_INTC_NUM_INT_GRPS]; - - /* Function Prototypes: */ - void INTC_Init(void); - - /* 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, examine the module's interrupt - * flag register bits. - * - * If multiple interrupts with the same group are registered, the last registered handler will become the - * handler called for interrupts raised within that group. - * - * \param[in] InterruptRequest Interrupt request index for the given interrupt, a AVR32_*_IRQ mask. - * \param[in] InterruptLevel Priority level for the specified interrupt, a AVR32_INTC_INT* mask. - * \param[in] Handler Address of the ISR handler for the interrupt group. - */ - static inline void INTC_RegisterGroupHandler(const uint16_t InterruptRequest, - const uint8_t InterruptLevel, - const InterruptHandlerPtr_t Handler) - { - uint8_t InterruptGroup = (InterruptRequest >> 5); - - InterruptHandlers[InterruptGroup] = Handler; - AVR32_INTC.ipr[InterruptGroup] = Autovector_Table[InterruptLevel]; - } #endif + +/** @} */ -- cgit v1.2.3