diff options
author | Dean Camera <dean@fourwalledcubicle.com> | 2011-07-15 08:46:08 +0000 |
---|---|---|
committer | Dean Camera <dean@fourwalledcubicle.com> | 2011-07-15 08:46:08 +0000 |
commit | 0c2ad9eb349e1a5676468af3b407329dde4a53b4 (patch) | |
tree | b3e3ee89775704f827926613b9924d927e06acd5 /LUFA/Platform/UC3 | |
parent | a36012fc4b057dc1fe96f75a005cd8ba017a6a71 (diff) | |
download | lufa-0c2ad9eb349e1a5676468af3b407329dde4a53b4.tar.gz lufa-0c2ad9eb349e1a5676468af3b407329dde4a53b4.tar.bz2 lufa-0c2ad9eb349e1a5676468af3b407329dde4a53b4.zip |
Add missing SVN eol-style property to files where it was missing.
Diffstat (limited to 'LUFA/Platform/UC3')
-rw-r--r-- | LUFA/Platform/UC3/ClockManagement.h | 648 | ||||
-rw-r--r-- | LUFA/Platform/UC3/Exception.S | 250 | ||||
-rw-r--r-- | LUFA/Platform/UC3/InterruptManagement.c | 124 | ||||
-rw-r--r-- | LUFA/Platform/UC3/InterruptManagement.h | 324 |
4 files changed, 673 insertions, 673 deletions
diff --git a/LUFA/Platform/UC3/ClockManagement.h b/LUFA/Platform/UC3/ClockManagement.h index 125a8a9b5..bb5679ad9 100644 --- a/LUFA/Platform/UC3/ClockManagement.h +++ b/LUFA/Platform/UC3/ClockManagement.h @@ -1,324 +1,324 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2011 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 disclaim 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
- * \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 <LUFA/Platform/UC3/ClockManagement.h>
- *
- * 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 <LUFA/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 statup 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 cyles before startup for stability. */
- EXOSC_START_128CLK = AVR32_PM_OSCCTRL0_STARTUP_128_RCOSC, /**< Wait 128 clock cyles before startup for stability. */
- EXOSC_START_2048CLK = AVR32_PM_OSCCTRL0_STARTUP_2048_RCOSC, /**< Wait 2048 clock cyles before startup for stability. */
- EXOSC_START_4096CLK = AVR32_PM_OSCCTRL0_STARTUP_4096_RCOSC, /**< Wait 4096 clock cyles before startup for stability. */
- EXOSC_START_8192CLK = AVR32_PM_OSCCTRL0_STARTUP_8192_RCOSC, /**< Wait 8192 clock cyles before startup for stability. */
- EXOSC_START_16384CLK = AVR32_PM_OSCCTRL0_STARTUP_16384_RCOSC, /**< Wait 16384 clock cyles 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 Statup 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 AVR32CLK_StartExternalOscillator(const uint8_t Channel,
- const uint8_t Type,
- const uint8_t Startup) ATTR_ALWAYS_INLINE;
- static inline bool 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)
- {
- 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.
- *
- * \note 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 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)
- {
- 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 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 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 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 = 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;
- }
-
- 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;
- }
-
- /** 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)
- {
- AVR32_PM.GCCTRL[Channel].cen = false;
- }
-
- /** 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 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)
- {
- #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
-
-/** @} */
+/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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 disclaim 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 + * \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 <LUFA/Platform/UC3/ClockManagement.h> + * + * 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 <LUFA/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 statup 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 cyles before startup for stability. */ + EXOSC_START_128CLK = AVR32_PM_OSCCTRL0_STARTUP_128_RCOSC, /**< Wait 128 clock cyles before startup for stability. */ + EXOSC_START_2048CLK = AVR32_PM_OSCCTRL0_STARTUP_2048_RCOSC, /**< Wait 2048 clock cyles before startup for stability. */ + EXOSC_START_4096CLK = AVR32_PM_OSCCTRL0_STARTUP_4096_RCOSC, /**< Wait 4096 clock cyles before startup for stability. */ + EXOSC_START_8192CLK = AVR32_PM_OSCCTRL0_STARTUP_8192_RCOSC, /**< Wait 8192 clock cyles before startup for stability. */ + EXOSC_START_16384CLK = AVR32_PM_OSCCTRL0_STARTUP_16384_RCOSC, /**< Wait 16384 clock cyles 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 Statup 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 AVR32CLK_StartExternalOscillator(const uint8_t Channel, + const uint8_t Type, + const uint8_t Startup) ATTR_ALWAYS_INLINE; + static inline bool 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) + { + 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. + * + * \note 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 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) + { + 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 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 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 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 = 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; + } + + 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; + } + + /** 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) + { + AVR32_PM.GCCTRL[Channel].cen = false; + } + + /** 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 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) + { + #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 index 9509fd7f2..ddfe00984 100644 --- a/LUFA/Platform/UC3/Exception.S +++ b/LUFA/Platform/UC3/Exception.S @@ -1,125 +1,125 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2011 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 disclaim 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 <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 ===
+/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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 disclaim 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 <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 === diff --git a/LUFA/Platform/UC3/InterruptManagement.c b/LUFA/Platform/UC3/InterruptManagement.c index 2e260b38b..98d1e45f5 100644 --- a/LUFA/Platform/UC3/InterruptManagement.c +++ b/LUFA/Platform/UC3/InterruptManagement.c @@ -1,62 +1,62 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2011 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 disclaim 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 "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 (;;);
-}
-
-/** 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)
-{
- return InterruptHandlers[AVR32_INTC.icr[AVR32_INTC_INT3 - InterruptLevel]];
-}
-
-/** 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)
-{
- 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);
-}
+/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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 disclaim 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 "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 (;;); +} + +/** 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) +{ + return InterruptHandlers[AVR32_INTC.icr[AVR32_INTC_INT3 - InterruptLevel]]; +} + +/** 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) +{ + 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); +} diff --git a/LUFA/Platform/UC3/InterruptManagement.h b/LUFA/Platform/UC3/InterruptManagement.h index 67dc3ea1d..dd70675c3 100644 --- a/LUFA/Platform/UC3/InterruptManagement.h +++ b/LUFA/Platform/UC3/InterruptManagement.h @@ -1,162 +1,162 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2011 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 disclaim 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
- * \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 <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 <LUFA/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: */
- 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)
-
- /* 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
-
-#endif
-
-/** @} */
+/* + LUFA Library + Copyright (C) Dean Camera, 2011. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2011 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 disclaim 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 + * \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 <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 <LUFA/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: */ + 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) + + /* 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 + +#endif + +/** @} */ |