-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2011.\r
-\r
- dean [at] fourwalledcubicle [dot] com\r
- www.lufa-lib.org\r
-*/\r
-\r
-/*\r
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, distribute, and sell this\r
- software and its documentation for any purpose is hereby granted\r
- without fee, provided that the above copyright notice appear in\r
- all copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- * \brief Module Clock Driver for the AVR32 UC3 microcontrollers.\r
- *\r
- * Clock management driver for the AVR32 UC3 microcontrollers. This driver allows for the configuration\r
- * of the various clocks within the device to clock the various peripherals.\r
- */\r
-\r
-/** \ingroup Group_PlatformDrivers\r
- * \defgroup Group_PlatformDrivers_UC3Clocks UC3 Clock Management Driver - LUFA/Platform/UC3/ClockManagement.h\r
- * \brief Module Clock Driver for the AVR32 UC3 microcontrollers.\r
- *\r
- * \section Sec_Dependencies Module Source Dependencies\r
- * The following files must be built with any user project that uses this module:\r
- * - None\r
- *\r
- * \section Sec_ModDescription Module Description\r
- * Clock management driver for the AVR32 UC3 microcontrollers. This driver allows for the configuration\r
- * of the various clocks within the device to clock the various peripherals.\r
- *\r
- * Usage Example:\r
- * \code\r
- * #include <LUFA/Platform/UC3/ClockManagement.h>\r
- *\r
- * void main(void)\r
- * {\r
- * // Start the master external oscillator which will be used as the main clock reference\r
- * AVR32CLK_StartExternalOscillator(0, EXOSC_MODE_8MHZ_OR_MORE, EXOSC_START_0CLK);\r
- * \r
- * // Start the PLL for the CPU clock, switch CPU to it\r
- * AVR32CLK_StartPLL(0, CLOCK_SRC_OSC0, 12000000, F_CPU);\r
- * AVR32CLK_SetCPUClockSource(CLOCK_SRC_PLL0, F_CPU);\r
- *\r
- * // Start the PLL for the USB Generic Clock module\r
- * AVR32CLK_StartPLL(1, CLOCK_SRC_OSC0, 12000000, 48000000);\r
- * }\r
- * \endcode\r
- *\r
- * @{\r
- */\r
-\r
-#ifndef _UC3_CLOCK_MANAGEMENT_H_\r
-#define _UC3_CLOCK_MANAGEMENT_H_\r
-\r
- /* Includes: */\r
- #include <LUFA/Common/Common.h>\r
-\r
- /* Enable C linkage for C++ Compilers: */\r
- #if defined(__cplusplus)\r
- extern "C" {\r
- #endif\r
-\r
- /* Public Interface - May be used in end-application: */\r
- /* Macros: */\r
- /** Enum for the possible external oscillator types. */\r
- enum UC3_Extern_OSC_ClockTypes_t\r
- {\r
- EXOSC_MODE_CLOCK = AVR32_PM_OSCCTRL0_MODE_EXT_CLOCK, /**< External clock (non-crystal) mode. */\r
- EXOSC_MODE_900KHZ_MAX = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G0, /**< External crystal oscillator equal to or slower than 900KHz. */\r
- EXOSC_MODE_3MHZ_MAX = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G1, /**< External crystal oscillator equal to or slower than 3MHz. */\r
- EXOSC_MODE_8MHZ_MAX = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G2, /**< External crystal oscillator equal to or slower than 8MHz. */\r
- EXOSC_MODE_8MHZ_OR_MORE = AVR32_PM_OSCCTRL0_MODE_CRYSTAL_G3, /**< External crystal oscillator equal to or faster than 8MHz. */ \r
- };\r
-\r
- /** Enum for the possible external oscillator statup times. */\r
- enum UC3_Extern_OSC_ClockStartup_t\r
- {\r
- EXOSC_START_0CLK = AVR32_PM_OSCCTRL0_STARTUP_0_RCOSC, /**< Immediate startup, no delay. */\r
- EXOSC_START_64CLK = AVR32_PM_OSCCTRL0_STARTUP_64_RCOSC, /**< Wait 64 clock cyles before startup for stability. */\r
- EXOSC_START_128CLK = AVR32_PM_OSCCTRL0_STARTUP_128_RCOSC, /**< Wait 128 clock cyles before startup for stability. */\r
- EXOSC_START_2048CLK = AVR32_PM_OSCCTRL0_STARTUP_2048_RCOSC, /**< Wait 2048 clock cyles before startup for stability. */\r
- EXOSC_START_4096CLK = AVR32_PM_OSCCTRL0_STARTUP_4096_RCOSC, /**< Wait 4096 clock cyles before startup for stability. */\r
- EXOSC_START_8192CLK = AVR32_PM_OSCCTRL0_STARTUP_8192_RCOSC, /**< Wait 8192 clock cyles before startup for stability. */\r
- EXOSC_START_16384CLK = AVR32_PM_OSCCTRL0_STARTUP_16384_RCOSC, /**< Wait 16384 clock cyles before startup for stability. */\r
- };\r
- \r
- /** Enum for the possible module clock sources. */\r
- enum UC3_System_ClockSource_t\r
- {\r
- CLOCK_SRC_SLOW_CLK = 0, /**< Clock sourced from the internal slow clock. */\r
- CLOCK_SRC_OSC0 = 1, /**< Clock sourced from the Oscillator 0 clock. */\r
- CLOCK_SRC_OSC1 = 2, /**< Clock sourced from the Oscillator 1 clock. */\r
- CLOCK_SRC_PLL0 = 3, /**< Clock sourced from the PLL 0 clock. */\r
- CLOCK_SRC_PLL1 = 4, /**< Clock sourced from the PLL 1 clock. */\r
- };\r
-\r
- /* Inline Functions: */\r
- /** Starts the given external oscillator of the UC3 microcontroller, with the given options. This routine blocks until\r
- * the oscillator is ready for use.\r
- *\r
- * \param[in] Channel Index of the external oscillator to start.\r
- * \param[in] Type Type of clock attached to the given oscillator channel, a value from \ref UC3_Extern_OSC_ClockTypes_t.\r
- * \param[in] Startup Statup time of the external oscillator, a value from \ref UC3_Extern_OSC_ClockStartup_t.\r
- *\r
- * \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified.\r
- */\r
- static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,\r
- const uint8_t Type,\r
- const uint8_t Startup) ATTR_ALWAYS_INLINE;\r
- static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,\r
- const uint8_t Type,\r
- const uint8_t Startup)\r
- {\r
- switch (Channel)\r
- {\r
- case 0:\r
- AVR32_PM.OSCCTRL0.startup = Startup;\r
- AVR32_PM.OSCCTRL0.mode = Type;\r
- break;\r
- case 1:\r
- AVR32_PM.OSCCTRL1.startup = Startup;\r
- AVR32_PM.OSCCTRL1.mode = Type;\r
- break;\r
- default:\r
- return false;\r
- }\r
-\r
- AVR32_PM.mcctrl |= (1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel));\r
-\r
- while (!(AVR32_PM.poscsr & (1 << (AVR32_PM_POSCSR_OSC0RDY_OFFSET + Channel))));\r
- return true;\r
- }\r
-\r
- /** Stops the given external oscillator of the UC3 microcontroller.\r
- *\r
- * \param[in] Channel Index of the external oscillator to stop.\r
- */\r
- static inline void AVR32CLK_StopExternalOscillator(const uint8_t Channel) ATTR_ALWAYS_INLINE;\r
- static inline void AVR32CLK_StopExternalOscillator(const uint8_t Channel)\r
- {\r
- AVR32_PM.mcctrl &= ~(1 << (AVR32_PM_MCCTRL_OSC0EN_OFFSET + Channel));\r
- }\r
-\r
- /** Starts the given PLL of the UC3 microcontroller, with the given options. This routine blocks until the PLL is ready for use.\r
- *\r
- * \param[in] Channel Index of the PLL to start.\r
- * \param[in] Source Clock source for the PLL, a value from \ref UC3_System_ClockSource_t.\r
- * \param[in] SourceFreq Frequency of the PLL's clock source, in Hz.\r
- * \param[in] Frequency Target frequency of the PLL's output.\r
- *\r
- * \return Boolean \c true if the PLL was successfully started, \c false if invalid parameters specified.\r
- */\r
- static inline bool AVR32CLK_StartPLL(const uint8_t Channel,\r
- const uint8_t Source,\r
- const uint32_t SourceFreq,\r
- const uint32_t Frequency) ATTR_ALWAYS_INLINE;\r
- static inline bool AVR32CLK_StartPLL(const uint8_t Channel,\r
- const uint8_t Source,\r
- const uint32_t SourceFreq,\r
- const uint32_t Frequency)\r
- {\r
- switch (Source)\r
- {\r
- case CLOCK_SRC_OSC0:\r
- AVR32_PM.PLL[Channel].pllosc = 0;\r
- break;\r
- case CLOCK_SRC_OSC1:\r
- AVR32_PM.PLL[Channel].pllosc = 1;\r
- break;\r
- default:\r
- return false;\r
- }\r
-\r
- AVR32_PM.PLL[Channel].pllmul = (Frequency / SourceFreq) ? (((Frequency / SourceFreq) - 1) / 2) : 0;\r
- AVR32_PM.PLL[Channel].plldiv = 0;\r
- AVR32_PM.PLL[Channel].pllen = true;\r
-\r
- while (!(AVR32_PM.poscsr & (1 << (AVR32_PM_POSCSR_LOCK0_OFFSET + Channel))));\r
- return true;\r
- }\r
-\r
- /** Stops the given PLL of the UC3 microcontroller.\r
- *\r
- * \param[in] Channel Index of the PLL to stop.\r
- */\r
- static inline void AVR32CLK_StopPLL(const uint8_t Channel) ATTR_ALWAYS_INLINE;\r
- static inline void AVR32CLK_StopPLL(const uint8_t Channel)\r
- {\r
- AVR32_PM.PLL[Channel].pllen = false;\r
- }\r
- \r
- /** Starts the given Generic Clock of the UC3 microcontroller, with the given options.\r
- *\r
- * \param[in] Channel Index of the Generic Clock to start.\r
- * \param[in] Source Clock source for the Generic Clock, a value from \ref UC3_System_ClockSource_t.\r
- * \param[in] SourceFreq Frequency of the Generic Clock's clock source, in Hz.\r
- * \param[in] Frequency Target frequency of the Generic Clock's output.\r
- *\r
- * \return Boolean \c true if the Generic Clock was successfully started, \c false if invalid parameters specified.\r
- */\r
- static inline bool AVR32CLK_StartGenericClock(const uint8_t Channel,\r
- const uint8_t Source,\r
- const uint32_t SourceFreq,\r
- const uint32_t Frequency) ATTR_ALWAYS_INLINE;\r
- static inline bool AVR32CLK_StartGenericClock(const uint8_t Channel,\r
- const uint8_t Source,\r
- const uint32_t SourceFreq,\r
- const uint32_t Frequency)\r
- {\r
- switch (Source)\r
- {\r
- case CLOCK_SRC_OSC0:\r
- AVR32_PM.GCCTRL[Channel].pllsel = false;\r
- AVR32_PM.GCCTRL[Channel].oscsel = 0;\r
- break;\r
- case CLOCK_SRC_OSC1:\r
- AVR32_PM.GCCTRL[Channel].pllsel = false;\r
- AVR32_PM.GCCTRL[Channel].oscsel = 1;\r
- break;\r
- case CLOCK_SRC_PLL0:\r
- AVR32_PM.GCCTRL[Channel].pllsel = true;\r
- AVR32_PM.GCCTRL[Channel].oscsel = 0;\r
- break;\r
- case CLOCK_SRC_PLL1:\r
- AVR32_PM.GCCTRL[Channel].pllsel = true;\r
- AVR32_PM.GCCTRL[Channel].oscsel = 1;\r
- break;\r
- default:\r
- return false;\r
- }\r
- \r
- if (SourceFreq < Frequency)\r
- return false;\r
-\r
- AVR32_PM.GCCTRL[Channel].diven = (SourceFreq > Frequency) ? true : false;\r
- AVR32_PM.GCCTRL[Channel].div = (((SourceFreq / Frequency) - 1) / 2);\r
- AVR32_PM.GCCTRL[Channel].cen = true;\r
- \r
- return true;\r
- }\r
- \r
- /** Stops the given generic clock of the UC3 microcontroller.\r
- *\r
- * \param[in] Channel Index of the generic clock to stop.\r
- */\r
- static inline void AVR32CLK_StopGenericClock(const uint8_t Channel) ATTR_ALWAYS_INLINE;\r
- static inline void AVR32CLK_StopGenericClock(const uint8_t Channel)\r
- {\r
- AVR32_PM.GCCTRL[Channel].cen = false;\r
- }\r
- \r
- /** Sets the clock source for the main microcontroller core. The given clock source should be configured\r
- * and ready for use before this function is called.\r
- *\r
- * This function will configure the FLASH controller's wait states automatically to suit the given clock source.\r
- *\r
- * \param[in] Source Clock source for the CPU core, a value from \ref UC3_System_ClockSource_t.\r
- * \param[in] SourceFreq Frequency of the CPU core's clock source, in Hz.\r
- *\r
- * \return Boolean \c true if the CPU core clock was sucessfully altered, \c false if invalid parameters specified.\r
- */\r
- static inline bool AVR32CLK_SetCPUClockSource(const uint8_t Source,\r
- const uint32_t SourceFreq) ATTR_ALWAYS_INLINE;\r
- static inline bool AVR32CLK_SetCPUClockSource(const uint8_t Source,\r
- const uint32_t SourceFreq)\r
- {\r
- AVR32_FLASHC.FCR.fws = (SourceFreq > 30000000) ? true : false;\r
-\r
- switch (Source)\r
- {\r
- #if defined(AVR32_PM_MCCTRL_MCSEL_SLOW)\r
- case CLOCK_SRC_SLOW_CLK:\r
- AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_SLOW;\r
- break;\r
- #endif\r
- #if defined(AVR32_PM_MCCTRL_MCSEL_OSC0)\r
- case CLOCK_SRC_OSC0:\r
- AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_OSC0;\r
- break;\r
- #endif\r
- #if defined(AVR32_PM_MCCTRL_MCSEL_PLL0)\r
- case CLOCK_SRC_PLL0:\r
- AVR32_PM.MCCTRL.mcsel = AVR32_PM_MCCTRL_MCSEL_PLL0;\r
- break;\r
- #endif\r
- default:\r
- return false;\r
- }\r
- \r
- return true;\r
- }\r
-\r
- /* Disable C linkage for C++ Compilers: */\r
- #if defined(__cplusplus)\r
- }\r
- #endif\r
-\r
-#endif\r
-\r
-/** @} */\r
+/*
+ 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
+
+/** @} */
projects / pub / USBasp.git / blobdiff