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Diffstat (limited to 'LUFA/Platform/XMEGA/ClockManagement.h')
| -rw-r--r-- | LUFA/Platform/XMEGA/ClockManagement.h | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/LUFA/Platform/XMEGA/ClockManagement.h b/LUFA/Platform/XMEGA/ClockManagement.h new file mode 100644 index 000000000..de531c298 --- /dev/null +++ b/LUFA/Platform/XMEGA/ClockManagement.h @@ -0,0 +1,222 @@ +/*
+ 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 AVR USB XMEGA microcontrollers.
+ *
+ * Clock management driver for the AVR USB XMEGA 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_XMEGAClocks AVR USB XMEGA Clock Management Driver - LUFA/Platform/XMEGA/ClockManagement.h
+ * \brief Module Clock Driver for the AVR USB XMEGA 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 AVR USB XMEGA 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/XMEGA/ClockManagement.h>
+ *
+ * void main(void)
+ * {
+ * [TODO]
+ * }
+ * \endcode
+ *
+ * @{
+ */
+
+#ifndef _XMEGA_CLOCK_MANAGEMENT_H_
+#define _XMEGA_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 XMEGA_Extern_OSC_ClockTypes_t
+ {
+ EXOSC_MODE_2MHZ_MAX = OSC_FRQRANGE_04TO2_gc, /**< External crystal oscillator equal to or slower than 2MHz. */
+ EXOSC_MODE_9MHZ_MAX = OSC_FRQRANGE_2TO9_gc, /**< External crystal oscillator equal to or slower than 9MHz. */
+ EXOSC_MODE_12MHZ_MAX = OSC_FRQRANGE_9TO12_gc, /**< External crystal oscillator equal to or slower than 12MHz. */
+ EXOSC_MODE_16MHZ_MAX = OSC_FRQRANGE_12TO16_gc, /**< External crystal oscillator equal to or slower than 16MHz. */
+ };
+
+ /** Enum for the possible external oscillator statup times. */
+ enum XMEGA_Extern_OSC_ClockStartup_t
+ {
+ EXOSC_START_6CLK = OSC_XOSCSEL_EXTCLK_gc, /**< Wait 6 clock cycles before startup (external clock). */
+ EXOSC_START_32KCLK = OSC_XOSCSEL_32KHz_gc, /**< Wait 32K clock cycles before startup (32.768KHz crystal). */
+ EXOSC_START_256CLK = OSC_XOSCSEL_XTAL_256CLK_gc, /**< Wait 256 clock cycles before startup. */
+ EXOSC_START_1KCLK = OSC_XOSCSEL_XTAL_1KCLK_gc, /**< Wait 1K clock cycles before startup. */
+ EXOSC_START_16KCLK = OSC_XOSCSEL_XTAL_16KCLK_gc, /**< Wait 16K clock cycles before startup. */
+ };
+
+ /** Enum for the possible module clock sources. */
+ enum XMEGA_System_ClockSource_t
+ {
+ CLOCK_SRC_INT_RC2MHZ = 0, /**< Clock sourced from the Internal 2MHz RC Oscillator clock. */
+ CLOCK_SRC_INT_RC32MHZ = 1, /**< Clock sourced from the Internal 32MHz RC Oscillator clock. */
+ CLOCK_SRC_INT_RC32KHZ = 2, /**< Clock sourced from the Internal 32KHz RC Oscillator clock. */
+ CLOCK_SRC_XOSC = 3, /**< Clock sourced from the External Oscillator clock. */
+ CLOCK_SRC_PLL = 4, /**< Clock sourced from the Internal PLL 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 XMEGA_Extern_OSC_ClockTypes_t.
+ * \param[in] Startup Statup time of the external oscillator, a value from \ref XMEGA_Extern_OSC_ClockStartup_t.
+ *
+ * \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified.
+ */
+ static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,
+ const uint8_t Type,
+ const uint8_t Startup) ATTR_ALWAYS_INLINE;
+ static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,
+ const uint8_t Type,
+ const uint8_t Startup)
+ {
+ return false; // TODO
+ }
+
+ /** 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)
+ {
+ return; // TODO
+ }
+
+ /** 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 XMEGA_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)
+ {
+ return false; // TODO
+ }
+
+ /** 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)
+ {
+ // TODO
+ }
+
+ /** 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 XMEGA_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)
+ {
+ return false; // TODO
+ }
+
+ /** 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)
+ {
+ // TODO
+ }
+
+ /** 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 XMEGA_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)
+ {
+ return false // TODO
+ }
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
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