Update UC3 platform driver support to use the bitmasks defined in the header files over raw constants.
Start implementation of XMEGA platform drivers.pull/1469/head
Dean Camera
13 years ago
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2011.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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* \brief Module Clock Driver for the AVR USB XMEGA microcontrollers.
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*
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* Clock management driver for the AVR USB XMEGA microcontrollers. This driver allows for the configuration
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* of the various clocks within the device to clock the various peripherals.
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*/
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/** \ingroup Group_PlatformDrivers
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* \defgroup Group_PlatformDrivers_XMEGAClocks AVR USB XMEGA Clock Management Driver - LUFA/Platform/XMEGA/ClockManagement.h
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* \brief Module Clock Driver for the AVR USB XMEGA microcontrollers.
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*
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* \section Sec_Dependencies Module Source Dependencies
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* The following files must be built with any user project that uses this module:
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* - None
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*
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* \section Sec_ModDescription Module Description
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* Clock management driver for the AVR USB XMEGA microcontrollers. This driver allows for the configuration
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* of the various clocks within the device to clock the various peripherals.
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*
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* Usage Example:
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* \code
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* #include <LUFA/Platform/XMEGA/ClockManagement.h>
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*
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* void main(void)
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* {
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* [TODO]
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* }
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* \endcode
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*
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* @{
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*/
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#ifndef _XMEGA_CLOCK_MANAGEMENT_H_
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#define _XMEGA_CLOCK_MANAGEMENT_H_
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/* Includes: */
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#include <LUFA/Common/Common.h>
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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/** Enum for the possible external oscillator types. */
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enum XMEGA_Extern_OSC_ClockTypes_t
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{
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EXOSC_MODE_2MHZ_MAX = OSC_FRQRANGE_04TO2_gc, /**< External crystal oscillator equal to or slower than 2MHz. */
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EXOSC_MODE_9MHZ_MAX = OSC_FRQRANGE_2TO9_gc, /**< External crystal oscillator equal to or slower than 9MHz. */
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EXOSC_MODE_12MHZ_MAX = OSC_FRQRANGE_9TO12_gc, /**< External crystal oscillator equal to or slower than 12MHz. */
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EXOSC_MODE_16MHZ_MAX = OSC_FRQRANGE_12TO16_gc, /**< External crystal oscillator equal to or slower than 16MHz. */
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};
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/** Enum for the possible external oscillator statup times. */
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enum XMEGA_Extern_OSC_ClockStartup_t
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{
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EXOSC_START_6CLK = OSC_XOSCSEL_EXTCLK_gc, /**< Wait 6 clock cycles before startup (external clock). */
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EXOSC_START_32KCLK = OSC_XOSCSEL_32KHz_gc, /**< Wait 32K clock cycles before startup (32.768KHz crystal). */
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EXOSC_START_256CLK = OSC_XOSCSEL_XTAL_256CLK_gc, /**< Wait 256 clock cycles before startup. */
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EXOSC_START_1KCLK = OSC_XOSCSEL_XTAL_1KCLK_gc, /**< Wait 1K clock cycles before startup. */
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EXOSC_START_16KCLK = OSC_XOSCSEL_XTAL_16KCLK_gc, /**< Wait 16K clock cycles before startup. */
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};
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/** Enum for the possible module clock sources. */
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enum XMEGA_System_ClockSource_t
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{
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CLOCK_SRC_INT_RC2MHZ = 0, /**< Clock sourced from the Internal 2MHz RC Oscillator clock. */
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CLOCK_SRC_INT_RC32MHZ = 1, /**< Clock sourced from the Internal 32MHz RC Oscillator clock. */
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CLOCK_SRC_INT_RC32KHZ = 2, /**< Clock sourced from the Internal 32KHz RC Oscillator clock. */
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CLOCK_SRC_XOSC = 3, /**< Clock sourced from the External Oscillator clock. */
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CLOCK_SRC_PLL = 4, /**< Clock sourced from the Internal PLL clock. */
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};
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/* Inline Functions: */
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/** Starts the given external oscillator of the UC3 microcontroller, with the given options. This routine blocks until
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* the oscillator is ready for use.
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*
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* \param[in] Channel Index of the external oscillator to start.
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* \param[in] Type Type of clock attached to the given oscillator channel, a value from \ref XMEGA_Extern_OSC_ClockTypes_t.
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* \param[in] Startup Statup time of the external oscillator, a value from \ref XMEGA_Extern_OSC_ClockStartup_t.
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*
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* \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified.
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*/
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static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,
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const uint8_t Type,
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const uint8_t Startup) ATTR_ALWAYS_INLINE;
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static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,
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const uint8_t Type,
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const uint8_t Startup)
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{
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return false; // TODO
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}
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/** Stops the given external oscillator of the UC3 microcontroller.
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*
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* \param[in] Channel Index of the external oscillator to stop.
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*/
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static inline void AVR32CLK_StopExternalOscillator(const uint8_t Channel) ATTR_ALWAYS_INLINE;
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static inline void AVR32CLK_StopExternalOscillator(const uint8_t Channel)
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{
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return; // TODO
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}
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/** Starts the given PLL of the UC3 microcontroller, with the given options. This routine blocks until the PLL is ready for use.
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*
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* \param[in] Channel Index of the PLL to start.
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* \param[in] Source Clock source for the PLL, a value from \ref XMEGA_System_ClockSource_t.
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* \param[in] SourceFreq Frequency of the PLL's clock source, in Hz.
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* \param[in] Frequency Target frequency of the PLL's output.
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*
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* \return Boolean \c true if the PLL was successfully started, \c false if invalid parameters specified.
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*/
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static inline bool AVR32CLK_StartPLL(const uint8_t Channel,
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const uint8_t Source,
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const uint32_t SourceFreq,
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const uint32_t Frequency) ATTR_ALWAYS_INLINE;
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static inline bool AVR32CLK_StartPLL(const uint8_t Channel,
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const uint8_t Source,
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const uint32_t SourceFreq,
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const uint32_t Frequency)
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{
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return false; // TODO
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}
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/** Stops the given PLL of the UC3 microcontroller.
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*
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* \param[in] Channel Index of the PLL to stop.
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*/
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static inline void AVR32CLK_StopPLL(const uint8_t Channel) ATTR_ALWAYS_INLINE;
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static inline void AVR32CLK_StopPLL(const uint8_t Channel)
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{
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// TODO
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}
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/** Starts the given Generic Clock of the UC3 microcontroller, with the given options.
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*
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* \param[in] Channel Index of the Generic Clock to start.
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* \param[in] Source Clock source for the Generic Clock, a value from \ref XMEGA_System_ClockSource_t.
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* \param[in] SourceFreq Frequency of the Generic Clock's clock source, in Hz.
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* \param[in] Frequency Target frequency of the Generic Clock's output.
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*
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* \return Boolean \c true if the Generic Clock was successfully started, \c false if invalid parameters specified.
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*/
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static inline bool AVR32CLK_StartGenericClock(const uint8_t Channel,
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const uint8_t Source,
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const uint32_t SourceFreq,
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const uint32_t Frequency) ATTR_ALWAYS_INLINE;
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static inline bool AVR32CLK_StartGenericClock(const uint8_t Channel,
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const uint8_t Source,
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const uint32_t SourceFreq,
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const uint32_t Frequency)
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{
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return false; // TODO
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}
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/** Stops the given generic clock of the UC3 microcontroller.
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*
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* \param[in] Channel Index of the generic clock to stop.
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*/
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static inline void AVR32CLK_StopGenericClock(const uint8_t Channel) ATTR_ALWAYS_INLINE;
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static inline void AVR32CLK_StopGenericClock(const uint8_t Channel)
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{
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// TODO
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}
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/** Sets the clock source for the main microcontroller core. The given clock source should be configured
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* and ready for use before this function is called.
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*
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* This function will configure the FLASH controller's wait states automatically to suit the given clock source.
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*
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* \param[in] Source Clock source for the CPU core, a value from \ref XMEGA_System_ClockSource_t.
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* \param[in] SourceFreq Frequency of the CPU core's clock source, in Hz.
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*
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* \return Boolean \c true if the CPU core clock was sucessfully altered, \c false if invalid parameters specified.
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*/
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static inline bool AVR32CLK_SetCPUClockSource(const uint8_t Source,
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const uint32_t SourceFreq) ATTR_ALWAYS_INLINE;
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static inline bool AVR32CLK_SetCPUClockSource(const uint8_t Source,
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const uint32_t SourceFreq)
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{
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return false // TODO
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}
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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/** @} */
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