Xmega Application Note

clksys_driver.h

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#ifndef CLKSYS_DRIVER_H
#define CLKSYS_DRIVER_H

#include "avr_compiler.h"


/* Definitions of macros. */

#define CLKSYS_Enable( _oscSel ) ( OSC.CTRL |= (_oscSel) )

#define CLKSYS_IsReady( _oscSel ) ( OSC.STATUS & (_oscSel) )

#define CLKSYS_RTC_ClockSource_Disable() ( CLK.RTCCTRL &= ~CLK_RTCEN_bm )

#define CLKSYS_AutoCalibration_Disable( _clk ) ( (_clk).CTRL &= ~DFLL_ENABLE_bm )


/* Prototyping of function. Detailed information is found in source file. */
void CCPWrite( volatile uint8_t * address, uint8_t value );
void CLKSYS_XOSC_Config( OSC_FRQRANGE_t freqRange,
                         bool lowPower32kHz,
                         OSC_XOSCSEL_t xoscModeSelection );
void CLKSYS_PLL_Config( OSC_PLLSRC_t clockSource, uint8_t factor );
uint8_t CLKSYS_Disable( uint8_t oscSel );
void CLKSYS_Prescalers_Config( CLK_PSADIV_t PSAfactor,
                               CLK_PSBCDIV_t PSBCfactor );
uint8_t CLKSYS_Main_ClockSource_Select( CLK_SCLKSEL_t clockSource );
void CLKSYS_RTC_ClockSource_Enable( CLK_RTCSRC_t clockSource );
void CLKSYS_AutoCalibration_Enable( uint8_t clkSource, bool extReference );
void CLKSYS_XOSC_FailureDetection_Enable( void );
void CLKSYS_Configuration_Lock( void );


#endif