//------------------------------------------------------------------------------
/// Selection of Master Clock.
/// \param clockSource Master Clock source.
/// \param mckr MCKR configuration instance.
///
/// \note
/// The PMC_MCKR register must not be programmed in a single write
/// operation (see. Product Data Sheet).
//------------------------------------------------------------------------------
void PMC_SetMckSelection(unsigned int clockSource, mckrConfiguration *mckr)
{
switch ( clockSource )
{
case AT91C_PMC_CSS_SLOW_CLK :
PMC_SwitchMck2SlowClock();
_PMC_SetMckPrescaler(mckr->prescaler);
break;
case AT91C_PMC_CSS_MAIN_CLK :
_PMC_SwitchMck2MainClock();
_PMC_SetMckPrescaler(mckr->prescaler);
break;
#if defined ( AT91C_PMC_CSS_PLLA_CLK)
case AT91C_PMC_CSS_PLLA_CLK :
_PMC_SetMckPrescaler(mckr->prescaler);
_PMC_SwitchMck2PllaClock(mckr);
break ;
#endif
#if defined ( AT91C_PMC_CSS_PLL_CLK)
case AT91C_PMC_CSS_PLL_CLK :
_PMC_SetMckPrescaler(mckr->prescaler);
_PMC_SwitchMck2PllaClock(mckr);
break ;
#endif
}
}
/**
* \brief Selection of Master Clock.
*
* \param clockSource Master Clock source.
* \param prescaler Master Clock prescaler.
*
* \note
* The PMC_MCKR register must not be programmed in a single write
* operation (see. Product Data Sheet).
*/
void PMC_SetMckSelection(uint32_t clockSource, uint32_t prescaler)
{
switch ( clockSource ) {
case PMC_MCKR_CSS_SLOW_CLK :
_PMC_SwitchMck2SlowClock();
_PMC_SetMckPrescaler(prescaler);
break;
case PMC_MCKR_CSS_MAIN_CLK :
_PMC_SwitchMck2MainClock();
_PMC_SetMckPrescaler(prescaler);
break;
case PMC_MCKR_CSS_PLLA_CLK :
_PMC_SetMckPrescaler(prescaler);
_PMC_SwitchMck2PllaClock();
break ;
}
}