/**
* @brief Return SAIx clock frequency
* @param SAIxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_SAI1_CLKSOURCE
* @arg @ref LL_RCC_SAI2_CLKSOURCE (*)
*
* (*) value not defined in all devices.
* @retval SAI clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that PLL is not ready
* - @ref LL_RCC_PERIPH_FREQUENCY_NA indicates that external clock is used
*/
uint32_t LL_RCC_GetSAIClockFreq(uint32_t SAIxSource)
{
uint32_t sai_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_SAI_CLKSOURCE(SAIxSource));
if (SAIxSource == LL_RCC_SAI1_CLKSOURCE)
{
/* SAI1CLK clock frequency */
switch (LL_RCC_GetSAIClockSource(SAIxSource))
{
case LL_RCC_SAI1_CLKSOURCE_PLLSAI1: /* PLLSAI1 clock used as SAI1 clock source */
if (LL_RCC_PLLSAI1_IsReady())
{
sai_frequency = RCC_PLLSAI1_GetFreqDomain_SAI();
}
break;
#if defined(RCC_PLLSAI2_SUPPORT)
case LL_RCC_SAI1_CLKSOURCE_PLLSAI2: /* PLLSAI2 clock used as SAI1 clock source */
if (LL_RCC_PLLSAI2_IsReady())
{
sai_frequency = RCC_PLLSAI2_GetFreqDomain_SAI();
}
break;
#endif /* RCC_PLLSAI2_SUPPORT */
case LL_RCC_SAI1_CLKSOURCE_PLL: /* PLL clock used as SAI1 clock source */
if (LL_RCC_PLL_IsReady())
{
sai_frequency = RCC_PLL_GetFreqDomain_SAI();
}
break;
case LL_RCC_SAI1_CLKSOURCE_PIN: /* External input clock used as SAI1 clock source */
default:
sai_frequency = LL_RCC_PERIPH_FREQUENCY_NA;
break;
}
}
else
{
#if defined(RCC_CCIPR_SAI2SEL)
if (SAIxSource == LL_RCC_SAI2_CLKSOURCE)
{
/* SAI2CLK clock frequency */
switch (LL_RCC_GetSAIClockSource(SAIxSource))
{
case LL_RCC_SAI2_CLKSOURCE_PLLSAI1: /* PLLSAI1 clock used as SAI2 clock source */
if (LL_RCC_PLLSAI1_IsReady())
{
sai_frequency = RCC_PLLSAI1_GetFreqDomain_SAI();
}
break;
#if defined(RCC_PLLSAI2_SUPPORT)
case LL_RCC_SAI2_CLKSOURCE_PLLSAI2: /* PLLSAI2 clock used as SAI2 clock source */
if (LL_RCC_PLLSAI2_IsReady())
{
sai_frequency = RCC_PLLSAI2_GetFreqDomain_SAI();
}
break;
#endif /* RCC_PLLSAI2_SUPPORT */
case LL_RCC_SAI2_CLKSOURCE_PLL: /* PLL clock used as SAI2 clock source */
if (LL_RCC_PLL_IsReady())
{
sai_frequency = RCC_PLL_GetFreqDomain_SAI();
}
break;
case LL_RCC_SAI2_CLKSOURCE_PIN: /* External input clock used as SAI2 clock source */
default:
sai_frequency = LL_RCC_PERIPH_FREQUENCY_NA;
break;
}
}
#endif /*RCC_CCIPR_SAI2SEL*/
}
return sai_frequency;
}
/**
* @brief Return SAIx clock frequency
* @param SAIxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_SAI1_CLKSOURCE
* @arg @ref LL_RCC_SAI2_CLKSOURCE
* @retval SAI clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that PLL is not ready
* - @ref LL_RCC_PERIPH_FREQUENCY_NA indicates that external clock is used
*/
uint32_t LL_RCC_GetSAIClockFreq(uint32_t SAIxSource)
{
uint32_t sai_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_SAI_CLKSOURCE(SAIxSource));
if (SAIxSource == LL_RCC_SAI1_CLKSOURCE)
{
/* SAI1CLK clock frequency */
switch (LL_RCC_GetSAIClockSource(SAIxSource))
{
case LL_RCC_SAI1_CLKSOURCE_PLLSAI: /* PLLSAI clock used as SAI1 clock source */
if (LL_RCC_PLLSAI_IsReady())
{
sai_frequency = RCC_PLLSAI_GetFreqDomain_SAI();
}
break;
case LL_RCC_SAI1_CLKSOURCE_PLLI2S: /* PLLI2S clock used as SAI1 clock source */
if (LL_RCC_PLLI2S_IsReady())
{
sai_frequency = RCC_PLLI2S_GetFreqDomain_SAI();
}
break;
#if defined(RCC_SAI1SEL_PLLSRC_SUPPORT)
case LL_RCC_SAI1_CLKSOURCE_PLLSRC:
switch (LL_RCC_PLL_GetMainSource())
{
case LL_RCC_PLLSOURCE_HSE: /* HSE clock used as SAI1 clock source */
if (LL_RCC_HSE_IsReady())
{
sai_frequency = HSE_VALUE;
}
break;
case LL_RCC_PLLSOURCE_HSI: /* HSI clock used as SAI1 clock source */
default:
if (LL_RCC_HSI_IsReady())
{
sai_frequency = HSI_VALUE;
}
break;
}
break;
#endif /* RCC_SAI1SEL_PLLSRC_SUPPORT */
case LL_RCC_SAI1_CLKSOURCE_PIN: /* External input clock used as SAI1 clock source */
default:
sai_frequency = LL_RCC_PERIPH_FREQUENCY_NA;
break;
}
}
else
{
if (SAIxSource == LL_RCC_SAI2_CLKSOURCE)
{
/* SAI2CLK clock frequency */
switch (LL_RCC_GetSAIClockSource(SAIxSource))
{
case LL_RCC_SAI2_CLKSOURCE_PLLSAI: /* PLLSAI clock used as SAI2 clock source */
if (LL_RCC_PLLSAI_IsReady())
{
sai_frequency = RCC_PLLSAI_GetFreqDomain_SAI();
}
break;
case LL_RCC_SAI2_CLKSOURCE_PLLI2S: /* PLLI2S clock used as SAI2 clock source */
if (LL_RCC_PLLI2S_IsReady())
{
sai_frequency = RCC_PLLI2S_GetFreqDomain_SAI();
}
break;
#if defined(RCC_SAI2SEL_PLLSRC_SUPPORT)
case LL_RCC_SAI2_CLKSOURCE_PLLSRC:
switch (LL_RCC_PLL_GetMainSource())
{
case LL_RCC_PLLSOURCE_HSE: /* HSE clock used as SAI2 clock source */
if (LL_RCC_HSE_IsReady())
{
sai_frequency = HSE_VALUE;
}
break;
case LL_RCC_PLLSOURCE_HSI: /* HSI clock used as SAI2 clock source */
default:
if (LL_RCC_HSI_IsReady())
{
sai_frequency = HSI_VALUE;
}
break;
}
break;
#endif /* RCC_SAI2SEL_PLLSRC_SUPPORT */
case LL_RCC_SAI2_CLKSOURCE_PIN: /* External input clock used as SAI2 clock source */
default:
sai_frequency = LL_RCC_PERIPH_FREQUENCY_NA;
break;
}
}
}
return sai_frequency;
}
