/**
* @brief Return I2Cx clock frequency
* @param I2CxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_I2C1_CLKSOURCE
* @arg @ref LL_RCC_I2C3_CLKSOURCE (*)
*
* (*) value not defined in all devices
* @retval I2C clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that HSI oscillator is not ready
*/
uint32_t LL_RCC_GetI2CClockFreq(uint32_t I2CxSource)
{
uint32_t i2c_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_I2C_CLKSOURCE(I2CxSource));
/* I2C1 CLK clock frequency */
if (I2CxSource == LL_RCC_I2C1_CLKSOURCE)
{
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C1_CLKSOURCE_SYSCLK: /* I2C1 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C1_CLKSOURCE_HSI: /* I2C1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C1_CLKSOURCE_PCLK1: /* I2C1 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#if defined(RCC_CCIPR_I2C3SEL)
/* I2C3 CLK clock frequency */
if (I2CxSource == LL_RCC_I2C3_CLKSOURCE)
{
switch (LL_RCC_GetI2CClockSource(I2CxSource))
{
case LL_RCC_I2C3_CLKSOURCE_SYSCLK: /* I2C3 Clock is System Clock */
i2c_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_I2C3_CLKSOURCE_HSI: /* I2C3 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
i2c_frequency = HSI_VALUE;
}
break;
case LL_RCC_I2C3_CLKSOURCE_PCLK1: /* I2C3 Clock is PCLK1 */
default:
i2c_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#endif /*RCC_CCIPR_I2C3SEL*/
return i2c_frequency;
}
/**
* @brief Return SWPMIx clock frequency
* @param SWPMIxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_SWPMI1_CLKSOURCE
* @retval SWPMI clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI) is not ready
*/
uint32_t LL_RCC_GetSWPMIClockFreq(uint32_t SWPMIxSource)
{
uint32_t swpmi_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_SWPMI_CLKSOURCE(SWPMIxSource));
/* SWPMI1CLK clock frequency */
switch (LL_RCC_GetSWPMIClockSource(SWPMIxSource))
{
case LL_RCC_SWPMI1_CLKSOURCE_HSI: /* SWPMI1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
swpmi_frequency = HSI_VALUE;
}
break;
case LL_RCC_SWPMI1_CLKSOURCE_PCLK: /* SWPMI1 Clock is PCLK1 */
default:
swpmi_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
return swpmi_frequency;
}
/**
* @brief Return the frequencies of different on chip clocks; System, AHB and APB1 buses clocks
* @note Each time SYSCLK, HCLK and/or PCLK1 clock changes, this function
* must be called to update structure fields. Otherwise, any
* configuration based on this function will be incorrect.
* @param RCC_Clocks pointer to a @ref LL_RCC_ClocksTypeDef structure which will hold the clocks frequencies
* @retval None
*/
void LL_RCC_GetSystemClocksFreq(LL_RCC_ClocksTypeDef *RCC_Clocks)
{
/* Get SYSCLK frequency */
RCC_Clocks->SYSCLK_Frequency = RCC_GetSystemClockFreq();
/* HCLK clock frequency */
RCC_Clocks->HCLK_Frequency = RCC_GetHCLKClockFreq(RCC_Clocks->SYSCLK_Frequency);
/* PCLK1 clock frequency */
RCC_Clocks->PCLK1_Frequency = RCC_GetPCLK1ClockFreq(RCC_Clocks->HCLK_Frequency);
}
/**
* @brief Return LPTIMx clock frequency
* @param LPTIMxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_LPTIM1_CLKSOURCE
* @retval LPTIM clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetLPTIMClockFreq(uint32_t LPTIMxSource)
{
uint32_t lptim_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_LPTIM_CLKSOURCE(LPTIMxSource));
if (LPTIMxSource == LL_RCC_LPTIM1_CLKSOURCE)
{
/* LPTIM1CLK clock frequency */
switch (LL_RCC_GetLPTIMClockSource(LPTIMxSource))
{
case LL_RCC_LPTIM1_CLKSOURCE_LSI: /* LPTIM1 Clock is LSI Osc. */
if (LL_RCC_LSI_IsReady())
{
lptim_frequency = LSI_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_HSI: /* LPTIM1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
lptim_frequency = HSI_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_LSE: /* LPTIM1 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
lptim_frequency = LSE_VALUE;
}
break;
case LL_RCC_LPTIM1_CLKSOURCE_PCLK1: /* LPTIM1 Clock is PCLK1 */
default:
lptim_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
return lptim_frequency;
}
/**
* @brief Return DFSDMx clock frequency
* @param DFSDMxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_DFSDM1_CLKSOURCE
* @retval DFSDM clock frequency (in Hz)
*/
uint32_t LL_RCC_GetDFSDMClockFreq(uint32_t DFSDMxSource)
{
uint32_t dfsdm_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_DFSDM_CLKSOURCE(DFSDMxSource));
/* DFSDM1CLK clock frequency */
switch (LL_RCC_GetDFSDMClockSource(DFSDMxSource))
{
case LL_RCC_DFSDM1_CLKSOURCE_SYSCLK: /* DFSDM1 Clock is SYSCLK */
dfsdm_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_DFSDM1_CLKSOURCE_PCLK: /* DFSDM1 Clock is PCLK1 */
default:
dfsdm_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
return dfsdm_frequency;
}
/**
* @brief Return USARTx clock frequency
* @param USARTxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_USART1_CLKSOURCE
* @arg @ref LL_RCC_USART2_CLKSOURCE (*)
*
* (*) value not defined in all devices.
* @retval USART clock frequency (in Hz)
* @arg @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetUSARTClockFreq(uint32_t USARTxSource)
{
uint32_t usart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_USART_CLKSOURCE(USARTxSource));
#if defined(RCC_CCIPR_USART1SEL)
if (USARTxSource == LL_RCC_USART1_CLKSOURCE)
{
/* USART1CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART1_CLKSOURCE_SYSCLK: /* USART1 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART1_CLKSOURCE_HSI: /* USART1 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART1_CLKSOURCE_LSE: /* USART1 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART1_CLKSOURCE_PCLK2: /* USART1 Clock is PCLK2 */
default:
usart_frequency = RCC_GetPCLK2ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#endif /* RCC_CCIPR_USART1SEL */
#if defined(RCC_CCIPR_USART2SEL)
if (USARTxSource == LL_RCC_USART2_CLKSOURCE)
{
/* USART2CLK clock frequency */
switch (LL_RCC_GetUSARTClockSource(USARTxSource))
{
case LL_RCC_USART2_CLKSOURCE_SYSCLK: /* USART2 Clock is System Clock */
usart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_USART2_CLKSOURCE_HSI: /* USART2 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
usart_frequency = HSI_VALUE;
}
break;
case LL_RCC_USART2_CLKSOURCE_LSE: /* USART2 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
usart_frequency = LSE_VALUE;
}
break;
case LL_RCC_USART2_CLKSOURCE_PCLK1: /* USART2 Clock is PCLK1 */
default:
usart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
#endif /* RCC_CCIPR_USART2SEL */
return usart_frequency;
}
/**
* @brief Return UARTx clock frequency
* @param UARTxSource This parameter can be one of the following values:
* @arg @ref LL_RCC_UART4_CLKSOURCE
* @arg @ref LL_RCC_UART5_CLKSOURCE
* @arg @ref LL_RCC_UART7_CLKSOURCE
* @arg @ref LL_RCC_UART8_CLKSOURCE
* @retval UART clock frequency (in Hz)
* - @ref LL_RCC_PERIPH_FREQUENCY_NO indicates that oscillator (HSI or LSE) is not ready
*/
uint32_t LL_RCC_GetUARTClockFreq(uint32_t UARTxSource)
{
uint32_t uart_frequency = LL_RCC_PERIPH_FREQUENCY_NO;
/* Check parameter */
assert_param(IS_LL_RCC_UART_CLKSOURCE(UARTxSource));
if (UARTxSource == LL_RCC_UART4_CLKSOURCE)
{
/* UART4CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART4_CLKSOURCE_SYSCLK: /* UART4 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART4_CLKSOURCE_HSI: /* UART4 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART4_CLKSOURCE_LSE: /* UART4 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART4_CLKSOURCE_PCLK1: /* UART4 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (UARTxSource == LL_RCC_UART5_CLKSOURCE)
{
/* UART5CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART5_CLKSOURCE_SYSCLK: /* UART5 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART5_CLKSOURCE_HSI: /* UART5 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART5_CLKSOURCE_LSE: /* UART5 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART5_CLKSOURCE_PCLK1: /* UART5 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else if (UARTxSource == LL_RCC_UART7_CLKSOURCE)
{
/* UART7CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART7_CLKSOURCE_SYSCLK: /* UART7 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART7_CLKSOURCE_HSI: /* UART7 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART7_CLKSOURCE_LSE: /* UART7 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART7_CLKSOURCE_PCLK1: /* UART7 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
else
{
if (UARTxSource == LL_RCC_UART8_CLKSOURCE)
{
/* UART8CLK clock frequency */
switch (LL_RCC_GetUARTClockSource(UARTxSource))
{
case LL_RCC_UART8_CLKSOURCE_SYSCLK: /* UART8 Clock is System Clock */
uart_frequency = RCC_GetSystemClockFreq();
break;
case LL_RCC_UART8_CLKSOURCE_HSI: /* UART8 Clock is HSI Osc. */
if (LL_RCC_HSI_IsReady())
{
uart_frequency = HSI_VALUE;
}
break;
case LL_RCC_UART8_CLKSOURCE_LSE: /* UART8 Clock is LSE Osc. */
if (LL_RCC_LSE_IsReady())
{
uart_frequency = LSE_VALUE;
}
break;
case LL_RCC_UART8_CLKSOURCE_PCLK1: /* UART8 Clock is PCLK1 */
default:
uart_frequency = RCC_GetPCLK1ClockFreq(RCC_GetHCLKClockFreq(RCC_GetSystemClockFreq()));
break;
}
}
}
return uart_frequency;
}
