Extended Peripheral Control functions. More...

Functions
HAL_StatusTypeDef	HAL_RCCEx_PeriphCLKConfig (RCC_PeriphCLKInitTypeDef *PeriphClkInit)
	Initialize the RCC extended peripherals clocks according to the specified parameters in the RCC_PeriphCLKInitTypeDef.
void	HAL_RCCEx_GetPeriphCLKConfig (RCC_PeriphCLKInitTypeDef *PeriphClkInit)
	Get the RCC_ClkInitStruct according to the internal RCC configuration registers.
uint32_t	HAL_RCCEx_GetPeriphCLKFreq (uint32_t PeriphClk)
	Return the peripheral clock frequency for peripherals with clock source from PLLSAIs.

Detailed Description

Extended Peripheral Control functions.

 ===============================================================================
                ##### Extended Peripheral Control functions  #####
 ===============================================================================
    [..]
    This subsection provides a set of functions allowing to control the RCC Clocks
    frequencies.
    [..]
    (@) Important note: Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to
        select the RTC clock source; in this case the Backup domain will be reset in
        order to modify the RTC Clock source, as consequence RTC registers (including
        the backup registers) are set to their reset values.

Function Documentation

void HAL_RCCEx_GetPeriphCLKConfig ( RCC_PeriphCLKInitTypeDef * PeriphClkInit )

Get the RCC_ClkInitStruct according to the internal RCC configuration registers.

Parameters:

PeriphClkInit pointer to an RCC_PeriphCLKInitTypeDef structure that returns the configuration information for the Extended Peripherals clocks(SAI1, SAI2, LPTIM1, LPTIM2, I2C1, I2C2, I2C3, I2C4, LPUART, USART1, USART2, USART3, UART4, UART5, RTC, ADCx, DFSDMx, SWPMI1, USB, SDMMC1 and RNG).

Return values:

None

Definition at line 814 of file stm32l4xx_hal_rcc_ex.c.

uint32_t HAL_RCCEx_GetPeriphCLKFreq ( uint32_t PeriphClk )

Return the peripheral clock frequency for peripherals with clock source from PLLSAIs.

Note:: Return 0 if peripheral clock identifier not managed by this API

Parameters:

PeriphClk

Peripheral clock identifier This parameter can be one of the following values:

RCC_PERIPHCLK_RTC RTC peripheral clock
RCC_PERIPHCLK_ADC ADC peripheral clock
RCC_PERIPHCLK_DFSDM1 DFSDM1 peripheral clock (only for devices with DFSDM)
RCC_PERIPHCLK_I2C1 I2C1 peripheral clock
RCC_PERIPHCLK_I2C2 I2C2 peripheral clock
RCC_PERIPHCLK_I2C3 I2C3 peripheral clock
RCC_PERIPHCLK_LPTIM1 LPTIM1 peripheral clock
RCC_PERIPHCLK_LPTIM2 LPTIM2 peripheral clock
RCC_PERIPHCLK_LPUART1 LPUART1 peripheral clock
RCC_PERIPHCLK_RNG RNG peripheral clock
RCC_PERIPHCLK_SAI1 SAI1 peripheral clock
RCC_PERIPHCLK_SAI2 SAI2 peripheral clock (only for devices with SAI2)
RCC_PERIPHCLK_SDMMC1 SDMMC1 peripheral clock
RCC_PERIPHCLK_SWPMI1 SWPMI1 peripheral clock (only for devices with SWPMI1)
RCC_PERIPHCLK_USART1 USART1 peripheral clock
RCC_PERIPHCLK_USART2 USART1 peripheral clock
RCC_PERIPHCLK_USART3 USART1 peripheral clock
RCC_PERIPHCLK_UART4 UART4 peripheral clock (only for devices with UART4)
RCC_PERIPHCLK_UART5 UART5 peripheral clock (only for devices with UART5)
RCC_PERIPHCLK_USB USB peripheral clock (only for devices with USB)

Return values:

Frequency in Hz

Definition at line 1124 of file stm32l4xx_hal_rcc_ex.c.

References __HAL_RCC_GET_ADC_SOURCE, __HAL_RCC_GET_DFSDM1_SOURCE, __HAL_RCC_GET_I2C1_SOURCE, __HAL_RCC_GET_I2C2_SOURCE, __HAL_RCC_GET_I2C3_SOURCE, __HAL_RCC_GET_LPTIM1_SOURCE, __HAL_RCC_GET_LPTIM2_SOURCE, __HAL_RCC_GET_LPUART1_SOURCE, __HAL_RCC_GET_MSI_RANGE, __HAL_RCC_GET_PLL_OSCSOURCE, __HAL_RCC_GET_PLLCLKOUT_CONFIG, __HAL_RCC_GET_PLLSAI1CLKOUT_CONFIG, __HAL_RCC_GET_PLLSAI2CLKOUT_CONFIG, __HAL_RCC_GET_RTC_SOURCE, __HAL_RCC_GET_SAI1_SOURCE, __HAL_RCC_GET_SAI2_SOURCE, __HAL_RCC_GET_SWPMI1_SOURCE, __HAL_RCC_GET_UART4_SOURCE, __HAL_RCC_GET_UART5_SOURCE, __HAL_RCC_GET_USART1_SOURCE, __HAL_RCC_GET_USART2_SOURCE, __HAL_RCC_GET_USART3_SOURCE, assert_param, EXTERNAL_SAI1_CLOCK_VALUE, EXTERNAL_SAI2_CLOCK_VALUE, HAL_RCC_GetPCLK1Freq(), HAL_RCC_GetPCLK2Freq(), HAL_RCC_GetSysClockFreq(), HSE_VALUE, HSI48_VALUE, HSI_VALUE, IS_RCC_PERIPHCLOCK, LSE_VALUE, LSI_VALUE, RCC_ADCCLKSOURCE_PLLSAI1, RCC_ADCCLKSOURCE_PLLSAI2, RCC_ADCCLKSOURCE_SYSCLK, RCC_DFSDM1CLKSOURCE_PCLK2, RCC_I2C1CLKSOURCE_HSI, RCC_I2C1CLKSOURCE_PCLK1, RCC_I2C1CLKSOURCE_SYSCLK, RCC_I2C2CLKSOURCE_HSI, RCC_I2C2CLKSOURCE_PCLK1, RCC_I2C2CLKSOURCE_SYSCLK, RCC_I2C3CLKSOURCE_HSI, RCC_I2C3CLKSOURCE_PCLK1, RCC_I2C3CLKSOURCE_SYSCLK, RCC_LPTIM1CLKSOURCE_HSI, RCC_LPTIM1CLKSOURCE_LSE, RCC_LPTIM1CLKSOURCE_LSI, RCC_LPTIM1CLKSOURCE_PCLK1, RCC_LPTIM2CLKSOURCE_HSI, RCC_LPTIM2CLKSOURCE_LSE, RCC_LPTIM2CLKSOURCE_LSI, RCC_LPTIM2CLKSOURCE_PCLK1, RCC_LPUART1CLKSOURCE_HSI, RCC_LPUART1CLKSOURCE_LSE, RCC_LPUART1CLKSOURCE_PCLK1, RCC_LPUART1CLKSOURCE_SYSCLK, RCC_PERIPHCLK_ADC, RCC_PERIPHCLK_DFSDM1, RCC_PERIPHCLK_I2C1, RCC_PERIPHCLK_I2C2, RCC_PERIPHCLK_I2C3, RCC_PERIPHCLK_LPTIM1, RCC_PERIPHCLK_LPTIM2, RCC_PERIPHCLK_LPUART1, RCC_PERIPHCLK_RNG, RCC_PERIPHCLK_RTC, RCC_PERIPHCLK_SAI1, RCC_PERIPHCLK_SAI2, RCC_PERIPHCLK_SDMMC1, RCC_PERIPHCLK_SWPMI1, RCC_PERIPHCLK_UART4, RCC_PERIPHCLK_UART5, RCC_PERIPHCLK_USART1, RCC_PERIPHCLK_USART2, RCC_PERIPHCLK_USART3, RCC_PERIPHCLK_USB, RCC_PLL_SAI3CLK, RCC_PLLSAI1_ADC1CLK, RCC_PLLSAI1_SAI1CLK, RCC_PLLSAI2_ADC2CLK, RCC_PLLSAI2_SAI2CLK, RCC_PLLSOURCE_HSE, RCC_PLLSOURCE_HSI, RCC_PLLSOURCE_MSI, RCC_RTCCLKSOURCE_HSE_DIV32, RCC_RTCCLKSOURCE_LSE, RCC_RTCCLKSOURCE_LSI, RCC_SAI1CLKSOURCE_PIN, RCC_SAI1CLKSOURCE_PLL, RCC_SAI1CLKSOURCE_PLLSAI1, RCC_SAI1CLKSOURCE_PLLSAI2, RCC_SAI2CLKSOURCE_PIN, RCC_SAI2CLKSOURCE_PLL, RCC_SAI2CLKSOURCE_PLLSAI2, RCC_SWPMI1CLKSOURCE_HSI, RCC_SWPMI1CLKSOURCE_PCLK1, RCC_UART4CLKSOURCE_HSI, RCC_UART4CLKSOURCE_LSE, RCC_UART4CLKSOURCE_PCLK1, RCC_UART4CLKSOURCE_SYSCLK, RCC_UART5CLKSOURCE_HSI, RCC_UART5CLKSOURCE_LSE, RCC_UART5CLKSOURCE_PCLK1, RCC_UART5CLKSOURCE_SYSCLK, RCC_USART1CLKSOURCE_HSI, RCC_USART1CLKSOURCE_LSE, RCC_USART1CLKSOURCE_PCLK2, RCC_USART1CLKSOURCE_SYSCLK, RCC_USART2CLKSOURCE_HSI, RCC_USART2CLKSOURCE_LSE, RCC_USART2CLKSOURCE_PCLK1, RCC_USART2CLKSOURCE_SYSCLK, RCC_USART3CLKSOURCE_HSI, RCC_USART3CLKSOURCE_LSE, RCC_USART3CLKSOURCE_PCLK1, and RCC_USART3CLKSOURCE_SYSCLK.

Referenced by HAL_SAI_Init().

HAL_StatusTypeDef HAL_RCCEx_PeriphCLKConfig ( RCC_PeriphCLKInitTypeDef * PeriphClkInit )

Initialize the RCC extended peripherals clocks according to the specified parameters in the RCC_PeriphCLKInitTypeDef.

Parameters:

PeriphClkInit

pointer to an RCC_PeriphCLKInitTypeDef structure that contains a field PeriphClockSelection which can be a combination of the following values:

RCC_PERIPHCLK_RTC RTC peripheral clock
RCC_PERIPHCLK_ADC ADC peripheral clock
RCC_PERIPHCLK_DFSDM1 DFSDM1 peripheral clock (only for devices with DFSDM1)
RCC_PERIPHCLK_I2C1 I2C1 peripheral clock
RCC_PERIPHCLK_I2C2 I2C2 peripheral clock
RCC_PERIPHCLK_I2C3 I2C3 peripheral clock
RCC_PERIPHCLK_LPTIM1 LPTIM1 peripheral clock
RCC_PERIPHCLK_LPTIM2 LPTIM2 peripheral clock
RCC_PERIPHCLK_LPUART1 LPUART1 peripheral clock
RCC_PERIPHCLK_RNG RNG peripheral clock
RCC_PERIPHCLK_SAI1 SAI1 peripheral clock
RCC_PERIPHCLK_SAI2 SAI2 peripheral clock (only for devices with SAI2)
RCC_PERIPHCLK_SDMMC1 SDMMC1 peripheral clock
RCC_PERIPHCLK_SWPMI1 SWPMI1 peripheral clock (only for devices with SWPMI1)
RCC_PERIPHCLK_USART1 USART1 peripheral clock
RCC_PERIPHCLK_USART2 USART1 peripheral clock
RCC_PERIPHCLK_USART3 USART1 peripheral clock
RCC_PERIPHCLK_UART4 USART1 peripheral clock (only for devices with UART4)
RCC_PERIPHCLK_UART5 USART1 peripheral clock (only for devices with UART5)
RCC_PERIPHCLK_USB USB peripheral clock (only for devices with USB)

Note:: Care must be taken when HAL_RCCEx_PeriphCLKConfig() is used to select the RTC clock source: in this case the access to Backup domain is enabled.

Return values:

HAL status

Definition at line 203 of file stm32l4xx_hal_rcc_ex.c.

Functions

Detailed Description

Function Documentation