Collaboration diagram for RCC_Private_Functions:

Modules
	Internal and external clocks, PLL, CSS and MCO configuration functions
	Internal and external clocks, PLL, CSS and MCO configuration functions.
	System AHB and APB busses clocks configuration functions
	System, AHB and APB busses clocks configuration functions.
	Peripheral clocks configuration functions
	Peripheral clocks configuration functions.
	Interrupts and flags management functions
	Interrupts and flags management functions.
Functions
void	RCC_DeInit (void)
	Resets the RCC clock configuration to the default reset state.
void	RCC_HSEConfig (uint32_t RCC_HSE)
	Configures the External High Speed oscillator (HSE).
ErrorStatus	RCC_WaitForHSEStartUp (void)
	Waits for HSE start-up.
void	RCC_AdjustHSICalibrationValue (uint8_t HSICalibrationValue)
	Adjusts the Internal High Speed oscillator (HSI) calibration value.
void	RCC_HSICmd (FunctionalState NewState)
	Enables or disables the Internal High Speed oscillator (HSI).
void	RCC_PLLConfig (uint32_t RCC_PLLSource, uint32_t RCC_PLLMul)
	Configures the PLL clock source and multiplication factor.
void	RCC_PLLCmd (FunctionalState NewState)
	Enables or disables the PLL.
void	RCC_SYSCLKConfig (uint32_t RCC_SYSCLKSource)
	Configures the system clock (SYSCLK).
uint8_t	RCC_GetSYSCLKSource (void)
	Returns the clock source used as system clock.
void	RCC_HCLKConfig (uint32_t RCC_SYSCLK)
	Configures the AHB clock (HCLK).
void	RCC_PCLK1Config (uint32_t RCC_HCLK)
	Configures the Low Speed APB clock (PCLK1).
void	RCC_PCLK2Config (uint32_t RCC_HCLK)
	Configures the High Speed APB clock (PCLK2).
void	RCC_ITConfig (uint8_t RCC_IT, FunctionalState NewState)
	Enables or disables the specified RCC interrupts.
void	RCC_USBCLKConfig (uint32_t RCC_USBCLKSource)
	Configures the USB clock (USBCLK).
void	RCC_ADCCLKConfig (uint32_t RCC_PCLK2)
	Configures the ADC clock (ADCCLK).
void	RCC_LSEConfig (uint8_t RCC_LSE)
	Configures the External Low Speed oscillator (LSE).
void	RCC_LSICmd (FunctionalState NewState)
	Enables or disables the Internal Low Speed oscillator (LSI).
void	RCC_RTCCLKConfig (uint32_t RCC_RTCCLKSource)
	Configures the RTC clock (RTCCLK).
void	RCC_RTCCLKCmd (FunctionalState NewState)
	Enables or disables the RTC clock.
void	RCC_GetClocksFreq (RCC_ClocksTypeDef *RCC_Clocks)
	Returns the frequencies of different on chip clocks.
void	RCC_AHBPeriphClockCmd (uint32_t RCC_AHBPeriph, FunctionalState NewState)
	Enables or disables the AHB peripheral clock.
void	RCC_APB2PeriphClockCmd (uint32_t RCC_APB2Periph, FunctionalState NewState)
	Enables or disables the High Speed APB (APB2) peripheral clock.
void	RCC_APB1PeriphClockCmd (uint32_t RCC_APB1Periph, FunctionalState NewState)
	Enables or disables the Low Speed APB (APB1) peripheral clock.
void	RCC_APB2PeriphResetCmd (uint32_t RCC_APB2Periph, FunctionalState NewState)
	Forces or releases High Speed APB (APB2) peripheral reset.
void	RCC_APB1PeriphResetCmd (uint32_t RCC_APB1Periph, FunctionalState NewState)
	Forces or releases Low Speed APB (APB1) peripheral reset.
void	RCC_BackupResetCmd (FunctionalState NewState)
	Forces or releases the Backup domain reset.
void	RCC_ClockSecuritySystemCmd (FunctionalState NewState)
	Enables or disables the Clock Security System.
void	RCC_MCOConfig (uint8_t RCC_MCO)
	Selects the clock source to output on MCO pin.
FlagStatus	RCC_GetFlagStatus (uint8_t RCC_FLAG)
	Checks whether the specified RCC flag is set or not.
void	RCC_ClearFlag (void)
	Clears the RCC reset flags.
ITStatus	RCC_GetITStatus (uint8_t RCC_IT)
	Checks whether the specified RCC interrupt has occurred or not.
void	RCC_ClearITPendingBit (uint8_t RCC_IT)
	Clears the RCC�s interrupt pending bits.

Function Documentation

void RCC_DeInit ( void )

Resets the RCC clock configuration to the default reset state.

Parameters:

None

Return values:

None

References RCC.

void RCC_HSEConfig ( uint32_t RCC_HSE )

Configures the External High Speed oscillator (HSE).

Note:: HSE can not be stopped if it is used directly or through the PLL as system clock.

Parameters:

RCC_HSE,:

specifies the new state of the HSE. This parameter can be one of the following values:

RCC_HSE_OFF: HSE oscillator OFF
RCC_HSE_ON: HSE oscillator ON
RCC_HSE_Bypass: HSE oscillator bypassed with external clock

Return values:

None

References assert_param, CR_HSEBYP_Reset, CR_HSEBYP_Set, CR_HSEON_Reset, CR_HSEON_Set, IS_RCC_HSE, RCC, RCC_HSE_Bypass, and RCC_HSE_ON.

ErrorStatus RCC_WaitForHSEStartUp ( void )

Waits for HSE start-up.

Parameters:

None

Return values:

An	ErrorStatus enumuration value: SUCCESS: HSE oscillator is stable and ready to use ERROR: HSE oscillator not yet ready

References __IO, ERROR, HSE_STARTUP_TIMEOUT, RCC_FLAG_HSERDY, RCC_GetFlagStatus(), RESET, and SUCCESS.

Here is the call graph for this function:

void RCC_AdjustHSICalibrationValue ( uint8_t HSICalibrationValue )

Adjusts the Internal High Speed oscillator (HSI) calibration value.

Parameters:

HSICalibrationValue,: specifies the calibration trimming value. This parameter must be a number between 0 and 0x1F.

Return values:

None

References assert_param, CR_HSITRIM_Mask, IS_RCC_CALIBRATION_VALUE, and RCC.

void RCC_HSICmd ( FunctionalState NewState )

Enables or disables the Internal High Speed oscillator (HSI).

Note:: HSI can not be stopped if it is used directly or through the PLL as system clock.

Parameters:

NewState,: new state of the HSI. This parameter can be: ENABLE or DISABLE.

Return values:

None

References __IO, assert_param, CR_HSION_BB, and IS_FUNCTIONAL_STATE.

void RCC_PLLConfig	(	uint32_t	RCC_PLLSource,
		uint32_t	RCC_PLLMul
	)

Configures the PLL clock source and multiplication factor.

Note:: This function must be used only when the PLL is disabled.

Parameters:

RCC_PLLSource,:

specifies the PLL entry clock source. For STM32_Connectivity_line_devices or STM32_Value_line_devices, this parameter can be one of the following values:

RCC_PLLSource_HSI_Div2: HSI oscillator clock divided by 2 selected as PLL clock entry
RCC_PLLSource_PREDIV1: PREDIV1 clock selected as PLL clock entry For other_STM32_devices, this parameter can be one of the following values:
RCC_PLLSource_HSI_Div2: HSI oscillator clock divided by 2 selected as PLL clock entry
RCC_PLLSource_HSE_Div1: HSE oscillator clock selected as PLL clock entry
RCC_PLLSource_HSE_Div2: HSE oscillator clock divided by 2 selected as PLL clock entry

RCC_PLLMul,: specifies the PLL multiplication factor. For STM32_Connectivity_line_devices, this parameter can be RCC_PLLMul_x where x:{[4,9], 6_5} For other_STM32_devices, this parameter can be RCC_PLLMul_x where x:[2,16]

Return values:

None

References assert_param, CFGR_PLL_Mask, IS_RCC_PLL_MUL, IS_RCC_PLL_SOURCE, and RCC.

void RCC_PLLCmd ( FunctionalState NewState )

Enables or disables the PLL.

Note:: The PLL can not be disabled if it is used as system clock.

Parameters:

NewState,: new state of the PLL. This parameter can be: ENABLE or DISABLE.

Return values:

None

References __IO, assert_param, CR_PLLON_BB, and IS_FUNCTIONAL_STATE.

void RCC_SYSCLKConfig ( uint32_t RCC_SYSCLKSource )

Configures the system clock (SYSCLK).

Parameters:

RCC_SYSCLKSource,:

specifies the clock source used as system clock. This parameter can be one of the following values:

RCC_SYSCLKSource_HSI: HSI selected as system clock
RCC_SYSCLKSource_HSE: HSE selected as system clock
RCC_SYSCLKSource_PLLCLK: PLL selected as system clock

Return values:

None

References assert_param, CFGR_SW_Mask, IS_RCC_SYSCLK_SOURCE, and RCC.

uint8_t RCC_GetSYSCLKSource ( void )

Returns the clock source used as system clock.

Parameters:

None

Return values:

The	clock source used as system clock. The returned value can be one of the following: 0x00: HSI used as system clock 0x04: HSE used as system clock 0x08: PLL used as system clock

References CFGR_SWS_Mask, and RCC.

void RCC_HCLKConfig ( uint32_t RCC_SYSCLK )

Configures the AHB clock (HCLK).

Parameters:

RCC_SYSCLK,:

defines the AHB clock divider. This clock is derived from the system clock (SYSCLK). This parameter can be one of the following values:

RCC_SYSCLK_Div1: AHB clock = SYSCLK
RCC_SYSCLK_Div2: AHB clock = SYSCLK/2
RCC_SYSCLK_Div4: AHB clock = SYSCLK/4
RCC_SYSCLK_Div8: AHB clock = SYSCLK/8
RCC_SYSCLK_Div16: AHB clock = SYSCLK/16
RCC_SYSCLK_Div64: AHB clock = SYSCLK/64
RCC_SYSCLK_Div128: AHB clock = SYSCLK/128
RCC_SYSCLK_Div256: AHB clock = SYSCLK/256
RCC_SYSCLK_Div512: AHB clock = SYSCLK/512

Return values:

None

References assert_param, CFGR_HPRE_Reset_Mask, IS_RCC_HCLK, and RCC.

void RCC_PCLK1Config ( uint32_t RCC_HCLK )

Configures the Low Speed APB clock (PCLK1).

Parameters:

RCC_HCLK,:

defines the APB1 clock divider. This clock is derived from the AHB clock (HCLK). This parameter can be one of the following values:

RCC_HCLK_Div1: APB1 clock = HCLK
RCC_HCLK_Div2: APB1 clock = HCLK/2
RCC_HCLK_Div4: APB1 clock = HCLK/4
RCC_HCLK_Div8: APB1 clock = HCLK/8
RCC_HCLK_Div16: APB1 clock = HCLK/16

Return values:

None

References assert_param, CFGR_PPRE1_Reset_Mask, IS_RCC_PCLK, and RCC.

void RCC_PCLK2Config ( uint32_t RCC_HCLK )

Configures the High Speed APB clock (PCLK2).

Parameters:

RCC_HCLK,:

defines the APB2 clock divider. This clock is derived from the AHB clock (HCLK). This parameter can be one of the following values:

RCC_HCLK_Div1: APB2 clock = HCLK
RCC_HCLK_Div2: APB2 clock = HCLK/2
RCC_HCLK_Div4: APB2 clock = HCLK/4
RCC_HCLK_Div8: APB2 clock = HCLK/8
RCC_HCLK_Div16: APB2 clock = HCLK/16

Return values:

None

References assert_param, CFGR_PPRE2_Reset_Mask, IS_RCC_PCLK, and RCC.

void RCC_ITConfig	(	uint8_t	RCC_IT,
		FunctionalState	NewState
	)

Enables or disables the specified RCC interrupts.

Parameters:

RCC_IT,: specifies the RCC interrupt sources to be enabled or disabled.

For STM32_Connectivity_line_devices, this parameter can be any combination of the following values

RCC_IT_LSIRDY: LSI ready interrupt
RCC_IT_LSERDY: LSE ready interrupt
RCC_IT_HSIRDY: HSI ready interrupt
RCC_IT_HSERDY: HSE ready interrupt
RCC_IT_PLLRDY: PLL ready interrupt
RCC_IT_PLL2RDY: PLL2 ready interrupt
RCC_IT_PLL3RDY: PLL3 ready interrupt

For other_STM32_devices, this parameter can be any combination of the following values

RCC_IT_LSIRDY: LSI ready interrupt
RCC_IT_LSERDY: LSE ready interrupt
RCC_IT_HSIRDY: HSI ready interrupt
RCC_IT_HSERDY: HSE ready interrupt
RCC_IT_PLLRDY: PLL ready interrupt

Parameters:

NewState,: new state of the specified RCC interrupts. This parameter can be: ENABLE or DISABLE.

Return values:

None

References __IO, assert_param, CIR_BYTE2_ADDRESS, DISABLE, IS_FUNCTIONAL_STATE, and IS_RCC_IT.

void RCC_USBCLKConfig ( uint32_t RCC_USBCLKSource )

Configures the USB clock (USBCLK).

Parameters:

RCC_USBCLKSource,:

specifies the USB clock source. This clock is derived from the PLL output. This parameter can be one of the following values:

RCC_USBCLKSource_PLLCLK_1Div5: PLL clock divided by 1,5 selected as USB clock source
RCC_USBCLKSource_PLLCLK_Div1: PLL clock selected as USB clock source

Return values:

None

References __IO, assert_param, CFGR_USBPRE_BB, and IS_RCC_USBCLK_SOURCE.

void RCC_ADCCLKConfig ( uint32_t RCC_PCLK2 )

Configures the ADC clock (ADCCLK).

Parameters:

RCC_PCLK2,:

defines the ADC clock divider. This clock is derived from the APB2 clock (PCLK2). This parameter can be one of the following values:

RCC_PCLK2_Div2: ADC clock = PCLK2/2
RCC_PCLK2_Div4: ADC clock = PCLK2/4
RCC_PCLK2_Div6: ADC clock = PCLK2/6
RCC_PCLK2_Div8: ADC clock = PCLK2/8

Return values:

None

References assert_param, CFGR_ADCPRE_Reset_Mask, IS_RCC_ADCCLK, and RCC.

void RCC_LSEConfig ( uint8_t RCC_LSE )

Configures the External Low Speed oscillator (LSE).

Parameters:

RCC_LSE,:

specifies the new state of the LSE. This parameter can be one of the following values:

RCC_LSE_OFF: LSE oscillator OFF
RCC_LSE_ON: LSE oscillator ON
RCC_LSE_Bypass: LSE oscillator bypassed with external clock

Return values:

None

References __IO, assert_param, BDCR_ADDRESS, IS_RCC_LSE, RCC_LSE_Bypass, RCC_LSE_OFF, and RCC_LSE_ON.

void RCC_LSICmd ( FunctionalState NewState )

Enables or disables the Internal Low Speed oscillator (LSI).

Note:: LSI can not be disabled if the IWDG is running.

Parameters:

NewState,: new state of the LSI. This parameter can be: ENABLE or DISABLE.

Return values:

None

References __IO, assert_param, CSR_LSION_BB, and IS_FUNCTIONAL_STATE.

void RCC_RTCCLKConfig ( uint32_t RCC_RTCCLKSource )

Configures the RTC clock (RTCCLK).

Note:: Once the RTC clock is selected it can�t be changed unless the Backup domain is reset.

Parameters:

RCC_RTCCLKSource,:

specifies the RTC clock source. This parameter can be one of the following values:

RCC_RTCCLKSource_LSE: LSE selected as RTC clock
RCC_RTCCLKSource_LSI: LSI selected as RTC clock
RCC_RTCCLKSource_HSE_Div128: HSE clock divided by 128 selected as RTC clock

Return values:

None

References assert_param, IS_RCC_RTCCLK_SOURCE, and RCC.

void RCC_RTCCLKCmd ( FunctionalState NewState )

Enables or disables the RTC clock.

Note:: This function must be used only after the RTC clock was selected using the RCC_RTCCLKConfig function.

Parameters:

NewState,: new state of the RTC clock. This parameter can be: ENABLE or DISABLE.

Return values:

None

References __IO, assert_param, BDCR_RTCEN_BB, and IS_FUNCTIONAL_STATE.

void RCC_GetClocksFreq ( RCC_ClocksTypeDef * RCC_Clocks )

Returns the frequencies of different on chip clocks.

Parameters:

RCC_Clocks,: pointer to a RCC_ClocksTypeDef structure which will hold the clocks frequencies.

Return values:

None

References RCC_ClocksTypeDef::ADCCLK_Frequency, CFGR_ADCPRE_Set_Mask, CFGR_HPRE_Set_Mask, CFGR_PLLMull_Mask, CFGR_PLLSRC_Mask, CFGR_PLLXTPRE_Mask, CFGR_PPRE1_Set_Mask, CFGR_PPRE2_Set_Mask, CFGR_SWS_Mask, RCC_ClocksTypeDef::HCLK_Frequency, HSE_VALUE, HSI_VALUE, RCC_ClocksTypeDef::PCLK1_Frequency, RCC_ClocksTypeDef::PCLK2_Frequency, RCC, RESET, and RCC_ClocksTypeDef::SYSCLK_Frequency.

void RCC_AHBPeriphClockCmd	(	uint32_t	RCC_AHBPeriph,
		FunctionalState	NewState
	)

Enables or disables the AHB peripheral clock.

Parameters:

RCC_AHBPeriph,: specifies the AHB peripheral to gates its clock.

For STM32_Connectivity_line_devices, this parameter can be any combination of the following values:

RCC_AHBPeriph_DMA1
RCC_AHBPeriph_DMA2
RCC_AHBPeriph_SRAM
RCC_AHBPeriph_FLITF
RCC_AHBPeriph_CRC
RCC_AHBPeriph_OTG_FS
RCC_AHBPeriph_ETH_MAC
RCC_AHBPeriph_ETH_MAC_Tx
RCC_AHBPeriph_ETH_MAC_Rx

For other_STM32_devices, this parameter can be any combination of the following values:

RCC_AHBPeriph_DMA1
RCC_AHBPeriph_DMA2
RCC_AHBPeriph_SRAM
RCC_AHBPeriph_FLITF
RCC_AHBPeriph_CRC
RCC_AHBPeriph_FSMC
RCC_AHBPeriph_SDIO

Note:: SRAM and FLITF clock can be disabled only during sleep mode.

Parameters:

NewState,: new state of the specified peripheral clock. This parameter can be: ENABLE or DISABLE.

Return values:

None

References assert_param, DISABLE, IS_FUNCTIONAL_STATE, IS_RCC_AHB_PERIPH, and RCC.

void RCC_APB2PeriphClockCmd	(	uint32_t	RCC_APB2Periph,
		FunctionalState	NewState
	)

Enables or disables the High Speed APB (APB2) peripheral clock.

Parameters:

RCC_APB2Periph,:

specifies the APB2 peripheral to gates its clock. This parameter can be any combination of the following values:

RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB, RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE, RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1, RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1, RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3, RCC_APB2Periph_TIM15, RCC_APB2Periph_TIM16, RCC_APB2Periph_TIM17, RCC_APB2Periph_TIM9, RCC_APB2Periph_TIM10, RCC_APB2Periph_TIM11

NewState,: new state of the specified peripheral clock. This parameter can be: ENABLE or DISABLE.

Return values:

None

References assert_param, DISABLE, IS_FUNCTIONAL_STATE, IS_RCC_APB2_PERIPH, and RCC.

void RCC_APB1PeriphClockCmd	(	uint32_t	RCC_APB1Periph,
		FunctionalState	NewState
	)

Enables or disables the Low Speed APB (APB1) peripheral clock.

Parameters:

RCC_APB1Periph,:

specifies the APB1 peripheral to gates its clock. This parameter can be any combination of the following values:

RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4, RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7, RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3, RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4, RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2, RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP, RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_CEC, RCC_APB1Periph_TIM12, RCC_APB1Periph_TIM13, RCC_APB1Periph_TIM14

NewState,: new state of the specified peripheral clock. This parameter can be: ENABLE or DISABLE.

Return values:

None

References assert_param, DISABLE, IS_FUNCTIONAL_STATE, IS_RCC_APB1_PERIPH, and RCC.

void RCC_APB2PeriphResetCmd	(	uint32_t	RCC_APB2Periph,
		FunctionalState	NewState
	)

Forces or releases High Speed APB (APB2) peripheral reset.

Parameters:

RCC_APB2Periph,:

specifies the APB2 peripheral to reset. This parameter can be any combination of the following values:

RCC_APB2Periph_AFIO, RCC_APB2Periph_GPIOA, RCC_APB2Periph_GPIOB, RCC_APB2Periph_GPIOC, RCC_APB2Periph_GPIOD, RCC_APB2Periph_GPIOE, RCC_APB2Periph_GPIOF, RCC_APB2Periph_GPIOG, RCC_APB2Periph_ADC1, RCC_APB2Periph_ADC2, RCC_APB2Periph_TIM1, RCC_APB2Periph_SPI1, RCC_APB2Periph_TIM8, RCC_APB2Periph_USART1, RCC_APB2Periph_ADC3, RCC_APB2Periph_TIM15, RCC_APB2Periph_TIM16, RCC_APB2Periph_TIM17, RCC_APB2Periph_TIM9, RCC_APB2Periph_TIM10, RCC_APB2Periph_TIM11

NewState,: new state of the specified peripheral reset. This parameter can be: ENABLE or DISABLE.

Return values:

None

References assert_param, DISABLE, IS_FUNCTIONAL_STATE, IS_RCC_APB2_PERIPH, and RCC.

void RCC_APB1PeriphResetCmd	(	uint32_t	RCC_APB1Periph,
		FunctionalState	NewState
	)

Forces or releases Low Speed APB (APB1) peripheral reset.

Parameters:

RCC_APB1Periph,:

specifies the APB1 peripheral to reset. This parameter can be any combination of the following values:

RCC_APB1Periph_TIM2, RCC_APB1Periph_TIM3, RCC_APB1Periph_TIM4, RCC_APB1Periph_TIM5, RCC_APB1Periph_TIM6, RCC_APB1Periph_TIM7, RCC_APB1Periph_WWDG, RCC_APB1Periph_SPI2, RCC_APB1Periph_SPI3, RCC_APB1Periph_USART2, RCC_APB1Periph_USART3, RCC_APB1Periph_USART4, RCC_APB1Periph_USART5, RCC_APB1Periph_I2C1, RCC_APB1Periph_I2C2, RCC_APB1Periph_USB, RCC_APB1Periph_CAN1, RCC_APB1Periph_BKP, RCC_APB1Periph_PWR, RCC_APB1Periph_DAC, RCC_APB1Periph_CEC, RCC_APB1Periph_TIM12, RCC_APB1Periph_TIM13, RCC_APB1Periph_TIM14

NewState,: new state of the specified peripheral clock. This parameter can be: ENABLE or DISABLE.

Return values:

None

References assert_param, DISABLE, IS_FUNCTIONAL_STATE, IS_RCC_APB1_PERIPH, and RCC.

void RCC_BackupResetCmd ( FunctionalState NewState )

Forces or releases the Backup domain reset.

Parameters:

NewState,: new state of the Backup domain reset. This parameter can be: ENABLE or DISABLE.

Return values:

None

References __IO, assert_param, BDCR_BDRST_BB, and IS_FUNCTIONAL_STATE.

void RCC_ClockSecuritySystemCmd ( FunctionalState NewState )

Enables or disables the Clock Security System.

Parameters:

NewState,: new state of the Clock Security System.. This parameter can be: ENABLE or DISABLE.

Return values:

None

References __IO, assert_param, CR_CSSON_BB, and IS_FUNCTIONAL_STATE.

void RCC_MCOConfig ( uint8_t RCC_MCO )

Selects the clock source to output on MCO pin.

Parameters:

RCC_MCO,: specifies the clock source to output.

For STM32_Connectivity_line_devices, this parameter can be one of the following values:

RCC_MCO_NoClock: No clock selected
RCC_MCO_SYSCLK: System clock selected
RCC_MCO_HSI: HSI oscillator clock selected
RCC_MCO_HSE: HSE oscillator clock selected
RCC_MCO_PLLCLK_Div2: PLL clock divided by 2 selected
RCC_MCO_PLL2CLK: PLL2 clock selected
RCC_MCO_PLL3CLK_Div2: PLL3 clock divided by 2 selected
RCC_MCO_XT1: External 3-25 MHz oscillator clock selected
RCC_MCO_PLL3CLK: PLL3 clock selected

For other_STM32_devices, this parameter can be one of the following values:

RCC_MCO_NoClock: No clock selected
RCC_MCO_SYSCLK: System clock selected
RCC_MCO_HSI: HSI oscillator clock selected
RCC_MCO_HSE: HSE oscillator clock selected
RCC_MCO_PLLCLK_Div2: PLL clock divided by 2 selected

Return values:

None

References __IO, assert_param, CFGR_BYTE4_ADDRESS, and IS_RCC_MCO.

FlagStatus RCC_GetFlagStatus ( uint8_t RCC_FLAG )

Checks whether the specified RCC flag is set or not.

Parameters:

RCC_FLAG,: specifies the flag to check.

For STM32_Connectivity_line_devices, this parameter can be one of the following values:

RCC_FLAG_HSIRDY: HSI oscillator clock ready
RCC_FLAG_HSERDY: HSE oscillator clock ready
RCC_FLAG_PLLRDY: PLL clock ready
RCC_FLAG_PLL2RDY: PLL2 clock ready
RCC_FLAG_PLL3RDY: PLL3 clock ready
RCC_FLAG_LSERDY: LSE oscillator clock ready
RCC_FLAG_LSIRDY: LSI oscillator clock ready
RCC_FLAG_PINRST: Pin reset
RCC_FLAG_PORRST: POR/PDR reset
RCC_FLAG_SFTRST: Software reset
RCC_FLAG_IWDGRST: Independent Watchdog reset
RCC_FLAG_WWDGRST: Window Watchdog reset
RCC_FLAG_LPWRRST: Low Power reset

For other_STM32_devices, this parameter can be one of the following values:

RCC_FLAG_HSIRDY: HSI oscillator clock ready
RCC_FLAG_HSERDY: HSE oscillator clock ready
RCC_FLAG_PLLRDY: PLL clock ready
RCC_FLAG_LSERDY: LSE oscillator clock ready
RCC_FLAG_LSIRDY: LSI oscillator clock ready
RCC_FLAG_PINRST: Pin reset
RCC_FLAG_PORRST: POR/PDR reset
RCC_FLAG_SFTRST: Software reset
RCC_FLAG_IWDGRST: Independent Watchdog reset
RCC_FLAG_WWDGRST: Window Watchdog reset
RCC_FLAG_LPWRRST: Low Power reset

Return values:

The	new state of RCC_FLAG (SET or RESET).

References assert_param, FLAG_Mask, IS_RCC_FLAG, RCC, RESET, and SET.

void RCC_ClearFlag ( void )

Clears the RCC reset flags.

Note:: The reset flags are: RCC_FLAG_PINRST, RCC_FLAG_PORRST, RCC_FLAG_SFTRST, RCC_FLAG_IWDGRST, RCC_FLAG_WWDGRST, RCC_FLAG_LPWRRST

Parameters:

None

Return values:

None

References CSR_RMVF_Set, and RCC.

ITStatus RCC_GetITStatus ( uint8_t RCC_IT )

Checks whether the specified RCC interrupt has occurred or not.

Parameters:

RCC_IT,: specifies the RCC interrupt source to check.

For STM32_Connectivity_line_devices, this parameter can be one of the following values:

RCC_IT_LSIRDY: LSI ready interrupt
RCC_IT_LSERDY: LSE ready interrupt
RCC_IT_HSIRDY: HSI ready interrupt
RCC_IT_HSERDY: HSE ready interrupt
RCC_IT_PLLRDY: PLL ready interrupt
RCC_IT_PLL2RDY: PLL2 ready interrupt
RCC_IT_PLL3RDY: PLL3 ready interrupt
RCC_IT_CSS: Clock Security System interrupt

For other_STM32_devices, this parameter can be one of the following values:

RCC_IT_LSIRDY: LSI ready interrupt
RCC_IT_LSERDY: LSE ready interrupt
RCC_IT_HSIRDY: HSI ready interrupt
RCC_IT_HSERDY: HSE ready interrupt
RCC_IT_PLLRDY: PLL ready interrupt
RCC_IT_CSS: Clock Security System interrupt

Return values:

The	new state of RCC_IT (SET or RESET).

References assert_param, IS_RCC_GET_IT, RCC, RESET, and SET.

void RCC_ClearITPendingBit ( uint8_t RCC_IT )

Clears the RCC�s interrupt pending bits.

Parameters:

RCC_IT,: specifies the interrupt pending bit to clear.

For STM32_Connectivity_line_devices, this parameter can be any combination of the following values:

RCC_IT_LSIRDY: LSI ready interrupt
RCC_IT_LSERDY: LSE ready interrupt
RCC_IT_HSIRDY: HSI ready interrupt
RCC_IT_HSERDY: HSE ready interrupt
RCC_IT_PLLRDY: PLL ready interrupt
RCC_IT_PLL2RDY: PLL2 ready interrupt
RCC_IT_PLL3RDY: PLL3 ready interrupt
RCC_IT_CSS: Clock Security System interrupt

For other_STM32_devices, this parameter can be any combination of the following values:

RCC_IT_LSIRDY: LSI ready interrupt
RCC_IT_LSERDY: LSE ready interrupt
RCC_IT_HSIRDY: HSI ready interrupt
RCC_IT_HSERDY: HSE ready interrupt
RCC_IT_PLLRDY: PLL ready interrupt

RCC_IT_CSS: Clock Security System interrupt
Return values:

None

References __IO, assert_param, CIR_BYTE3_ADDRESS, and IS_RCC_CLEAR_IT.

Modules

Functions

Function Documentation