RCC Exported Functions
- group RCC_Exported_Functions
Functions
-
void RCC_PeriphClockCmd(uint32_t APBPeriph, uint32_t APBPeriph_Clock, FunctionalState NewState)
Enable or disable the APB peripheral clock.
- Parameters:
APBPeriph – Specify the APB peripheral to gate its clock. This parameter can be one of the following values, refer to APB Peripheral Define.
APBPeriph_TIMER: The APB peripheral of TIMER.
APBPeriph_ENHTIMER: The APB peripheral of ENHTIMER.
APBPeriph_FLASH: The APB peripheral of FLASH.
APBPeriph_GDMA: The APB peripheral of GDMA.
APBPeriph_PKE: The APB peripheral of PKE.
APBPeriph_SHA256: The APB peripheral of SHA256.
APBPeriph_FLASH1: The APB peripheral of FLASH1.
APBPeriph_FLH_SEC: The APB peripheral of FLH_SEC.
APBPeriph_MODEM: The APB peripheral of MODEM.
APBPeriph_BLUEWIZ: The APB peripheral of BLUEWIZ.
APBPeriph_ZIGBEE: The APB peripheral of ZIGBEE.
APBPeriph_IF8080: The APB peripheral of IF8080.
APBPeriph_SPI2W: The APB peripheral of SPI2W.
APBPeriph_KEYSCAN: The APB peripheral of KEYSCAN.
APBPeriph_QDEC: The APB peripheral of QDEC.
APBPeriph_I2Cx: The APB peripheral of I2C, where x can be 0 to 1.
APBPeriph_IR: The APB peripheral of IR.
APBPeriph_SPIx: The APB peripheral of SPI, where x can be 0 to 1.
APBPeriph_UARTx: The APB peripheral of UART, where x can be 0 to 2.
APBPeriph_GPIO: The APB peripheral of GPIO.
APBPeriph_ADC: The APB peripheral of ADC.
APBPeriph_I2Sx: The APB peripheral of I2S, where x can be 0 to 1.
APBPeriph_CODEC: The APB peripheral of CODEC.
APBPeriph_Clock – Specify the APB peripheral clock config. This parameter can be one of the following values (must be the same with APBPeriph), refer to RCC Peripheral Clock.
APBPeriph_TIMER_CLOCK: The APB peripheral clock of TIMER.
APBPeriph_ENHTIMER_CLOCK: The APB peripheral clock of ENHTIMER.
APBPeriph_FLASH_CLOCK: The APB peripheral clock of FLASH.
APBPeriph_GDMA_CLOCK: The APB peripheral clock of GDMA.
APBPeriph_PKE_CLOCK: The APB peripheral clock of PKE.
APBPeriph_SHA256_CLOCK: The APB peripheral clock of SHA256.
APBPeriph_FLASH1_CLOCK: The APB peripheral clock of FLASH1.
APBPeriph_FLH_SEC_CLOCK: The APB peripheral clock of FLH_SEC.
APBPeriph_MODEM_CLOCK: The APB peripheral clock of MODEM.
APBPeriph_BLUEWIZ_CLOCK: The APB peripheral clock of BLUEWIZ.
APBPeriph_ZIGBEE_CLOCK: The APB peripheral clock of ZIGBEE.
APBPeriph_IF8080_CLOCK: The APB peripheral clock of IF8080.
APBPeriph_SPI2W_CLOCK: The APB peripheral clock of SPI2W.
APBPeriph_KEYSCAN_CLOCK: The APB peripheral clock of KEYSCAN.
APBPeriph_QDEC_CLOCK: The APB peripheral clock of QDEC.
APBPeriph_I2Cx_CLOCK: The APB peripheral clock of I2C, where x can be 0 to 1.
APBPeriph_IR_CLOCK: The APB peripheral clock of IR.
APBPeriph_SPIx_CLOCK: The APB peripheral clock of SPI, where x can be 0 to 1.
APBPeriph_UARTx_CLOCK: The APB peripheral clock of UART, where x can be 0 to 2.
APBPeriph_GPIO_CLOCK: The APB peripheral clock of GPIO.
APBPeriph_ADC_CLOCK: The APB peripheral clock of ADC.
APBPeriph_I2Sx_CLOCK: The APB peripheral clock of I2S, where x can be 0 to 1.
APBPeriph_CODEC_CLOCK: The APB peripheral clock of CODEC.
NewState – New state of the specified peripheral clock. This parameter can be: ENABLE or DISABLE.
- Returns:
None.
-
void RCC_I2CClkDivConfig(I2C_TypeDef *I2Cx, uint16_t ClockDiv)
Configure the I2C clock divider.
- Parameters:
I2Cx – Where x can be 0 or 1 to select the I2C peripheral.
ClockDiv – Specify the APB peripheral to gate its clock. This parameter can be one of the following values, refer to I2C Clock Divider.
I2C_CLOCK_DIV_1
I2C_CLOCK_DIV_2
I2C_CLOCK_DIV_4
I2C_CLOCK_DIV_8
- Returns:
None.
-
void RCC_SPIClkDivConfig(SPI_TypeDef *SPIx, uint16_t ClockDiv)
Configure the SPI clock divider.
- Parameters:
SPIx – Where x can be 0 or 1 to select the SPI peripheral.
ClockDiv – Specify the APB peripheral to gate its clock. This parameter can be one of the following values, refer to SPI Clock Divider.
SPI_CLOCK_DIV_1
SPI_CLOCK_DIV_2
SPI_CLOCK_DIV_4
SPI_CLOCK_DIV_8
- Returns:
None.
-
void RCC_TIMClkDivConfig(E_TIM_NUM TIMx, uint16_t ClockDiv)
Configure the TIMER and ENH-TIMER clock divider.
- Parameters:
TIMx – selected TIM number.
ClockDiv – Specify the APB peripheral to gate its clock. This parameter can be one of the following values, refer to TIM Clock Divider.
TIM_CLOCK_DIV_1
TIM_CLOCK_DIV_125
TIM_CLOCK_DIV_2
TIM_CLOCK_DIV_4
TIM_CLOCK_DIV_8
TIM_CLOCK_DIV_40
- Returns:
None
-
void RCC_UARTClkDivConfig(UART_TypeDef *UARTx, uint16_t ClockDiv)
Configure the UART clock divider.
- Parameters:
UARTx – Selected UART peripheral.
ClockDiv – Specify the APB peripheral to gate its clock. This parameter can be one of the following values, refer to UART Clock Divider.
UART_CLOCK_DIV_1
UART_CLOCK_DIV_2
UART_CLOCK_DIV_4
UART_CLOCK_DIV_16
- Returns:
None.
-
void RCC_PeriFunctionConfig(uint32_t APBPeriph, FunctionalState NewState)
Enable or disable the APB peripheral function.
- Parameters:
APBPeriph – Specify the APB peripheral. This parameter can be one of the following values, refer to APB Peripheral Define.
APBPeriph_TIMER
APBPeriph_ENHTIMER
APBPeriph_FLASH
APBPeriph_GDMA
APBPeriph_PKE
APBPeriph_SHA256
APBPeriph_FLASH1
APBPeriph_FLH_SEC
APBPeriph_MODEM
APBPeriph_BLUEWIZ
APBPeriph_ZIGBEE
APBPeriph_IF8080
APBPeriph_SPI2W
APBPeriph_KEYSCAN
APBPeriph_QDEC
APBPeriph_I2C1
APBPeriph_I2C0
APBPeriph_IR
APBPeriph_SPI1
APBPeriph_SPI0
APBPeriph_UART0
APBPeriph_UART1
APBPeriph_UART2
APBPeriph_GPIO
APBPeriph_ADC
APBPeriph_I2S0
APBPeriph_I2S1
APBPeriph_CODEC
NewState – New state of the specified peripheral clock. This parameter can be: ENABLE or DISABLE.
- Returns:
None.
-
void RCC_PeriClockConfig(uint32_t APBPeriph_Clock, FunctionalState NewState)
Enable or disable the APB peripheral clock.
- Parameters:
APBPeriph_Clock – Specify the APB peripheral clock config. This parameter can be one of the following values (must be the same with APBPeriph), refer to RCC Peripheral Clock.
APBPeriph_TIMER_CLOCK
APBPeriph_ENHTIMER_CLOCK
APBPeriph_FLASH_CLOCK
APBPeriph_GDMA_CLOCK
APBPeriph_PKE_CLOCK
APBPeriph_SHA256_CLOCK
APBPeriph_FLASH1_CLOCK
APBPeriph_FLH_SEC_CLOCK
APBPeriph_MODEM_CLOCK
APBPeriph_BLUEWIZ_CLOCK
APBPeriph_ZIGBEE_CLOCK
APBPeriph_IF8080_CLOCK
APBPeriph_SPI2W_CLOCK
APBPeriph_KEYSCAN_CLOCK
APBPeriph_QDEC_CLOCK
APBPeriph_I2C1_CLOCK
APBPeriph_I2C0_CLOCK
APBPeriph_IR_CLOCK
APBPeriph_SPI1_CLOCK
APBPeriph_SPI0_CLOCK
APBPeriph_UART0_CLOCK
APBPeriph_UART1_CLOCK
APBPeriph_UART2_CLOCK
APBPeriph_GPIO_CLOCK
APBPeriph_ADC_CLOCK
APBPeriph_I2S0_CLOCK
APBPeriph_I2S1_CLOCK
APBPeriph_CODEC_CLOCK
NewState – New state of the specified peripheral clock. This parameter can be: ENABLE or DISABLE.
- Returns:
None.
-
void RCC_ClockSrc5MCmd(void)
Enables the 5M clock source.
- Returns:
None.
-
void RCC_ClockSrc10MCmd(void)
Enables the 10M clock source.
- Returns:
None.
-
void RCC_ClockSrc20MCmd(void)
Enables the 20M clock source.
- Returns:
None.
-
void RCC_PeriphClockCmd(uint32_t APBPeriph, uint32_t APBPeriph_Clock, FunctionalState NewState)