Peripheral clocks configuration functions. More...

Functions
void	CLK_BEEPClockConfig (CLK_BEEPCLKSource_TypeDef CLK_BEEPCLKSource)
	Configures the BEEP clock (BEEPCLK).
void	CLK_PeripheralClockConfig (CLK_Peripheral_TypeDef CLK_Peripheral, FunctionalState NewState)
	Enables or disables the specified peripheral clock.
void	CLK_RTCClockConfig (CLK_RTCCLKSource_TypeDef CLK_RTCCLKSource, CLK_RTCCLKDiv_TypeDef CLK_RTCCLKDiv)
	Configures the RTC clock (RTCCLK).

Detailed Description

Peripheral clocks configuration functions.

 ===============================================================================
                   Peripheral clocks configuration functions
 ===============================================================================  

  This section provides functions allowing to configure the Peripheral clocks. 
  
  1. The RTC clock which is derived from the LSI, LSE, HSI or HSE clock divided by 1 to 64.
     
  2. The BEEP clock which is derived from the LSI or LSE clocks.

  3. After restart from Reset or wakeup from HALT, all peripherals are off
     Before to start using a peripheral you have to enable its interface clock. 
     You can do this using CLK_AHBPeriphClockCmd()
     , CLK_APB2PeriphClockCmd() and CLK_APB1PeriphClockCmd() functions.
     
  4. To reset the peripherals configuration (to the default state after device reset)
     you can use CLK_PeripheralClockConfig() function.

Function Documentation

void CLK_BEEPClockConfig ( CLK_BEEPCLKSource_TypeDef CLK_BEEPCLKSource )

Configures the BEEP clock (BEEPCLK).

Parameters:

CLK_BEEPCLKSource,:

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

CLK_BEEPCLKSource_Off: BEEP clock Off
CLK_BEEPCLKSource_LSE: LSE selected as BEEP clock
CLK_BEEPCLKSource_LSI: LSI selected as BEEP clock

Return values:

None

Definition at line 629 of file stm8l15x_clk.c.

References CLK, and IS_CLK_CLOCK_BEEP.

void CLK_PeripheralClockConfig	(	CLK_Peripheral_TypeDef	CLK_Peripheral,
		FunctionalState	NewState
	)

Enables or disables the specified peripheral clock.

Note:: After reset, the peripheral clock (used for registers read/write access) is disabled and the application software has to enable this clock before using it.

Parameters:

CLK_Peripheral,:

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

CLK_Peripheral_TIM2: TIM2 clock
CLK_Peripheral_TIM3: TIM3 clock
CLK_Peripheral_TIM4: TIM4 clock
CLK_Peripheral_I2C1: I2C1 clock
CLK_Peripheral_SPI1: SPI1 clock
CLK_Peripheral_USART1: USART1 clock
CLK_Peripheral_BEEP: BEEP clock
CLK_Peripheral_DAC: DAC clock
CLK_Peripheral_ADC1: ADC1 clock
CLK_Peripheral_TIM1: TIM1 clock
CLK_Peripheral_RTC: RTC clock
CLK_Peripheral_LCD: LCD clock
CLK_Peripheral_DMA1: DMA1 clock
CLK_Peripheral_COMP: COMP clock
CLK_Peripheral_BOOTROM: BOOTROM clock
CLK_Peripheral_AES: AES clock
CLK_Peripheral_TIM5: TIM5 clock
CLK_Peripheral_SPI2: SPI2 clock
CLK_Peripheral_USART2: USART2 clock
CLK_Peripheral_USART3: USART3 clock
CLK_Peripheral_CSSLSE: CSS on LSE clock

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

Return values:

None

Definition at line 671 of file stm8l15x_clk.c.

References CLK, DISABLE, IS_CLK_PERIPHERAL, and IS_FUNCTIONAL_STATE.

void CLK_RTCClockConfig	(	CLK_RTCCLKSource_TypeDef	CLK_RTCCLKSource,
		CLK_RTCCLKDiv_TypeDef	CLK_RTCCLKDiv
	)

Configures the RTC clock (RTCCLK).

Parameters:

CLK_RTCCLKSource,:	specifies the RTC clock source. This parameter can be one of the following values: CLK_RTCCLKSource_Off: RTC clock Off CLK_RTCCLKSource_LSE: LSE selected as RTC clock CLK_RTCCLKSource_LSI: LSI selected as RTC clock CLK_RTCCLKSource_HSE: HSE selected as RTC clock CLK_RTCCLKSource_HSI: HSI selected as RTC clock
CLK_RTCCLKDiv,:	specifies the RTC clock source divider. This parameter can be one of the following values: CLK_RTCCLKDiv_1: Clock RTC Div 1 CLK_RTCCLKDiv_2: Clock RTC Div 2 CLK_RTCCLKDiv_4: Clock RTC Div 4 CLK_RTCCLKDiv_8: Clock RTC Div 8 CLK_RTCCLKDiv_16: Clock RTC Div 16 CLK_RTCCLKDiv_32: Clock RTC Div 32 CLK_RTCCLKDiv_64: Clock RTC Div 64

Note:: If the LSE or LSI is used as RTC clock source, the RTC continues to work in HALT and Active HALT modes, and can be used as wakeup source. However, when the HSE clock is used as RTC clock source.; The maximum input clock frequency for RTC is 1MHz (when using HSE/HSI as RTC clock source).

Return values:

None

Definition at line 610 of file stm8l15x_clk.c.

References CLK, IS_CLK_CLOCK_RTC, and IS_CLK_CLOCK_RTC_DIV.

STM8L15x Standard Peripherals Drivers: Peripheral clocks configuration functions

STM8L15x/16x Standard Peripherals Drivers

Peripheral clocks configuration functions

Functions

Detailed Description

Function Documentation

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