Input Capture management functions. More...

Collaboration diagram for Input Capture management functions:

Functions
void	TIM_ICInit (TIM_TypeDef TIMx, TIM_ICInitTypeDef TIM_ICInitStruct)
	Initializes the TIM peripheral according to the specified parameters in the TIM_ICInitStruct. More...

void	TIM_ICStructInit (TIM_ICInitTypeDef *TIM_ICInitStruct)
	Fills each TIM_ICInitStruct member with its default value. More...

void	TIM_PWMIConfig (TIM_TypeDef TIMx, TIM_ICInitTypeDef TIM_ICInitStruct)
	Configures the TIM peripheral according to the specified parameters in the TIM_ICInitStruct to measure an external PWM signal. More...

uint32_t	TIM_GetCapture1 (TIM_TypeDef *TIMx)
	Gets the TIMx Input Capture 1 value. More...

uint32_t	TIM_GetCapture2 (TIM_TypeDef *TIMx)
	Gets the TIMx Input Capture 2 value. More...

uint32_t	TIM_GetCapture3 (TIM_TypeDef *TIMx)
	Gets the TIMx Input Capture 3 value. More...

uint32_t	TIM_GetCapture4 (TIM_TypeDef *TIMx)
	Gets the TIMx Input Capture 4 value. More...

void	TIM_SetIC1Prescaler (TIM_TypeDef *TIMx, uint16_t TIM_ICPSC)
	Sets the TIMx Input Capture 1 prescaler. More...

void	TIM_SetIC2Prescaler (TIM_TypeDef *TIMx, uint16_t TIM_ICPSC)
	Sets the TIMx Input Capture 2 prescaler. More...

void	TIM_SetIC3Prescaler (TIM_TypeDef *TIMx, uint16_t TIM_ICPSC)
	Sets the TIMx Input Capture 3 prescaler. More...

void	TIM_SetIC4Prescaler (TIM_TypeDef *TIMx, uint16_t TIM_ICPSC)
	Sets the TIMx Input Capture 4 prescaler. More...

Detailed Description

Input Capture management functions.

 ===============================================================================
                  ##### Input Capture management functions #####
 ===============================================================================  
         
            ##### TIM Driver: how to use it in Input Capture Mode #####
 ===============================================================================
    [..]    
    To use the Timer in Input Capture mode, the following steps are mandatory:
       
      (#) Enable TIM clock using RCC_APBxPeriphClockCmd(RCC_APBxPeriph_TIMx, ENABLE) 
          function
       
      (#) Configure the TIM pins by configuring the corresponding GPIO pins
       
      (#) Configure the Time base unit as described in the first part of this driver,
          if needed, else the Timer will run with the default configuration:
        (++) Autoreload value = 0xFFFF
        (++) Prescaler value = 0x0000
        (++) Counter mode = Up counting
        (++) Clock Division = TIM_CKD_DIV1
          
      (#) Fill the TIM_ICInitStruct with the desired parameters including:
        (++) TIM Channel: TIM_Channel
        (++) TIM Input Capture polarity: TIM_ICPolarity
        (++) TIM Input Capture selection: TIM_ICSelection
        (++) TIM Input Capture Prescaler: TIM_ICPrescaler
        (++) TIM Input CApture filter value: TIM_ICFilter
       
      (#) Call TIM_ICInit(TIMx, &TIM_ICInitStruct) to configure the desired channel 
          with the corresponding configuration and to measure only frequency 
          or duty cycle of the input signal, or, Call TIM_PWMIConfig(TIMx, &TIM_ICInitStruct) 
          to configure the desired channels with the corresponding configuration 
          and to measure the frequency and the duty cycle of the input signal
          
      (#) Enable the NVIC or the DMA to read the measured frequency. 
          
      (#) Enable the corresponding interrupt (or DMA request) to read the Captured 
          value, using the function TIM_ITConfig(TIMx, TIM_IT_CCx) 
          (or TIM_DMA_Cmd(TIMx, TIM_DMA_CCx)) 
       
      (#) Call the TIM_Cmd(ENABLE) function to enable the TIM counter.
       
      (#) Use TIM_GetCapturex(TIMx); to read the captured value.
       
      -@- All other functions can be used separately to modify, if needed,
          a specific feature of the Timer.

Function Documentation

uint32_t TIM_GetCapture1 ( TIM_TypeDef * TIMx )

Gets the TIMx Input Capture 1 value.

Parameters

TIMx	where x can be 1 to 14 except 6 and 7, to select the TIM peripheral.

Return values

Capture Compare 1 Register value.

Definition at line 2032 of file stm32f4xx_tim.c.

uint32_t TIM_GetCapture2 ( TIM_TypeDef * TIMx )

Gets the TIMx Input Capture 2 value.

Parameters

TIMx	where x can be 1, 2, 3, 4, 5, 8, 9 or 12 to select the TIM peripheral.

Return values

Capture Compare 2 Register value.

Definition at line 2047 of file stm32f4xx_tim.c.

uint32_t TIM_GetCapture3 ( TIM_TypeDef * TIMx )

Gets the TIMx Input Capture 3 value.

Parameters

TIMx	where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral.

Return values

Capture Compare 3 Register value.

Definition at line 2061 of file stm32f4xx_tim.c.

uint32_t TIM_GetCapture4 ( TIM_TypeDef * TIMx )

Gets the TIMx Input Capture 4 value.

Parameters

TIMx	where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral.

Return values

Capture Compare 4 Register value.

Definition at line 2075 of file stm32f4xx_tim.c.

void TIM_ICInit	(	TIM_TypeDef *	TIMx,
		TIM_ICInitTypeDef *	TIM_ICInitStruct
	)

Initializes the TIM peripheral according to the specified parameters in the TIM_ICInitStruct.

Parameters

TIMx	where x can be 1 to 14 except 6 and 7, to select the TIM peripheral.
TIM_ICInitStruct	pointer to a TIM_ICInitTypeDef structure that contains the configuration information for the specified TIM peripheral.

Return values

None

Definition at line 1900 of file stm32f4xx_tim.c.

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void TIM_ICStructInit ( TIM_ICInitTypeDef * TIM_ICInitStruct )

Fills each TIM_ICInitStruct member with its default value.

Parameters

TIM_ICInitStruct pointer to a TIM_ICInitTypeDef structure which will be initialized.

Return values

None

Definition at line 1956 of file stm32f4xx_tim.c.

void TIM_PWMIConfig	(	TIM_TypeDef *	TIMx,
		TIM_ICInitTypeDef *	TIM_ICInitStruct
	)

Configures the TIM peripheral according to the specified parameters in the TIM_ICInitStruct to measure an external PWM signal.

Parameters

TIMx	where x can be 1, 2, 3, 4, 5,8, 9 or 12 to select the TIM peripheral.
TIM_ICInitStruct	pointer to a TIM_ICInitTypeDef structure that contains the configuration information for the specified TIM peripheral.

Return values

None

Definition at line 1975 of file stm32f4xx_tim.c.

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void TIM_SetIC1Prescaler	(	TIM_TypeDef *	TIMx,
		uint16_t	TIM_ICPSC
	)

Sets the TIMx Input Capture 1 prescaler.

Parameters

TIMx	where x can be 1 to 14 except 6 and 7, to select the TIM peripheral.
TIM_ICPSC	specifies the Input Capture1 prescaler new value. This parameter can be one of the following values: TIM_ICPSC_DIV1: no prescaler TIM_ICPSC_DIV2: capture is done once every 2 events TIM_ICPSC_DIV4: capture is done once every 4 events TIM_ICPSC_DIV8: capture is done once every 8 events

Return values

None

Definition at line 2095 of file stm32f4xx_tim.c.

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void TIM_SetIC2Prescaler	(	TIM_TypeDef *	TIMx,
		uint16_t	TIM_ICPSC
	)

Sets the TIMx Input Capture 2 prescaler.

Parameters

TIMx	where x can be 1, 2, 3, 4, 5, 8, 9 or 12 to select the TIM peripheral.
TIM_ICPSC	specifies the Input Capture2 prescaler new value. This parameter can be one of the following values: TIM_ICPSC_DIV1: no prescaler TIM_ICPSC_DIV2: capture is done once every 2 events TIM_ICPSC_DIV4: capture is done once every 4 events TIM_ICPSC_DIV8: capture is done once every 8 events

Return values

None

Definition at line 2120 of file stm32f4xx_tim.c.

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void TIM_SetIC3Prescaler	(	TIM_TypeDef *	TIMx,
		uint16_t	TIM_ICPSC
	)

Sets the TIMx Input Capture 3 prescaler.

Parameters

TIMx	where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral.
TIM_ICPSC	specifies the Input Capture3 prescaler new value. This parameter can be one of the following values: TIM_ICPSC_DIV1: no prescaler TIM_ICPSC_DIV2: capture is done once every 2 events TIM_ICPSC_DIV4: capture is done once every 4 events TIM_ICPSC_DIV8: capture is done once every 8 events

Return values

None

Definition at line 2144 of file stm32f4xx_tim.c.

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void TIM_SetIC4Prescaler	(	TIM_TypeDef *	TIMx,
		uint16_t	TIM_ICPSC
	)

Sets the TIMx Input Capture 4 prescaler.

Parameters

TIMx	where x can be 1, 2, 3, 4, 5 or 8 to select the TIM peripheral.
TIM_ICPSC	specifies the Input Capture4 prescaler new value. This parameter can be one of the following values: TIM_ICPSC_DIV1: no prescaler TIM_ICPSC_DIV2: capture is done once every 2 events TIM_ICPSC_DIV4: capture is done once every 4 events TIM_ICPSC_DIV8: capture is done once every 8 events

Return values

None

Definition at line 2168 of file stm32f4xx_tim.c.

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Functions

Detailed Description

Function Documentation