ST STM32F31xx User Manual page 503

UM1581
Return values
Notes
22.2.16.4 TIM_ETRClockMode1Config
Function Name
Function Description
Parameters
Return values
Notes
22.2.16.5 TIM_ETRClockMode2Config
Function Name
Function Description
Parameters
value between 0x0 and 0xF.

None.

None.
void TIM_ETRClockMode1Config (
uint16_t TIM_ExtTRGPrescaler, uint16_t TIM_ExtTRGPolarity,
uint16_t ExtTRGFilter)
Configures the External clock Mode1.

TIMx : where x can be 1, 2, 3, 4 or 8 to select the TIM
peripheral.

TIM_ExtTRGPrescaler : The external Trigger Prescaler.
This parameter can be one of the following values:

TIM_ExtTRGPSC_OFF :

TIM_ExtTRGPSC_DIV2 :

TIM_ExtTRGPSC_DIV4 :

TIM_ExtTRGPSC_DIV8 :

TIM_ExtTRGPolarity : The external Trigger Polarity. This
parameter can be one of the following values:

TIM_ExtTRGPolarity_Inverted :
edge active.

TIM_ExtTRGPolarity_NonInverted :
rising edge active.

ExtTRGFilter : External Trigger Filter. This parameter must
be a value between 0x00 and 0x0F

None.

None.
void TIM_ETRClockMode2Config (
uint16_t TIM_ExtTRGPrescaler, uint16_t TIM_ExtTRGPolarity,
uint16_t ExtTRGFilter)
Configures the External clock Mode2.

TIMx : where x can be 1, 2, 3, 4 or 8 to select the TIM
DocID023800 Rev 1
General-purpose timers (TIM)
TIM_TypeDef * TIMx,
ETRP Prescaler OFF.
ETRP frequency divided by 2.
ETRP frequency divided by 4.
ETRP frequency divided by 8.
active low or falling
active high or
TIM_TypeDef * TIMx,
503/584