CODEWITHSUNDEEP
c++stm32hal
Aster
Aster

Reputation: 11

STM32 and HAL function GetTick()

Implicit declaration of function 'HAL_GetTick'. Can you tell me or give me a link for library, where I can find declaration of this function.

Upvotes: 0

Views: 4980

Answers (1)

Spyros Mourelatos
Spyros Mourelatos

Reputation: 533

The function is nearly the same at every device I am currently working on an F4 so I will provide the definition I have :

/**
  * @brief Provides a tick value in millisecond.
  * @note This function is declared as __weak to be overwritten in case of other 
  *       implementations in user file.
  * @retval tick value
  */
__weak uint32_t HAL_GetTick(void)
{
  return uwTick;
}

The obvious question is what the hell is uwTick? it is just a volatile uint_32 that get incremented whenever the HAL_IncTick is called. The Hal_IncTick is called from the SysTickHandler that is called as an interrupt.

Upvotes: 1

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