• #define F_CPU SystemCoreClock
• WEAK void SystemClock_Config(void)
• uint32_t HAL_RCC_GetSysClockFreq(void)
• uint32_t HAL_RCC_GetHCLKFreq(void)
• HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
• HAL_RCC_GetClockConfig

HAL_InitTick()

/* using SysTick */
__weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
{
  [...]
}

/* using TIM6 */
HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
{
  [...]
}

[...]

void TIM6_DAC_IRQHandler(void)
{
  HAL_TIM_IRQHandler(&TimHandle);
}

__weak void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)