HAL Timer IRQ Handler

[daniel2]

Posted on July 10, 2015 at 22:34

I'm trying to configure Timer2, and I've initialized it as follows based on some sample code, but I'm not sure how I'm supposed to handle the IRQ it generates.

Usually I would use TIM2_IRQHandler for example, but some samples I see use HAL_TIM_IRQHandler. Can someone explain what this new function is for?

I'm also unable to check the status of the interrupt the way I used to using the TIM_GetITStatus function or clear the interrupt using TIM_ClearITPendingBit

void WS2812_Timer_Init(void)

{

TIM_HandleTypeDef    TimHandle;

uint16_t PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;;

__TIM2_CLK_ENABLE();

TimHandle.Instance = WS2812_Timer;

TimHandle.Init.Period             = Timer_Period;

TimHandle.Init.Prescaler         = PrescalerValue;

TimHandle.Init.ClockDivision     = 0;

TimHandle.Init.CounterMode       = TIM_COUNTERMODE_UP;

/* Initialize Timer */

HAL_TIM_Base_Init(&TimHandle);

/* Start Timer Interrupts */

HAL_TIM_Base_Start_IT(&TimHandle);

/*##-2- Configure the NVIC for TIMx ########################################*/

/* Set Interrupt Group Priority */

HAL_NVIC_SetPriority(WS2812_Timer_IRQ, 0, 1);

/* Enable the TIMx global Interrupt */

HAL_NVIC_EnableIRQ(WS2812_Timer_IRQ);

}

[Amel NASRI]

Posted on July 14, 2015 at 16:21

Hi bujak.dan,

It seems that you have some confusion between the Standard Peripheral Library (SPL) functions and the STM32Cube (HAL) ones.

In fact, TIM_GetITStatus  and the others are available in the SPL. The code you provided is based on HAL drivers.

Have a look to STM32Cube_FW_F4_V1.6.0\Projects\STM32F4-Discovery\Examples\TIM\TIM_TimeBase for example. The function handling TIM interrupt request is HAL_TIM_IRQHandler. You may replace TIM3 by TIM2 of course.

-Mayla-