STM32F103 timer interrupts with HAL_TIM_PWM_PulseFinishedCallback and HAL_TIM_PeriodElapsedCallback does not work as intended

[MKanc.1]

I am trying to do a blink example for testing using built-in LED on bluepill. Unlike regular delay and period interrupts, i want to try a custom-duty blink, in which i want 3s on and 2s off, a total of 5s period.

in main:

 HAL_TIM_Base_Start_IT(&htim1);

 HAL_TIM_PWM_Start_IT(&htim1, TIM_CHANNEL_1);

callbacks:

void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)

{

   HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_RESET);

}

void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef * htim)

{

   HAL_GPIO_WritePin(GPIOC, GPIO_PIN_13, GPIO_PIN_SET);

}

does not work as intended. It just blinks once per period rapidly which is hard to catch. If i disable any of these callbacks, it blinks with period. What am i doing wrong?

[waclawek.jan]

> If i disable any of these callbacks, it blinks with period.

This doesn't make much sense - if only one of the interrupts work, there should be nothing which would switch off or switch on the LED, so it would remain lit/dark.

Read out and check/post content of TIM registers.

How is the PC13 pin set up in GPIO?

The PC13 pin is connected only to the LED, or is there any other connection?

JW

[MKanc.1]

Sorry, forgot to say, if i use single interrupt, i use toggling to blink over time.

PC13 is definitely LED and nothing else is connected.

I am using timer 1.