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Example on MOOC about RTOS tickles doesn't works.

dhs
Senior

I am following an the example from MOOC;

https://www.youtube.com/watch?v=nSLN_WM2TOc&list=PLnMKNibPkDnExrAsDpjjF1PsvtoAIBquX&index=59&t=889s

I can't make it work, apparently LPTIM trigger interrupts continuously.

I create a fresh project to reproduce problem.

I tested two case, as you can see on code down below.

Case 1 works fine and blink the led in a predictable frequency

Case 2 doesn't works, MOOCs example fashion, led blink at high frequency, but the video works fine, what is wrong ? some one can reproduce example as in MOOC? it is a bug was introduced on later version of something? or I am doing something bad?

HAL_LPTIM_TimeOut_Start_IT(&hlptim1, 0xffff, 0); // case 1, works

 while (1)

 {

 //HAL_LPTIM_TimeOut_Start_IT(&hlptim1, 0xffff, 0); //case 2, doesn't work

 while(flag_lptim);

// HAL_LPTIM_TimeOut_Stop_IT(&hlptim1); //case 2, doesn't work

 flag_lptim = 1;

 HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);

  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

 }

/* USER CODE BEGIN 4 */

void HAL_LPTIM_CompareMatchCallback(LPTIM_HandleTypeDef *hlptim)

{

 flag_lptim = 0;

}

0693W00000WK1zXQAT.png

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