how to change an external interrupt level on its interrupt

[Hossein Golshik]

Posted on November 27, 2017 at 10:40

hi,

I set external interrupt 3 on cubemx to Rising edge and need to change of trigger level that on its routine.

I write this code on interrupt 3 routine, but it always trigger by rising edge (down't execute falling edge) (PLEASE: see attach image)

how can I fix this problem with HAL driver command?

void EXTI3_IRQHandler(void)

{  /* USER CODE BEGIN EXTI3_IRQn 0 */switch(valuee){    case 10:    HAL_GPIO_WritePin(RLED_GPIO_Port,RLED_Pin, GPIO_PIN_SET);    CLEAR_BIT(EXTI->RTSR,0X03);    SET_BIT(EXTI->FTSR,0X03);    valuee=15;    break;        case 15:    HAL_GPIO_WritePin(RLED_GPIO_Port,RLED_Pin, GPIO_PIN_RESET);    CLEAR_BIT(EXTI->FTSR,0X03);    SET_BIT(EXTI->RTSR,0X03);    valuee=10;

    break;

}  /* USER CODE END EXTI3_IRQn 0 */  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_3);  /* USER CODE BEGIN EXTI3_IRQn 1 */

  /* USER CODE END EXTI3_IRQn 1 */

}#cubemx-4.18 #interrput #rising-edge

[Hossein Golshik · Accepted solution]

Posted on November 27, 2017 at 12:01

I use

CLEAR_BIT(EXTI->RTSR,EXTI_RTSR_TR3);

 SET_BIT(EXTI->FTSR,EXTI_FTSR_TR3);

istead of :

CLEAR_BIT(EXTI->RTSR,0X03);

SET_BIT(EXTI->FTSR,0X03);

then, my problem is solved