interrupt problem

[Ala]

Hi there

I am using a STM32F103C8T6. I defined this pins as External Interrupt:

PB4 - GPIO_MODE_IT_RISING

PC13-GPIO_MODE_IT_RISING_FALLING

PC14-GPIO_MODE_IT_RISING_FALLING

PC15-GPIO_MODE_IT_RISING_FALLING

the problem is that every time I SET/RESET PB4, it goes into PC13-15 interrupt callbacks.

here is the code

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	//L_MCU Interrupt
if((GPIO_Pin==GPIO_PIN_13 || GPIO_Pin==GPIO_PIN_14 || GPIO_Pin==GPIO_PIN_15) && stL_MCU==true)
    {
		  HAL_TIM_Base_Start_IT(&htim2);
			stL_MCU=false;
	}
	
	else
	{
			__NOP();
	}
	
}

for extra care I set another condition in the above code (&& stL_MCU==true), but I don't know why it enters this interrupt, any clue?

[MM..1]

Have you this in it file and too for IRQ4 ?

/**

 * @brief This function handles EXTI line[15:10] interrupts.

 */

void EXTI15_10_IRQHandler(void)

{

 /* USER CODE BEGIN EXTI15_10_IRQn 0 */

 /* USER CODE END EXTI15_10_IRQn 0 */

 HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_13);

 HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_14);

 HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_15);

 /* USER CODE BEGIN EXTI15_10_IRQn 1 */

 /* USER CODE END EXTI15_10_IRQn 1 */

}

[Ala]

Dear MM..1

yes I do have these for All of pins

[MM..1]

Realy this HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_13);

you dont change to callback?

[Ala]

@MM..1​ 

I dont get what you mean?

"Realy this HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_13);"

above code shows how I changed the EXTI Call back

[MM..1]

I write about HAL levels when IRQ occured as first it jump

EXTI15_10_IRQHandler

here call

HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_13)

here check and clear flags and if this gpio have flag call

HAL_GPIO_EXTI_Callback

and i ask hav eyou realy in IRQHandler bold function name?

[TDK]

> PB4 - GPIO_MODE_IT_RISING

> the problem is that every time I SET/RESET PB4, it goes into PC13-15 interrupt callbacks.

> here is the code

> void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)

The HAL_GPIO_EXTI_Callback function isn't specific to PC13-15. It'll get called for PB4 if it's enabled as an interrupt.

It could also be that you're getting noise on these lines due to crosstalk. How are they connected in hardware?