DISABLE/ENABLE EXTI interrupts using hal

[seed]

Posted on November 10, 2015 at 15:39

Hi,

I need to disable a EXTI interrupt and then enabling it again later. How can I do that using the hal implementation? I am working on STM32F070.

[ftiti]

Posted on November 11, 2015 at 15:17

You should use the Interrupt & Flag management macros existed in each peripheral .h file .

For example to manage DMA interrupts : __HAL_DMA_ENABLE_IT(__HANDLE__, __INTERRUPT__); __HAL_DMA_EDISABLE_IT(__HANDLE__, __INTERRUPT__); or TIM interrupts:   __HAL_TIM_ENABLE_IT(__HANDLE__, __INTERRUPT__);  __HAL_TIM_DISABLE_IT(__HANDLE__, __INTERRUPT__); CIAO

[seed]

Posted on November 11, 2015 at 16:30

Hi,

The EXTI does not work the same way since it share interrupt handler with other gpio pins. I have no handle to use. See code below. Call stack - EXTI4_15_IRQHandler - HAL_GPIO_EXTI_IRQHandler - HAL_GPIO_EXTI_Callback. I want to disable interrupt on GPIO_PIN_11 for a while, how do I do that? Or should I change the gpio mode? I can't find something like __HAL_GPIO_EXTI_DISABLE_IT(GPIO_Pin).. Gpio_Init(void) {  GPIO_InitTypeDef GPIO_InitStruct;   ...   __GPIOC_CLK_ENABLE();   /*Configure GPIO pin : PC11 */   GPIO_InitStruct.Pin = GPIO_PIN_11;   GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;   GPIO_InitStruct.Pull = GPIO_NOPULL;   GPIO_InitStruct.Speed = GPIO_SPEED_LOW;   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct)       /* EXTI interrupt init*/   HAL_NVIC_SetPriority(EXTI4_15_IRQn, 0, 0);   HAL_NVIC_EnableIRQ(EXTI4_15_IRQn); }     stm32f0xx_it.c /** * @brief This function handles EXTI line 4 to 15 interrupts. */ void EXTI4_15_IRQHandler(void) {   HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_11); } stm32f0xx_hal_gpio.c /**   * @brief  Handle EXTI interrupt request.   * @param  GPIO_Pin: Specifies the port pin connected to corresponding EXTI line.   * @retval None   */ void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin) {   /* EXTI line interrupt detected */   if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)   {     __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);     HAL_GPIO_EXTI_Callback(GPIO_Pin);   } } main.c /**   * @brief EXTI line detection callbacks   * @param GPIO_Pin: Specifies the pins connected EXTI line   * @retval None   */ void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {   if (GPIO_Pin == GPIO_PIN_11)   {     /* OK */   } }

[arik]

Posted on February 02, 2016 at 16:19

Hi,

Did you found a solution for that?How about disabling the IRQ with HAL_NVIC_DisableIRQ(EXTI4_15_IRQn) and then enabling it again when ever needed, of course it will disable all EXTI from 4 to 15 but it might help in your case.

[ABans.3]

You could use something like, on test port and test pin:

HAL_GPIO_DeInit(test_GPIO_Port,test_Pin);

// disable the interuupt

GPIO_InitTypeDef GPIO_InitStruct = {0};

GPIO_InitStruct.Pin = test_Pin;

GPIO_InitStruct.Pull = GPIO_PULLDOWN;

HAL_GPIO_Init(test_GPIO_Port, &GPIO_InitStruct); // initialize it again

This will disable the interrupt  on that pin. 

Thanks