Using multiple GPIO interupts with STM32L053 Nucleo board

Posted on September 16, 2014 at 13:54

I am trying to use multiple interupts on my nucleo board. I have used the cube hal. My problem is that I dont get the interrupts generated on the PB0 pin, but the PB1 works ok.

I have tried to do the intialization in different order and it seems like it works better, but I dont understand why the HAL needs calls in a specific order.

My code to initialize the interrupts are based on the GPIO_EXTI example:

static void EXTI_Config(void)

{

  GPIO_InitTypeDef   GPIO_InitStructure;

  /* Enable GPIOB clock */

  __GPIOB_CLK_ENABLE();

  /* Configure PB0 pin  */

  GPIO_InitStructure.Mode = GPIO_MODE_IT_FALLING;

  GPIO_InitStructure.Pull = GPIO_PULLUP;

  GPIO_InitStructure.Pin = GPIO_PIN_0;

    GPIO_InitStructure.Speed = GPIO_SPEED_FAST;

  HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);

    

    

  /* Configure PB1 pin  */

  GPIO_InitStructure.Mode = GPIO_MODE_IT_FALLING;

  GPIO_InitStructure.Pull = GPIO_PULLUP;

  GPIO_InitStructure.Pin = GPIO_PIN_1;

  GPIO_InitStructure.Speed = GPIO_SPEED_FAST;

  HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);

    

  /* Enable and set EXTI  Interrupt to the lowest priority */

  HAL_NVIC_SetPriority(EXTI0_1_IRQn, 3, 0);

  HAL_NVIC_EnableIRQ(EXTI0_1_IRQn);

}