palEnablePadEvent

[omcdr]

I want to enable IRQ on GPIOA 0, there is my simple code:

Code: Select all

   palSetPadMode(GPIOA, 0,PAL_MODE_INPUT_PULLUP | PAL_STM32_OSPEED_HIGHEST);
   palSetPadCallback(GPIOA, 0, cbIrqA0, NULL);
   palEnablePadEvent(GPIOA, 0, PAL_EVENT_MODE_FALLING_EDGE);

but I got Assert in this line

Code: Select all

  osalDbgAssert(((EXTI->RTSR & padmask) == 0U) &&
                ((EXTI->FTSR & padmask) == 0U), "channel already in use");

Why ?
how to properly activate ext IRQ ?

[Giovanni]

Hi,

Do you have other channels enabled? you cannot activate an IRQ on the same bit of different ports.

Giovanni