1.20.7.8 EVIC_ExternalInterruptCallbackRegister Function

C

bool EVIC_ExternalInterruptCallbackRegister(
EXTERNAL_INT_PIN extIntPin,
const EXTERNAL_INT_PIN_CALLBACK callback,
uintptr_t context
);

Allows application to register callback for every external interrupt pin.

This function allows application to register an event handling function for the PLIB to call back when external interrupt occurs on the selected pin.

At any point if application wants to stop the callback, it can call this function with "callback" value as NULL.

Corresponding pin interrupt must be enabled in EVIC manager.


Param	Description
extIntPin	One of the external interrupt pins from the enum EXTERNAL_INT_PIN
callback	Pointer to the event handler function implemented by the user
context	The value of parameter will be passed back to the application unchanged, when the eventHandler function is called. It can be used to identify any application specific value.

Callback registration status:

if(EVIC_ExternalInterruptCallbackRegister(EXTERNAL_INT_1, &APP_PinHandler, NULL))
{
    // callback got registered
}

None.