Interrupt Drivers

An interrupt driver, found in source files mcu_irq.c/.h is provided for each of the supported microcontrollers within the Embedded SDK. The driver provides methods for managing and receiving interrupt requests from the MCU.

The available interrupt sources are provided by the 'IRQ' enumeration defined within mcu_irq.h. The driver maintains an array of handler functions for each of the possible interrupt sources. Thus, interrupt handler functions must be registered with driver, using IRQ_RegisterHandler() function, prior to enabling them.

Basic Usage

#include "mcu_irq.h"
#include <assert.h>

static void APP_IrqHandler(void);                   /* Local interrupt handler */

void APP_Example(void)
{
    STATUS status;


    status = IRQ_RegisterHandler(IRQ_DMA,           /* Register a function to handle the DMA interrupt */
                                 APP_IrqHandler);   /* Function to handle the interrupt request */
    assert(status == SUCCESS);


    status = IRQ_Enable(IRQ_DMA);                   /* Enable the interrupt */
    assert(status == SUCCESS);
}

static void APP_IrqHandler(void)
{
    /* Process and clear the interrupt */
}