gpiohandler.c File Reference

#include <xinu.h>

Include dependency graph for gpiohandler.c:

Go to the source code of this file.

Functions
void	gpiohandler (uint32 xnum)

Function Documentation

gpiohandler()

void gpiohandler

(

uint32

xnum

)

Definition at line 9 of file gpiohandler.c.

References gpiocblk::gphookfn, GPIO0_BASE, GPIO0_INT_A, GPIO0_INT_B, GPIO1_BASE, GPIO1_INT_A, GPIO1_INT_B, GPIO2_BASE, GPIO2_INT_A, GPIO2_INT_B, GPIO3_BASE, GPIO3_INT_A, GPIO3_INT_B, gpiotab, gpio_csreg::irqstatus0, gpio_csreg::irqstatus1, and NULL.

{
    struct gpio_csreg *csrptr;  /* GPIO CSR pointer     */
    gpiointhook gphookfn;       /* The inerrupt function    */

    /* Clear all interrupts */

    if(xnum == GPIO0_INT_A) {
        csrptr = (struct gpio_csreg *)(GPIO0_BASE);
        gphookfn = gpiotab[0].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus0);
        csrptr->irqstatus0 = 0xFFFFFFFF;
        return;
    }
    if(xnum == GPIO0_INT_B) {
        csrptr = (struct gpio_csreg *)(GPIO0_BASE);
        gphookfn = gpiotab[0].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus1);
        csrptr->irqstatus1 = 0xFFFFFFFF;
        return;
    }

    if(xnum == GPIO1_INT_A) {
        csrptr = (struct gpio_csreg *)(GPIO1_BASE);
        gphookfn = gpiotab[1].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus0);
        csrptr->irqstatus0 = 0xFFFFFFFF;
        return;
    }
    if(xnum == GPIO1_INT_B) {
        csrptr = (struct gpio_csreg *)(GPIO1_BASE);
        gphookfn = gpiotab[1].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus1);
        csrptr->irqstatus1 = 0xFFFFFFFF;
        return;
    }

    if(xnum == GPIO2_INT_A) {
        csrptr = (struct gpio_csreg *)(GPIO2_BASE);
        gphookfn = gpiotab[2].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus0);
        csrptr->irqstatus0 = 0xFFFFFFFF;
        return;
    }
    if(xnum == GPIO2_INT_B) {
        csrptr = (struct gpio_csreg *)(GPIO2_BASE);
        gphookfn = gpiotab[2].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus1);
        csrptr->irqstatus1 = 0xFFFFFFFF;
        return;
    }

    if(xnum == GPIO3_INT_A) {
        csrptr = (struct gpio_csreg *)(GPIO3_BASE);
        gphookfn = gpiotab[3].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus0);
        csrptr->irqstatus0 = 0xFFFFFFFF;
        return;
    }
    if(xnum == GPIO3_INT_B) {
        csrptr = (struct gpio_csreg *)(GPIO3_BASE);
        gphookfn = gpiotab[3].gphookfn;
        if(gphookfn != NULL)
            gphookfn(xnum, csrptr->irqstatus1);
        csrptr->irqstatus1 = 0xFFFFFFFF;
        return;
    }
}