int.c

这是一个实时的嵌入式操作系统的源代码

/*
* file:
*       int.c
* description:
*       interrupt controller code.
*/

void int_ctrl_init(void)
{
    rINTMOD = 0x00000000;
    rINTMSK = 0xffffffff;
    rINTSUBMSK = 0x000;
    rSUBSRCPND = 0x7ff;
    rSRCPND = 0xffffffff;
    rINTPND = 0xffffffff;
}


void int_ctrl_set_mode(int irq, int mode)
{
    if(mode)
        rINTMOD |= (0x01<<irq);
    else
        rINTMOD &= ~(0x01<<irq);
}


int int_ctrl_get_mode(int irq)
{
    return (rINTMOD & (0x1<<irq)) ? 1 : 0;
}


void int_ctrl_enable_irq(int irq, int enable)
{
    if(enable)
        rINTMSK &= ~(0x01<<irq);
    else
        rINTMSK |= (0x01<<irq);
}


/* end of file */