int.c

来自「这是一个实时的嵌入式操作系统的源代码」· C语言 代码 · 共 43 行

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

void int_ctrl_init(void)
{
    rINTCON = 0x04;
    rINTMOD = 0x00;
    rINTMSK = 0x03ffffff;
    rEXTINTPND = 0x0f;
    rI_ISPC = 0x03ffffff;
}


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 &= ~(BIT_GLOBAL|(0x01<<irq));
    else
        rINTMSK |= (0x01<<irq);
}


/* end of file */