dm642的中断

来源：互联网发布：evdo是什么网络编辑：程序博客网时间：2024/05/17 04:57

void fifoint_isr();
extern far void vectors();

void int_init()
{
IRQ_resetAll();
IRQ_setVecs(vectors);
IRQ_nmiEnable();
IRQ_globalEnable();

//
IRQ_reset(IRQ_EVT_EXTINT4);
IRQ_enable(IRQ_EVT_EXTINT4);
*(Uint32*)(0x019c0008) = 1;//中断条件 0上升，1下降
*(unsigned short*)EPLE_TEST = 0X0;
IRQ_clear(IRQ_EVT_EXTINT4);
}

interrupt void fifoint_isr()
{

IRQ_disable(IRQ_EVT_EXTINT4);
//
com_isr232();
//
IRQ_clear(IRQ_EVT_EXTINT4);
IRQ_enable(IRQ_EVT_EXTINT4);
}

//修改vector.asm
   .global _vectors
   .global _c_int00
   .global _vector1
   .global _vector2
   .global _vector3
   .global _fifoint_isr
   .global _vector5
   .global _vector6
   .global _vector7
   .global _vector8
   .global _vector9
   .global _vector10
   .global _vector11
   .global _vector12
   .global _vector13
   .global _vector14
   .global _vector15

_vectors:
_vector0:   VEC_ENTRY _c_int00    ;RESET
_vector1:   VEC_ENTRY _vec_dummy ;NMI
_vector2:   VEC_ENTRY _vec_dummy ;RSVD
_vector3:   VEC_ENTRY _vec_dummy
_vector4:   VEC_ENTRY _fifoint_isr
_vector5:   VEC_ENTRY _vec_dummy
_vector6:   VEC_ENTRY _vec_dummy
_vector7:   VEC_ENTRY _vec_dummy
_vector8:   VEC_ENTRY _vec_dummy
_vector9:   VEC_ENTRY _vec_dummy
_vector10: VEC_ENTRY _vec_dummy
_vector11: VEC_ENTRY _vec_dummy
_vector12: VEC_ENTRY _vec_dummy
_vector13: VEC_ENTRY _vec_dummy
_vector14: VEC_ENTRY _vec_dummy
_vector15: VEC_ENTRY _vec_dummy