dm642的中断 分类： DSP 2013-09-10 14:34 661人阅读 评论(0) 收藏

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