timer1的中断入口设定（我用的DM6437）

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timer1的中断入口设定（我用的DM6437） [复制链接]

本来采用的timer0，但是它的PRD貌似不能更改，所以想采用timer1，但是却进不了中断了。我的设置中断向量表的程序如下：

 

*
* Copyright (C) 2003 Texas Instruments Incorporated
* All Rights Reserved
*
*
*---------vecs_timer1.asm---------
*
* Assembly file to set up interrupt service table (IST)
*

*------------------------------------------------------------------------------
* Global symbols defined here and exported out of this file
*------------------------------------------------------------------------------
   .global _vectors
   .global _c_int00
   .global _vector1
   .global _vector2
   .global _vector3
   .global _vector4
   .global _vector5
   .global _vector6
   .global _vector7
   .global _vector8
   .global _vector9  
   .global _vector10
   .global _vector11  
   .global _vector12 
   .global _vector13 

   .global _vector14  
   .global _extint7_isr  ; Hookup the c_int14 ISR in main()
   *------------------------------------------------------------------------------
* Global symbols referenced in this file but defined somewhere else.
* Remember that your interrupt service routines need to be referenced here.
*------------------------------------------------------------------------------
   .ref _c_int00
   .ref _extint14_isr  ; external interrupt INT 7 handler
*------------------------------------------------------------------------------
* This is a macro that instantiates one entry in the interrupt service table.
*------------------------------------------------------------------------------
VEC_ENTRY .macro addr
    STW   B0,*--B15
    MVKL  addr,B0
    MVKH  addr,B0
    B     B0
    LDW   *B15++,B0
    NOP   2
    NOP  
    NOP  
   .endm

*------------------------------------------------------------------------------
* This is a dummy interrupt service routine used to initialize the IST.
*------------------------------------------------------------------------------
_vec_dummy:
  B    B3
  NOP  5

*------------------------------------------------------------------------------
* This is the actual interrupt service table (IST). It is properly aligned and
* is located in the subsection .text:vecs. This means if you don't explicitly
* specify this section in your linker command file, it will default and link
* into the .text section. Remember to set the ISTP register to point to this
* table.
*------------------------------------------------------------------------------
 .sect ".vectors"
 ;.align 1024

_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 _vec_dummy
_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 _extint14_isr  ; Hookup the c_int14 ISR in main()

*------------------------------------------------------------------------------

然后在主程序中设置了

   IER=1;   /* disable all interrupts except NMI */
   ICR=0xffff;  /* clear all pending interrupts      */  
   ISTP = 0x10800400;
   INTC_EVTCLR0 = 0xFFFFFFFF;
   INTC_EVTCLR1 = 0xFFFFFFFF;
   INTC_EVTCLR2 = 0xFFFFFFFF;
   INTC_EVTCLR3 =  0xFFFFFFFF;  
   INTC_EVTMASK3 = 0xFFFFFFFF;
   INTC_EVTMASK2 = 0xFFFFFFFF;
   INTC_EVTMASK1 = 0xFFFFFFFF;
   INTC_EVTMASK0 = 0xFFFFFFEF;
   INTC_INTMUX3 = 0x00040000;
   IER |= 0x00008002;
并编写了中断程序interrupt void extint14_isr(void)

现在进不去中断程序，请各位大神赐教啊！！