PieVectorTable的初始化

只看该作者 · 2013-3-18 14:43

#include "DSP28_Device.h"

const struct PIE_VECT_TABLE PieVectTableInit = {

   PIE_RESERVED,  // Reserved space
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,
   PIE_RESERVED,

// Non-Peripheral Interrupts
   INT13_ISR,    // XINT13 or CPU-Timer 1
   INT14_ISR,    // CPU-Timer2
   DATALOG_ISR, // Datalogging interrupt
   RTOSINT_ISR, // RTOS interrupt
   EMUINT_ISR, // Emulation interrupt
   NMI_ISR,    // Non-maskable interrupt
   ILLEGAL_ISR, // Illegal operation TRAP
   USER0_ISR,    // User Defined trap 0
   USER1_ISR,    // User Defined trap 1
   USER2_ISR,    // User Defined trap 2
   USER3_ISR,    // User Defined trap 3
   USER4_ISR,    // User Defined trap 4
   USER5_ISR,    // User Defined trap 5
   USER6_ISR,    // User Defined trap 6
   USER7_ISR,    // User Defined trap 7
   USER8_ISR,    // User Defined trap 8
   USER9_ISR,    // User Defined trap 9
   USER10_ISR, // User Defined trap 10
   USER11_ISR, // User Defined trap 11

// Group 1 PIE Vectors
   PDPINTA_ISR, // EV-A
   PDPINTB_ISR, // EV-B
   rsvd_ISR,
   XINT1_ISR,
   XINT2_ISR,
   ADCINT_ISR, // ADC
   TINT0_ISR,    // Timer 0
   WAKEINT_ISR, // WD

// Group 2 PIE Vectors
   CMP1INT_ISR, // EV-A
   CMP2INT_ISR, // EV-A
   CMP3INT_ISR, // EV-A
   T1PINT_ISR, // EV-A
   T1CINT_ISR, // EV-A
   T1UFINT_ISR, // EV-A
   T1OFINT_ISR, // EV-A
   rsvd_ISR,

// Group 3 PIE Vectors
   T2PINT_ISR, // EV-A
   T2CINT_ISR, // EV-A
   T2UFINT_ISR, // EV-A
   T2OFINT_ISR, // EV-A
   CAPINT1_ISR, // EV-A
   CAPINT2_ISR, // EV-A
   CAPINT3_ISR, // EV-A
   rsvd_ISR,

// Group 4 PIE Vectors
   CMP4INT_ISR, // EV-B
   CMP5INT_ISR, // EV-B
   CMP6INT_ISR, // EV-B
   T3PINT_ISR, // EV-B
   T3CINT_ISR, // EV-B
   T3UFINT_ISR, // EV-B
   T3OFINT_ISR, // EV-B
   rsvd_ISR,

// Group 5 PIE Vectors
   T4PINT_ISR, // EV-B
   T4CINT_ISR, // EV-B
   T4UFINT_ISR, // EV-B
   T4OFINT_ISR, // EV-B
   CAPINT4_ISR, // EV-B
   CAPINT5_ISR, // EV-B
   CAPINT6_ISR, // EV-B
   rsvd_ISR,

// Group 6 PIE Vectors
   SPIRXINTA_ISR, // SPI-A
   SPITXINTA_ISR, // SPI-A
   rsvd_ISR,
   rsvd_ISR,
   MRINTA_ISR, // McBSP-A
   MXINTA_ISR, // McBSP-A
   rsvd_ISR,
   rsvd_ISR,

// Group 7 PIE Vectors
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,

// Group 8 PIE Vectors
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,

// Group 9 PIE Vectors
   SCIRXINTA_ISR, // SCI-A
   SCITXINTA_ISR, // SCI-A
   SCIRXINTB_ISR, // SCI-B
   SCITXINTB_ISR, // SCI-B
   ECAN0INTA_ISR, // eCAN
   ECAN1INTA_ISR, // eCAN
   rsvd_ISR,
   rsvd_ISR,

// Group 10 PIE Vectors
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,

// Group 11 PIE Vectors
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,

// Group 12 PIE Vectors
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
   rsvd_ISR,
};

//---------------------------------------------------------------------------
// InitPieVectTable:
//---------------------------------------------------------------------------
// This function initializes the PIE vector table to a known state.
// This function must be executed after boot time.
//

void InitPieVectTable(void)
{
int16 i;
Uint32 *Source = (void *) &PieVectTableInit;
Uint32 *Dest = (void *) &PieVectTable;

EALLOW;
for(i=0; i < 128; i++)
*Dest++ = *Source++;
EDIS;

// Enable the PIE Vector Table
PieCtrl.PIECRTL.bit.ENPIE = 1;

}
这是一种初始化，这种初始化就是将具体地址赋值给变量向量！
void InitPieVectTable(void)
{
int16 i;
//Uint32 *Source = (void *) &PieVectTableInit;
Uint32 *Dest = (void *) &PieVectTable;

EALLOW;
for(i=0; i < 128; i++)
*Dest++ =0;
EDIS;

// Enable the PIE Vector Table
PieCtrl.PIECRTL.bit.ENPIE = 1;
}
这又是一种初始化，这种初始化就是将0赋值给变量向量！
请问这两种初始化有什么区别？哪种初始化会更好？同时不好的，会出现什么问题？？？

只看该作者 · 2013-3-19 07:50

楼主自己也说了，第一种是将PieVectTableInit值全部传递给了Struct PieVectTable。而你说的第二种是将0全都赋值给Struct PieVectTable这个变量。这不就是一种初始化方法吗？只是赋的值不一样而已啊，怎么会是两种初始化方法呢。循环里面的*Dest++ = *Source++; *Dest++ =0;并不是传递的地址，而是传递的内容。