DSP

PieVectTable dsp ti 中断向量表

2019-07-13 16:16发布

用的是合众达的seed-dec2812+SEED-XDSPP仿真器(xds510的) 关于F2812中用C语言来实现中断的说明:
1.首先在.cmd中定位系统中断表:
MEMORY
{
PAGE 0 :
 ......................................
PAGE 1 :
 ......................................
   PIE_VECT   : origin = 0x000D00, length = 0x000100
 ......................................        
}
SECTIONS
{
   ...................................
   PieVectTable      : > PIE_VECT,   PAGE = 1
 .....................................
}
2.在C中制定该中断的结构体:
#pragma DATA_SECTION(PieVectTable,"PieVectTable");
struct PIE_VECT_TABLE PieVectTable;(在DSP28_GlobalVariableDefs.C中初始化)
3.用一组常数(按照中断向量的顺序)初始化该名字为PIE_VECT_TABLE的表:
typedef interrupt void(*PINT)(void);这里有些一问,一下应该为函数名??
// Define Vector Table:
struct PIE_VECT_TABLE {
// Reset is never fetched from this table. 
// It will always be fetched from 0x3FFFC0 in either
// boot ROM or XINTF Zone 7 depending on the state of
// the XMP/MC input signal.  On the F2810 it is always
// fetched from boot ROM.
      PINT     PIE1_RESERVED; 
      PINT     PIE2_RESERVED;
      PINT     PIE3_RESERVED;
      PINT     PIE4_RESERVED;
      PINT     PIE5_RESERVED;
      PINT     PIE6_RESERVED;
      PINT     PIE7_RESERVED;
      PINT     PIE8_RESERVED;
      PINT     PIE9_RESERVED;
      PINT     PIE10_RESERVED;
      PINT     PIE11_RESERVED;
      PINT     PIE12_RESERVED;
      PINT     PIE13_RESERVED;
// Non-Peripheral Interrupts:
      PINT     XINT13;    // XINT13
      PINT     TINT2;     // CPU-Timer2
      PINT     DATALOG;   // Datalogging interrupt
      PINT     RTOSINT;   // RTOS interrupt
      PINT     EMUINT;    // Emulation interrupt
      PINT     XNMI;      // Non-maskable interrupt
      PINT     ILLEGAL;   // Illegal operation TRAP
      PINT     USER0;     // User Defined trap 0
      PINT     USER1;     // User Defined trap 1
      PINT     USER2;     // User Defined trap 2
      PINT     USER3;     // User Defined trap 3
      PINT     USER4;     // User Defined trap 4
      PINT     USER5;     // User Defined trap 5
      PINT     USER6;     // User Defined trap 6
      PINT     USER7;     // User Defined trap 7
      PINT     USER8;     // User Defined trap 8
      PINT     USER9;     // User Defined trap 9
      PINT     USER10;    // User Defined trap 10
      PINT     USER11;    // User Defined trap 11
...... .....///省略 // Group 12 PIE Peripheral Vectors:
      PINT     rsvd12_1;
      PINT     rsvd12_2;
      PINT     rsvd12_3;
      PINT     rsvd12_4;
      PINT     rsvd12_5;
      PINT     rsvd12_6;
      PINT     rsvd12_7;
      PINT     rsvd12_8;
};
然后在使我们在.cmd文件中定义的表有以上属性:
extern struct PIE_VECT_TABLE PieVectTable;(在.h文件中)
4.初始化该表(在.c文件中)使之能够为主程序所使用:
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; 
}
5.中断服务程序:
让以上的数值指向你所要的服务程序,例如:
PieVectTable.TINT2 = &ISRTimer2;