F2812中用C语言来实现中断的说明

火辣西米秀

F2812中用C语言来实现中断的说明 [复制链接]

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
      
// Group 1 PIE Peripheral Vectors:
      PINT     PDPINTA;   // EV-A
      PINT     PDPINTB;   // EV-B
      PINT     rsvd1_3;
      PINT     XINT1;     
      PINT     XINT2;
      PINT     ADCINT;    // ADC
      PINT     TINT0;     // Timer 0
      PINT     WAKEINT;   // WD
           
// Group 2 PIE Peripheral Vectors:
      PINT     CMP1INT;   // EV-A
      PINT     CMP2INT;   // EV-A
      PINT     CMP3INT;   // EV-A
      PINT     T1PINT;    // EV-A
      PINT     T1CINT;    // EV-A
      PINT     T1UFINT;   // EV-A
      PINT     T1OFINT;   // EV-A
      PINT     rsvd2_8;
      
// Group 3 PIE Peripheral Vectors:
      PINT     T2PINT;    // EV-A
      PINT     T2CINT;    // EV-A
      PINT     T2UFINT;   // EV-A
      PINT     T2OFINT;   // EV-A
      PINT     CAPINT1;   // EV-A
      PINT     CAPINT2;   // EV-A
      PINT     CAPINT3;   // EV-A
      PINT     rsvd3_8;
      
// Group 4 PIE Peripheral Vectors:
      PINT     CMP4INT;   // EV-B
      PINT     CMP5INT;   // EV-B
      PINT     CMP6INT;   // EV-B
      PINT     T3PINT;    // EV-B
      PINT     T3CINT;    // EV-B
      PINT     T3UFINT;   // EV-B
      PINT     T3OFINT;   // EV-B
      PINT     rsvd4_8;      
     
// Group 5 PIE Peripheral Vectors:
      PINT     T4PINT;    // EV-B
      PINT     T4CINT;    // EV-B
      PINT     T4UFINT;   // EV-B
      PINT     T4OFINT;   // EV-B
      PINT     CAPINT4;   // EV-B
      PINT     CAPINT5;   // EV-B
      PINT     CAPINT6;   // EV-B
      PINT     rsvd5_8;      

// Group 6 PIE Peripheral Vectors:
      PINT     SPIRXINTA; // SPI-A
      PINT     SPITXINTA; // SPI-A
      PINT     rsvd6_3;
      PINT     rsvd6_4;
      PINT     MRINTA;    // McBSP-A
      PINT     MXINTA;    // McBSP-A
      PINT     rsvd6_7;
      PINT     rsvd6_8;
      
// Group 7 PIE Peripheral Vectors:
      PINT     rsvd7_1;
      PINT     rsvd7_2;
      PINT     rsvd7_3;
      PINT     rsvd7_4;
      PINT     rsvd7_5;
      PINT     rsvd7_6;
      PINT     rsvd7_7;
      PINT     rsvd7_8;

// Group 8 PIE Peripheral Vectors:
      PINT     rsvd8_1;
      PINT     rsvd8_2;
      PINT     rsvd8_3;
      PINT     rsvd8_4;
      PINT     rsvd8_5;
      PINT     rsvd8_6;
      PINT     rsvd8_7;
      PINT     rsvd8_8; 

// Group 9 PIE Peripheral Vectors:   
      PINT     RXAINT;    // SCI-A
      PINT     TXAINT;    // SCI-A
      PINT     RXBINT;    // SCI-B
      PINT     TXBINT;    // SCI-B
      PINT     ECAN0INTA; // eCAN
      PINT     ECAN1INTA; // eCAN
      PINT     rsvd9_7;
      PINT     rsvd9_8;

// Group 10 PIE Peripheral Vectors:
      PINT     rsvd10_1;
      PINT     rsvd10_2;
      PINT     rsvd10_3;
      PINT     rsvd10_4;
      PINT     rsvd10_5;
      PINT     rsvd10_6;
      PINT     rsvd10_7;
      PINT     rsvd10_8;
            
// Group 11 PIE Peripheral Vectors:
      PINT     rsvd11_1;
      PINT     rsvd11_2;
      PINT     rsvd11_3;
      PINT     rsvd11_4;
      PINT     rsvd11_5;
      PINT     rsvd11_6;
      PINT     rsvd11_7;
      PINT     rsvd11_8;

// 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;
那么，ISRTimer2也就成了中断服务程序，
×××切记：一定要在主程序的开始先声明该程序：
interrupt void ISRTimer2(void);
.............
.............
然后按照您的需要编制该程序：
interrupt void ISRTimer2(void)
{
CpuTimer2.InterruptCount++;
}