F2812的C语言处理中断

2万 · 2012-10-22 20:33

关于F2812中用C语言来实现中断的说明

2万 · 2012-10-22 20:34

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
.....................................
}

2万 · 2012-10-22 20:34

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）

2万 · 2012-10-22 20:34

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）

2万 · 2012-10-22 20:35

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;

}

2万 · 2012-10-22 20:35

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++;
}

F2812的C语言处理中断

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