【DSP】TMS320F28035 GPIO外部中断例程

#include "DSP28x_Project.h"//extern Uint16 RamfuncsLoadStart;//extern Uint16 RamfuncsLoadEnd;//extern Uint16 RamfuncsRunStart;interrupt void xint1_isr(void);int main(void){    InitSysCtrl();    EALLOW;    GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0;    GpioCtrlRegs.GPBDIR.bit.GPIO34 = 1;    GpioDataRegs.GPBDAT.bit.GPIO34 = 0;    EDIS;    DINT;    InitPieCtrl();    IER = 0x0000;    IFR = 0x0000;    InitPieVectTable();//     MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart);//     InitFlash();    EALLOW;    PieVectTable.XINT1 = &xint1_isr;    EDIS;    EALLOW;    GpioCtrlRegs.GPAMUX1.bit.GPIO12 = 0;    GpioCtrlRegs.GPADIR.bit.GPIO12 = 0;    GpioCtrlRegs.GPAQSEL1.bit.GPIO12 = 0;//GPAQSEL1寄存器用来配置采样数，也可以认为是滤波数，当干扰信号持续采样周期小于该寄存器设置的采样周期数时，干扰信号被滤除。    GpioIntRegs.GPIOXINT1SEL.bit.GPIOSEL = 12;//GPIO12被配置为XINT外部中断1    XIntruptRegs.XINT1CR.bit.POLARITY = 0;//外部中断1设置为下降沿触发    XIntruptRegs.XINT1CR.bit.ENABLE = 1;//使能外部中断1    EDIS;    PieCtrlRegs.PIEIER1.bit.INTx4 = 1;//Enable PIE GROUP1 INT4    PieCtrlRegs.PIECTRL.bit.ENPIE = 1;//Enable PIE    IER |= M_INT1;  //Enable CPU INT1    EINT;//Enable CPU Interrupt    while(1)    {    }}interrupt void xint1_isr(void){    if(GpioDataRegs.GPADAT.bit.GPIO12 == 0)    {        GpioDataRegs.GPBDAT.bit.GPIO34 =~ GpioDataRegs.GPBDAT.bit.GPIO34;    }    PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;}