有人用过28027控制超声波模块

只看该作者 · 2013-10-31 00:13

#include "DSP28x_Project.h"

extern void MemCopy(Uint16 *SourceAddr, Uint16* SourceEndAddr, Uint16* DestAddr);
extern Uint16 RamfuncsLoadStart;
extern Uint16 RamfuncsLoadEnd;
extern Uint16 RamfuncsRunStart;
uint32_t distance=0;

/*
* main.c
*/
int main(void) {
      InitSysCtrl();
      InitGpio();
      DINT;
      InitPieCtrl();
      IER=0x00;
      IFR=0x00;
      InitPieVectTable();

      MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart);
      InitFlash();
      InitCpuTimers();
      ConfigCpuTimer(&CpuTimer0,60,6000);
      CpuTimer0Regs.TCR.all=0x0010;
      //CpuTimer0Regs.TCR.bit.TSS=1;
      IER |= M_INT1;
      PieCtrlRegs.PIEIER1.bit.INTx7 = 1;             // timer0  (1.7)
      EINT;
      ERTM;
      while(1)
      {

            GpioDataRegs.GPADAT.bit.GPIO0=1;
            DELAY_US(20L);
            GpioDataRegs.GPADAT.bit.GPIO0=0;

            while(GpioDataRegs.GPADAT.bit.GPIO1==0);
            CpuTimer0Regs.TCR.all=0x4001;
            while(GpioDataRegs.GPADAT.bit.GPIO1==1);
            distance = CpuTimer0.InterruptCount*17;
            CpuTimer0Regs.TCR.all=0x0011;
            if(distance<500)
            {
                     GpioDataRegs.GPACLEAR.bit.GPIO2=1;
            }
            else
                     GpioDataRegs.GPASET.bit.GPIO2=1;
      }
}