initcapture.c

使用芯片为TI公司的DSP2812。该程序用以完成对直流电机的控制

#include "DSP28_Device.h"

#define V112 GpioDataRegs.GPADAT.bit.GPIOA8
#define V113 GpioDataRegs.GPADAT.bit.GPIOA9
#define V114 GpioDataRegs.GPADAT.bit.GPIOA10
//---------------------------------------------------------------------------
// InitCapture: 
//---------------------------------------------------------------------------
// This function initializes the CAP1-3 to a known state.
//
void InitCapture(void)
{

    EALLOW;
    GpioMuxRegs.GPAMUX.all |= 0x0701;     
    EDIS;
     
   	EvaRegs.T2CON.all = 0x9740;  // clock = HSPCLK/128, continuous up count
	EvaRegs.T2CNT = 0;
	EvaRegs.T2PR = 0xFFFF;
	EvaRegs.CAPCON.all |= 0x30FC; // up edge
	EvaRegs.CAPFIFOA.all = 0x1500;
	EvaRegs.EVAIFRC.all = 0x0007;
	EvaRegs.EVAIMRC.all = 0x0007;
	PieCtrl.PIEIER3.all = 0x00FF;
//	PieCtrl.PIEIER3.bit.INTx6 = 1;			
//	PieCtrl.PIEIER3.bit.INTx7 = 1;
	EALLOW;	
	PieVectTable.PIEIER3.all = &ISRCAPTURE;
	EDIS;   	
	IER |= (M_INT3);

}	

interrupt void ISRCAPTURE(void)
{
     
}	
//===========================================================================
// No more.
//===========================================================================