dsp28_ev.c

DSP捕获历程

//
//      TMDX ALPHA RELEASE
//      Intended for product evaluation purposes
//
//###########################################################################
//
// FILE:	DSP28_Ev.c
//
// TITLE:	DSP28 Event Manager Initialization & Support Functions.
//
//###########################################################################
//
//  Ver | dd mmm yyyy | Who  | Description of changes
// =====|=============|======|===============================================
//  0.55| 06 May 2002 | L.H. | EzDSP Alpha Release
//  0.56| 20 May 2002 | L.H. | No change
//  0.57| 27 May 2002 | L.H. | No change
//###########################################################################

#include "DSP28_Device.h"

//---------------------------------------------------------------------------
// InitEv: 
//---------------------------------------------------------------------------
// This function initializes to a known state.
//
void InitEv(void)
{
	EALLOW;
	GpioMuxRegs.GPAMUX.all=0xFFFF;
	EDIS;
	//定时器1的设定
	EvaRegs.GPTCONA.all = 0x0859;		/* gp timer control register */
	EvaRegs.T1CNT = 0;					/* timer1 count is zero */
	EvaRegs.T1CON.all = 0x1f42;//第6位为定时器使能位，即开始输出PWM位
	EvaRegs.T1PR = 0x2EE0;//周期寄存器  设置脉宽总长度 
	EvaRegs.T1CMPR = 0x0384;//比较寄存器  设置高电平脉宽长度
	
	
	EvaRegs.CMPR1 = 0x0384;
	EvaRegs.ACTR.all = 0x0666;
	EvaRegs.DBTCONA.all = 0x0000;
	EvaRegs.COMCONA.all = 0xA600;
	//定时器2的设定 中断定时器
	EvaRegs.GPTCONA.all=0;
	EvaRegs.T2PR=0x0E4E0;   //采样周期为0.1s
	EvaRegs.T2CMPR=0x0000;
	
	EvaRegs.EVAIMRB.bit.T2PINT=1;
	EvaRegs.EVAIFRB.bit.T2PINT=1;
	
	EvaRegs.T2CNT=0x0000;
	EvaRegs.T2CON.all=0x1742;
	
	//定时器4的设定 中断定时器
	EvbRegs.GPTCONB.all=0;
	EvbRegs.T4PR=0x0E4E0;   //采样周期为0.1s
	EvbRegs.T4CMPR=0x0000;
	
	EvbRegs.EVBIMRB.bit.T4PINT=1;
	EvbRegs.EVBIFRB.bit.T4PINT=1;
	
	EvbRegs.T4CNT=0x0000;
	EvbRegs.T4CON.all=0x1742;

    //定时器3的设定 PWM产生信号
    EvbRegs.GPTCONB.all = 0x0859;		/* gp timer control register */
	EvbRegs.T3CNT = 0;					/* timer1 count is zero */
	EvbRegs.T3CON.all = 0x1f42;
	EvbRegs.T3PR = 0x3EE0;
	EvbRegs.T3CMPR = 0x0384;
}	
	
//===========================================================================
// No more.
//===========================================================================