dsp281x_ev.c

DSP2812电路板烧写FLASH代码,用于内存地址分配和程序烧写

//###########################################################################
//
// FILE:	DSP281x_Ev.c
//
// TITLE:	DSP281x Event Manager Initialization & Support Functions.
//
//###########################################################################
//
//  Ver | dd mmm yyyy | Who  | Description of changes
// =====|=============|======|===============================================
//  1.00| 11 Sep 2003 | L.H. | No change since previous version (v.58 Alpha)
//###########################################################################

#include "DSP281x_Device.h"     // DSP281x Headerfile Include File
//#include "DSP281x_Examples.h"   // DSP281x Examples Include File
void init_eva_timer1(void);
void init_eva(void);
//#define eva_Period_T1	15000, if HISPCP = 0x0000;
extern  const   long 	Tp;	//eva_Period_T1
//---------------------------------------------------------------------------
// InitEv: 
//---------------------------------------------------------------------------
// This function initializes to a known state.
//
void InitEv(void)
{

	init_eva();
//	init_eva_timer1();

}	
//======
void init_eva()
{

// EVA Configure T1PWM, T2PWM, PWM1-PWM6 
// Initalize the timers
   // Initalize EVA Timer1 
  // EvaRegs.T1PR = eva_Period_T1;       // Timer1 period
   EvaRegs.T1PR = Tp;       // Timer1 period   
//   EvaRegs.T1CMPR = 0x3C00;     // Timer1 compare
   EvaRegs.T1CNT = 0x0000;      // Timer1 counter
   // TMODE = continuous up/down
   // Timer enable
   // Timer compare enable
   EvaRegs.T1CON.all = 0x1042;   

/*
  // Initalize EVA Timer2 
  EvaRegs.T2PR = 0x0FFF;       // Timer2 period
  EvaRegs.T2CMPR = 0x03C0;     // Timer2 compare
  EvaRegs.T2CNT = 0x0000;      // Timer2 counter
  // TMODE = continuous up/down
  // Timer enable
  // Timer compare enable
  EvaRegs.T2CON.all = 0x1042;   

*/

/*
  // Setup T1PWM and T2PWM
  // Drive T1/T2 PWM by compare logic
  EvaRegs.GPTCONA.bit.TCMPOE = 1;
  // Polarity of GP Timer 1 Compare = Active low
  EvaRegs.GPTCONA.bit.T1PIN = 1;
  // Polarity of GP Timer 2 Compare = Active high
  EvaRegs.GPTCONA.bit.T2PIN = 2;
*/

  // Enable compare for PWM1-PWM6
  EvaRegs.CMPR1 = 0x0C00;
  EvaRegs.CMPR2 = 0x3C00;
  EvaRegs.CMPR3 = 0xFC00;
    
  // Compare action control.  Action that takes place
  // on a cmpare event
  // output pin 1 CMPR1 - active high
  // output pin 2 CMPR1 - active low
  // output pin 3 CMPR2 - active high
  // output pin 4 CMPR2 - active low
  // output pin 5 CMPR3 - active high
  // output pin 6 CMPR3 - active low
  //EvaRegs.ACTRA.all = 0x0666;
  EvaRegs.ACTRA.all = 0x0999;  
  //EvaRegs.DBTCONA.all = 0x0000; // Disable deadband
  EvaRegs.DBTCONA.all = 0x0cff;  //5.12us, if HISPCP = 0x0001; 
//  EvaRegs.COMCONA.all = 0xA600;
  EvaRegs.COMCONA.all = 0x0000;
  //EvaRegs.COMCONA.all = 0x8200;
/*  
		ldp		#COMCONA/128
		SPLK	#8200H,COMCONA
		;SPLK	#0000H,COMCONA	;only used for sample, no pwm pulse
*/
} 	
//======
void init_eva_timer1(void)
{
    // Initialize EVA Timer 1:
    // Setup Timer 1 Registers (EV A)
    EvaRegs.GPTCONA.all = 0;
/*   
    // Set the Period for the GP timer 1 to 0x0200;
    EvaRegs.T1PR = 0x0200;       // Period
    EvaRegs.T1CMPR = 0x0000;     // Compare Reg
*/
/*   
    // Enable Period interrupt bits for GP timer 1
    // Count up, x128, internal clk, enable compare, use own period
    EvaRegs.EVAIMRA.bit.T1PINT = 1;
    EvaRegs.EVAIFRA.bit.T1PINT = 1;
*/
//    EvaRegs.EVAIMRA.bit.T1UFINT = 1;
//    EvaRegs.EVAIFRA.bit.T1UFINT = 1;
    
/*    
    // Clear the counter for GP timer 1
    EvaRegs.T1CNT = 0x0000;
    EvaRegs.T1CON.all = 0x1742;

    // Start EVA ADC Conversion on timer 1 Period interrupt
    EvaRegs.GPTCONA.bit.T1TOADC = 2;
*/
}

//===========================================================================
// No more.
//===========================================================================