dsp28_ev.c

一个基于DSP 2812的开关磁阻电机的控制程序的例子。用霍尔传感器测相位

//
//      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)
{
// EVA Configure T1PWM, T2PWM, PWM1-PWM6 
// Initalize the timers

 // Initalize EVA Timer2 做为QEP计数器
  
  EvaRegs.T2PR = 0x803B;       // Timer2 period(7FFF+60) Holds the period value of Timer 2counter
  EvaRegs.T2CMPR = 0x7FC3;     // Timer2 compare(7FFF-60)  Holds the compare value of Timer2 counter
  EvaRegs.T2CNT = 0x7FFF;      // Timer2 counter  Holds the instantaneous value of Timer 1 counter
  EvaRegs.T2CON.all = 0x9872;      //定向增减，允许编码器接口 
  							//Operation is not affected by emulation suspend
  							//11 Directional-Up/-Down Count Mode
  							//Input clock prescaler 000 x/1
  							//Use own TENABLE bit
  							//Enable timer operations
  							//Clock source QEP circuit
  							//Timer compare register reload condition :00 When counter is 0
  							// Timer compare enable : Enable timer compare operation
  							//SELT1PR,SELT3PR  : Use own period register
  							
  							/*SELT1PR  In the case of EVA, this bit is SELT1PR (Period register select).
								When set to 1 in T2CON, the period register of Timer 1 is chosen for Timer 2
								also, ignoring the period register of Timer 2. This bit is a reserved bit in
								T1CON.*/


							
    
  EvaRegs.EVAIMRB.bit.T2PINT = 1;	    // T2周期中断使能
  EvaRegs.EVAIFRB.bit.T2PINT = 1;		// 擦除EVA中断标志寄存器
  EvaRegs.EVAIMRB.bit.T2CINT = 1;       //T2比较中断使能
  EvaRegs.EVAIFRB.bit.T2CINT = 1;       //T2比较中断标志位置位
  PieCtrl.PIEACK.all = 0xFFFF; 	        // 扩展中断使能  
  
  // TMODE = continuous up/down
  // Timer enable
  // Timer compare enable
  //EvaRegs.T2CON.all = 0x1083;
  
    // Initalize EVB Timer4 
  //EvbRegs.T4PR = 0x1194;       // Timer2 period
  //EvbRegs.T4CMPR = 500;     // Timer2 compare
  //EvbRegs.T4CNT = 0x0000;      // Timer2 counter
  // TMODE = continuous up/down
  // Timer enable
  // Timer compare enable
  //EvbRegs.T4CON.all = 0x1083;

   // Initalize EVA Timer1 
   EvaRegs.T1PR = 15000;       // Timer1 period
   EvaRegs.T1CMPR = 3000;     // Timer1 compare
   EvaRegs.T1CNT = 0x0000;      // Timer1 counter
   // TMODE = continuous up/down
   // Timer enable
   // Timer compare enable
   EvaRegs.T1CON.all = 0x1042;   //Emulation control bits 00 Stop immediately on emulation suspend
   							//10 Continuous-Up Count Mode
   							// Input clock prescaler 000 x/1
  							//Use own TENABLE bit
   							//Enable timer operations
     							//Clock source 00 Internal (i.e., HSPCLK)
   							//Timer compare register reload condition	When counter is 0	
   							//Enable timer compare operation
   							//Use own period register
   // Initalize EVB Timer3 
   EvbRegs.T3PR = 15000;       // Timer1 period
   EvbRegs.T3CMPR = 3000;     // Timer1 compare
   EvbRegs.T3CNT = 0x0000;      // Timer1 counter
   // TMODE = continuous up/down
   // Timer enable
   // Timer compare enable
   EvbRegs.T3CON.all = 0x1042;  
   


  // Setup T1PWM and T2PWM
  // Drive T1/T2 PWM by compare logic
  EvaRegs.GPTCONA.bit.TCOMPOE =1;
  
  // Polarity of GP Timer 1 Compare = Active high
  EvaRegs.GPTCONA.bit.T1PIN = 2;
  // Polarity of GP Timer 2 Compare = Active high
  EvaRegs.GPTCONA.bit.T2PIN = 2;
  EvaRegs.GPTCONA.bit.T1TOADC = 2; //周期中断启动ADC
  
  // Enable compare for PWM1-PWM6
  EvaRegs.CMPR1 = 3500;//PWM2
  EvaRegs.CMPR2 = 3500;
  EvaRegs.CMPR3 = 3500;
  
    
  // Compare action control.  Action that takes place
  // on a cmpare event
  // output pin 1 CMPR1 - active low
  // output pin 2 CMPR1 - active low
  // output pin 3 CMPR2 - active low
  // output pin 4 CMPR2 - active low
  // output pin 5 CMPR3 - active low
  // output pin 6 CMPR3 - active low
  EvaRegs.ACTR.all  = 0x0faa;
  EvaRegs.DBTCONA.all = 0x0000; // Disable deadband
  EvaRegs.COMCONA.all = 0xC600; //1100 0110 0000 0000
  
    // Setup T3PWM and T4PWM
  // Drive T3/T4 PWM by compare logic
  EvbRegs.GPTCONB.bit.TCOMPOE =1;
  
  // Polarity of GP Timer 1 Compare = Active high
  EvbRegs.GPTCONB.bit.T3PIN = 2;
  // Polarity of GP Timer 2 Compare = Active high
  EvbRegs.GPTCONB.bit.T4PIN = 2;
  EvbRegs.GPTCONB.bit.T3TOADC = 2; //周期中断启动ADC
  
  // Enable compare for PWM1-PWM6
  EvbRegs.CMPR4 = 3500;
  EvbRegs.CMPR5 = 3500;//PWM2
  //EvbRegs.CMPR5 = 1500;
  //EvbRegs.CMPR6 = 1500;
  
    
  // Compare action control.  Action that takes place
  // on a cmpare event
  
  EvbRegs.ACTRB.all  = 0x0fff;// active high 
  EvbRegs.DBTCONB.all = 0x0000; // Disable deadband
  EvbRegs.COMCONB.all = 0xc600; //1100 0110 0010 0000
  
  
  
  EvaRegs.T1CON.all = 0x1042;
  EvbRegs.T3CON.all = 0x1042;
  EvaRegs.EXTCONA.bit.INDCOE = 1;
  EvaRegs.COMCONA.bit.FCOMPOE =1;
  EvaRegs.COMCONA.bit.FCMP1OE = 1;
  EvaRegs.COMCONA.bit.FCMP2OE = 1;
  EvaRegs.COMCONA.bit.FCMP3OE = 1;
  EvbRegs.COMCONB.bit.FCOMPOE = 1;
 
  

}
/*
void InitPWMA(void)
{	
	// EVA PWM初始化,HSPCLK为SYSCLK/10 = 15Mhz
	EvaRegs.T1PR = 0xEFFF;							// 周期4096us
	EvaRegs.T1CNT = 0x0000;							// 计数初值为0
	EvaRegs.T1CON.all = 0x1042;					// 时钟控制,不分频
  	// Enable compare for PWM1-PWM6
  	EvaRegs.CMPR1 = 0x7800;							// PWM12占空比50%
  	EvaRegs.CMPR2 = 0x3000;							// PWM34占空比20%
	EvaRegs.CMPR3 = 0x0000;
	EvaRegs.ACTRA.all = 0x0555;					// PWM低有效
	EvaRegs.DBTCONA.all = 0x0000; 				// 死区控制无效
   EvaRegs.EXTCONA.bit.INDCOE = 1;				// 扩展控制寄存器,比较器1,2,3单独使能
   EvaRegs.COMCONA.all = 0xA400;					// 比较器控制寄存器
   EvaRegs.COMCONA.bit.FCMP1OE = 1;
   EvaRegs.COMCONA.bit.FCMP2OE = 1;
	EvaRegs.COMCONA.bit.FCMP3OE = 1;										// CMP1 Enable
   StopCmp2();											// CMP23 Disable
   StopCmp3();
}
*/
	
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// No more.
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