標(biāo)題: DSP2812產(chǎn)生三相SPWM波程序 [打印本頁(yè)]
作者: kobe2488    時(shí)間: 2019-6-27 15:54
標(biāo)題: DSP2812產(chǎn)生三相SPWM波程序
DSP2812產(chǎn)生三相SPWM波，有需要的拿走

單片機(jī)源程序如下:
  1. /*
  2. 本程序在220V 3400轉(zhuǎn) 5對(duì)級(jí)直流無刷電機(jī)調(diào)試下通過
  3. */
  4. #include "DSP281x_Device.h"     // DSP281x Headerfile Include File
  5. #include "DSP281x_Examples.h"   // DSP281x Examples Include File
  6. #include "math.h"

  8. #define C_TIME 20
  9. #define pwm_half_per 3750 /*3750 pwm=20khz*//*sytemclk=150MHz*/
  10.                           /*1875 pwm=40kHz*/

  12. #define pole 2  /*電機(jī)的級(jí)對(duì)數(shù)*/
  13. #define timer2_per 60000//234375/* timer2 period with a 1/128 timer prescaler and 150MHz CPUCLK*/
  14. #define PI 3.1415926
  15. unsigned int adc_res;
  16. unsigned int dir=1;
  17. unsigned int ldd=0;
  18. unsigned int PWM_DUTY=2000;

  20. unsigned int I_result[2048];
  21. unsigned int i=0;
  22. unsigned int hall=0x000;
  23. unsigned int time_cnt=C_TIME;
  24. unsigned int hallspeed=0;
  25. unsigned int prehall=0;
  26. unsigned int speed;
  27. unsigned int a=0,b=0,c=0,d=0;
  28. unsigned int displaytime=0;
  29. unsigned int displayflag=0;

  31. unsigned int fc=10000;
  32. unsigned int f=50;
  33. float M=0.9;
  34. unsigned int k=0;
  35. // Prototype statements for functions found within this file.
  36. void init_eva(void);
  37. void eva_timer1_isr(void);

  39. //void init_evb(void);

  41. // Global counts used in this example


  44. void main(void)
  45. {

  47. // Step 1. Initialize System Control:
  48. // PLL, WatchDog, enable Peripheral Clocks
  49. // This example function is found in the DSP281x_SysCtrl.c file.
  50.    InitSysCtrl();

  52. // Step 2. Initalize GPIO:
  53. // This example function is found in the DSP281x_Gpio.c file and
  54. // illustrates how to set the GPIO to it's default state.
  55. // InitGpio();  // Skipped for this example  

  57. // Initialize only GPAMUX and GPBMUX for this test
  58.    EALLOW;
  59.    // Enable PWM pins
  60.    GpioMuxRegs.GPAMUX.all = 0x003F; // EVA PWM 1-6  pins
  61.    GpioMuxRegs.GPAQUAL.all=0x0000;
  62.    EDIS;
  63.    
  64. // Step 3. Clear all interrupts and initialize PIE vector table:
  65. // Disable CPU interrupts
  66.    DINT;

  68. // Initialize PIE control registers to their default state.
  69. // The default state is all PIE interrupts disabled and flags
  70. // are cleared.  
  71. // This function is found in the DSP281x_PieCtrl.c file.
  72.    InitPieCtrl();
  73.    IER = 0x0000;
  74.    IFR = 0x0000;
  75.    
  76.   // Interrupts that are used in this example are re-mapped to
  77. // ISR functions found within this file.
  78.    EALLOW;  // This is needed to write to EALLOW protected registers
  79.    PieVectTable.T1PINT = &eva_timer1_isr;

  81.    EDIS;  



  85. // Disable CPU interrupts and clear all CPU interrupt flags:


  88. // Initialize the PIE vector table with pointers to the shell Interrupt
  89. // Service Routines (ISR).  
  90. // This will populate the entire table, even if the interrupt
  91. // is not used in this example.  This is useful for debug purposes.
  92. // The shell ISR routines are found in DSP281x_DefaultIsr.c.
  93. // This function is found in DSP281x_PieVect.c.
  94.    InitPieVectTable();
  95.    EvaRegs.T1CON.all=0x0000;//disable time1
  96. // Step 4. Initialize all the Device Peripherals:
  97. // This function is found in DSP281x_InitPeripherals.c
  98. // InitPeripherals(); // Not required for this example
  99.    init_eva();
  100. //   init_evb();

  102. // Step 5. User specific code, enable interrupts:
  103. // Enable PIE group 2 interrupt 4 for T1PINT
  104.     PieCtrlRegs.PIEIER2.all = M_INT4;


  107.     // Enable CPU INT2 for T1PINT, INT3 for T2PINT, INT4 for T3PINT
  108.     // and INT5 for T4PINT:
  109.     IER |= M_INT2;

  111.     // Enable global Interrupts and higher priority real-time debug events:
  112.     EINT;   // Enable Global interrupt INTM
  113.     ERTM;   // Enable Global realtime interrupt DBGM
  114.     EvaRegs.EVAIMRA.bit.T1PINT = 1;
  115.     EvaRegs.EVAIFRA.bit.T1PINT = 1;
  116.   // Just sit and loop forever:
  117.   // PWM pins can be observed with a scope.       
  118.    
  119.   for(;;)
  120.   {
  121.   }

  123. }

  125. void init_eva()
  126. {

  128. // EVA Configure T1PWM, T2PWM, PWM1-PWM6
  129. // Initalize the timers
  130.    

  132.    EvaRegs.GPTCONA.bit.TCMPOE = 1;//0
  133.    EvaRegs.GPTCONA.bit.T1PIN = 2;//0
  134.    // Initalize EVA Timer1
  135.    //EvaRegs.T1PR=0.0001;
  136.    EvaRegs.T1PR = pwm_half_per;       // Timer1 period
  137.    EvaRegs.T1CMPR=0;
  138.    //EvaRegs.T1CMPR = PWM_DUTY;     // Timer1 compare
  139.    EvaRegs.T1CNT = 0x0000;      // Timer1 counter
  140.    EvaRegs.DBTCONA.all=0x0000;      //deadband units off
  141.    EvaRegs.ACTRA.all  =0x0fff; //pwm pin set active high*/
  142.    // Enable compare for PWM1-PWM6
  143.    EvaRegs.CMPR1=0;
  144.    //EvaRegs.CMPR1=PWM_DUTY;
  145.    EvaRegs.CMPR2=PWM_DUTY;
  146.    EvaRegs.CMPR3=PWM_DUTY;
  147.    EvaRegs.COMCONA.all = 0xA600;
  148.    EvaRegs.T1CON.all = 0x842;//0x840   

  150.    
  151.   // Compare action control.  Action that takes place
  152.   // on a cmpare event
  153.   // output pin 1 CMPR1 - active high
  154.   // output pin 2 CMPR1 - active low
  155.   // output pin 3 CMPR2 - active high
  156.   // output pin 4 CMPR2 - active low
  157.   // output pin 5 CMPR3 - active high
  158.   // output pin 6 CMPR3 - active low

  160.   EvaRegs.DBTCONA.all = 0x1000; // Disable deadband



  164. }


  167. void eva_timer1_isr(void)
  168. {
  169.    
  170.    EvaRegs.EVAIMRA.bit.T1PINT = 1;

  172.    EvaRegs.EVAIFRA.all = BIT7;
  173.    EvaRegs.ACTRA.all =0x0666;//0x0c02
  174.    //EvaRegs.CMPR3=pwm_half_per-200;
  175.    //EvaRegs.CMPR1=PWM_DUTY;
  176.    //EvaRegs.CMPR2=PWM_DUTY;
  177.    EvaRegs.CMPR1=(pwm_half_per/2)*(1+0.9*sin(PI*k/100));
  178.    EvaRegs.CMPR2=(pwm_half_per/2)*(1+0.9*sin(PI*k/100+2*PI/3));
  179.    EvaRegs.CMPR3=(pwm_half_per/2)*(1+0.9*sin(PI*k/100+4*PI/3));
  180.    k++;
  181.    if(k==200)
  182.    {
  183.      k=0;
  184.    }
  185. //  EvaRegs.CMPR1=PWM_DUTY;
  186. //  EvaRegs.CMPR2=PWM_DUTY;
  187. //  EvaRegs.CMPR3=PWM_DUTY;
  188.    
  189.    PieCtrlRegs.PIEACK.all = PIEACK_GROUP2;
  190. }

  192.        
復(fù)制代碼

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75448169dsp2812spwm.zip (422.74 KB, 下載次數(shù): 63)






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