c2812pwmtest.c

由MATLAB生成的PWM的源代码

/*
 * File: c2812pwmtest.c
 *
 * Real-Time Workshop code generated for Simulink model c2812pwmtest.
 *
 * Model version                        : 1.102
 * Real-Time Workshop file version      : 6.3  (R14SP3)  26-Jul-2005
 * Real-Time Workshop file generated on : Sat Dec 13 20:42:50 2008
 * TLC version                          : 6.3 (Aug  5 2005)
 * C source code generated on           : Sat Dec 13 20:42:51 2008
 */

#include "c2812pwmtest.h"
#include "c2812pwmtest_private.h"

/* Block states (auto storage) */
D_Work_c2812pwmtest c2812pwmtest_DWork;

/* Real-time model */
RT_MODEL_c2812pwmtest c2812pwmtest_M_;
RT_MODEL_c2812pwmtest *c2812pwmtest_M = &c2812pwmtest_M_;

/* Model step function */
void c2812pwmtest_step(void)
{

  /* local block i/o variables*/
  real_T rtb_PulseGenerator;
  uint16_T rtb_Add;

  /* DiscretePulseGenerator: '<S2>/Pulse Generator' */
  rtb_PulseGenerator = ((real_T)c2812pwmtest_DWork.clockTickCounter <
    c2812pwmtest_P.PulseGenerator_Duty) && (c2812pwmtest_DWork.clockTickCounter
    >= 0L) ? c2812pwmtest_P.PulseGenerator_Amp : 0.0;
  if((real_T)c2812pwmtest_DWork.clockTickCounter >=
   c2812pwmtest_P.PulseGenerator_Period - 1.0) {
    c2812pwmtest_DWork.clockTickCounter = 0L;
  } else {
    c2812pwmtest_DWork.clockTickCounter = c2812pwmtest_DWork.clockTickCounter +
      1L;
  }

  /* Sum: '<S2>/Add' incorporates:
   *  DataTypeConversion: '<S2>/Data Type Conversion'
   *  Constant: '<S2>/Constant'
   */
  rtb_Add = (uint16_T)(rtb_PulseGenerator <= 65535.0 ? rtb_PulseGenerator >= 0.0
    ? rtb_PulseGenerator : 0.0 : 65535.0) + c2812pwmtest_P.Constant_Value;

  /* S-Function Block: <Root>/C28x PWM (c28xpwm) */
  {
    EvaRegs.T1PR = (uint16_T)rtb_Add;
    EvaRegs.CMPR1 = (uint16_T)c2812pwmtest_P.PulseWidthSource_Value;
  }
}

/* Model initialize function */

void c2812pwmtest_initialize(boolean_T firstTime)
{

  if (firstTime) {

    /* initialize error status */
    rtmSetErrorStatus(c2812pwmtest_M, (const char_T *)0);

    /* data type work */
    (void) memset((char_T *) &c2812pwmtest_DWork,0,sizeof(D_Work_c2812pwmtest));

    /* initialize non-finites */
    rt_InitInfAndNaN(sizeof(real_T));

    /* Start for DiscretePulseGenerator: '<S2>/Pulse Generator' */
    c2812pwmtest_DWork.clockTickCounter = 0L;

    EALLOW;

    GpioMuxRegs.GPAMUX.all = 0x00FF;    // EVA PWM 1-6  pins
    config_PWM_A (37500.0,2,1,"INPUT_PORT",18500.0,
     0,"SPECIFY_VIA_DIALOG",18500.0,0,"SPECIFY_VIA_DIALOG",18500.0,1638,
     0, 0, 0, 0, 1, 0);
    EDIS;
  }
}

/* Model terminate function */

void c2812pwmtest_terminate(void)
{
  /* (no terminate code required) */
}

/* File trailer for Real-Time Workshop generated code.
 *
 * [EOF]
 */