pwm_motor.c

DSP中使用PWM模块对电机进行控制

/** ###################################################################
**     Filename  : pwm_motor.C
**     Project   : pwm_motor
**     Processor : 56F8346
**     Version   : Driver 01.10
**     Compiler  : Metrowerks DSP C Compiler
**     Date/Time : 2009-1-7, 11:09
**     Abstract  :
**         Main module.
**         Here is to be placed user's code.
**     Settings  :
**     Contents  :
**         No public methods
**
**     (c) Copyright UNIS, spol. s r.o. 1997-2005
**     UNIS, spol. s r.o.
**     Jundrovska 33
**     624 00 Brno
**     Czech Republic
**     http      : www.processorexpert.com
**     mail      : [e-mail]
** ###################################################################*/
/* MODULE pwm_motor */

/* Including used modules for compiling procedure */
#include "Cpu.h"
/* Include shared modules, which are used for whole project */
#include "PE_Types.h"
#include "PE_Error.h"
#include "PE_Const.h"
#include "IO_Map.h"

void main(void)
{
  /*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
  PE_low_level_init();
  /*** End of Processor Expert internal initialization.                    ***/

  /* Write your code here */
PESL(PWMB, PWM_SET_PRESCALER,PWM_PRESCALER_DIV_8);/*configure PWM timing*/
PESL(PWMB, PWM_SET_MODULO,1875); 
PESL(PWMB, PWM_SET_DEADTIME,240);/*set deadtime*/ 
PESL(PWMB, PWM_WRITE_VALUE_REG_0, 1046);/* Initialize Duty Cycle for complimentary channels*/
PESL(PWMB, PWM_WRITE_VALUE_REG_1, 469);
PESL(PWMB, PWM_WRITE_VALUE_REG_2, 1046);
PESL(PWMB, PWM_WRITE_VALUE_REG_3, 469);
PESL(PWMB, PWM_WRITE_VALUE_REG_4, 1046);
PESL(PWMB, PWM_WRITE_VALUE_REG_5,469);
PESL(PWMB, PWM_WRITE_DISABLE_MAPPING_REG1,0);/*DISABLE PWM FAULTS*/
PESL(PWMB, PWM_WRITE_DISABLE_MAPPING_REG2,0);
PESL(PWMB, PWM_DEVICE, PWM_ENABLE);/*start PWM count*/
PESL(PWMB, PWM_HARDWARE_ACCELERATION,PWM_ENABLE);/*Enable writing to map & swap bits*/
PESL(PWMB, PWM_SET_SWAP,PWM_CHANNEL_01|PWM_CHANNEL_45);/*apply positive volatage to Phase B,and negative voltage to Phases A and C*/
PESL(PWMB, PWM_SET_RELOAD_FREQUENCY,PWM_RELOAD_OPPORTUNITY_16);/*Set reload to every 16 PWM periods*/
PESL(PWMB, PWM_LOAD_OK, NULL);
PESL(PWMB, PWM_OUTPUT_PAD,PWM_ENABLE);/*ENABLE PWM OUTPUT*/

  for(;;) {}
}

/* END pwm_motor */
/*
** ###################################################################
**
**     This file was created by UNIS Processor Expert 2.97 [03.74]
**     for the Freescale 56800 series of microcontrollers.
**
** ###################################################################
*/