切换模块的时候PWM会停止大概2ms

2万 · 2017-2-15 21:41

我撰写的一份程式，需要持续输出PWM讯号且不能中断并且开启动态重配置功能读取ADC功能
在基本配置放置两个PWM输出，另外开了一个配置放置ADC
但在PWM输出会有问题，切换模块的时候PWM会停止大概2ms

1万 · 2017-2-15 21:43

楼主程序可以公开吗？贴程序看下吧，这么说看不出什么原因

2万 · 2017-2-15 21:45

//----------------------------------------------------------------------------
// C main line
//----------------------------------------------------------------------------

#include <m8c.h>       // part specific constants and macros
#include "PSoCAPI.h" // PSoC API definitions for all User Modules
#include "PSoCDynamic.h"
#pragma interrupt_handler PSoC_GPIO_ISR
void swichset (void) ;
WORD PWMADCData (void) ;
BYTE SET1,s1,WD;
int i,time1,t1;
long WD1,WD2,WD3,WD4,ADdata;
WORD PWMData;
void main(void)
{
time1=0;
      PRT0IC0 |= 0x10;
      PRT0IC1 |= 0x10;
      PRT0IE |= 0x10;
      s1=0;
      M8C_EnableGInt;          // Enable Global Interrupt
      M8C_EnableIntMask(INT_MSK0, INT_MSK0_GPIO);
      PWM8_1_WritePeriod(255);
      PWM8_2_WritePeriod(255);
while(1)
{time1++;
swichset();
if(time1>=5000)
{
PWMData=(BYTE)PWMADCData ();
time1=0;
}

            WD2=PWMData*320;
            if(WD3<=WD2)
         {
         WD3=WD3+1;
         WD4=WD3/320;
      PWM8_2_WritePulseWidth(WD4);
         }
         else
         {
         WD3=WD3-1;
         WD4=WD3/320;
         PWM8_2_WritePulseWidth(WD4);
         }
}
}

/* *************************************************************************************************************** */

WORD PWMADCData (void)
{ int PWMData1,data1;
BYTE data;
      LoadConfig_DAC();
// perform sample only if the conguration is loaded properly
if (IsDACLoaded() )
{
         PGA_1_Start(PGA_1_MEDPOWER);
         ADCINC_1_Start(ADCINC_1_HIGHPOWER);    // Apply power to the SC Block
      ADCINC_1_GetSamples(0);                // Have ADC run continuously
            while(ADCINC_1_fIsDataAvailable() == 0); // Loop until value ready
      ADCINC_1_iClearFlagGetData();             // Clear ADC flag and get data
            PWMData1=ADCINC_1_iGetData()+2048;
         if(PWMData1>=16)
      {
      data1=PWMData1/16;
      }

            if(data1>=15)
            {
            data1=data1;
            }
            else
            {
            data1=0;
            }
         ADCINC_1_Stop();
      }

      UnloadConfig_DAC();
      return (data1) ;
}

/* *************************************************************************************************************** */

void swichset (void)
{

if(PRT0DR & 0x80)
            {
               while(PRT0DR & 0x80)
               {
               t1=t1+1;
               }
            }
            if(t1>2000)
            {
            WD=51;
            PWM8_1_WritePulseWidth(WD);
            PWM8_1_Start();
            PWM8_2_WritePulseWidth(0);
            PWM8_2_Start();
            t1=0;
            }
            else
            {
            t1=0;
            }
            if(PRT0DR & 0x20)
            {
               while(PRT0DR & 0x20)
               {
               t1=t1+1;
               }
            }
            if(t1>2000)
            {PWM8_1_WritePulseWidth(0);
               PWM8_2_WritePulseWidth(0);
               PWM8_1_Stop();
               PWM8_2_Stop();
               t1=0;
            }
            else
            {t1=0;}
            if(PRT1DR & 0x02)
            {
               while(PRT1DR & 0x02)
               {
               t1=t1+1;
               }
            }
            if(t1>2000)
            { t1=0;
               if(WD<=40)
               {WD=40;
               PWM8_1_WritePulseWidth(WD);}
               else
               {
               WD=WD-5;
               PWM8_1_WritePulseWidth(WD);
               }

            }
            else
            {t1=0;}
            if(PRT0DR & 0x08)
            {
               while(PRT0DR & 0x08) {
               t1=t1+1;
               }
            }
         if(t1>2000)
            {t1=0;
            if(WD>=200)
               {
               WD=200;
               PWM8_1_WritePulseWidth(WD);}
            else
               {
               WD=WD+5;
               PWM8_1_WritePulseWidth(WD);
               }
               }
            else
            {t1=0;}
}

1万 · 2017-2-15 21:47

我记得网上有动态重配置的例程的，你参考那个写下。

2万 · 2017-2-15 21:49

嗯，那我按大家的说法挨个排查一下，先结贴啦，谢谢哈