有谁遇到过51单片机的LCD对pwm波的输出有影响

ID:215224 · 发表于 2017-12-10 20:46

普中的stc89c52LCD会影响到pwm的输出吗,LCD用到了p2^5---p2^7和p2口,pwm的用到的是p3^4口#include "lcd.h"#include <REG52.H>
#define PLUS_PER 330
extern int  interruptcounter;       //ía2¿ÖD¶Ï′Îêy
extern unsigned int speed ;
extern unsigned long PlusCounter;    //ía2¿Âö3å¸öêy
void LCD_Write_String(unsigned char *p);
void LcdWriteData(uchar dat);                //D′èëêy¾Y
void LcdWriteCom(uchar com) ;                //D′èëÃü
void LcdInit();                      //LCD3õê¼»ˉ×ó3ìDò
void gotoxy(unsigned char x,unsigned char y); //ÔúxDDyáDÏÔê¾êy¾Y
void ClacSpeed()                            //êy¾Y′|àíoˉêy
{ int speed ;
   unsigned long PlusCounter;
      PlusCounter =interruptcounter;
      speed =(PlusCounter/PLUS_PER)*60;//Ã¿·ÖÖóμÄ×aêy
   {
//    gotoxy(1,1);
//    LCD_Write_String("V= ");
//    gotoxy(1,3);
//    LcdWriteData((speed/1000)%10+0x30);
//    gotoxy(1,4);
//    LcdWriteData((speed/100)%10+0x30);
//    gotoxy(1,5);
//    LcdWriteData((speed/10)%10+0x30);
//    gotoxy(1,6);
//    LcdWriteData(speed%10+0x30);
//    gotoxy(1,7);
//    LCD_Write_String("r");
//    gotoxy(1,8);
//    LCD_Write_String("/");
//    gotoxy(1,9);
//    LCD_Write_String("m");
//    gotoxy(1,10);
//    LCD_Write_String("i");
//    gotoxy(1,11);
//    LCD_Write_String("n");
   interruptcounter=0;
   }
  }
void gotoxy(unsigned char x,unsigned char y) //ÔúxDDyáDÏÔê¾êy¾Y
{
if(x==1)
{
     LcdWriteCom(0x80+y-1);
}
if(x==2)
   {
     LcdWriteCom(0xc0+y-1);
   }
}