超牛PWM控制_調(diào)頻+PWM+調(diào)端口

ID:475247 · 發(fā)表于 2020-3-23 10:19

超牛PWM控制_調(diào)頻+PWM+調(diào)端口

#include<reg51.h>
#define uint  unsigned int
#define uchar unsigned char

sbit PWMP2^0;
sbit LED2=P2^1;
sbit LED3=P2^2;
sbit LED4=P2^3;
sbit LED5=P2^4;
sbit LED6=P2^5;
sbit LED7=P2^6;
sbit LED8=P2^7;
sbit SW=P1^0;
sbit SW2=P1^1;
sbit SW3=P1^2;

uint  time;    //定義占空比的變量
uchar num, con, jac, op, ss, pio;
uchar sec = 10, tme = 1;

void op_sw(void);
void ss_sw(void);
void sw_sw(void);
void pio_sw(void);

void main()
{
P2 = 0;
      TMOD=0x01;//定時(shí)器0工作方式1
      TH0=(65536-10)/256;//賦初值定時(shí) //0xff;
      TL0=(65536-10)%256;//0.01ms //0xf7
      EA=1;//開(kāi)總中斷
      ET0=1;//開(kāi)定時(shí)器0中斷
      TR0=1;//啟動(dòng)定時(shí)器0

      pio = 1;

      while(1)
      {
      void sw_sw(void);
      }
}

void tim0() interrupt 1
{
      TR0=0;
      TH0=(65536-10)/256;
      TL0=(65536-10)%256;
      TR0=1;
      time++;

      if(time>=100)
            time=0;
      if(time <= (sec))
            PWM=1;
      else PWM=0;

      inter_sw() ;
      op_sw();
      ss_sw();
      pio_sw();
}

詳見(jiàn)附件

調(diào)速 PWM .rar (16.5 KB, 下載次數(shù): 85)