[新人]基于单片机的直流电机pwm控制求指点 -

标题: [新人]基于单片机的直流电机pwm控制求指点 [打印本页]

作者: z1161948857zxc 时间: 2018-7-12 12:58
标题: [新人]基于单片机的直流电机pwm控制求指点
数码管显示转速实在是不太会，求大神指点一下

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作者: z1161948857zxc 时间: 2018-7-12 13:00
附部分程序
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit sta = P1 ^ 2;          // Æô¶ˉ
sbit bac = P1 ^ 3;       // ·′Ïò
sbit pwma = P1 ^ 4;    //  Õ¼¿Õ±è¼õ
sbit pwms = P1 ^ 5;    //  Õ¼¿Õ±è¼ó
sbit pwm = P3 ^ 7;
uint number = 0;
uint Zhan = 50;
uint Flag = 0;
void Delay_1ms(uint x)
{
      uint i;
      uint j;
   for (i = 0; i < x; i++)
   for (j = 0; j < 148; j++);
}
void Timer0Init()
{
      TMOD = 0x01;
      ET0 = 1;
      EA = 1;
      TH0 = (65536 - 100) / 256;
      TL0 = (65536 - 100) % 256;
      TR0 = 1;
}
void main()
{
      Timer0Init();
      P3 = 0xFF;
   while (1)
      {
            if (sta == 0)
            {
                  Delay_1ms(200);
                  P3 = 0xFE;
                  Flag = ~Flag;
            }
            if (bac == 0)
            {
                              Delay_1ms(200);
                                 P3 = ~P3;
                     }
                     if (pwma == 0)
                     {
                                 Delay_1ms(100);
                                 Zhan++;
                     }
                     if (pwms == 0)
                     {
                                 Delay_1ms(100);
                              Zhan--;
                     }
                     if (Flag == 0)
                     {
                                 P3 = 0xFF;
                     }
                     if(Zhan>100)
                                          Zhan=0;
         }
}

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