51单片机IO直接驱动LCD6402显示实时温度源程序 -

标题: 51单片机IO直接驱动LCD6402显示实时温度源程序 [打印本页]

作者: tty397 时间: 2022-7-7 08:58
标题: 51单片机IO直接驱动LCD6402显示实时温度源程序
IO直接驱动

单片机源程序如下:
//================================
void data_display()
{
lcd_segbuf[0]=lcd_data_buf[3]&0x0f;
lcd_segbuf[1]=(lcd_data_buf[4]&0xf0)>>4;
}

//================================

void main(void)
{
      IO_INT();                //IO口初始化             main.c
   CLK_INT();       //时钟设置初始化       main.c

      clr_wtd();

      lcd_int();
         init_global_value();  //初始化全局变量       key.c

      Init_Open_T0();
   while(1)
            {
                     data_display();
                        clr_wtd();
               }
}

  unsigned char seg_cnt=0;
//=============================
void  timer0(void) interrupt  INTERRUPT_TIMER0
{
      static unsigned char lcd_buf=0;
      static unsigned char lcd_cnt=0;

      TL0 = (65536-200)%256;          //重装初始值
      TH0 = (65536-200)/256;

      if(++lcd_cnt==10)
      {
                  lcd_cnt=0;
               switch(seg_cnt)
               {
                        case 0:       P1DIR=0xfe;
                                       P1=0x00;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0x03)<<0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0x03)<<2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0x03)<<4;
                                       if(model_flag==1)
                                       {
                                                lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x03)<<6;
                                       }
                                       else
                                       {
                                                lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x02)<<6;
                                       }
                                       P0=lcd_buf;
                                       break;

                     case 1:       P1DIR=0xfe;
                                       P1=0x01;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0x03)<<0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0x03)<<2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0x03)<<4;
                                       if(model_flag==1)
                                       {
                                                lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x03)<<6;
                                       }
                                       else
                                       {
                                                lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x02)<<6;
                                       }
                                       P0=lcd_buf^0xff;
                                       break;

                     case 2:       P1DIR=0xfd;
                                       P1=0x00;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0x0c)>>2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0x0c)<<0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0x0c)<<2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x0c)<<4;
                                       P0=lcd_buf;
                                       break;

                     case 3:       P1DIR=0xfd;
                                       P1=0x02;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0x0c)>>2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0x0c)<<0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0x0c)<<2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x0c)<<4;
                                       P0=lcd_buf^0xff;
                                       break;

            case 4:       P1DIR=0xfb;
                                       P1=0x00;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0x30)>>4;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0x30)>>2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0x30)<<0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x30)<<2;
                                       P0=lcd_buf;
                                       break;

                     case 5:       P1DIR=0xfb;
                                       P1=0x04;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0x30)>>4;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0x30)>>2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0x30)<<0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0x30)<<2;
                                       P0=lcd_buf^0xff;
                                       break;

                     case 6:       P1DIR=0xf7;
                                       P1=0x00;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0xc0)>>6;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0xc0)>>4;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0xc0)>>2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0xc0)<<0;
                                       P0=lcd_buf;
                                       break;

                     case 7:       P1DIR=0xf7;
                                       P1=0x08;
                                       lcd_buf=0;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[0]]&0xc0)>>6;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[1]]&0xc0)>>4;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[2]]&0xc0)>>2;
                                       lcd_buf|=(lcd_seg[lcd_segbuf[3]]&0xc0)<<0;
                                       P0=lcd_buf^0xff;
                                       break;
                     default: break;
               }
               seg_cnt++;
               if(seg_cnt>7)
               seg_cnt=0;
      }

}

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