lcd_driver.c

用C8051F芯片完成的温度远程采集程序,发送,接受两个模块通信完成,内嵌CRC算法.

#include <c8051f020.h>
#include "lcd_driver.h"
#include "delay.h"
//#include <intrins.h>
//---------------------------------
#define uchar  unsigned char
#define uint   unsigned int
//--------------------------------

//-----------------------------------
uchar    a=0x80;
//检查忙信号 -------------------------
check_busy(void)
{
    uchar  i,bf,temp;
    P5=0xff;
    temp=P5;
    temp=temp&0x80;
    bf=0x80&&temp;
    for(i=0;i<5;i++)  
    {
     if(bf==0)
       {
        P4 &=~0x04;
        break;
       }
     delay(1,10);
    }   
    P4 &=~0x04;
}


void LCD_data(uchar y)
{ 
  check_busy();
  delay(100,100);     
  P4=0x01;           /*RS=1,RW=0*/  
  P5=y;    
  delay(1,1);
  P4 |=0x04;         /*EN=1*/
  delay(1,1);
  P4 &=~0x04;        /*EN=0*/
  a++;
  dispmove(); 
}
void LCD_string(uchar row,uchar column,uchar *dis_buffer)     //发送一串字符
{
   uchar i=0;
   a=(row+1)*0x40+column-0x01;
   LCD_cmd(a);
   while(dis_buffer[i]!='\0')
    {
       LCD_data(dis_buffer[i]);
       i++;
    }
}

void LCD_clear_line(uchar line)
{
   uchar i;
   a=(line+1)*0x40;
   LCD_cmd(a);
   for(i=0;i<16;i++)
     LCD_data(0x20);
}
//写控制命令-----------------------------
void LCD_cmd(uchar z) 
{  
   check_busy();
   delay(100,100);
   P4=0x00;           //RS=0,RW=0
   P5=z;
   delay(10,1);
   P4 |=0x04;         //EN=1
   delay(1,1);
   P4 &=~0x04;        //EN=0
    
}
//换行函数----------------------------

void dispmove()
{  
  if(a==0x90)     //换到下行
    {
     a=0x0C0;
     LCD_cmd(0xC0);   
    }
  if(a==0xd1)    //回首行
    {  
     a=0x080;
     LCD_cmd(0x01);
     LCD_cmd(0x80);  //写首地址
    }
}
//lcd的初始化---------------------------
void LCD_Init()
{ 
   LCD_cmd(0x01);
   LCD_cmd(0x38);
   LCD_cmd(0x0c); //显示光标并闪烁
   LCD_cmd(0x01);
   LCD_cmd(0x06);
   LCD_cmd(0x80);
   LCD_cmd(0x02);

   
}
//////////////////////////////////////