LCD1602 proteus仿真及代码

ID:609397 · 发表于 2019-9-9 10:38

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define out P0
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
void lcd_initial();
void check_busy();
void write_command(uchar com);
void write_data(uchar dat);
void string(uchar ad,uchar *s);
void delay(uint);
void main()
{
lcd_initial();
   while(1)
   {
   string(0x85,"WLECOME");
   string(0xC2,"Harbin CHINA");
   delay(100);
   write_command(0x01);
   delay(100);

   }
}

void delay(uint j)
{
uchar i=250;
for(;j>0;j--)
{
      while(--i);
      i=249;
      while(--i);
      i=250;

}
}

void check_busy()
{
uchar dt;
do
{
      dt=0xff;
      E=0;
      RS=0;
      RW=1;
      E=1;
      dt=out;

}while(dt&0x80);
      E=0;
}
void write_command(uchar com)
{
check_busy();
E=0;
RS=0;
RW=0;
out=com;
E=1;
_nop_();
E=0;
delay(1);

}
void write_data(uchar dat)
{
check_busy();
E=0;
RS=1;
RW=0;
out=dat;
E=1;
_nop_();
E=0;
delay(1);

}
void lcd_initial()
{
write_command(0x38);
write_command(0x0C);
write_command(0x06);
write_command(0x01);
delay(1);
}
void string(uchar ad,uchar *s)
{
write_command(ad);
while(*s>0)
{
      write_data(*s++);
      delay(100);
}
}

ID:419166 · 发表于 2019-10-13 14:54

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LCD1602 proteus仿真及代码

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