51單片機(jī)LCD1602驅(qū)動代碼視頻仿真

ID:46381 · 發(fā)表于 2019-3-14 10:24

#include "Config.h"
#include <intrins.h>
sbit RS = P2^0;
sbit RW = P2^1;
sbit E= P2^2;
void LCD1602_delay_10us(unsigned char i)
{
      unsigned char j;
      while(i--)
      for(j=0;j<10; j++)
            ;
}
void LCD1602_delay_1ms(unsigned char i)
{
      unsigned char j;
      while(i--)
            ;
      for(j=0;j<125;j++)
            ;
}
void LCD1602_Write_Cmd(unsigned char cmd)
{
      LCD1602_delay_10us(5);
      E=0;
      RS=0;
      RW=0;
      LCD_PORT=cmd;
      LCD1602_delay_10us(5); //>40us
      E=1;
      LCD1602_delay_1ms(2); //>150us
      E=0;
      LCD1602_delay_10us(4); //>25+10us?
}
void LCD1602_Write_Dat(unsigned char dat)
{
      LCD1602_delay_10us(5);
      E=0;
      RS=1;
      RW=0;
      LCD_PORT = dat;
      LCD1602_delay_10us(5);
      E=1;
      LCD1602_delay_10us(5);
      E=0;
      LCD1602_delay_10us(4);
}
void LCD1602_Addr_x_y(unsigned char x,bit y)
{
      unsigned char temp=0x80;
      if(y)
      {
            temp|=0x40;
      }
      temp|=x;
      LCD1602_Write_Cmd(temp);
}
void LCD1602_Show_Char(unsigned char x,bit y,unsigned char p)
{
      LCD1602_Addr_x_y(x,y);
      LCD1602_Write_Dat(p);
}
void LCD1602_Show_String(unsigned char x,bit y,char *ptr,unsigned char data_len)
{
      unsigned char i;
      for (i=0;i<data_len;i++)
            {
            LCD1602_Show_Char(x++,y,*(ptr+i));
            }
}
void LCD1602_Init(void)
{
      LCD1602_delay_1ms(1500);
      LCD1602_Write_Cmd(0x38);
      LCD1602_delay_1ms(5);
      LCD1602_Write_Cmd(0x38);
      LCD1602_delay_1ms(5);
      LCD1602_Write_Cmd(0x38);
      LCD1602_delay_1ms(5);
      LCD1602_Write_Cmd(0x38);
      LCD1602_Write_Cmd(0x08);
      LCD1602_Write_Cmd(0x06);
      LCD1602_Write_Cmd(0x0c);
      LCD1602_Write_Cmd(0x01);
}
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