#include<stc12c5a60s2.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
//这三个引脚参考资料
sbit LCD1602_EN=P3^3; //1602使能引脚
sbit LCD1602_RW=P3^4; //1602读写引脚
sbit LCD1602_RS=P3^5; //1602数据/命令选择引脚
#define LCDPORT P0 //液晶的数据口
unsigned char code ucForum[]="123456789"; //在CODE区定义一个用于显示的常量字符串
unsigned char ab;
void Delay(unsigned int uiCount); //延时函数
void LCD1602_CheckBusy(void); //液晶忙检测
void LCD1602_WriteInformation(unsigned char ucData,bit bComOrData); //在液晶上写数据或者写命令,0为命令,1为数据
void LCD1602_Init(void); //液晶初始化
void LCD1602_MoveToPosition(unsigned char x,unsigned char y); //液晶的坐标移动到指定位置
void LCD1602_DisplayOneCharOnAddr(unsigned char x,unsigned char y,unsigned char ucData); //在液晶指定位置显示字符
void LCD1602_DisplayString(unsigned char *ucStr); //在液晶上显示字符串
void re()
{ab=100;
}
/******************************************************************************
函数名称:main
函数功能:程序主函数
入口参数:无
返回值:无
备注:无
*******************************************************************************/
void main(void)
{
LCD1602_Init(); //液晶初始化
re();
while(1) //程序循环
{
LCD1602_DisplayOneCharOnAddr(0,0,'A'); //在液晶的第1个位置显示1
LCD1602_DisplayOneCharOnAddr(0,1,'B'); //在液晶的第2个位置显示A
LCD1602_DisplayOneCharOnAddr(0,2,'C'); //在液晶的第3个位置显示2
LCD1602_DisplayOneCharOnAddr(0,3,'D'); //在液晶的第4个位置显示B
LCD1602_DisplayOneCharOnAddr(0,4,'E'); //在液晶的第5个位置显示3
LCD1602_DisplayOneCharOnAddr(0,5,'F'); //在液晶的第6个位置显示C
LCD1602_DisplayOneCharOnAddr(0,7,ab/100+0x30);
LCD1602_DisplayOneCharOnAddr(0,8,ab/10+0x30);
LCD1602_DisplayOneCharOnAddr(0,9,ab%10+0x30);
LCD1602_MoveToPosition(1,0); //显示位置移动到指定位置
LCD1602_DisplayString(ucForum); //显示的内容
while(1);
}
}
void LCD1602_CheckBusy(void)
{
unsigned char i = 255;
LCDPORT = 0xFF; //读之前先置位,准备读取IO口数据
LCD1602_RS = 0;
LCD1602_RW = 1; //使液晶处于读数据状态
LCD1602_EN = 1; //使能液晶,高电平有效
while((i--) && (LCDPORT & 0x80)); //忙检测
LCD1602_EN = 0;
}
void LCD1602_WriteInformation(unsigned char ucData,bit bComOrData)
{
LCD1602_CheckBusy(); //在写入数据或者命令前先进行忙检测
LCDPORT = ucData; //先将数据或者命令送至IO
LCD1602_RS = bComOrData; //确定是写入数据还是写命令
LCD1602_RW = 0; //使液晶处于写入信息状态
LCD1602_EN = 1; //使能液晶,高电平有效
LCD1602_EN = 0;
}
void LCD1602_Init(void)
{
LCD1602_WriteInformation(0x38,0);
Delay(300);
LCD1602_WriteInformation(0x38,0);
Delay(100);
LCD1602_WriteInformation(0x38,0);
Delay(100);
LCD1602_WriteInformation(0x38,0); //写入命令,5x7点阵工作方式,8位数据接口
Delay(100);
LCD1602_WriteInformation(0x0c,0); //显示设置,开显示,光标不显示,不闪烁
Delay(20);
LCD1602_WriteInformation(0x01,0); //清屏指令
Delay(20);
}
void LCD1602_MoveToPosition(unsigned char x,unsigned char y)
{
if(0 == x)
LCD1602_WriteInformation((0x80 | y),0); //光标定位到第一行的y列
if(1 == x)
LCD1602_WriteInformation((0xC0 | y),0); //光标定义到第二行的y列
}
void LCD1602_DisplayOneCharOnAddr(unsigned char x,unsigned char y,unsigned char ucData)
{
LCD1602_MoveToPosition(x,y); //光标位置
LCD1602_WriteInformation(ucData,1); //写入数据
}
void LCD1602_DisplayString(unsigned char *ucStr)
{
while(*ucStr != '\0') //字符串结束之前,循环显示
{
LCD1602_WriteInformation(*ucStr,1); //依次写入每一个字符
ucStr++; //指针增加
}
}
void Delay(unsigned int uiCount)
{
unsigned char j = 244;
for(;uiCount > 0;uiCount--) while(--j);
}
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