📄 chaoshengbo.c
字号:
12864液晶显示函数（三线串口驱动）：
/*****************************************************************
* *
* ME500单片机开发系统演示程序 - 12864 图片与文字显示 *
* *
* ST7920控制芯片(汉字库)，串口模式。 *
* *
* 版本： V1.0 (2006/11/20) *
* 作者： gguoqing (Email: gguoqing@willar.com) *
* 网站： www.willar.com(伟纳电子) www.mcusj.com(伟纳单片机世界) *
* 邮箱： support@willar.com *
* *
*【版权】COPYRIGHT(C)伟纳电子 www.willar.com ALL RIGHTS RESERVED *
*【声明】此程序仅用于学习与参考，引用请注明版权和作者信息！ *
* *
*****************************************************************/
/********** 12864LCD引脚定义 **********/
/*sbit CS = P2^5; //片选 高电平有效 单片LCD使用时可固定高电平
sbit SID = P2^7; //数据
sbit SCLK = P2^6; //时钟*/
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit CS = P2^0; //片选 高电平有效 单片LCD使用时可固定高电平
sbit SID = P2^1; //数据
sbit SCLK = P2^2; //时钟
/*********************************************************/
uchar code DIS11[] = {"危险距离"};
uchar code DIS12[] = {"安全距离"};
uchar code DIS13[] = {"保持距离"};
uchar code DIS14[] = {"测量中.........."};
uchar code DIS2[] = {"距离： 点 米"};
uchar code DIS3[] = {"星期"};
//uchar code DIS4[] = {"TEL:15878671024 "};
uchar code DIS5[] = {"H: L: "};
uchar code BMP1[] ={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xF9,0xFF,0xC0,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x04,0x0F,0xFF,0xF8,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x04,0x00,0x0E,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x01,0x80,0x00,0x00,0x00,
0x00,0x00,0x98,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x60,0x00,0x00,0x00,
0x00,0x03,0x98,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x30,0x00,0x00,0x00,
0x00,0x01,0x90,0x00,0x00,0x00,0x00,0x70,0x08,0x00,0x00,0x00,0x18,0x00,0x00,0x00,
0x00,0x00,0xD0,0x00,0x00,0x00,0x00,0x60,0x0C,0x00,0x00,0x00,0x0C,0x00,0x00,0x00,
0x00,0x0C,0xD0,0x00,0x00,0x00,0x00,0x66,0x0C,0x00,0x00,0x00,0x06,0x00,0x00,0x00,
0x00,0x0E,0x40,0x00,0x00,0x00,0x00,0x4E,0x0C,0x00,0x00,0x00,0x03,0x00,0x00,0x00,
0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x48,0x08,0x00,0x00,0x00,0x03,0x00,0x00,0x00,
0x00,0x00,0x18,0x00,0x00,0x00,0x00,0x10,0x98,0x00,0x00,0x00,0x03,0x80,0x00,0x00,
0x00,0x3E,0x1C,0x00,0x00,0x00,0x01,0x03,0x90,0x00,0x00,0x00,0x01,0x80,0x00,0x00,
0x00,0x3E,0x3E,0x00,0xFF,0xE0,0x03,0x8F,0xD0,0x00,0x00,0x00,0x01,0x80,0x00,0x00,
0x00,0x00,0x3F,0x07,0xFF,0xFC,0x07,0x40,0x33,0x00,0x00,0x00,0x00,0x80,0x00,0x00,
0x00,0x00,0x1F,0x9F,0xFF,0xFE,0x1F,0xCE,0x31,0x80,0x00,0x00,0x00,0xC0,0x00,0x00,
0x00,0x00,0x0F,0xFF,0xFF,0xFF,0xBF,0x83,0xB0,0x80,0x00,0x00,0x00,0xC0,0x00,0x00,
0x00,0x00,0x03,0xFF,0xFF,0xFF,0xFF,0x01,0xB0,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,
0x00,0x00,0x01,0xFF,0xFF,0xFF,0xFC,0x00,0x30,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,
0x00,0x00,0x03,0xFF,0xFF,0xFF,0xF8,0x00,0x30,0x00,0x00,0x00,0x00,0x40,0x00,0x00,
0x00,0x00,0x07,0xFF,0xFF,0xFF,0xF8,0x00,0x30,0x00,0x00,0x00,0x00,0x40,0x00,0x00,
0x00,0x00,0x07,0xFF,0x80,0x1F,0xF8,0x00,0x30,0x00,0x00,0x00,0x00,0x40,0x00,0x00,
0x00,0x00,0x0F,0xFE,0x00,0x03,0xFC,0x00,0x10,0x00,0x00,0x00,0x00,0xC0,0x00,0x00,
0x00,0x00,0x0F,0xF8,0x00,0x00,0xFC,0x00,0x10,0x00,0x00,0x00,0x00,0x80,0x00,0x00,
0x00,0x00,0x0F,0xF0,0x00,0x00,0x7E,0x00,0x10,0x00,0x00,0x00,0x00,0x80,0x00,0x00,
0x00,0x00,0x1F,0xC0,0x00,0x00,0x3E,0x00,0x18,0x00,0x00,0x00,0x00,0x80,0x00,0x00,
0x00,0x00,0x1F,0x80,0x00,0x00,0x1E,0x00,0x1B,0x00,0x00,0x00,0x01,0x80,0x00,0x00,
0x00,0x00,0x1F,0x00,0x00,0x00,0x0E,0x00,0x7B,0x00,0x00,0x00,0x01,0x00,0x00,0x00,
0x00,0x00,0x1E,0x08,0x00,0x04,0x0E,0x00,0x58,0x00,0x00,0x00,0x03,0x00,0x00,0x00,
0x00,0x00,0x1E,0x10,0x00,0x02,0x06,0x00,0x30,0x00,0x00,0x18,0x02,0x00,0x00,0x00,
0x00,0x00,0x1E,0x00,0x00,0x00,0x06,0x00,0x20,0xC0,0x00,0x06,0x06,0x00,0x00,0x00,
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0x00,0x00,0x0E,0x00,0x00,0x00,0x0C,0x00,0x0D,0xC0,0x00,0x00,0x60,0x00,0x00,0x00,
0x00,0x00,0x0E,0x00,0x00,0x00,0x0E,0x00,0x06,0x60,0x00,0x01,0xC0,0x00,0x00,0x00,
0x00,0x00,0x1E,0x00,0x00,0x00,0x0A,0x00,0x03,0x80,0x00,0x03,0x80,0x00,0x00,0x00,
0x00,0x00,0x12,0x00,0xC0,0x20,0x0A,0x00,0x00,0xE0,0x00,0x0E,0x00,0x00,0x00,0x00,
0x00,0x00,0x02,0x00,0xC0,0x70,0x0A,0x00,0x00,0x1C,0x00,0x7C,0x00,0x04,0x3C,0x00,
0x00,0x00,0x0E,0x00,0xC7,0x30,0x0C,0x00,0x00,0x0F,0xFF,0xE0,0x00,0x03,0xFC,0x00,
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0x00,0x00,0x00,0x00,0x10,0x18,0x00,0x00,0x04,0x00,0x81,0x00,0x00,0x00,0x7C,0x00,
0x00,0x00,0x00,0x00,0x10,0x14,0x00,0x00,0x04,0x00,0x41,0x00,0x00,0x00,0x78,0x00,
0x00,0x00,0x00,0x00,0x90,0xF0,0x00,0x00,0x0C,0x00,0x40,0xC0,0x00,0x00,0x40,0x00,
0x00,0x00,0x04,0x01,0x1F,0xF8,0x00,0x00,0x3F,0xC0,0x60,0x60,0x00,0x00,0x40,0x00,
0x00,0x00,0x08,0x06,0x1F,0xF8,0x80,0x00,0x21,0xFF,0xF0,0x30,0x00,0x00,0x40,0x00,
0x00,0x00,0x08,0x08,0x3F,0xFC,0x80,0x00,0x20,0x00,0x18,0x30,0x00,0x00,0x40,0x00,
0x00,0x00,0x08,0x08,0x3F,0xFC,0x80,0x00,0x20,0x00,0x0C,0x30,0x00,0x00,0x00,0x00,
0x00,0x00,0x04,0x04,0x7F,0xFC,0x00,0x00,0x00,0x00,0x07,0x10,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x01,0x7F,0xFD,0x00,0x00,0x10,0x00,0x01,0xE0,0x00,0x00,0x00,0x00,
0x00,0x00,0x02,0x03,0xFF,0xFD,0x00,0x00,0x10,0x0F,0x00,0x00,0x00,0x00,0x00,0x00,
};
uchar code AC_TABLE[]={
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, //第一行汉字位置
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97, //第二行汉字位置
0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f, //第三行汉字位置
0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f, //第四行汉字位置
};
/********************************************************
* *
* 延时t毫秒 *
* 11.0592MHz时钟，延时约1ms *
* *
********************************************************/
void delay(uint t)
{
uchar k;
while(t--)
{
for(k=0; k<125; k++)
{ }
}
}
/*********************************************************
* *
* 延时函数 200us *
* *
*********************************************************/
void delay_lcd(int ms)
{
uchar t;
while(ms--)
{
for(t=0; t<20; t++) ;
}
}
/******************************************************************************************
* 函数名称 ：SendByte
* 功能描述 ：串口发送一个字节
* 参数 ： 参数名称： 输入/输出？ 类型 描述
*
* 返回值 ：
* 作者 ：
* 创建日期 ：2006-12-19
* 全局变量 ：
* 全局静态变量：
* 局部静态变量：
*----------------------------------------修改历史------------------------------------------
* 当前版本 ： 修改人： 修改日期：
* 修改说明 ：
******************************************************************************************/
void SendByte(uchar Dbyte)
{
uchar i;
for(i=0;i<8;i++)
{
SCLK = 0;
Dbyte=Dbyte<<1; //左移一位
SID = CY; //移出的位给SID
SCLK = 1;
SCLK = 0;
}
}
/******************************************************************************************
* 函数名称 ：ReceiveByte
* 功能描述 ：串口接收一个字节
* 参数 ： 参数名称： 输入/输出？ 类型 描述
* 仅在读取数据的时候用到
* 而读出的数据是一次只能读出4bit的
* 返回值 ：
* 作者 ：
* 创建日期 ：2006-12-19
* 全局变量 ：
* 全局静态变量：
* 局部静态变量：
*----------------------------------------修改历史------------------------------------------
* 当前版本 ： 修改人： 修改日期：
* 修改说明 ：
******************************************************************************************/
uchar ReceiveByte(void)
{
uchar i,temp1,temp2;
temp1 = 0;
temp2 = 0;
for(i=0;i<8;i++)
{
temp1=temp1<<1;
SCLK = 0;
SCLK = 1;
SCLK = 0;
if(SID) temp1++;
}
for(i=0;i<8;i++)
{
temp2=temp2<<1;
SCLK = 0;
SCLK = 1;
SCLK = 0;
if(SID) temp2++;
}
return ((0xf0&temp1)+(0x0f&temp2));
}
/******************************************************************************************
* 函数名称 ：CheckBusy
* 功能描述 ：
* 参数 ： 参数名称： 输入/输出？ 类型 描述
*
* 返回值 ：
* 作者 ：
* 创建日期 ：2006-12-19
* 全局变量 ：
* 全局静态变量：
* 局部静态变量：
*----------------------------------------修改历史------------------------------------------
* 当前版本 ： 修改人： 修改日期：
* 修改说明 ：
******************************************************************************************/
void CheckBusy( void )
{
do SendByte(0xfc); //11111,RW(1),RS(0),0
while(0x80&ReceiveByte()); //BF(.7)=1 Busy
}
/******************************************************************************************
* 函数名称 ：WriteCommand
* 功能描述 ：
* 参数 ： 参数名称： 输入/输出？ 类型 描述
*
* 返回值 ：
* 作者 ：
* 创建日期 ：2006-12-19
* 全局变量 ：
* 全局静态变量：
* 局部静态变量：
*----------------------------------------修改历史------------------------------------------
* 当前版本 ： 修改人： 修改日期：
* 修改说明 ：
******************************************************************************************/
void WriteCommand(uchar Cbyte )
{
CS = 1;
CheckBusy();
SendByte(0xf8); //11111,RW(0),RS(0),0
SendByte(0xf0&Cbyte); //高四位
SendByte(0xf0&Cbyte<<4);//低四位(先执行<<)
CS = 0;
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