C51单片机，128*64串口LCD驱动
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CA12864K 串口C51演示程序
// CA12864K 测试程序(串口)
//***************************************************************************
//连线表: CPU=89C52 SystemClock=12Mhz *
//CS=P3.0 SCLK=P3.1 SID=P3.2 Reset=RC in Board *
//***************************************************************************
#include
#include
#include
#include
sbit CS =P3^0;
sbit SCK=P3^1;
sbit SID=P3^2;
sbit Key=P3^4;
unsigned char 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
};
unsigned char code str2[]="欢迎光临sunson!!";
unsigned char code str1[]="黄河远上白云间，一片孤城万仞山。羌笛何须怨杨柳，春风不度玉门关。";
unsigned char code bmp1[];
//串口发送一个字节
void SendByte(unsigned char Dbyte)
{
unsigned char i;
for(i=0;i<8;i++)
{
SCK = 0;
Dbyte=Dbyte<<1; //左移一位
SID = CY; //移出的位给SID
SCK = 1;
SCK = 0;
}
}
//串口接收一个字节
//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
unsigned char ReceiveByte(void)
{
unsigned char i,temp1,temp2;
temp1=temp2=0;
for(i=0;i<8;i++)
{
temp1=temp1<<1;
SCK = 0;
SCK = 1;
SCK = 0;
if(SID) temp1++;
}
for(i=0;i<8;i++)
{
temp2=temp2<<1;
SCK = 0;
SCK = 1;
SCK = 0;
if(SID) temp2++;
}
return ((0xf0&temp1)+(0x0f&temp2));
}
void CheckBusy( void )
{
do SendByte(0xfc); //11111,RW(1),RS(0),0
while(0x80&ReceiveByte()); //BF(.7)=1 Busy
}
void WriteCommand( unsigned char 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;
}
void WriteData( unsigned char Dbyte )
{
CS = 1;
CheckBusy();
SendByte(0xfa); //11111,RW(0),RS(1),0
SendByte(0xf0&Dbyte); //高四位
SendByte(0xf0&Dbyte<<4);//低四位(先执行<<)
CS = 0;
}
unsigned char ReadData( void )
{
CheckBusy();
SendByte(0xfe); //11111,RW(1),RS(1),0
return ReceiveByte();
}
void Delay(unsigned int MS)
{
unsigned char us,usn;
while(MS!=0) //for 12M
{ usn = 2;
while(usn!=0)
{
us=0xf5;
while (us!=0){us--;};
usn--;
}
MS--;
}
}
//松山电子测试架专用延时函数
void DelayKey(unsigned int Second , unsigned int MS100)
{ //输入精确到0.1S,是用","
unsigned int i;
for(i=0;i { if(Key==0) { Delay(20); while(Key==0) {Delay(20);} break; } else Delay(10); } } void LcmInit( void ) { WriteCommand(0x30); //8BitMCU,基本指令集合 WriteCommand(0x03); //AC归0,不改变DDRAM内容 WriteCommand(0x0C); //显示ON,游标OFF,游标位反白OFF WriteCommand(0x01); //清屏,AC归0 WriteCommand(0x06); //写入时,游标右移动 } //文本区清RAM函数 void LcmClearTXT( void ) { unsigned char i; WriteCommand(0x30); //8BitMCU,基本指令集合 WriteCommand(0x80); //AC归起始位 for(i=0;i<64;i++) WriteData(0x20); } //图形区和文本区显示在两个不同的RAM区 //图形区清RAM函数 void LcmClearBMP( void ) { unsigned char i,j; WriteCommand(0x34); //8Bit扩充指令集,即使是36H也要写两次 WriteCommand(0x36); //绘图ON,基本指令集里面36H不能开绘图 for(i=0;i<32;i++) //12864实际为256x32 { WriteCommand(0x80|i); //行位置 WriteCommand(0x80); //列位置 for(j=0;j<32;j++) //256/8=32 byte WriteData(0); } } void PutStr(unsigned char row,unsigned char col,unsigned char *puts) { WriteCommand(0x30); //8BitMCU,基本指令集合 WriteCommand(AC_TABLE[8*row+col]); //起始位置 while(*puts != '/0') //判断字符串是否显示完毕 { if(col==8) //判断换行 { //若不判断,则自动从第一行到第三行 col=0; row++; } if(row==4) row=0; //一屏显示完,回到屏左上角 WriteCommand(AC_TABLE[8*row+col]); WriteData(*puts); //一个汉字要写两次 puts++; WriteData(*puts); puts++; col++; } } void PutBMP(unsigned char *puts) { unsigned int x=0; unsigned char i,j; WriteCommand(0x34); //8Bit扩充指令集,即使是36H也要写两次 WriteCommand(0x36); //绘图ON,基本指令集里面36H不能开绘图 for(i=0;i<32;i++) //12864实际为256x32 { WriteCommand(0x80|i); //行位置 WriteCommand(0x80); //列位置 for(j=0;j<32;j++) //256/8=32 byte { //列位置每行自动增加 WriteData(puts[x]); x++; } } } //松山电子测试用点阵显示 void DisplayDots(unsigned char DotByte) { unsigned char i,j; WriteCommand(0x34);
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