lcd_61.c

最近开发的51单片机多功能 实验板

//LCD1602 Driver  Create by  nie xiong 2006.11.18 
#inculde "spce061V004.h"
#define DC1  0x0100 // IOA8  Set 1
#define DC0  0xfeff   //Set 0
#define RW1  0x0200 // IOA9
#define RW0  0xfdff   //Set 0
#define CS1  0x0400 // IOA10 
#define CS0  0xfbff    //Set 0
#define LCDBUS  *P_IOA_Buffer  // IOA0~IOA7 Data
unsigned int sys10mscounter;
//unsigned char syslimitcounter;
char path1[8]={0x00,0x1f,0x00,0x1f,0x00,0x1f,0x00,0x1f};/*自定义符号：横1*/
char path2[8]={0x1f,0x00,0x1f,0x00,0x1f,0x00,0x1f,0x00};/*自定义符号：横2*/
char pats1[8]={0x15,0x15,0x15,0x15,0x15,0x15,0x15,0x15};/*自定义符号：竖1*/
char pats2[8]={0x0a,0x0a,0x0a,0x0a,0x0a,0x0a,0x0a,0x0a};/*自定义符号：竖2*/
void soft_nop(){}
void soft_10ms()/***********12MHZ 提供10MS 软件延时************/
{ 	register int i;
	for(i=0;i<711;i++);
}
void soft_20ms()/***********12MHZ 提供20MS 软件延时************/
{ 	soft_10ms();
	soft_10ms();
}
void hard_10ms(unsigned int delaytime) /*基于10MS 的硬件延时*/
{ 	sys10mscounter=delaytime;
	while(sys10mscounter--) soft_10ms();
}
unsigned char data lcdcounter;
unsigned int  lcdusing1,lcdusing2;
unsigned int  lcd_checkbusy()/*检查LCD 忙*/
{ 	register lcdstate;
	LCDBUS &= DC0;  //DC=1为数据,=0为命令.
	LCDBUS |= RW1;  //RW=1为读,=0为写.
	LCDBUS |= CS1;  //CS=1选通.
	soft_nop();
	lcdstate=LCDBUS & 0x00ff;	
	LCDBUS &= CS0;
	return((unsigned int )(lcdstate&0x80));
}
void lcd_wrcmd(unsigned char lcdcmd) /*写LCD 命令*/
{ 	lcdusing1=1;
	while(lcd_checkbusy());
	LCDBUS &=0xff00;
	LCDBUS |= lcdcmd;
	LCDBUS &= DC0;
	LCDBUS &= RW0;
	LCDBUS |= CS1;
	soft_nop();		
	LCDBUS &= CS0; 	
	LCDBUS |=0x00ff;
	lcdusing1=0;
}
void lcd_moveto(char position) /*移动光标到指定位.0-79*/
{ 	register cmd=0x80;
	lcdcounter=position;
	if (position > 59)
		position += 0x18;
	else
	{ 	if (position > 39)position -= 0x14;
		else
		{ if (position > 19)position += 0x2c;
		}
	}
	cmd=cmd|position;
	lcd_wrcmd(cmd);
}
void lcd_wrdata(char lcddata) /*在当前显示位置显示数据*/
{ 	char i;
	lcdusing2=1;
	while(lcd_checkbusy());
	if(lcdcounter==20){
		lcd_moveto(20);
		while(lcd_checkbusy());
	}
	if(lcdcounter==40){
	lcd_moveto(40);
	while(lcd_checkbusy());
	}
	if(lcdcounter==60){
		lcd_moveto(60);
		while(lcd_checkbusy());
	}
	if(lcdcounter==80){
		lcd_moveto(0);
		while(lcd_checkbusy());
		lcdcounter=0;
	} /*为通用而如此*/
	lcdcounter++;
	LCDBUS &=0xff00;
	LCDBUS |= lcddata;
	LCDBUS |= DC1; //DC=1为数据,=0为命令.
	LCDBUS &= RW0; //RW=1为读,=0为写.
	LCDBUS |= CS1; //CS=1选通.
	soft_nop();		
	LCDBUS &= CS0; 	
	LCDBUS |=0x00ff;
	lcdusing2=0;
}

void lcd_string(char *strpoint) /*在当前显示位置显示LCD 字符串*/
{ 	register i=0;
	while(strpoint[i]!=0){
		lcd_wrdata(strpoint[i]);
		i++;
	}
}
void lcd_init()/*初始化*/
{ 	lcd_wrcmd(0x38); /*设置8 位格式,2 行,5*7*/
	lcd_wrcmd(0x0c); /*整体显示,关光标,不闪烁*/
	lcd_wrcmd(0x06); /*设定输入方式,增量不移位*/
	lcd_wrcmd(0x01); /*清除显示*/
	lcdcounter=0;
}
void lcd_cls()/*清除显示*/
{ 	lcd_wrcmd(0x01);
	lcdcounter=0;
}

main()
{
	unsigned char j;
	IE=0;P0=0xff;P1=0xff;P2=0xff;P3=0xff; /*初始化T*/
	lcd_init();soft_20ms();

/*	TMOD=0x51;
	TH0=0xd8; //12M,10ms
	TL0=0xf6;
	TR0=1;ET0=1;EA=1;
*/
	while(1)
	{
	/*全黑、横一、横二、竖一、竖二、U、Q、ABCD...，*/
		lcd_init(); /*全黑*/
		for(j=0;j<80;j++){lcd_wrdata(0xff);}
		hard_10ms(50);
		lcd_init(); /*横一，可参考自行设计符号*/
		lcd_wrcmd(0x40);
		for(j=0;j<8;j++)lcd_wrdata(path1[j]);
		for(j=0;j<100;j++)lcd_wrdata(0);
		hard_10ms(50);
		lcd_init(); /*横二*/
		lcd_wrcmd(0x40);
		for(j=0;j<8;j++)lcd_wrdata(path2[j]);
		for(j=0;j<100;j++)lcd_wrdata(0);
		hard_10ms(50);
		lcd_init(); /*竖一*/
		lcd_wrcmd(0x40);
		for(j=0;j<8;j++)lcd_wrdata(pats1[j]);
		for(j=0;j<100;j++)lcd_wrdata(0);
		hard_10ms(50);
		lcd_init(); /*竖二*/
		lcd_wrcmd(0x40);
		for(j=0;j<8;j++)lcd_wrdata(pats2[j]);
		for(j=0;j<100;j++)lcd_wrdata(0);
		hard_10ms(50);
		lcd_init();
		lcd_string("UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU");
		hard_10ms(50);
		lcd_init();
		lcd_string("QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ");
		hard_10ms(50);
		lcd_init();
		lcd_string("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz0123456789+-!#$%&?");
		hard_10ms(50);
	}
}