問(wèn)個(gè)1602的顯示問(wèn)題(C語(yǔ)言)

我在做1602顯示的時(shí)候發(fā)現(xiàn):
定位在某一個(gè)位置上顯示字符,但是在第一行第一個(gè)字符會(huì)循環(huán)顯示屏上所有的字符.

初始化程序如下:

void lcd_init(void)
{
LCD_DATA=0;

LCD_DATA=0x38;
delays(5);
LCD_DATA=0x38;
delays(5);
LCD_DATA=0x38;
delays(5);

read_busy();
LCD_DATA=0x38;
lcd_enable();

read_busy();
LCD_DATA=0x08;
lcd_enable();

read_busy();
LCD_DATA=0x01;
lcd_enable();

read_busy();
LCD_DATA=0x06;
lcd_enable();

read_busy();
LCD_DATA=0x0e;
lcd_enable();

}

不知道有沒(méi)有人遇到過(guò)同樣的情況呢,不知道你們是如何解決的呢.

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water1120211

LV.3

2007-08-07 11:49

#include

#define uchar unsigned char

#define LCD_DATA P2
sbit LCD_RS=P0^5;
sbit LCD_RW=P0^6;
sbit LCD_EN=P0^7;

void delays(uchar a)
{
uchar j;
while(--a!=0)
{
for(j=0;j<125;j++);
}
}

void read_busy(void)
{
LCD_DATA=0xff;
LCD_RS=0;
LCD_RW=1;
LCD_EN=0;
delays(1);
LCD_EN=1;

while(LCD_DATA&0x80);

}

void lcd_enable(void)
{
LCD_RS=0;
LCD_RW=0;
LCD_EN=0;
delays(1);
LCD_EN=1;

}

void lcd_init(void)
{
LCD_DATA=0;

LCD_DATA=0x38;
delays(5);
LCD_DATA=0x38;
delays(5);
LCD_DATA=0x38;
delays(5);

read_busy();
LCD_DATA=0x38;
lcd_enable();

read_busy();
LCD_DATA=0x08;
lcd_enable();

read_busy();
LCD_DATA=0x01;
lcd_enable();

read_busy();
LCD_DATA=0x06;
lcd_enable();

read_busy();
LCD_DATA=0x0f;
lcd_enable();

}

void dis_one_char(uchar y,uchar x,uchar char_data)
{
y&=0x01;
x&=0x0f;

if(y)
{
x|=0x40;
}

x|=0x80;
LCD_DATA=x;
lcd_enable();

read_busy();
LCD_DATA=char_data;
LCD_RS=1;
LCD_RW=0;
LCD_EN=0;
delays(1);
LCD_EN=1;

}

void main(void)
{
uchar i;
for(i=0;i<125;i++)
{
delays(5);
}

lcd_init();
delays(5);
while(1)
{

dis_one_char(0,3,'A');
dis_one_char(1,5,'B');
dis_one_char(0,8,'C');
dis_one_char(1,12,'D');

// while(1);

}

}

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