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#include <reg52.h> //此文件中定義了單片機(jī)的一些特殊功能寄存器
typedef unsigned int u16; //對數(shù)據(jù)類型進(jìn)行聲明定義
typedef unsigned char u8;
#ifndef uchar
#define uchar unsigned char
#endif
void LcdInit();
void lcdset(unsigned char x,unsigned char y);
void lcdshow(unsigned char x,unsigned char y);
void lcdshow1(unsigned char x,unsigned char y);
void lcdshow2(unsigned char x,unsigned char y);
sbit LCD1602_E=P2^7;
sbit LCD1602_RW=P2^5;
sbit LCD1602_RS=P2^6;
void speeds(); //顯示speed
void liquid(); //顯示liquid
void ml();
#define LCD1602_DATAPINS P0
void LcdWriteData(uchar dat);
u16 buf1[]={0,0,0,0};
u16 buf2[]={0,0,0,0};
u8 sp[]="speed";
void main(void)
{
LcdInit();
while(1)
{
u8 i;
for(i=0;i<16;i++)
{
LcdWriteData(sp);
} //顯示speed
}
}
//***********************************************************
void Lcd1602_Delay1ms(unsigned int c) //誤差 0us
{
uchar a,b;
for (; c>0; c--)
{
for (b=199;b>0;b--)
{
for(a=1;a>0;a--);
}
}
}
void LcdWriteCom(uchar com) //寫入命令
{
LCD1602_E = 0; //使能
LCD1602_RS = 0; //選擇發(fā)送命令
LCD1602_RW = 0; //選擇寫入
LCD1602_DATAPINS = com; //放入命令
Lcd1602_Delay1ms(1);
} //等待數(shù)據(jù)穩(wěn)定
void LcdWriteData(uchar dat) //寫入數(shù)據(jù)
{
LCD1602_E = 0; //使能清零
LCD1602_RS = 1; //選擇輸入數(shù)據(jù)
LCD1602_RW = 0; //選擇寫入
LCD1602_DATAPINS = dat; //寫入數(shù)據(jù)
Lcd1602_Delay1ms(1);
LCD1602_E = 1; //寫入時(shí)序
Lcd1602_Delay1ms(5); //保持時(shí)間
LCD1602_E = 0;
}
void LcdInit() //LCD初始化子程序
{
LcdWriteCom(0x38); //開顯示
LcdWriteCom(0x0c); //開顯示不顯示光標(biāo)
LcdWriteCom(0x06); //寫一個(gè)指針加1
LcdWriteCom(0x80); //設(shè)置數(shù)據(jù)指針起點(diǎn)
}
//***************************************************************************
請大神指點(diǎn)，謝謝啦。
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