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第一个c程序

#include

#include"lcd.h"

//--定义全局变量--//

unsigned char PuZh[]=" hello ";

void main(void)

{

unsigned char i;

LcdInit();

for(i=0;i<16;i++)

{

LcdWriteData(PuZh[i]);

}

while(1)

{

}

}

第二个c程序

#include"lcd.h"

void Lcd1602_Delay1ms(uint c) //误差 0us

{

uchar a,b;

for (; c>0; c--)

{

for (b=199;b>0;b--)

{

for(a=1;a>0;a--);

}

}

}

#ifndef LCD1602_4PINS //当没有定义这个LCD1602_4PINS时

void LcdWriteCom(uchar com) //写入命令

{

LCD1602_E = 0; //使能

LCD1602_RS = 0; //选择发送命令

LCD1602_RW = 0; //选择写入

LCD1602_DATAPINS = com; //放入命令

Lcd1602_Delay1ms(1); //等待数据稳定

LCD1602_E = 1; //写入时序

Lcd1602_Delay1ms(5); //保持时间

LCD1602_E = 0;

}

#else

void LcdWriteCom(uchar com) //写入命令

{

LCD1602_E = 0; //使能清零

LCD1602_RS = 0; //选择写入命令

LCD1602_RW = 0; //选择写入

LCD1602_DATAPINS = com; //由于4位的接线是接到P0口的高四位，所以传送高四位不用改

Lcd1602_Delay1ms(1);

LCD1602_E = 1; //写入时序

Lcd1602_Delay1ms(5);

LCD1602_E = 0;

// Lcd1602_Delay1ms(1);

LCD1602_DATAPINS = com << 4; //发送低四位

Lcd1602_Delay1ms(1);

LCD1602_E = 1; //写入时序

Lcd1602_Delay1ms(5);

LCD1602_E = 0;

}

#endif

#ifndef LCD1602_4PINS

void LcdWriteData(uchar dat) //写入数据

{

LCD1602_E = 0; //使能清零

LCD1602_RS = 1; //选择输入数据

LCD1602_RW = 0; //选择写入

LCD1602_DATAPINS = dat; //写入数据

Lcd1602_Delay1ms(1);

LCD1602_E = 1; //写入时序

Lcd1602_Delay1ms(5); //保持时间

LCD1602_E = 0;

}

#else

void LcdWriteData(uchar dat) //写入数据

{

LCD1602_E = 0; //使能清零

LCD1602_RS = 1; //选择写入数据

LCD1602_RW = 0; //选择写入

LCD1602_DATAPINS = dat; //由于4位的接线是接到P0口的高四位，所以传送高四位不用改

Lcd1602_Delay1ms(1);

LCD1602_E = 1; //写入时序

Lcd1602_Delay1ms(5);

LCD1602_E = 0;

LCD1602_DATAPINS = dat << 4; //写入低四位

Lcd1602_Delay1ms(1);

LCD1602_E = 1; //写入时序

Lcd1602_Delay1ms(5);

LCD1602_E = 0;

}

#endif

#ifndef LCD1602_4PINS

void LcdInit() //LCD初始化子程序

{

LcdWriteCom(0x38); //开显示

LcdWriteCom(0x0c); //开显示不显示光标

LcdWriteCom(0x06); //写一个指针加1

LcdWriteCom(0x01); //清屏

LcdWriteCom(0x80); //设置数据指针起点

}

#else

void LcdInit() //LCD初始化子程序

{

LcdWriteCom(0x32); //将8位总线转为4位总线

LcdWriteCom(0x28); //在四位线下的初始化

LcdWriteCom(0x0c); //开显示不显示光标

LcdWriteCom(0x06); //写一个指针加1

LcdWriteCom(0x01); //清屏

LcdWriteCom(0x80); //设置数据指针起点

}

#endif