LCD1602显示总结

仿真原理图如下：

1.LCD1602正常显示两行数据

/*------------------------
功能：LCD1602显示两行数据
Author: Zhang Kaizhou
Date: 2019-6-3 12:42:22
------------------------*/
#include 
#define uchar unsigned char
#define uint unsigned int
	
uchar code table0[] = {"0123456789ABCDEF"}; // 每行的字符数据
uchar code table1[] = {"0123456789abcdef"};
sbit lcdrs = P1^2; // LCD数据/命令选择端
sbit lcdrw = P1^3; // LCD读写选择端
sbit lcden = P1^4; // LCD使能端，高脉冲有效
uchar num;

void init();
void writeCommand(uchar command);
void delay(uchar xms);
void writeData(uchar dat);

void main()
{
	init();
	writeCommand(0x80); // 将数据指针定位到第一行的首地址
	for(num = 0; num < 16; num++)
	{
		writeData(table0[num]);
		delay(5);
	}
	
	writeCommand(0x80 + 0x40); // 将数据指针定位到第二行的首地址
	for(num = 0; num < 16; num++)
	{
		writeData(table1[num]);
		delay(5);
	}
	while(1);
}

/*初始化LCD1602的设置*/
void init()
{
	lcden = 0; // 拉低使能端，准备产生使能高脉冲信号
	writeCommand(0x38); // 显示模式设置(16x2， 5x7点阵，8位数据接口)
	writeCommand(0x0c); // 开显示，不显示光标
	writeCommand(0x06); // 写一个字符后地址指针自动加1
	writeCommand(0x01); // 显示清零，数据指针清零
}

/*写指令函数*/
void writeCommand(uchar command)
{
	lcdrs = 0; // 命令选择
	lcdrw = 0;
	P0 = command;
	delay(5);
	
	lcden = 1; // 产生一个正脉冲使能信号
	delay(5);
	lcden = 0;
}

/*写数据函数*/
void writeData(uchar dat)
{
	lcdrs = 1; // 数据选择
	lcdrw = 0;
	P0 = dat;
	delay(5);
	
	lcden = 1;
	delay(5);
	lcden = 0;
}

/*延时函数*/
void delay(uchar xms)
{
	uint i, j;
	for(i = xms; i > 0; i--)
		for(j = 110; j > 0; j--);
}

2.整屏左移显示

/*------------------------
功能：LCD1602整屏左移显示
Author: Zhang Kaizhou
Date: 2019-6-3 12:35:23
------------------------*/
#include 
#define uchar unsigned char
#define uint unsigned int
	
uchar code table0[] = {"0123456789ABCDEF"}; // 每行的字符数据
uchar code table1[] = {"0123456789abcdef"};
sbit lcdrs = P1^2; // LCD数据/命令选择端
sbit lcdrw = P1^3; // LCD读写选择端
sbit lcden = P1^4; // LCD使能端，高脉冲有效
uchar num;

void init();
void writeCommand(uchar command);
void delay(uchar xms);
void writeData(uchar dat);

void main()
{
	init();
	writeCommand(0x80 + 0x10); // 将数据指针定位到第一行的非显示存储区
	for(num = 0; num < 16; num++)
	{
		writeData(table0[num]);
		delay(5);
	}
	
	writeCommand(0x80 + 0x50); // 将数据指针定位到第二行的非显示存储区
	for(num = 0; num < 16; num++)
	{
		writeData(table1[num]);
		delay(5);
	}
	
	for(num = 0; num < 16; num++) // 循环整屏左移
	{
		writeCommand(0x1c); // 整屏左移
		delay(100);
	}
	while(1);
}

/*初始化LCD1602的设置*/
void init()
{
	lcden = 0; // 拉低使能端，准备产生使能高脉冲信号
	writeCommand(0x38); // 显示模式设置(16x2， 5x7点阵，8位数据接口)
	writeCommand(0x0c); // 开显示，不显示光标
	writeCommand(0x06); // 写一个字符后地址指针自动加1
	writeCommand(0x01); // 显示清零，数据指针清零
}

/*写指令函数*/
void writeCommand(uchar command)
{
	lcdrs = 0; // 命令选择
	lcdrw = 0;
	P0 = command;
	delay(5);
	
	lcden = 1; // 产生一个正脉冲使能信号
	delay(5);
	lcden = 0;
}

/*写数据函数*/
void writeData(uchar dat)
{
	lcdrs = 1; // 数据选择
	lcdrw = 0;
	P0 = dat;
	delay(5);
	
	lcden = 1;
	delay(5);
	lcden = 0;
}

/*延时函数*/
void delay(uchar xms)
{
	uint i, j;
	for(i = xms; i > 0; i--)
		for(j = 110; j > 0; j--);
}

3.刷屏显示多行字符

/*----------------------------
功能：LCD1602刷屏显示多行字符
Author: Zhang Kaizhou
Date: 2019-6-4 16:15:43
-----------------------------*/
#include 
#include 
#define uchar unsigned char
#define uint unsigned int
	
uchar code table0[] = {"0123456789ABCDEF"}; // 每行的字符数据
uchar code table1[] = {"0123456789abcdef"};
uchar code table2[] = {"Welcome to here!"};
uchar code table3[] = {"I'm ZKZ!"};
uchar code table4[] = {"Life is nice!"};
uchar code table5[] = {"Tomorrow is OK!"};

sbit lcdrs = P1^2; // LCD数据/命令选择端
sbit lcdrw = P1^3; // LCD读写选择端
sbit lcden = P1^4; // LCD使能端，高脉冲有效
uchar num;

void init();
void writeCommand(uchar command);
void delay(uint xms);
void writeData(uchar dat);

void main()
{
	init();
	/*第一屏*/
	writeCommand(0x80); // 将数据指针定位到第一行首
	for(num = 0; num < strlen(table0); num++)
	{
		writeData(table0[num]);
		delay(5);
	}
	writeCommand(0x80 + 0x40); // 将数据指针定位到第二行首
	for(num = 0; num < strlen(table1); num++)
	{
		writeData(table1[num]);
		delay(5);
	}
	delay(2000);
	writeCommand(0x01);
	
	/*第二屏*/
	writeCommand(0x80); // 将数据指针定位到第一行首
	for(num = 0; num < strlen(table2); num++)
	{
		writeData(table2[num]);
		delay(5);
	}
	writeCommand(0x80 + 0x40); // 将数据指针定位到第二行首
	for(num = 0; num < strlen(table3); num++)
	{
		writeData(table3[num]);
		delay(5);
	}
	delay(2000);
	writeCommand(0x01);
	
	/*第三屏*/
	writeCommand(0x80); // 将数据指针定位到第一行首
	for(num = 0; num < strlen(table4); num++)
	{
		writeData(table4[num]);
		delay(5);
	}
	writeCommand(0x80 + 0x40); // 将数据指针定位到第二行首
	for(num = 0; num < strlen(table5); num++)
	{
		writeData(table5[num]);
		delay(5);
	}
	
	while(1);
}

/*初始化LCD1602的设置*/
void init()
{
	lcden = 0; // 拉低使能端，准备产生使能高脉冲信号
	writeCommand(0x38); // 显示模式设置(16x2， 5x7点阵，8位数据接口)
	writeCommand(0x0c); // 开显示，不显示光标
	writeCommand(0x06); // 写一个字符后地址指针自动加1
	writeCommand(0x01); // 显示清零，数据指针清零
}

/*写指令函数*/
void writeCommand(uchar command)
{
	lcdrs = 0; // 命令选择
	lcdrw = 0;
	P0 = command;
	delay(5);
	
	lcden = 1; // 产生一个正脉冲使能信号
	delay(5);
	lcden = 0;
}

/*写数据函数*/
void writeData(uchar dat)
{
	lcdrs = 1; // 数据选择
	lcdrw = 0;
	P0 = dat;
	delay(5);
	
	lcden = 1;
	delay(5);
	lcden = 0;
}

/*延时函数*/
void delay(uint xms)
{
	uint i, j;
	for(i = xms; i > 0; i--)
		for(j = 110; j > 0; j--);
}

4.其他显示方式可通过改变写入指令来实现…