完整的NOKIA-5110液晶51单片机驱动程序

Nokia 5110驱动

*说明：本驱动适用于51单片机（5V或3.3V）,液晶的VCC接5V 或3.3V

修改偏置电压可改变5110点阵显示的亮度

5110接5V时偏置电压改为（0xa7,0）,接3.3V时改为（0xc0,0）*作者：JK

*创建日期：2013/1/26

*修改日期：

#include

#include "font.h"

#define uint unsigned int

#define uchar unsigned char

IO口定义区

sbit LCD_RST = P0^0;

sbit LCD_CE = P0^1;

sbit LCD_DC = P0^2;

sbit LCD_DIN = P0^3;

sbit LCD_CLK = P0^4;

函数声明区

void LCD_Init(void);

void LCD_WriteByte(unsigned char dat, unsigned char command);

void LCD_Set_XY(unsigned char X, unsigned char Y);

void LCD_Clear(void);

void LCD_WriteChar(unsigned char x,unsigned char y,unsigned char c); void LCD_WriteString(unsigned char X,unsigned char Y,char *s);

void LCD_WriteNum(unsigned char X,unsigned char Y,unsigned int num);

void LCD_Write_12X16Font(unsigned char x,unsigned char y,unsigned char c[2]);

void LCD_DrawPicture(unsigned char X,unsigned char Y,unsigned char const *map,

unsigned char Pix_x,unsigned char Pix_y);

*函数名：LCD_Init

*功能：初始化LCD

*参数：无

*返回值：无

*备注：

void LCD_Init(void)

{

unsigned char i;

LCD_RST=0; //复位

for(i=0;i<150;i++);

LCD_RST=1;

LCD_WriteByte(0x21, 0); // 使用扩展命令设置LCD模式

LCD_WriteByte(0xc0, 0); // 设置偏置电压,修改可改变5110点阵显示的亮度

/*5110接5V时偏置电压改为（0xa7,0）,接3.3V时改为（0xc0,0）*/

LCD_WriteByte(0x20, 0); // 使用基本命令。并设置V=0，水平寻址LCD_Clear(); // 清屏

LCD_WriteByte(0x0c, 0); // 设定显示模式，正常显示(普通显示) LCD_CE=0;

}

*函数名：LCD_WriteByte

*功能：模拟SPI接口时序写数据/命令LCD

*参数：data ：写入的数据；

command ：写数据（1）/命令选择（0）；

*返回值：无

*备注：

void LCD_WriteByte(unsigned char dat, unsigned char command) {

unsigned char i;

LCD_CE=0; //5110片选有效，允许输入数据if (command == 0) //写命令

LCD_DC=0;

else

LCD_DC=1; //写数据

for(i=0;i<8;i++) //传送8bit数据

{

if(dat&0x80)

LCD_DIN=1;

else

LCD_DIN=0;

LCD_CLK=0;

dat = dat << 1;

LCD_CLK=1;

}

LCD_CE=1; //禁止5110

}

*函数名：LCD_Set_XY

*功能：设置LCD坐标

*参数：X:0-83 Y:0-5

*返回值：无

*备注：

void LCD_Set_XY(unsigned char X, unsigned char Y) {

LCD_WriteByte(0x40 | Y, 0);// column 列

LCD_WriteByte(0x80 | X, 0);// row 行

}

*函数名：LCD_Clear

*功能：LCD清屏函数

*参数：无

*返回值：无

*备注：

void LCD_Clear(void)

{

unsigned char t;

unsigned char k;

LCD_Set_XY(0, 0);//设置RAM起始地址

for(t=0;t<6;t++)

{

for(k=0;k<84;k++)

{

LCD_WriteByte(0x00,1);

}

}

}

*函数名：LCD_WriteChar

*功能：LCD写一个6X8的字符

*参数：c

*返回值：无

备注：

void LCD_WriteChar(unsigned char x,unsigned char y,unsigned char c) {

unsigned char i;

c -= 32; //数组的行号

LCD_Set_XY(x,y);

for(i=0; i<12; i++)

{

LCD_WriteByte(font6x12[c][i], 1);

if(i==5)

{

y++;

LCD_Set_XY(x,y);

}

}

}

*函数名：LCD_WriteString

*功能：LCD写6X8的字符串

*参数：X , Y , S

*返回值：无

备注：

void LCD_WriteString(unsigned char X,unsigned char Y,char *s) {

while(*s)

{

LCD_WriteChar(X,Y,*s);

s++;

X += 6;

}

}

*函数名：LCD_WriteNum(unsigned int num)

*功能：写入数字

*参数：num

*返回值：无

void LCD_WriteNum(unsigned char X,unsigned char Y,unsigned int num)

{

unsigned char str[8],i=0,len=0;

unsigned int temp;

temp = num;

while(temp)

{

temp /=10;

len++;

}

if(!num)

{

len++;

str[0]=0x30;

}

str[len] = 0;

while(num)

{

str[len-i-1] = num%10 + 0x30;

num /=10;

i++;

}

LCD_WriteString(X,Y,(char *)str);

}

*函数名：LCD_Write_16X16Font

*功能：写一个16X16的汉字

*参数：x , y , c[2] x:0-83 y:0-5

*返回值：无

*备注：

void LCD_Write_12X16Font(unsigned char x,unsigned char y,unsigned char c[2])

{

unsigned char i,k;

LCD_Set_XY(x,y);

for(k=0; k<25; k++) //K的值表示汉字库最多存放的字的数量（可改大）

{

if((font12x16[k].Index[0]==c[0])&&(font12x16[k].Index[1]==c[1])) {

for(i=0; i<24; i++)

{

LCD_WriteByte(font12x16[k].Msk[i], 1);

if(i==11)

{

y++;

LCD_Set_XY(x,y);

}

}

}

}

}

*函数名：LCD_DrawPicture

*功能：绘图

*参数：X、Y ：位图绘制的起始X、Y坐标；

*map ：位图点阵数据；

Pix_x ：位图像素（长）<=84