一个IIC的1.4寸小裸屏,目前没有字库和显示函数,只完成了一个线的显示,有懂的提个思路。清屏也是不完美的。
制作出来的实物图如下:
单片机源程序如下:
- #include "STC12C5A60S2.H"
- #define uchar unsigned char
- #define uint unsigned int
- uchar code LCD_DATA[1717] = { //全屏图片
- 0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,0X00,
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- 0X00,0X00,0X00,0X00,0X00,
- };
- uchar code LCD_INT[74] = //LCD的初始化指令,具体含义写在后面
- {
- 0X78,0X80, //选择地址,0X3C,加上W/R为0X78
- 0X01,0X80, //进0页
- 0X09,0X80, //选1页PS:选页指令在0页。
- 0X06,0X80, //选择正常显示模式
- 0X12,0X80, //选择偏置模式
- 0X40,0X80, //选择前8行的显示模式??
- 0X01,0X80, //回0页
- 0X16,0X80, //选择垂直模式,掉电模式
- 0x20,0x80, //选择Y地址,默认为0,可不设置。
- 0X40,0X80, //选择X地址,默认为0,可不设置.
- 0X0C,0X80, //翻到4页
- 0X05,0X80, //打开显示和直接驱动模式(电压倍增器)
- 0X01,0X80, //回0页
- 0X0A,0X80, //选2页
- 0X08,0X80, //设定2倍VLCD电压
- 0X12,0X80, //设定温度系数2
- 0X04,0X80, //设定VLCD为低,并关闭高压发生器
- 0XC8,0X80, //设定VLCD电压 ~=7.74V //4.5+72*0.045
- 0X01,0X80, //回0页
- 0X0B,0X80, //翻到3页
- 0X40,0X80, //选择灰度0(寄存器)
- 0X80,0X80, //灰度0设为0
- 0X41,0X80, //选额灰度1
- 0X94,0X80, //灰度1设为20
- 0X42,0X80, //选择灰度2
- 0XA8,0X80, //灰度2设为40
- 0X43,0X80, //选择灰度3
- 0XBF,0X80, //灰度3设为63
- 0X01,0X80, //回0页
- 0X0A,0X80, //选择2页
- 0X05,0X80, //设定VLCD为低,并打开高压发生器
- 0X01,0X80, //回0页
- 0X12,0X80, //打开操作模式,设定垂直模式 ,交换MSB和LSB 0X12:不交换MSB和LSB
- 0X0A,0X80, //翻到2页
- 0X09,0X80, //设定VLCD为3X
- 0X0A,0X80, //设定VLCD为4X
- 0X0B,0X40, //设定VLCD为5x,X040:后面开始写DDRAM显示数据
- };
-
- //delay ----------------------------------------------------------------------
- void delayus()
- {
- uchar i=6;
- while(i--);
- }
- void delayms(int a)
- {
- uchar i, j;
- i = 32;
- j = 40;
- while (j--)
- { while (i--);
- }
- }
- //I2C init ----------------------------------------------------------------------
- sbit I2CRST = P1^0; //定义I2C引脚
- sbit SDA = P1^1;
- sbit SCL =P1^2;
- void I2C_SOFT_START() //软件模拟I2C 开始信号
- {
- SDA = 1;
- delayus();
- SCL = 1;
- delayus();
- SDA = 0;
- delayus();
- SCL = 0;
- SDA = 1;
- }
- void I2C_SOFT_STOP() //软件模拟I2C 停止信号
- {
- SDA = 0;
- delayus();
- SCL = 1;
- delayus();
- SDA = 1;
- delayus();
- SCL = 0;
- SDA = 1;
- }
- void I2C_SOFT_SEND(uchar S_SND) //软件模拟I2C,写1字节数据
- {
- uchar i,SOFT_ACK,SND;
- SOFT_ACK = 1;
- while (SOFT_ACK)
- {
- SND = S_SND;
- for (i=8;i!=0;i--)
- {
- if(SND & 0X80)
- SDA = 1;
- else SDA = 0;
- SND <<=1;
- delayus();
- // delayus();
- SCL = 1;
- delayus();
- // delayus();
- SCL=0;
- delayus();
- }
- SDA =1;
- delayus();
- SCL = 1;
- if(~SDA)
- {
- delayus(); //貌似少了这个延时,有时候不能顺利初始化
- SOFT_ACK = 0; //判断是否重发
- }SCL=0;
- }
- }
- //LCD INT ------------------------------------------------------
- void LCD_INIT()
- {
- uint num;
- I2CRST = 0; //RST腿拉低
- delayms();
- I2CRST = 1;
- delayms();
- delayms();
- delayms();
- delayms();
- I2C_SOFT_START(); //发送开始信号
- for(num=0;num<=74;num++)
- {
- I2C_SOFT_SEND(LCD_INT[num]);
- }
- }
- void LCD_SET_XY(uchar x,y) //设定在X,Y位置写数据
- {
- uchar i;
- I2C_SOFT_STOP(); //芯片没有返回指令列表的指令,SO,结束I2C,再打开。
- delayus();
- I2C_SOFT_START();
- I2C_SOFT_SEND(0X78); //选地址
- I2C_SOFT_SEND(0X80); //这个蛋疼的芯片,每次写一条指令都要说明下一条是指令还是数据,所以这么多0X80。
- I2C_SOFT_SEND(0X01); //选页指令
- I2C_SOFT_SEND(0X80);
- I2C_SOFT_SEND(0X040|y); //设置Y地址,(0-16)
- I2C_SOFT_SEND(0X80);
- I2C_SOFT_SEND(0X80|x); //设置X地址, (0-100)
- I2C_SOFT_SEND(0X40); //0x40表示后面开始写数据
- }
- void map() //显示一幅面
- {
- uint num;
- for(num=0;num<=1717;num++)
- {
- I2C_SOFT_SEND(LCD_DATA[num]);
- }
- }
- void LSC(uchar X,uchar Y) //清屏
- {
- int n;
- LCD_SET_XY(X,Y); //列、行
- for(n=1717;n>0;n--) //1634个点
- {
- I2C_SOFT_SEND(0X00);
- }
- }
- void NLSC() //反清屏
- {
- int n;
- for(n=1717;n>0;n--) //1634个点
- {
- I2C_SOFT_SEND(0XFF);
- }
- }
- void HX(uchar X,uchar Y) //划一条线
- {
- uchar n;
- LCD_SET_XY(X,Y); //列、行
- for(n=16;n>0;n--) //16个点
- {
- I2C_SOFT_SEND(0XFF);
- }
- }
- void HK(int n,y) //划一条粗线
- {
- for(n;n>0;n--) //16个点
- {
- HX(y+n,0);//列、行 划一条线
- }
- }
- void main()
- {
- LCD_INIT(); //LCD初始化
- LSC();//清屏
- //NLSC();//反清屏
- //map();//显示一幅面
- while(1)
- {
- HK(30,65);//列宽、列位置 划一条粗线
- HX(2,0);//列宽、列位置 划一条线
-
-
- }
- }
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