IIC协议——OLED屏幕

1万 · 2023-11-19 20:22



#include "intrins.h"

 

sbit sda=P0^3;

sbit scl=P0^1;

 

void i2c_start(void);   

void i2c_stop(void);

char ack(void);

void send_messege_i2c(char messege);

void w_cmd_i2c(char cmd);

void w_data_i2c(char data1);

void init_i2c(void);

void clear_oled(void);

 

code char tx[]={

0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,

0x01,0x03,0x03,0x03,0x07,0x07,0x05,0x07,0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x01,

0x05,0x0F,0x0F,0x0F,0x07,0x05,0x07,0x05,0x07,0x07,0x07,0x0F,0x0F,0x0F,0x0F,0x0F,

0x0F,0x4F,0x0F,0x0F,0x0F,0x0F,0x0F,0x1F,0x1F,0x1F,0x0F,0x0F,0x1F,0x1F,0x1F,0x1F,

0x1F,0x3F,0x1F,0x1F,0x7F,0x1F,0x1F,0x9F,0x9F,0x3F,0x7F,0x6F,0x6F,0x5F,0x9F,0xBF,

0xBF,0xBF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x03,0x1F,0x1F,0x1F,0x3F,0x3F,0x1F,

0xCF,0xEF,0xF7,0xD7,0xDF,0xFB,0xFF,0x9F,0x9E,0x9F,0x8F,0x8F,0x9F,0x9F,0x9F,0xBF,

0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0xF0,0xF0,0xF0,0xF0,0xF8,0xF8,0xF8,0xF8,0xFC,0xFC,

0xFC,0xFC,0xFC,0xFC,0xFC,0xFC,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFC,0xE0,0xC0,0x80,

0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x01,0x0C,0x44,0x60,0xF5,0xE0,0xC0,0xC0,0xC0,0xC0,0xC0,0xD8,0xFE,0xE7,0xE5,

0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xC0,0xC0,0x80,0x80,0x00,0x08,0x08,

0xC8,0x98,0x98,0x88,0x80,0x80,0xC0,0x81,0x81,0xC7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xDF,0x87,0x87,0xC3,0xC3,0xA3,0x91,0x91,0x11,0x11,0x19,0x99,0x89,0x09,0x09,

0x01,0x83,0xC3,0xC2,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x03,0x37,0x3D,0xBF,0xBF,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0x00,0x00,0x20,0x40,0x40,0x40,0x40,0x06,0x06,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x1E,0x3E,0x7C,0x70,0xE0,0xC3,0x1F,0x3F,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,

0x7F,0x7F,0x7F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0xFF,0xFF,0x1F,0x00,0x00,0x40,0x70,0x3C,0x1C,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0xC0,0xA0,0xC0,0xC0,0x00,0xC5,0xFF,0xFF,0xFF,0xFF,0xFD,0xFD,0xFF,0xFF,0xFF,

0xFF,0xFF,0x00,0x00,0x00,0x80,0x00,0x80,0x00,0x00,0xC0,0xC0,0x00,0xC0,0xC0,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x0F,0x3F,0x7F,0xFF,0xFF,

0xFF,0xFF,0xFF,0xFF,0xDF,0x9F,0x9F,0x1F,0x1F,0x1E,0x9E,0xDE,0xDE,0xDE,0xDE,0xDE,

0xDE,0x1E,0x1C,0x1C,0x1F,0x1F,0x9F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x3F,0x1F,

0x1F,0x07,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,

0x40,0x40,0x00,0x00,0x00,0x00,0x30,0x08,0x08,0x03,0x80,0x80,0x80,0xF8,0xF8,0xFE,

0xEF,0xC7,0xE7,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFD,0xFD,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0x00,0x00,0xE0,0xEF,0xE0,0xEF,0xE0,0x80,0x0F,0x6F,0x60,0xCF,0xAF,0xBF,

0x23,0x84,0xC0,0xA0,0xE0,0xE0,0xE0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,

0x02,0x04,0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x01,0x07,0x0F,0x1F,0x3F,0x3F,0x7F,0x7C,0x7C,0xF8,0xF9,0xFB,0xFB,0xFB,0xFB,0xF9,

0xF9,0x78,0x78,0x7C,0x3E,0x3F,0x1F,0x1F,0x0F,0x07,0x03,0x01,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC1,0xE1,0xFF,0xFF,0xFE,0xFE,

0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0x00,0x00,0x9F,0xBF,0xDF,0xFF,0xFF,0xEF,0xE0,0x98,0x98,0x9A,0x87,0xA7,

0xA7,0x8F,0x8F,0x9F,0x9F,0x9A,0x9E,0x9C,0xFF,0xFB,0xFA,0xFC,0xFC,0xFC,0xEC,0xE8,

0xF8,0xF0,0xB0,0xB0,0xA0,0xE0,0xC0,0xC0,0xC0,0x80,0x80,0x80,0x80,0x00,0x00,0x20,

0x00,0x00,0x00,0x40,0xC0,0xC0,0x44,0x04,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,

0x00,0x00,0x00,0x00,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xE0,0xE0,0xE0,0xE0,0xE0,

0xE0,0xD0,0xB0,0xF0,0xF8,0xF8,0xB8,0x9C,0xDC,0xDC,0x7E,0xFC,0xE4,0xEC,0xEC,0xF4,

0xF8,0xF8,0xFC,0xFC,0xF4,0xFE,0xFE,0xFE,0xFE,0xFF,0xFD,0xFF,0xFF,0xFF,0xFF,0xFF,

0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};    //这是page7的内容

 

void main(void)

{        

        unsigned char i;

        unsigned int j;

        /*--  文字:  我  --*/

/*--  宋体12;  此字体下对应的点阵为：宽x高=16x16   --*/

        

        

        init_i2c();

        clear_oled();   //清屏函数

        

        w_cmd_i2c(0x20);  //选择页寻址模式

        w_cmd_i2c(0x02);

        

        //w_cmd_i2c(0xB0);  //选择page  1011 0xxx

        //w_cmd_i2c(0x00);    //设置起始地址  低位

        //w_cmd_i2c(0x10);    //设置起始地址  高位

        //w_data_i2c(0x80);  //发送数据

 

        for(i=0;i<8;i++){

                

                w_cmd_i2c(0xB0+i);    //变换page  共有0-7 8个

                w_cmd_i2c(0x00);    //设置起始地址  低位

                w_cmd_i2c(0x10);    //设置起始地址  高位

                //i=3;

                for(j=128*i; j<(128*(i+1)); j++){   //变换的是tx中的数据

                        w_data_i2c(tx[j]);  //tx中的数据  

                }

        }

 

        while(1){}

}  

//下面是函数封装

 

 

void clear_oled(void)

{

        char i;  int j;

 

        for(i=0;i<8;i++){

                w_cmd_i2c(0xB0+i);    //变换page

                w_cmd_i2c(0x00);    //设置起始地址  低位

                w_cmd_i2c(0x10);    //设置起始地址  高位

                for(j=0;j<128;j++){

                        w_data_i2c(0x00);  //写0就行  

                }

        }

        

}

 

void init_i2c(void)

{

        w_cmd_i2c(0xAE);//--display off

        w_cmd_i2c(0x00);//---set low column address

        w_cmd_i2c(0x10);//---set high column address

        w_cmd_i2c(0x40);//--set start line address 

        w_cmd_i2c(0xB0);//--set page address

        w_cmd_i2c(0x81); // contract control

        w_cmd_i2c(0xFF);//--128 

        w_cmd_i2c(0xA1);//set segment remap

        w_cmd_i2c(0xA6);//--normal / reverse

        w_cmd_i2c(0xA8);//--set multiplex ratio(1 to 64)

        w_cmd_i2c(0x3F);//--1/32 duty

        w_cmd_i2c(0xC8);//Com scan direction

        w_cmd_i2c(0xD3);//-set display offset

        w_cmd_i2c(0x00);//

        w_cmd_i2c(0xD5);//set osc division

        w_cmd_i2c(0x80);//

        w_cmd_i2c(0xD8);//set area color mode off

        w_cmd_i2c(0x05);//

        w_cmd_i2c(0xD9);//Set Pre-Charge Period

        w_cmd_i2c(0xF1);//

        w_cmd_i2c(0xDA);//set com pin configuartion

        w_cmd_i2c(0x12);//

        w_cmd_i2c(0xDB);//set Vcomh

        w_cmd_i2c(0x30);//

        w_cmd_i2c(0x8D);//set charge pump enable

        w_cmd_i2c(0x14);//

        w_cmd_i2c(0xAF);//--turn on oled panel

}

 

void w_cmd_i2c(char cmd)

{

        i2c_start();

        send_messege_i2c(0x78);

        ack();

        send_messege_i2c(0x00);

        ack();

        send_messege_i2c(cmd);

        ack();

        i2c_stop();

}

 

void w_data_i2c(char data1)

{

        i2c_start();

        send_messege_i2c(0x78);

        ack();

        send_messege_i2c(0x40);

        ack();

        send_messege_i2c(data1);

        ack();

        i2c_stop();

}

 

void i2c_start(void)

{

        scl=1;

        sda=0;        

        sda=1;  //我的  

        /*

        scl=0;  //老师的

        sda=1;

        scl=1;*/

        

        _nop_();   //

        sda=0;

        _nop_();   //

        scl=0;

}

 

void i2c_stop(void)

{

        scl=0;

        sda=0;

        scl=1;

        _nop_();   //

        sda=1;

        _nop_();   //

        sda=0;  //老师不要这个

}

 

char ack(void)      //应答信号

{

        char flag;

        sda=1;

        //_nop_();  //老师要的

        scl=1;

        _nop_();

        flag=sda;

        //_nop_();  //老师要的

        scl=0;

        _nop_();

        return flag;

}

 

void send_messege_i2c(char messege)

{

        char i;

        

        for(i=0;i<8;i++){

                scl=0;

                _nop_();   //必要

                sda= messege & 0x80 ;        

                //_nop_();  //老师要的

                scl=1;

                _nop_();

                scl=0;

                messege=messege<<1;

        }

}

原文链接：https://blog.csdn.net/m0_67794575/article/details/130902543

只看该作者 · 2023-11-22 08:39

IIC速率还是慢了点

IIC协议——OLED屏幕

技术新星奖章

沉静之湖泊

突出贡献奖章

经常做客