IIC协议

IIC协议概述

IIC全称Inter-Integrated Circuit (集成电路总线) 是由PHILIPS公司在80年代开发的两线式串行总线，用于连接微控制器及其外围设备。IIC属于半双 工同步通信方式

特点

  • 简单性和有效性。

由于接口直接在组件之上，因此IIC总线占用的空间非常小，减少了电路板的空间和芯片管脚的数量，降低了互联成本。总线的长度可高达25英尺，并且能够以10Kbps的最大传输速率支持40个组件

构成

IIC串行总线一般有两根信号线，一根是双向的数据线SDA，另一根是时钟线SCL，其时钟信号是由主控器件产生。所有接到IIC总线设备上的串行数据SDA都接到总线的SDA上，各设备的时钟线SCL接到总线的SCL上。对于并联在一条总线上的每个IC都有唯一的地址。

image-20220815150649916

IIC协议

IIC总线在传输数据的过程中一共有三种类型信号，分别为：开始信号、结束信号和应答信号。

//起始位，停止位，数据位，速度

这些信号中，起始信号是必需的，结束信号和应答信号

  • 起始信号

  • 终止信号

image-20220815150749694
  • 应答信号

发送器每发送一个字节（8个bit），就在时钟脉冲9期间释放数据线，由接收器反馈一个应答信号。应答信号为低电平时，规定为有效应答位（ACK，简称应答位），表示接收器已经成功地接收了该字节； 应答信号为高电平时，规定为非应答位（NACK），一般表示接收器接收该字节没有成功。

image-20220815150823317
  • 数据发送的时序
image-20220815150840172

OLED写命令

image-20220815155717480

写命令/数据的思路

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/*1. start() 
2. 写入 b0111 1000 0x78 
3. ACK 
4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据 
5. ACK 
6. 写入指令/数据 
7. ACK
8. STOP */


void Oled_Write_Cmd(char dataCmd)//写命令函数
{
    //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x00);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataCmd);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Write_Data(char dataData){ //写数据函数
        //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x40);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataData);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}

具体的 每个参数的意义 看卖家给的文档

OLED 显示一个点

如何显示一个点？

有三种，分别位页地址模式，水平地址模式和垂直地址模式，可以通过一下表格进行配置

内存管理

image-20220815163312778

页寻址模式：

  1. 发送cmd：0x20
  2. 发送cmd: 0x02 ; 默认是页寻址模式

页地址模式

image-20220815163623674

水平地址模式

image-20220815163702760

垂直地址模式

image-20220815163717911
64 0列 1列 2列 3列 ··························· 124列 125列 126列 127列
Page0 bit0 0行
bit1 1行
bit2 2行
bit3 3行
bit4 4行
bit5 5行
bit6 6行
bit7 7行
Page1 8到15行
Page2 16到23行
Page3 …
Page4 …
Page5 …
Page6 56行到63行

显示一个点代码

这里我遇到的坑： 初始化会花屏 我在初始化完成后 加了一个清屏函数 就解决了

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#include<REG52.H>
#include<INTRINS.H>
sbit scl = P0^0;
sbit sda = P0^1;
void Oled_Clear();
void IIC_start()
{
    scl = 0; 
    sda = 1;
    scl = 1;
    _nop_();
    sda = 0; 
    _nop_();

}  

void IIC_Stop()
{
    scl = 0;
    sda = 0; 
    scl = 1;
    _nop_(); 
    sda = 1; 
    _nop_(); 
}
char IIC_ACK()
{
    char flag; 
    sda = 1 ; //在时钟脉冲9期间释放数据线
    _nop_(); 
    scl = 1 ;
    _nop_(); 
    flag = sda ;
    _nop_(); 
    scl = 0 ; 
    _nop_(); 

    return flag;
}
void IIC_Send_Byte(char dataSend)
{
    int i ; 
    for (i = 0 ; i< 8;i++){ //发生八次
        scl = 0 ; //scl拉低, 让sda做好数据准备
        sda = dataSend & 0x80; //1000 0000 获得dataSend最高位 
        _nop_(); // 发送数据建立时间
        scl = 1 ; //scl 拉高开始发生
        _nop_(); //数据发送时间
        scl = 0 ; //发生完毕拉低
        _nop_(); //数据发送时间
        dataSend = dataSend << 1 ; //发送一次 移1位
    }

}
void Oled_Write_Cmd(char dataCmd)//写命令函数
{
    //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x00);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataCmd);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Write_Data(char dataData){ //写数据函数
        //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x40);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataData);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Init(void)
{
    Oled_Write_Cmd(0xAE); //--display off
    Oled_Write_Cmd(0x00); //---set low column address
    Oled_Write_Cmd(0x10); //---set high column address
    Oled_Write_Cmd(0x40); //--set start line address
    Oled_Write_Cmd(0xB0); //--set page address
    Oled_Write_Cmd(0x81); // contract control
    Oled_Write_Cmd(0xFF); //--128
    Oled_Write_Cmd(0xA1); // set segment remap
    Oled_Write_Cmd(0xA6); //--normal / reverse
    Oled_Write_Cmd(0xA8); //--set multiplex ratio(1 to 64)
    Oled_Write_Cmd(0x3F); //--1/32 duty
    Oled_Write_Cmd(0xC8); // Com scan direction
    Oled_Write_Cmd(0xD3); //-set display offset
    Oled_Write_Cmd(0x00); //
    Oled_Write_Cmd(0xD5); // set osc division
    Oled_Write_Cmd(0x80); //
    Oled_Write_Cmd(0xD8); // set area color mode off
    Oled_Write_Cmd(0x05); //
    Oled_Write_Cmd(0xD9); // Set Pre-Charge Period
    Oled_Write_Cmd(0xF1); //
    Oled_Write_Cmd(0xDA); // set com pin configuartion
    Oled_Write_Cmd(0x12); //
    Oled_Write_Cmd(0xDB); // set Vcomh
    Oled_Write_Cmd(0x30); //
    Oled_Write_Cmd(0x8D); // set charge pump enable
    Oled_Write_Cmd(0x14); //
    Oled_Write_Cmd(0xAF); //--turn on oled panel
    Oled_Clear();
}

void Oled_Clear()
{
    unsigned char i, j; //-128 --- 127
    for (i = 0; i < 8; i++)
    {
        Oled_Write_Cmd(0xB0 + i); // page0--page7 //每个page从0列
        Oled_Write_Cmd(0x00);
        Oled_Write_Cmd(0x10); // 0到127列，依次写入0，每写入数据，列地址自动偏移
        for (j = 0; j < 128; j++)
        {
            Oled_Write_Data(0);
        }
    }
}
void main()
{
    //oled 初始化
     Oled_Init(); 
    // 选择一个位置
    // 选择页寻址模式
    Oled_Write_Cmd(0x20);
     Oled_Write_Cmd(0x02);
    // 选择一个0 1011 0000 == 0xB0
    Oled_Write_Cmd(0xB0);
    Oled_Write_Data(0x08);
    while(1);
    
}

显示一个字母A

通过取显示字母的 数组

image-20220815220605099

字模取出来是2*16的 需要拆解一下 因为OLED的一个page只能放8位

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char A[2][8] ={{0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00},{0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20}} ;

我用的 是二维数组

完整代码

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#include<REG52.H>
#include<INTRINS.H>
sbit scl = P0^0;
sbit sda = P0^1;
void Oled_Clear();
void IIC_start()
{
    scl = 0; 
    sda = 1;
    scl = 1;
    _nop_();
    sda = 0; 
    _nop_();

}  

void IIC_Stop()
{
    scl = 0;
    sda = 0; 
    scl = 1;
    _nop_(); 
    sda = 1; 
    _nop_(); 
}
char IIC_ACK()
{
    char flag; 
    sda = 1 ; //在时钟脉冲9期间释放数据线
    _nop_(); 
    scl = 1 ;
    _nop_(); 
    flag = sda ;
    _nop_(); 
    scl = 0 ; 
    _nop_(); 

    return flag;
}
void IIC_Send_Byte(char dataSend)
{
    int i ; 
    for (i = 0 ; i< 8;i++){ //发生八次
        scl = 0 ; //scl拉低, 让sda做好数据准备
        sda = dataSend & 0x80; //1000 0000 获得dataSend最高位 
        _nop_(); // 发送数据建立时间
        scl = 1 ; //scl 拉高开始发生
        _nop_(); //数据发送时间
        scl = 0 ; //发生完毕拉低
        _nop_(); //数据发送时间
        dataSend = dataSend << 1 ; //发送一次 移1位
    }

}
void Oled_Write_Cmd(char dataCmd)//写命令函数
{
    //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x00);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataCmd);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Write_Data(char dataData){ //写数据函数
        //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x40);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataData);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Init(void)
{
    Oled_Write_Cmd(0xAE); //--display off
    Oled_Write_Cmd(0x00); //---set low column address
    Oled_Write_Cmd(0x10); //---set high column address
    Oled_Write_Cmd(0x40); //--set start line address
    Oled_Write_Cmd(0xB0); //--set page address
    Oled_Write_Cmd(0x81); // contract control
    Oled_Write_Cmd(0xFF); //--128
    Oled_Write_Cmd(0xA1); // set segment remap
    Oled_Write_Cmd(0xA6); //--normal / reverse
    Oled_Write_Cmd(0xA8); //--set multiplex ratio(1 to 64)
    Oled_Write_Cmd(0x3F); //--1/32 duty
    Oled_Write_Cmd(0xC8); // Com scan direction
    Oled_Write_Cmd(0xD3); //-set display offset
    Oled_Write_Cmd(0x00); //
    Oled_Write_Cmd(0xD5); // set osc division
    Oled_Write_Cmd(0x80); //
    Oled_Write_Cmd(0xD8); // set area color mode off
    Oled_Write_Cmd(0x05); //
    Oled_Write_Cmd(0xD9); // Set Pre-Charge Period
    Oled_Write_Cmd(0xF1); //
    Oled_Write_Cmd(0xDA); // set com pin configuartion
    Oled_Write_Cmd(0x12); //
    Oled_Write_Cmd(0xDB); // set Vcomh
    Oled_Write_Cmd(0x30); //
    Oled_Write_Cmd(0x8D); // set charge pump enable
    Oled_Write_Cmd(0x14); //
    Oled_Write_Cmd(0xAF); //--turn on oled panel
    Oled_Clear();
}

void Oled_Clear()
{
    unsigned char i, j; //-128 --- 127
    for (i = 0; i < 8; i++)
    {
        Oled_Write_Cmd(0xB0 + i); // page0--page7 //每个page从0列
        Oled_Write_Cmd(0x00);
        Oled_Write_Cmd(0x10); // 0到127列，依次写入0，每写入数据，列地址自动偏移
        for (j = 0; j < 128; j++)
        {
            Oled_Write_Data(0);
        }
    }
}
/*--  文字:  A  --*/
/*--  宋体12;  此字体下对应的点阵为：宽x高=8x16   --*/
char A[2][8] ={{0x00,0x00,0xC0,0x38,0xE0,0x00,0x00,0x00},{0x20,0x3C,0x23,0x02,0x02,0x27,0x38,0x20}} ;
void main()
{
   int i,j; 
    //oled 初始化
     Oled_Init();
     
    // 选择一个位置
    // 选择页寻址模式
    Oled_Write_Cmd(0x20);
     Oled_Write_Cmd(0x02);
    // 选择一个page0 1011 0000 == 0xB0
    for ( i =0;i<2;i++){
        Oled_Write_Cmd(0xB0+i);
        Oled_Write_Cmd(0x00);
        Oled_Write_Cmd(0x10);
        for (j = 0; j< 8; j++)
        {
            Oled_Write_Data(A[i][j]);
        }
    }
    while(1);
    
}
c5258ae852af29ac815cec9acc2a3ff

显示中文

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#include<REG52.H>
#include<INTRINS.H>
sbit scl = P0^0;
sbit sda = P0^1;
void Oled_Clear();
void IIC_start()
{
    scl = 0; 
    sda = 1;
    scl = 1;
    _nop_();
    sda = 0; 
    _nop_();

}  

void IIC_Stop()
{
    scl = 0;
    sda = 0; 
    scl = 1;
    _nop_(); 
    sda = 1; 
    _nop_(); 
}
char IIC_ACK()
{
    char flag; 
    sda = 1 ; //在时钟脉冲9期间释放数据线
    _nop_(); 
    scl = 1 ;
    _nop_(); 
    flag = sda ;
    _nop_(); 
    scl = 0 ; 
    _nop_(); 

    return flag;
}
void IIC_Send_Byte(char dataSend)
{
    int i ; 
    for (i = 0 ; i< 8;i++){ //发生八次
        scl = 0 ; //scl拉低, 让sda做好数据准备
        sda = dataSend & 0x80; //1000 0000 获得dataSend最高位 
        _nop_(); // 发送数据建立时间
        scl = 1 ; //scl 拉高开始发生
        _nop_(); //数据发送时间
        scl = 0 ; //发生完毕拉低
        _nop_(); //数据发送时间
        dataSend = dataSend << 1 ; //发送一次 移1位
    }

}
void Oled_Write_Cmd(char dataCmd)//写命令函数
{
    //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x00);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataCmd);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Write_Data(char dataData){ //写数据函数
        //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x40);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataData);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Init(void)
{
    Oled_Write_Cmd(0xAE); //--display off
    Oled_Write_Cmd(0x00); //---set low column address
    Oled_Write_Cmd(0x10); //---set high column address
    Oled_Write_Cmd(0x40); //--set start line address
    Oled_Write_Cmd(0xB0); //--set page address
    Oled_Write_Cmd(0x81); // contract control
    Oled_Write_Cmd(0xFF); //--128
    Oled_Write_Cmd(0xA1); // set segment remap
    Oled_Write_Cmd(0xA6); //--normal / reverse
    Oled_Write_Cmd(0xA8); //--set multiplex ratio(1 to 64)
    Oled_Write_Cmd(0x3F); //--1/32 duty
    Oled_Write_Cmd(0xC8); // Com scan direction
    Oled_Write_Cmd(0xD3); //-set display offset
    Oled_Write_Cmd(0x00); //
    Oled_Write_Cmd(0xD5); // set osc division
    Oled_Write_Cmd(0x80); //
    Oled_Write_Cmd(0xD8); // set area color mode off
    Oled_Write_Cmd(0x05); //
    Oled_Write_Cmd(0xD9); // Set Pre-Charge Period
    Oled_Write_Cmd(0xF1); //
    Oled_Write_Cmd(0xDA); // set com pin configuartion
    Oled_Write_Cmd(0x12); //
    Oled_Write_Cmd(0xDB); // set Vcomh
    Oled_Write_Cmd(0x30); //
    Oled_Write_Cmd(0x8D); // set charge pump enable
    Oled_Write_Cmd(0x14); //
    Oled_Write_Cmd(0xAF); //--turn on oled panel
    Oled_Clear();
}

void Oled_Clear()
{
    unsigned char i, j; //-128 --- 127
    for (i = 0; i < 8; i++)
    {
        Oled_Write_Cmd(0xB0 + i); // page0--page7 //每个page从0列
        Oled_Write_Cmd(0x00);
        Oled_Write_Cmd(0x10); // 0到127列，依次写入0，每写入数据，列地址自动偏移
        for (j = 0; j < 128; j++)
        {
            Oled_Write_Data(0);
        }
    }
}
/*--  文字:  小  --*/
/*--  宋体12;  此字体下对应的点阵为：宽x高=16x16   --*/
code char xiao[2][16]={{0x00,0x00,0x00,0xE0,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x20,0x40,0x80,0x00,0x00},
                  {0x08,0x04,0x03,0x00,0x00,0x40,0x80,0x7F,0x00,0x00,0x00,0x00,0x00,0x01,0x0E,0x00}};

/*--  文字:  刘  --*/
/*--  宋体12;  此字体下对应的点阵为：宽x高=16x16   --*/
code char liu[2][16] ={{0x08,0x28,0x48,0x89,0x0E,0x88,0x78,0x08,0x08,0x00,0xF8,0x00,0x00,0xFF,0x00,0x00},
{0x40,0x20,0x10,0x09,0x06,0x19,0x60,0x00,0x00,0x00,0x0F,0x40,0x80,0x7F,0x00,0x00}};

/*--  文字:  同  --*/
/*--  宋体12;  此字体下对应的点阵为：宽x高=16x16   --*/
code char tong[2][16]= {{0x00,0x00,0xFE,0x02,0x12,0x92,0x92,0x92,0x92,0x92,0x92,0x12,0x02,0xFE,0x00,0x00},
{0x00,0x00,0xFF,0x00,0x00,0x1F,0x08,0x08,0x08,0x08,0x1F,0x40,0x80,0x7F,0x00,0x00}};

/*--  文字:  学  --*/
/*--  宋体12;  此字体下对应的点阵为：宽x高=16x16   --*/
code char xue[2][16]={{0x40,0x30,0x11,0x96,0x90,0x90,0x91,0x96,0x90,0x90,0x98,0x14,0x13,0x50,0x30,0x00},
{0x04,0x04,0x04,0x04,0x04,0x44,0x84,0x7E,0x06,0x05,0x04,0x04,0x04,0x04,0x04,0x00}};


void main()
{
   int i,j; 
    //oled 初始化
     Oled_Init();
     
    // 选择一个位置
    // 选择页寻址模式
    Oled_Write_Cmd(0x20);
     Oled_Write_Cmd(0x02);
    // 选择一个page0 1011 0000 == 0xB0
    for ( i =0;i<2;i++){
        Oled_Write_Cmd(0xB0+i);
        Oled_Write_Cmd(0x00);
        Oled_Write_Cmd(0x10);
        for (j = 0; j< 16; j++)
        {
            Oled_Write_Data(xiao[i][j]);
        }
        for (j = 0; j< 16; j++)
        {
            Oled_Write_Data(liu[i][j]);
        }
        for (j = 0; j< 16; j++)
        {
            Oled_Write_Data(tong[i][j]);
        }
        for (j = 0; j< 16; j++)
        {
            Oled_Write_Data(xue[i][j]);
        }
        
    }
      
     
    while(1);
    
}
441c9b56fdfac5f5ef87d2cd68608ca

相机拍摄的 刷新率有问题 肉眼看到没有 横杠

显示 照片

需要先对图片进行处理 分辨率为128*64

输出方法类似清屏 只不过 清屏时候 写入的 数据是0 显示图片 换成对应的数组值

image-20220815231250630 
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#include<REG52.H>
#include<INTRINS.H>
sbit scl = P0^0;
sbit sda = P0^1;
void Oled_Clear();
void IIC_start()
{
    scl = 0; 
    sda = 1;
    scl = 1;
    _nop_();
    sda = 0; 
    _nop_();

}  

void IIC_Stop()
{
    scl = 0;
    sda = 0; 
    scl = 1;
    _nop_(); 
    sda = 1; 
    _nop_(); 
}
char IIC_ACK()
{
    char flag; 
    sda = 1 ; //在时钟脉冲9期间释放数据线
    _nop_(); 
    scl = 1 ;
    _nop_(); 
    flag = sda ;
    _nop_(); 
    scl = 0 ; 
    _nop_(); 

    return flag;
}
void IIC_Send_Byte(char dataSend)
{
    int i ; 
    for (i = 0 ; i< 8;i++){ //发生八次
        scl = 0 ; //scl拉低, 让sda做好数据准备
        sda = dataSend & 0x80; //1000 0000 获得dataSend最高位 
        _nop_(); // 发送数据建立时间
        scl = 1 ; //scl 拉高开始发生
        _nop_(); //数据发送时间
        scl = 0 ; //发生完毕拉低
        _nop_(); //数据发送时间
        dataSend = dataSend << 1 ; //发送一次 移1位
    }

}
void Oled_Write_Cmd(char dataCmd)//写命令函数
{
    //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x00);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataCmd);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Write_Data(char dataData){ //写数据函数
        //     1. start()
    IIC_start();
    // 2. 写入 b0111 1000 0x78
    IIC_Send_Byte(0x78);
    // 3. ACK
    IIC_ACK();
    // 4. cotrol byte: (0)(0)000000 写入命令 (0)(1)000000写入数据
    IIC_Send_Byte(0x40);
    // 5. ACK
    IIC_ACK();
    // 6. 写入指令/数据
    IIC_Send_Byte(dataData);
    // 7. ACK
    IIC_ACK();
    // 8. STOP
    IIC_Stop();
}
void Oled_Init(void)
{
    Oled_Write_Cmd(0xAE); //--display off
    Oled_Write_Cmd(0x00); //---set low column address
    Oled_Write_Cmd(0x10); //---set high column address
    Oled_Write_Cmd(0x40); //--set start line address
    Oled_Write_Cmd(0xB0); //--set page address
    Oled_Write_Cmd(0x81); // contract control
    Oled_Write_Cmd(0xFF); //--128
    Oled_Write_Cmd(0xA1); // set segment remap
    Oled_Write_Cmd(0xA6); //--normal / reverse
    Oled_Write_Cmd(0xA8); //--set multiplex ratio(1 to 64)
    Oled_Write_Cmd(0x3F); //--1/32 duty
    Oled_Write_Cmd(0xC8); // Com scan direction
    Oled_Write_Cmd(0xD3); //-set display offset
    Oled_Write_Cmd(0x00); //
    Oled_Write_Cmd(0xD5); // set osc division
    Oled_Write_Cmd(0x80); //
    Oled_Write_Cmd(0xD8); // set area color mode off
    Oled_Write_Cmd(0x05); //
    Oled_Write_Cmd(0xD9); // Set Pre-Charge Period
    Oled_Write_Cmd(0xF1); //
    Oled_Write_Cmd(0xDA); // set com pin configuartion
    Oled_Write_Cmd(0x12); //
    Oled_Write_Cmd(0xDB); // set Vcomh
    Oled_Write_Cmd(0x30); //
    Oled_Write_Cmd(0x8D); // set charge pump enable
    Oled_Write_Cmd(0x14); //
    Oled_Write_Cmd(0xAF); //--turn on oled panel
    Oled_Clear();
}

void Oled_Clear()
{
    unsigned char i, j; //-128 --- 127
    for (i = 0; i < 8; i++)
    {
        Oled_Write_Cmd(0xB0 + i); // page0--page7 //每个page从0列
        Oled_Write_Cmd(0x00);
        Oled_Write_Cmd(0x10); // 0到127列，依次写入0，每写入数据，列地址自动偏移
        for (j = 0; j < 128; j++)
        {
            Oled_Write_Data(0);
        }
    }
}
void Oled_Show_Image(unsigned char* img)
{
    unsigned char i;
    unsigned int j; 
    for (i = 0; i < 8 ; i++)
    {
        Oled_Write_Cmd(0xB0 + i); // page0--page7 //每个page从0列
        Oled_Write_Cmd(0x00);
        Oled_Write_Cmd(0x10); // 0到127列，依次写入0，每写入数据，列地址自动偏移
        for (j = 128 * i; j < 128 * (i+1); j++)
        {
            Oled_Write_Data(img[j]);
        }
    }
}
unsigned char code BMP1[] =
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0xC0,0xC0,0xE0,0xE0,0xE0,0xE0,0xF0,
0xF0,0xF8,0xF8,0xF8,0xF8,0xF8,0xF8,0x70,0x70,0xE0,0xE0,0xFE,0xFE,0xFE,0xFE,0xBE,
0xBE,0x1E,0x1E,0x1F,0x1F,0x1F,0x1F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x03,
0x03,0x83,0x83,0x83,0x83,0x03,0x03,0x67,0x67,0x67,0x67,0x67,0x67,0x06,0x06,0x86,
0x86,0x8E,0x8E,0x8E,0x8E,0x1C,0x1C,0x1C,0x1C,0x1C,0x1C,0x38,0x38,0x78,0x78,0x70,
0x70,0xE0,0xE0,0xE0,0xE0,0xC0,0xC0,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0xC0,0xE0,0xE0,0xF8,0xF8,0xF8,
0xF8,0xF8,0xF8,0xF9,0xF9,0x73,0x73,0x2F,0x2F,0x0F,0x0F,0x0F,0x0F,0x07,0x07,0x03,
0x03,0x01,0x01,0x70,0x70,0x7E,0x7E,0x3F,0x3F,0x0F,0x0F,0x7F,0x7F,0xFF,0xFF,0xFF,
0xFF,0x38,0x38,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x04,0x04,0x05,0x05,0x05,0x05,0x07,0x07,0x16,0x16,0x1E,0x1E,0x3E,0x3E,0x3E,
0x3E,0x3F,0x3F,0x1F,0x1F,0x07,0x07,0x0E,0x0E,0x0E,0x0E,0x0E,0x0E,0x1F,0x1F,0x3F,
0x3F,0x3F,0x3F,0x7F,0x7F,0x77,0x77,0x7F,0x7F,0x3F,0x3F,0x3F,0x3F,0x7E,0x7E,0xFC,
0xFC,0xF8,0xF8,0xE0,0xE0,0xC0,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x18,0x18,0x3E,0x3E,0x7F,0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x1F,
0x1F,0x07,0x07,0x81,0x81,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,
0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,
0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x02,0x02,0x06,0x06,0x04,0x04,0x04,0x04,0x0C,0x0C,0x0C,
0x0C,0x0C,0x0C,0x3C,0x3C,0x7F,0x7F,0x7F,0x7F,0x7F,0x7F,0x7E,0x7E,0xFE,0xFC,0xEC,
0xEC,0xF0,0xF0,0xFC,0xFC,0xFC,0xFC,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0xC0,0x00,
0x00,0x03,0x03,0x1F,0x1F,0xFF,0xFF,0xFF,0xFF,0xFE,0xFE,0xF8,0xF8,0xC0,0xC0,0x00,
0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFC,0xFC,0xFC,0xFC,0x18,0x18,0x7D,
0x7D,0xFD,0xFD,0xFF,0xFF,0xDF,0xDF,0x3F,0x3F,0x3B,0x3B,0x3B,0x3B,0x33,0x33,0x33,
0x33,0x23,0x23,0x03,0x03,0x01,0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x80,
0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,
0x03,0x07,0x07,0x0F,0x0F,0x0F,0x0F,0x9E,0x9E,0xFD,0xFD,0xF9,0xF9,0xFC,0xFC,0xFC,
0xFC,0x78,0x78,0xF8,0xF8,0xF9,0xF9,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC,
0x7F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,0x7F,0x78,0x78,0x00,
0x00,0x00,0x00,0x81,0x81,0x83,0x83,0x83,0x83,0x80,0x80,0x80,0x80,0x80,0x80,0x00,
0x00,0xC0,0xC0,0xE0,0xE0,0xF0,0xF0,0x78,0x78,0xB8,0xB8,0xDC,0xDC,0xCE,0xCE,0xEE,
0xEE,0x77,0x77,0x77,0x77,0xB7,0xB7,0xBB,0xBB,0xBB,0xBB,0xDB,0xDB,0xDB,0xDB,0xDB,
0xDB,0xDB,0xDB,0xDB,0xDB,0xBB,0xBB,0xBB,0xBB,0xB7,0xB7,0x77,0x77,0x77,0x77,0xEE,
0xEE,0xDE,0xDE,0xDC,0xDC,0xB8,0xB8,0x78,0x78,0xF0,0xF0,0xE0,0xE0,0xC0,0xC0,0x00,
0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x81,0x81,0x83,0x83,0x83,0x83,0x0F,0x0F,0x0F,
0x1F,0x1F,0x1F,0x1F,0x1F,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x7F,
0x00,0x01,0x01,0x19,0x19,0x5D,0x5D,0xDE,0xDE,0xEE,0xEE,0xF6,0xF6,0x77,0x77,0xB7,
0xB7,0xBB,0xBB,0xBB,0xBB,0xFB,0xFB,0xDB,0xDB,0xDB,0xDB,0xDB,0xDB,0xBB,0xBB,0xBB,
0xBB,0xBB,0xBB,0xB7,0xB7,0x77,0x77,0xFF,0xFF,0xEF,0xEF,0xDF,0xDF,0xDD,0xDD,0xBE,
0xBE,0x7F,0x7F,0xF7,0xF7,0xFB,0xFB,0xFB,0xFB,0x1D,0x1D,0x1D,0x9D,0x8D,0x8D,0x8D,
0x8D,0x8D,0x8D,0x1D,0x1D,0x1D,0x1D,0xFB,0xFB,0xFB,0xFB,0xF7,0xF7,0x7F,0x7F,0xBE,
0xBE,0xDD,0xDD,0xDF,0xDF,0xEF,0xEF,0xFF,0xFF,0x77,0x77,0xF7,0xF7,0xBB,0xBB,0xBB,
0xBB,0xBB,0xBB,0xDB,0xDB,0xDB,0xDB,0xDB,0xDB,0xBB,0xBB,0xBB,0xBB,0xBB,0xBB,0xB7,
0xB7,0x77,0x77,0xF6,0xF6,0xEE,0xEE,0xDE,0xDE,0x5D,0x5D,0x19,0x19,0x01,0x01,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x06,0x06,0x07,0x17,0x17,0x3B,
0x3B,0x3B,0x3B,0x1D,0x1D,0x1D,0x1D,0x1D,0x1D,0x0D,0x0D,0x1D,0x1D,0x1D,0x1D,0x1F,
0x1F,0xFB,0xFB,0xF7,0xF7,0xF7,0xF7,0x7E,0x7E,0xBE,0xBE,0xDD,0xDD,0xDF,0xDF,0xEF,
0xEF,0xFF,0xFF,0x77,0x77,0xF7,0xF7,0xBF,0xBF,0xBB,0xBB,0xBB,0xBB,0xBB,0xBB,0xBB,
0xBB,0xBB,0xBB,0xBB,0xBB,0xBB,0xBB,0xB7,0xB7,0xF7,0xF7,0x77,0x77,0xEF,0xEF,0xEF,
0xEF,0xDF,0xDF,0xBD,0xBD,0xBE,0xBE,0x7E,0x7E,0xF7,0xF7,0xF7,0xF7,0xFB,0xFB,0x1F,
0x1F,0x1D,0x1D,0x1D,0x1D,0x0D,0x0D,0x1D,0x1D,0x1D,0x1D,0x1F,0x1F,0x3B,0x3B,0x3B,
0x3B,0x17,0x17,0x06,0x06,0x06,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0E,0x0E,0x0F,
0x0F,0x0F,0x0F,0x3B,0x3B,0x3D,0x3D,0x3F,0x3F,0x6F,0x6F,0x77,0x77,0x7D,0x7D,0x3E,
0x3E,0xDE,0xDE,0xF7,0xF7,0xF7,0xF7,0x3B,0x3B,0x3B,0x3B,0x1D,0x1D,0x1D,0x1D,0x1D,
0x1D,0x1D,0x1D,0x1D,0x1D,0x3B,0x3B,0x3B,0x3B,0xF7,0xF7,0xF7,0xF7,0xDE,0xDE,0x3E,
0x3E,0x7D,0x7D,0x77,0x77,0x6F,0x6F,0x3E,0x3E,0x3D,0x3D,0x3B,0x3B,0x0F,0x0F,0x0F,
0x0F,0x0E,0x0E,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
};


void main()
{
   
    //oled 初始化
     Oled_Init();
     
    // 选择一个位置
    // 选择页寻址模式
    Oled_Write_Cmd(0x20);
     Oled_Write_Cmd(0x02);
    // 选择一个page0 1011 0000 == 0xB0

    Oled_Write_Cmd(0xB0);
    Oled_Show_Image(BMP1);
    
      
     
    while(1);
    
}
705b8c6db0fe5ca8b8d9601c3f984b1