• oled屏幕模块


    oled屏幕模块似乎是厂家提供的

    也许可以根据屏幕驱动芯片去写

    根据现在了解的芯片一般有两个:SH1106和SSD1306

    不过这次我们用的是SSD1306芯片驱动的屏幕

    下面是从裸屏到模块的pcb:

     有上面的图可以看出,虽然是双色,但是只是底子不同罢了,其实还是单色的.

    下面是51单片机的程序:

    下面是初始化程序:初始化函数里面都是一些发送指令和数据的.

    发送指令和数据的函数如下:

    发送指令和数据的函数:

    void OLED_WrCmd(UCHAR8 ucCmd)    //发送指令
    {
        UCHAR8 i = 8;OLED_DC   = 0;
        OLED_SCL  = 0;
        while (i--)
        {
            if (ucCmd & 0x80)
            {
                OLED_SDA = 1;
            }
            else
            {
                OLED_SDA = 0;
            }
            OLED_SCL = 1;
            _nop_();           
            OLED_SCL = 0;    
            ucCmd <<= 1;   
        }  
    
        return;
    }

    初始化:

    void OLED_Init()        
    {
        UCHAR8 i;
    
        OLED_SCL = 1;      
        OLED_RST = 0;
        
        for(i = 0; i < 100; i++)
        {
            _nop_();            //从上电到下面开始初始化要有足够的时间,即等待RC复位完毕      
        }
        
        OLED_RST = 1;
    
        SetDisplayOnOff(0x00);     // Display Off (0x00/0x01)
        SetDisplayClock(0x80);     // Set Clock as 100 Frames/Sec
        SetMultiplexRatio(0x3F);   // 1/64 Duty (0x0F~0x3F)
        SetDisplayOffset(0x00);    // Shift Mapping RAM Counter (0x00~0x3F)
        SetStartLine(0x00);        // Set Mapping RAM Display Start Line (0x00~0x3F)
        SetChargePump(0x04);       // Enable Embedded DC/DC Converter (0x00/0x04)
        SetAddressingMode(0x02);   // Set Page Addressing Mode (0x00/0x01/0x02)
        SetSegmentRemap(0x01);     // Set SEG/Column Mapping     0x00左右反置 0x01正常
        SetCommonRemap(0x08);      // Set COM/Row Scan Direction 0x00上下反置 0x08正常
        SetCommonConfig(0x10);     // Set Sequential Configuration (0x00/0x10)
        SetContrastControl(0xcf);  // Set SEG Output Current
        SetPrechargePeriod(0xF1);  // Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
        SetVCOMH(0x40);            // Set VCOM Deselect Level
        SetEntireDisplay(0x00);    // Disable Entire Display On (0x00/0x01)
        SetInverseDisplay(0x00);   // Disable Inverse Display On (0x00/0x01)  
        SetDisplayOnOff(0x01);     // Display On (0x00/0x01)
        OLED_Fill(0x00);            // 初始清屏   //这句话还是可以理解,但是上面的一堆又是什么呢
        OLED_SetPos(0,0);
    
        return;
    } 

    初始化里面的子函数如下所示:

    void SetDisplayOnOff(UCHAR8 ucData)
    {
        OLED_WrCmd(0xAE|ucData); // Set Display On/Off
                                // Default => 0xAE
                                // 0xAE (0x00) => Display Off
                                // 0xAF (0x01) => Display On
    }
    
    void SetDisplayClock(UCHAR8 ucData)
    {
        OLED_WrCmd(0xD5);        // Set Display Clock Divide Ratio / Oscillator Frequency
        OLED_WrCmd(ucData);      // Default => 0x80
                                //D[3:0] => Display Clock Divider
                                // D[7:4] => Oscillator Frequency
    }
    
    void SetMultiplexRatio(UCHAR8 ucData)
    {
        OLED_WrCmd(0xA8);        // Set Multiplex Ratio
        OLED_WrCmd(ucData);      // Default => 0x3F (1/64 Duty)
    }
    
    void SetDisplayOffset(UCHAR8 ucData)
    {
        OLED_WrCmd(0xD3);        // Set Display Offset
        OLED_WrCmd(ucData);      // Default => 0x00
    }
    
    void SetStartLine(UCHAR8 ucData)
    {
        OLED_WrCmd(0x40|ucData); // Set Display Start Line
                                // Default => 0x40 (0x00)
    }
    
    
    void SetChargePump(UCHAR8 ucData)
    {
        OLED_WrCmd(0x8D);        // Set Charge Pump
        OLED_WrCmd(0x10|ucData); // Default => 0x10
                                // 0x10 (0x00) => Disable Charge Pump
                                // 0x14 (0x04) => Enable Charge Pump
    }
    
    void SetAddressingMode(UCHAR8 ucData)
    {
        OLED_WrCmd(0x20);        // Set Memory Addressing Mode
        OLED_WrCmd(ucData);      // Default => 0x02
                                // 0x00 => Horizontal Addressing Mode
                                // 0x01 => Vertical Addressing Mode
                                // 0x02 => Page Addressing Mode
    }
    
    void SetSegmentRemap(UCHAR8 ucData)
    {
        OLED_WrCmd(0xA0|ucData); // Set Segment Re-Map
                                // Default => 0xA0
                                // 0xA0 (0x00) => Column Address 0 Mapped to SEG0
                                // 0xA1 (0x01) => Column Address 0 Mapped to SEG127
    }
    
    
    void SetCommonRemap(UCHAR8 ucData)
    {
        OLED_WrCmd(0xC0|ucData); // Set COM Output Scan Direction
                                // Default => 0xC0
                                // 0xC0 (0x00) => Scan from COM0 to 63
                                // 0xC8 (0x08) => Scan from COM63 to 0
    }
    
    void SetCommonConfig(UCHAR8 ucData)
    {
        OLED_WrCmd(0xDA);        // Set COM Pins Hardware Configuration
        OLED_WrCmd(0x02|ucData); // Default => 0x12 (0x10)
                                // Alternative COM Pin Configuration
                                // Disable COM Left/Right Re-Map
    }
    
    void SetContrastControl(UCHAR8 ucData)
    {
        OLED_WrCmd(0x81);        // SetContrast Control
        OLED_WrCmd(ucData);      // Default => 0x7F
    }
    
    void SetPrechargePeriod(UCHAR8 ucData)
    {
        OLED_WrCmd(0xD9);        // Set Pre-Charge Period
        OLED_WrCmd(ucData);      // Default => 0x22 (2 Display Clocks [Phase 2] / 2 Display Clocks [Phase 1])
                                // D[3:0] => Phase 1 Period in 1~15 Display Clocks
                                // D[7:4] => Phase 2 Period in 1~15 Display Clocks
    }
    
    
    void SetVCOMH(UCHAR8 ucData)
    {
        OLED_WrCmd(0xDB);        // Set VCOMH Deselect Level
        OLED_WrCmd(ucData);      // Default => 0x20 (0.77*VCC)
    }
    
    void SetEntireDisplay(UCHAR8 ucData)
    {
        OLED_WrCmd(0xA4|ucData); // Set Entire Display On / Off
                                // Default => 0xA4
                                // 0xA4 (0x00) => Normal Display
                                // 0xA5 (0x01) => Entire Display On
    }
    
    void SetInverseDisplay(UCHAR8 ucData)
    {
        OLED_WrCmd(0xA6|ucData); // Set Inverse Display On/Off
                                // Default => 0xA6
                                // 0xA6 (0x00) => Normal Display
                                // 0xA7 (0x01) => Inverse Display On
    }
    
    void SetDisplayOnOff(UCHAR8 ucData)
    {
        OLED_WrCmd(0xAE|ucData); // Set Display On/Off
                                // Default => 0xAE
                                // 0xAE (0x00) => Display Off
                                // 0xAF (0x01) => Display On
    }
    
    void OLED_Fill(UCHAR8 ucData)
    {
        UCHAR8 ucPage,ucColumn;
        
        for(ucPage = 0; ucPage < 8; ucPage++)
        {
            OLED_WrCmd(0xb0 + ucPage);  //0xb0+0~7表示页0~7     8*8=64
            OLED_WrCmd(0x00);            //0x00+0~16表示将128列分成16组其地址在某组中的第几列   16*8=128
            OLED_WrCmd(0x10);            //0x10+0~16表示将128列分成16组其地址所在第几组
            for(ucColumn = 0; ucColumn < 128; ucColumn++)
            {
                OLED_WrDat(ucData);
            }
        }
    } 
    
    void OLED_SetPos(UCHAR8 ucIdxX, UCHAR8 ucIdxY)   //坐标指定.
    { 
        OLED_WrCmd(0xb0 + ucIdxY);    
        OLED_WrCmd(((ucIdxX & 0xf0) >> 4) | 0x10);    //在第几组
        OLED_WrCmd((ucIdxX & 0x0f) | 0x00);            //在某一组的,第几列
    } 

    然后:让屏幕显示,年月日的程序:

    //OLED显示日期函数
    void DAY_OLED_Display()
    {
        year=TableDs1302[6];                   //GPS或时钟芯片读取时间放在此变量中
        mooth=TableDs1302[4];                  //GPS或时钟芯片读取时间放在此变量中
        day=TableDs1302[3];                    //GPS或时钟芯片读取时间放在此变量中
        OLED_P8x16char(0, 5, 2+'0');   //下面这两行显示:20   
        OLED_P8x16char(8, 5, 0+'0');
        OLED_P8x16char(16, 5, year/10+'0');
        OLED_P8x16char(24, 5, year%10+'0');//显示20**年
        OLED_P8x16char(32, 5, '-');       //分隔标记
        OLED_P8x16char(40, 5, mooth/10+'0');
        OLED_P8x16char(48, 5, mooth%10+'0');//显示月
        OLED_P8x16char(56, 5, '-');         //
        OLED_P8x16char(64, 5, day/10+'0');//显示日期
        OLED_P8x16char(72, 5, day%10+'0');
    }
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  • 原文地址:https://www.cnblogs.com/chulin/p/9265401.html
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