oled屏幕模块

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;
}

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;
} 

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
} 

//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‘);
}