#2020征文-开发板#基于鸿蒙OS移植OLED驱动程序

//向SSD1106写入一个字节。
//dat:要写入的数据/命令
//cmd:数据/命令标志 0,表示命令;1,表示数据;
void OLED_WR_Byte(uint8_t dat,uint8_t cmd)
{
    hi_u8 m_send_data[2] = { 0 };
    hi_u32 status;
    hi_i2c_data hi3861_i2c_data = { 0 };
    if(cmd)
    {
        m_send_data[0] = 0x40;
            
    }
    else 
    {
        m_send_data[0] = 0x00;
    }
    m_send_data[1] = dat;   
    hi3861_i2c_data.send_buf = m_send_data;
    hi3861_i2c_data.send_len = 2;
    status = hi_i2c_write(HI_I2C_IDX_0, 0x78, &hi3861_i2c_data);  //0x78为模块的默认地址
    if (status != HI_ERR_SUCCESS) {
        printf("===== Error: I2C write status = 0x%x! =====\r\n", status);
        return;
    }
} 
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void OLED_Init(void)
{        
OLED_WR_Byte(0xAE,OLED_CMD); //--turn off oled panel
OLED_WR_Byte(0x00,OLED_CMD); //---set low column address
OLED_WR_Byte(0x10,OLED_CMD); //---set high column address
OLED_WR_Byte(0x40,OLED_CMD); //--set start line address  Set Mapping RAM display Start Line (0x00~0x3F)
OLED_WR_Byte(0x81,OLED_CMD); //--set contrast control register
OLED_WR_Byte(0xCF,OLED_CMD);  // Set SEG Output Current Brightness
OLED_WR_Byte(0xA1,OLED_CMD); //--Set SEG/Column Mapping     0xa0左右反置 0xa1正常
OLED_WR_Byte(0xC8,OLED_CMD); //Set COM/Row Scan Direction   0xc0上下反置 0xc8正常
OLED_WR_Byte(0xA6,OLED_CMD); //--set normal display
OLED_WR_Byte(0xA8,OLED_CMD); //--set multiplex ratio(1 to 64)
OLED_WR_Byte(0x3f,OLED_CMD); //--1/64 duty
OLED_WR_Byte(0xD3,OLED_CMD); //-set display offset Shift Mapping RAM Counter (0x00~0x3F)
OLED_WR_Byte(0x00,OLED_CMD); //-not offset
OLED_WR_Byte(0xd5,OLED_CMD); //--set display clock divide ratio/oscillator frequency
OLED_WR_Byte(0x80,OLED_CMD); //--set divide ratio, Set Clock as 100 Frames/Sec
OLED_WR_Byte(0xD9,OLED_CMD); //--set pre-charge period
OLED_WR_Byte(0xF1,OLED_CMD); //Set Pre-Charge as 15 Clocks & Discharge as 1 Clock
OLED_WR_Byte(0xDA,OLED_CMD); //--set com pins hardware configuration
OLED_WR_Byte(0x12,OLED_CMD);
OLED_WR_Byte(0xDB,OLED_CMD); //--set vcomh
OLED_WR_Byte(0x40,OLED_CMD); //Set VCOM Deselect Level
OLED_WR_Byte(0x20,OLED_CMD); //-Set Page Addressing Mode (0x00/0x01/0x02)
OLED_WR_Byte(0x02,OLED_CMD); //
OLED_WR_Byte(0x8D,OLED_CMD); //--set Charge Pump enable/disable
OLED_WR_Byte(0x14,OLED_CMD); //--set(0x10) disable
OLED_WR_Byte(0xA4,OLED_CMD); // Disable Entire Display On (0xa4/0xa5)
OLED_WR_Byte(0xA6,OLED_CMD); // Disable Inverse Display On (0xa6/a7) 
OLED_WR_Byte(0xAF,OLED_CMD); //--turn on oled panel

OLED_WR_Byte(0xAF,OLED_CMD);  /*display ON*/ 
OLED_Clear();
OLED_Set_Pos(0,0);  
}
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void OLED_Demo(void)
{
    //初始化
    hi_i2c_init(HI_I2C_IDX_0, 100000);

    OLED_Init();

    OLED_Clear();

    //OLED_ShowString(0,4,(u8 *)" 0.96 OLED Demo ");   

    for(i=0;i<8;i++)
    {
        OLED_ShowCHinese(i*16,0,i+0);  
    }

    for(i=0;i<7;i++)
    {
        OLED_ShowCHinese(i*16,2,i+8);  
    }   

    for(i=0;i<4;i++)
    {
        OLED_ShowCHinese(i*16,4,i+15);  
    }

    for(i=0;i<4;i++)
    {
        OLED_ShowCHinese(i*16,6,i+19);  
    }
}

SYS_RUN(OLED_Demo);
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static_library("OLED_Demo") {
    sources = [
        "oled.c"
    ]

    include_dirs = [
        "//utils/native/lite/include",
        "//kernel/liteos_m/components/cmsis/2.0",
        
    ]
}
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lite_component("app") {
    features = [
        #"startup",
        "oled:OLED_Demo"
    ]
}
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