SSD1306(OLED屏幕)反向显示问题

昨天接手一个需要维护的项目，其中有一个OLED屏幕显示总是反的，下面是原来的驱动程序：

    Write_IIC_Command(0xAE); //关闭显示
	Write_IIC_Command(0xD5); //设置时钟分频因子,震荡频率
	Write_IIC_Command(0x50); //[3:0],分频因子;[7:4],震荡频率
	Write_IIC_Command(0xA8); //设置驱动路数
	Write_IIC_Command(0X3F); //默认0X3F(1/64) 
	Write_IIC_Command(0xD3); //设置显示偏移
	Write_IIC_Command(0X00); //默认为0
	Write_IIC_Command(0x40); //设置显示开始行 [5:0],行数.									    
	Write_IIC_Command(0x8D); //电荷泵设置
	Write_IIC_Command(0x14); //bit2，开启/关闭
	Write_IIC_Command(0x20); //设置内存地址模式
	Write_IIC_Command(0x02); //[1:0],00，列地址模式;01，行地址模式;10,页地址模式;默认10;
	Write_IIC_Command(0xA1); //段重定义设置,bit0:0,0->0;1,0->127; 
	Write_IIC_Command(0xC8); //设置COM扫描方向; 
	Write_IIC_Command(0xDA); //设置COM硬件引脚配置
	Write_IIC_Command(0x12); //[5:4]配置
	Write_IIC_Command(0x81); //对比度设置
	Write_IIC_Command(0xEF); //1~255;默认0X7F (亮度设置,越大越亮)
	Write_IIC_Command(0xD9); //设置预充电周期
	Write_IIC_Command(0xf1); //[3:0],PHASE 1;[7:4],PHASE 2;
	Write_IIC_Command(0xDB); //设置VCOMH 电压倍率
	Write_IIC_Command(0x30); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
	Write_IIC_Command(0xA4); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
    Write_IIC_Command(0xA6); //设置显示方式;bit0:1,反相显示;0,正常显示						   
	Write_IIC_Command(0xAF); //开启显示	 
    OLED_Clear();

找了半天才找到。。。

更改显示方向方法：

    Write_IIC_Command(0xAE); //关闭显示
	Write_IIC_Command(0xD5); //设置时钟分频因子,震荡频率
	Write_IIC_Command(0x50); //[3:0],分频因子;[7:4],震荡频率
	Write_IIC_Command(0xA8); //设置驱动路数
	Write_IIC_Command(0X3F); //默认0X3F(1/64) 
	Write_IIC_Command(0xD3); //设置显示偏移
	Write_IIC_Command(0X00); //默认为0
	Write_IIC_Command(0x40); //设置显示开始行 [5:0],行数.									    
	Write_IIC_Command(0x8D); //电荷泵设置
	Write_IIC_Command(0x14); //bit2，开启/关闭
	Write_IIC_Command(0x20); //设置内存地址模式
	Write_IIC_Command(0x02); //[1:0],00，列地址模式;01，行地址模式;10,页地址模式;默认10;
	Write_IIC_Command(0xA0); //段重定义设置,bit0:0,0->0;1,0->127;   0xA0<-->0xA1  
	Write_IIC_Command(0xC0); //设置COM扫描方向; 0xC0<-->0xC1:垂直反向
	Write_IIC_Command(0xDA); //设置COM硬件引脚配置
	Write_IIC_Command(0x12); //[5:4]配置
	Write_IIC_Command(0x81); //对比度设置
	Write_IIC_Command(0xEF); //1~255;默认0X7F (亮度设置,越大越亮)
	Write_IIC_Command(0xD9); //设置预充电周期
	Write_IIC_Command(0xf1); //[3:0],PHASE 1;[7:4],PHASE 2;
	Write_IIC_Command(0xDB); //设置VCOMH 电压倍率
	Write_IIC_Command(0x30); //[6:4] 000,0.65*vcc;001,0.77*vcc;011,0.83*vcc;
	Write_IIC_Command(0xA4); //全局显示开启;bit0:1,开启;0,关闭;(白屏/黑屏)
    Write_IIC_Command(0xA6); //设置显示方式;bit0:1,反相显示;0,正常显示						   
	Write_IIC_Command(0xAF); //开启显示	 
	OLED_Clear();

原因就不再啰嗦。