搞了两套程序，官方的不显示我自己的按照映射关系写入RAM不正常。
我使用的时Com4-7这是官方的
- CLK_PeripheralClockConfig(CLK_Peripheral_LCD, ENABLE);
- /* Initialize the LCD */
- LCD_Init(LCD_Prescaler_2, LCD_Divider_18, LCD_Duty_1_4,
- LCD_Bias_1_3, LCD_VoltageSource_Internal);
- /* Mask register*/
- LCD_PortMaskConfig(LCD_PortMaskRegister_0, 0xFF);
- LCD_PortMaskConfig(LCD_PortMaskRegister_1, 0x0F);
- LCD_PortMaskConfig(LCD_PortMaskRegister_2, 0x00);
- LCD_PortMaskConfig(LCD_PortMaskRegister_3, 0x00);
- LCD_ContrastConfig(LCD_Contrast_Level_7);
- LCD_DeadTimeConfig(LCD_DeadTime_0);
- LCD_PulseOnDurationConfig(LCD_PulseOnDuration_1);
- LCD_Cmd(ENABLE); /*!< Enable LCD peripheral */
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