本帖最后由 byz1027004184 于 2015-11-24 09:35 编辑
各位大神，我用STM32L152自带的LCD控制器驱动段式液晶屏，段式液晶屏占空比1/4,偏压比1/3，驱动电压为3.0v.初始化代码如下：
- void LCDInit(void){
- LCD_InitTypeDef LCD_InitStructure;
- RCC_LSICmd(ENABLE);
- while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);
- RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
-
- LCD_GPIOConfig();
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_LCD, ENABLE);
-
- LCD_InitStructure.LCD_Prescaler = LCD_Prescaler_8;
- LCD_InitStructure.LCD_Divider = LCD_Divider_16;
- LCD_InitStructure.LCD_Duty = LCD_Duty_1_4;
- LCD_InitStructure.LCD_Bias = LCD_Bias_1_3;
- LCD_InitStructure.LCD_VoltageSource = LCD_VoltageSource_Internal;
- LCD_Init(&LCD_InitStructure);
-
- LCD_HighDriveCmd(ENABLE);
- /*!< Configure the Pulse On Duration */
- LCD_PulseOnDurationConfig(LCD_PulseOnDuration_7);
-
- /*!< Configure the LCD Contrast (2.99V) */
- LCD_ContrastConfig(LCD_Contrast_Level_3);
- /*!< Wait Until the LCD FCR register is synchronized */
- LCD_WaitForSynchro();
-
- /*!< Enable LCD peripheral */
- LCD_Cmd(ENABLE);
-
- /*!< Wait Until the LCD is enabled */
- while(LCD_GetFlagStatus(LCD_FLAG_ENS) == RESET);
- /*!< Wait Until the LCD Booster is ready */
- while(LCD_GetFlagStatus(LCD_FLAG_RDY) == RESET);
- }
可是残影问题严重，有没有大神有过这方面的经历，一起讨论一下。
问题已经解决，问题原因是飞线导致了信号的失真，谢谢各位的热心解答。
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楼主
