[求助] 2.8寸TFTLCD无法显示

反倒是fdsf 2018-12-21 10:13 楼主

2.8寸TFTLCD屏不仅无法显示，连背光都不能工作，驱动背光在LCD初始化代码里，我把部分重要的代码贴下来，恳请大佬帮我过目一下，我寻找了好几天还是查找不出来了，开始怀疑是不是硬件方面出现的问题了，小弟在此谢过了！！！

我用的是NE1,地址线是A16, 基地址设置为： #define LCD_BASE ((u32)(0x60000000 | 0x0001FFFE)) #define LCD ((LCD_TypeDef *) LCD_BASE) PE1口接的LCD背光 PD7接LCD_CS PD11接LCD_RS 其他设置和原子哥的模板一模一样的 FSMC初始化配置如下： GPIO_InitTypeDef GPIO_InitStructure; FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure; FSMC_NORSRAMTimingInitTypeDef readWriteTiming; FSMC_NORSRAMTimingInitTypeDef writeTiming; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC,ENABLE); //使能FSMC时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE|RCC_APB2Periph_GPIOD ,ENABLE);//使能PORTE，PORTD GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //PE1 推挽输出背光 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOE, &GPIO_InitStructure); //PORTD复用推挽输出 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_14|GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); //PORTE复用推挽输出 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOE, &GPIO_InitStructure); //PORTD12复用推挽输出 A16 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7|GPIO_Pin_11; // //PORTD复用推挽输出 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure); readWriteTiming.FSMC_AddressSetupTime = 0x01; //地址建立时间（ADDSET）为2个HCLK 1/36M=27ns readWriteTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（ADDHLD）模式A未用到 readWriteTiming.FSMC_DataSetupTime = 0x0f; // 数据保存时间为16个HCLK,因为液晶驱动IC的读数据的时候，速度不能太快，尤其对1289这个IC。 readWriteTiming.FSMC_BusTurnAroundDuration = 0x00; readWriteTiming.FSMC_CLKDivision = 0x00; readWriteTiming.FSMC_DataLatency = 0x00; readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A writeTiming.FSMC_AddressSetupTime = 0x00; //地址建立时间（ADDSET）为1个HCLK writeTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（A writeTiming.FSMC_DataSetupTime = 0x03; ////数据保存时间为4个HCLK writeTiming.FSMC_BusTurnAroundDuration = 0x00; writeTiming.FSMC_CLKDivision = 0x00; writeTiming.FSMC_DataLatency = 0x00; writeTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;// 这里我们使用NE1 。 FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; // 不复用数据地址 FSMC_NORSRAMInitStructure.FSMC_MemoryType =FSMC_MemoryType_SRAM;// FSMC_MemoryType_SRAM; //SRAM FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;//存储器数据宽度为16bit FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode =FSMC_BurstAccessMode_Disable;// FSMC_BurstAccessMode_Disable; FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait=FSMC_AsynchronousWait_Disable; FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState; FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; // 存储器写使能 FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable; FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; // 读写使用不同的时序 FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable; FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &readWriteTiming; //读写时序 FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &writeTiming; //写时序 FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); //初始化FSMC配置 FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE); // 使能BANK1 本帖最后由反倒是fdsf 于 2018-12-21 13:06 编辑

MP3播放器原理图&PCB.rar (2018-12-21 13:06 上传)