关于TFTLCD读取问题-kmust的回答

关于TFTLCD读取问题

2019-07-20 18:11发布

我想使用FSMC来实现ILI9341 LCD的驱动，代码如下，存在的问题是读取不到数据，我使用的是地址线A0作为指令/数据线，然后参考了原子的代码，将相应的位置修改到我的硬件连接（代码见第二部分[mw_shl_code=applescript,true]GPIO_InitTypeDef  GPIO_InitStructure;
FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
  FSMC_NORSRAMTimingInitTypeDef  readWriteTiming;
FSMC_NORSRAMTimingInitTypeDef  writeTiming;

RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB|RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_GPIOE|RCC_AHB1Periph_GPIOF|RCC_AHB1Periph_GPIOG, ENABLE);//使能PD,PE,PF,PG时钟
  RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC,ENABLE);//使能FSMC时钟

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;//PB15 推挽输出,控制背光
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;//普通输出模式
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//100MHz
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
  GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化 //PB15 推挽输出,控制背光

  GPIO_InitStructure.GPIO_Pin = (3<<0)|(3<<4)|(7<<8)|(3<<14);//PD0,1,4,5,8,9,10,14,15 AF OUT
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
  GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化

  GPIO_InitStructure.GPIO_Pin = (0X1FF<<7);//PE7~15,AF OUT
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
  GPIO_Init(GPIOE, &GPIO_InitStructure);//初始化

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;//PF12,FSMC_A6
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
  GPIO_Init(GPIOF, &GPIO_InitStructure);//初始化

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;//PF12,FSMC_A6
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用输出
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;//推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;//100MHz
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;//上拉
  GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化

  GPIO_PinAFConfig(GPIOD,GPIO_PinSource0,GPIO_AF_FSMC);//PD0,AF12
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource1,GPIO_AF_FSMC);//PD1,AF12
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource4,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource5,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource8,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource9,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource10,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource14,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource15,GPIO_AF_FSMC);//PD15,AF12

  GPIO_PinAFConfig(GPIOE,GPIO_PinSource7,GPIO_AF_FSMC);//PE7,AF12
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource8,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource9,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource10,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource11,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource12,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource13,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource14,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource15,GPIO_AF_FSMC);//PE15,AF12

  GPIO_PinAFConfig(GPIOF,GPIO_PinSource12,GPIO_AF_FSMC);//PF12,AF12
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource7,GPIO_AF_FSMC);

  readWriteTiming.FSMC_AddressSetupTime = 0XF;    //地址建立时间（ADDSET）为16个HCLK 1/168M=6ns*16=96ns
  readWriteTiming.FSMC_AddressHoldTime = 0x00;    //地址保持时间（ADDHLD）模式A未用到
  readWriteTiming.FSMC_DataSetupTime = 60; //数据保存时间为60个HCLK =6*60=360ns
  readWriteTiming.FSMC_BusTurnAroundDuration = 0x00;
  readWriteTiming.FSMC_CLKDivision = 0x00;
  readWriteTiming.FSMC_DataLatency = 0x00;
  readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A;    //模式A

writeTiming.FSMC_AddressSetupTime =9;       //地址建立时间（ADDSET）为9个HCLK =54ns
  writeTiming.FSMC_AddressHoldTime = 0x00;    //地址保持时间（A
  writeTiming.FSMC_DataSetupTime = 8;    //数据保存时间为6ns*9个HCLK=54ns
  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NE4 ，也就对应BTCR[6],[7]。
  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 [/mw_shl_code]），只能读取到0x4141，但是把硬件调整到匹配原子的代码，读取时没有问题的，麻烦指导一下，具体问题出在哪里。先谢谢了
[mw_shl_code=applescript,true]//FSMC SRAM类型存储器初始化结构体
FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure;

//FSMC 时序初始化结构
FSMC_NORSRAMTimingInitTypeDef pw,pr;

//GPIO 定义
/*
* FSMC_D0: PD14
* FSMC_D1: PD15
* FSMC_D2: PD0
* FSMC_D3: PD1
* FSMC_D4: PE7
* FSMC_D5: PE8
* FSMC_D6: PE9
* FSMC_D7: PE10
* FSMC_D8: PE11
* FSMC_D9: PE12
* FSMC_D10: PE13
* FSMC_D11: PE14
* FSMC_D12: PE15
* FSMC_D13: PD8
* FSMC_D14: PD9
* FSMC_D15: PD10
*
* FSMC_NOE: PD4 LCD_RD
* FSMC_NWE: PD5 LCD_RW
* FSMC_NE1: PG12 LCD_CS
* FSMC_A0: PF12 LCD_RS
* PF1 LCD_BACKLIGHT
*/
//GPIO初始化结构体
GPIO_InitTypeDef  GPIO_InitStructure;
//时钟使能
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD|RCC_AHB1Periph_GPIOE|RCC_AHB1Periph_GPIOF, ENABLE);
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FSMC,ENABLE); //使能FSMC时钟

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //PF0:命令数据控制线
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //输出模式
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //内部上拉

  GPIO_Init(GPIOF, &GPIO_InitStructure); //初始化

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1; //PF1 推挽输出,控制背光
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //输出模式

GPIO_Init(GPIOF, &GPIO_InitStructure); //初始化

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 |
GPIO_Pin_10 | GPIO_Pin_11 |
GPIO_Pin_12 | GPIO_Pin_13 |
GPIO_Pin_14 | GPIO_Pin_15; //PF0:命令数据控制线；PF1 推挽输出,控制背光
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //复用输出模式

GPIO_Init(GPIOE, &GPIO_InitStructure); //初始化

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 |
GPIO_Pin_4 | GPIO_Pin_5 |
GPIO_Pin_7 | GPIO_Pin_8 |
GPIO_Pin_9 | GPIO_Pin_10 |
GPIO_Pin_14 | GPIO_Pin_15; //PF0:命令数据控制线；PF1 推挽输出,控制背光
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //输出模式

GPIO_Init(GPIOD, &GPIO_InitStructure); //初始化
//复用功能映射
GPIO_PinAFConfig(GPIOD,GPIO_PinSource0,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource1,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource4,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource5,GPIO_AF_FSMC);
GPIO_PinAFConfig(GPIOD,GPIO_PinSource7,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource8,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource9,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource10,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource14,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOD,GPIO_PinSource15,GPIO_AF_FSMC);

  GPIO_PinAFConfig(GPIOE,GPIO_PinSource7,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource8,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource9,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource10,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource11,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource12,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource13,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource14,GPIO_AF_FSMC);
  GPIO_PinAFConfig(GPIOE,GPIO_PinSource15,GPIO_AF_FSMC);

  GPIO_PinAFConfig(GPIOF,GPIO_PinSource0,GPIO_AF_FSMC);

pw.FSMC_AddressSetupTime = 0x09; //地址建立时间
pw.FSMC_AddressHoldTime = 0x00; //地址保持时间
pw.FSMC_DataSetupTime = 0x08; //数据建立时间
pw.FSMC_BusTurnAroundDuration = 0x00; //总线恢复时间
pw.FSMC_CLKDivision = 0x00; //时钟分频
pw.FSMC_DataLatency = 0x00; //数据保持时间
pw.FSMC_AccessMode = FSMC_AccessMode_A; //模式

pr.FSMC_AddressSetupTime = 0x0f; //地址建立时间
pr.FSMC_AddressHoldTime = 0x00; //地址保持时间
pr.FSMC_DataSetupTime = 0x3c; //数据建立时间
pr.FSMC_BusTurnAroundDuration = 0x00; //总线恢复时间
pr.FSMC_CLKDivision = 0x00; //时钟分频
pr.FSMC_DataLatency = 0x00; //数据保持时间
pr.FSMC_AccessMode = FSMC_AccessMode_A; //模式

FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1; //选择NOR/SRAM所在的块1
FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; //数据线与地址线不复用
FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM; //存储器类型选择NOR FLASH
FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b; //数据总线宽度为16bit
FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable; //使用异步写入模式
FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; //只在突发模式下有效
FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait = FSMC_AsynchronousWait_Disable;
FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; //禁止非对齐突发模式
FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState; //只在突发模式下有效
FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable; //只在突发模式下有效
FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable; //禁止突发写操作
FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; //使能写操作
FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; //禁止扩展操作
FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = ≺ //配置读写时序
FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &pw; //配置写时序

FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); //初始化FSMC

FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1,ENABLE); //使能FSMC块1[/mw_shl_code]

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2条回答

kmust

2019-07-20 19:45

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