最近在用RT-thread开发FMSC驱动TFT,碰到非常非常奇怪问题！！

发布于 2012-09-19 17:07:25 浏览：3150 订阅该版

5 个回答

aozima 2012-09-19

调网络不抓包，调I2C等时序不上逻辑分析仪，就像电工不用万用表！多用整理的好的文字，比截图更省流量，还能在整理过程中思考。

njgwx 2012-09-19

这家伙很懒，什么也没写！

没跑系统时正常没报错，带上RT-thread就不时报错，多加一条语句就会出现，我怀疑是ALIGN(RT_ALIGN_SIZE)造成的，跟初始化没关系。
附FMSC初始化代码：

```
void LCD_CtrlLinesConfig(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

/* Enable FSMC, GPIOD, GPIOE, GPIOF, GPIOG and AFIO clocks */

RCC_APB2PeriphClockCmd(//RCC_APB2Periph_GPIOB |//SDHC 
                         RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE |                         
                         RCC_APB2Periph_AFIO, ENABLE);

/* Set PD.00(D2), PD.01(D3), PD.04(NOE), PD.05(NWE), PD.08(D13), PD.09(D14),
     PD.10(D15), PD.14(D0), PD.15(D1) as alternate 
     function push pull */
  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_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

/* Set PE.07(D4), PE.08(D5), PE.09(D6), PE.10(D7), PE.11(D8), PE.12(D9), PE.13(D10),
     PE.14(D11), PE.15(D12) as alternate function push pull */
  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_Init(GPIOE, &GPIO_InitStructure);

// GPIO_WriteBit(GPIOE, GPIO_Pin_6, Bit_SET);
  /* Set PF.00(A0 (RS)) as alternate function push pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

/* Set PG.12(NE4 (LCD/CS)) as alternate function push pull - CE1(LCD /CS) */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
  GPIO_Init(GPIOD, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : LCD_FSMCConfig
* Description    : Configures the Parallel interface (FSMC) for LCD(Parallel mode)
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void LCD_FSMCConfig(void)
{
  FSMC_NORSRAMInitTypeDef  FSMC_NORSRAMInitStructure;
  FSMC_NORSRAMTimingInitTypeDef  p;

/*-- FSMC Configuration ------------------------------------------------------*/
/*----------------------- SRAM Bank 4 ----------------------------------------*/
  /* FSMC_Bank1_NORSRAM4 configuration */
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
  p.FSMC_AddressSetupTime = 1;         //ADDSET  地址建立时间
  p.FSMC_AddressHoldTime = 0;          //ADDHOLD 地址保持时间
  p.FSMC_DataSetupTime = 2;             //DATAST 数据建立时间
  p.FSMC_BusTurnAroundDuration = 0;      //BUSTURN 总线返转时间 
  p.FSMC_CLKDivision = 0;                 //CLKDIV 时钟分频
  p.FSMC_DataLatency = 0;                //DATLAT 数据保持时间

/* Color LCD configuration ------------------------------------
     LCD configured as follow:
        - Data/Address MUX = Disable
        - Memory Type = SRAM
        - Data Width = 16bit
        - Write Operation = Enable
        - Extended Mode = Enable
        - Asynchronous Wait = Disable */
  
    
  p.FSMC_AccessMode = FSMC_AccessMode_B;                     //ACCMOD FSMC 访问模式
  FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM1;   //扩展nor bank的第4个bank
  FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable;    //不使用总线复用
  FSMC_NORSRAMInitStructure.FSMC_MemoryType = FSMC_MemoryType_SRAM;              //扩展类型
  ///*
  FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;     //数据宽度
  FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode = FSMC_BurstAccessMode_Disable;  
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; //
  FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;
  FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable;
  FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;
  FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Disable;    //读写统一参数
  //FSMC_NORSRAMInitStructure.FSMC_AsyncWait = FSMC_AsyncWait_Disable;
  FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;
  FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &p;
  FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &p;
  //*/
  FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure);  
  /* BANK 4 (of NOR/SRAM Bank 1~4) is enabled */
  FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM1, ENABLE);
}
```