求大神指导fsmc通信问题！

OblivioLcJzc · 发表于 2018-10-23 17:05:17

本帖最后由 OblivioLcJzc 于 2018-10-23 19:29 编辑

两块32f103zet6开发板想用fsmc通信，一边是dma把16位的数组搬到fsmc总线上，另一边dma把fsmc总线上的数据搬到内存数组，但是主机发出的数据高8位全是1，低8位是正常的。从机接收的高8位全是0，低8位正常！而且数组数据顺序全乱了！求大神指导！以下是发送端DMA配置：
void MYDMA_Config(DMA_Channel_TypeDef* DMA_CHx,u32 cpar,u32 cmar,u16 cndtr,u32 dir)
{
      RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);       //使能DMA传输

  DMA_DeInit(DMA_CHx); //将DMA的通道1寄存器重设为缺省值

      DMA1_MEM_LEN=cndtr;
      DMA_InitStructure.DMA_PeripheralBaseAddr = cpar;  //DMA外设基地址
      DMA_InitStructure.DMA_MemoryBaseAddr = cmar;  //DMA内存基地址
      DMA_InitStructure.DMA_DIR = dir ;  //数据传输方向，从内存读取发送到外设
      DMA_InitStructure.DMA_BufferSize = cndtr;  //DMA通道的DMA缓存的大小
      DMA_InitStructure.DMA_PeripheralInc =DMA_PeripheralInc_Disable;  //外设地址寄存器不变
      DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;  //内存地址寄存器递增
      DMA_InitStructure.DMA_PeripheralDataSize = DMA_MemoryDataSize_HalfWord;  //数据宽度为16位
      DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord; //数据宽度为16位
      DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;  //工作在正常缓存模式
      DMA_InitStructure.DMA_Priority = DMA_Priority_High ; //DMA通道 x拥有中优先级
      DMA_InitStructure.DMA_M2M = DMA_M2M_Enable;  //DMA通道x没有设置为内存到内存传输
      DMA_Init(DMA_CHx, &DMA_InitStructure);
}

fsmc我用的是原子TFTLCD实验程序，两块板子fsmc配置一样
readWriteTiming.FSMC_AddressSetupTime = 0x00;       //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;                //

  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_NORSRAM4;//  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_NORSRAM4, ENABLE);  // 使能BANK1

主函数
  u16 SPI_TXBUFFER[6]={128,1000,500,600,700,1255};
  u16 SPI_RXBUFFER[6];
  #define LCD_BASE       ((u32)(0x6C000000 | 0x000007FE))
  #define LCD                ((LCD_TypeDef *) LCD_BASE)

int main(void)
{
      delay_init();                   //延时函数初始化
      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);       //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
      uart_init(115200);                //串口初始化为115200
      LED_Init();                            //LED端口初始化
      LCD_Init();//
      MYDMA_Config(DMA1_Channel3,(u32)LCD ,(u32)SPI_TXBUFFER,6,DMA_DIR_PeripheralDST);
   // MYDMA_Config(DMA1_Channel3,(u32)LCD ,(u32)SPI_RXBUFFER,6,DMA_DIR_PeripheralSRC);接收dma，
      MYDMA_Enable(DMA1_Channel3);
   while（1）；
}