[STM32U5] STM32U575板子DMA的问题

#define MAXIUM_DMA_BLOCK_SIZE  ( 65536-4 )

typedef struct{

  uint32_t BR1; //数据量

  uint32_t DAR; //填充仅需要更新目标地址

  uint32_t DSR; //填充仅需要更新目标地址

  uint32_t LLR; //数据链

}tDMA_LLS;



/*******链表结构必须在同一个64K区域*******/

tDMA_LLS DMA_MEM_LLS[MAX_LLS_ARRAY_NUM] @0x20000000 ;



void DmaCopyHalfWordBlock (uint32_t bytes, uint16_t * dst ,uint16_t *src)

{

  

  DMA_MEM_CH->CTR1 = DMA_CTR1_SAP|DMA_CTR1_DINC|DMA_CTR1_SINC|\

    (DMA_DEST_DATAWIDTH_HALFWORD)|(DMA_DEST_DATAWIDTH_HALFWORD);

  DMA_MEM_CH ->CTR2 = DMA_REQUEST_SW|DMA_BREQ_BLOCK|DMA_TCEM_EACH_LL_ITEM_TRANSFER;    //使用软件 DMA请求

  DMA_MEM_CH ->CSAR = (uint32_t)(uint64_t)src;

  DMA_MEM_CH ->CDAR = (uint32_t)(uint64_t)dst;



  if( bytes <=MAXIUM_DMA_BLOCK_SIZE ){

    DMA_MEM_CH ->CBR1 = bytes ;

  }

  else{

    DMA_MEM_CH ->CBR1 = MAXIUM_DMA_BLOCK_SIZE;

    uint32_t lls = DMA_CLLR_UB1|DMA_CLLR_UDA|DMA_CLLR_USA|DMA_CLLR_ULL;

    uint32_t base = (uint32_t )(uint64_t)DMA_MEM_LLS;

    DMA_MEM_CH ->CLLR = lls|(uint16_t)base;

    DMA_MEM_CH ->CLBAR = (uint32_t)base&0xffff0000; //MSB,LLS BASE

    DMA_LLS_Config ( DMA_MEM_LLS,\

      bytes - MAXIUM_DMA_BLOCK_SIZE,\

        (uint32_t)(uint64_t)dst+MAXIUM_DMA_BLOCK_SIZE,  (uint32_t)(uint64_t)src+MAXIUM_DMA_BLOCK_SIZE,lls);

  }

  //启动传输

  DMA_MEM_CH ->CCR  = DMA_CCR_EN;

}



/****************************************

填充一片区域,超出65535需要使用动态链表

size 是 uint32_t 的数量，按照字节数计算一个传输链

不得超出16383*4 字节

***********************************************/

static void DMA_LLS_Config ( tDMA_LLS *plls,uint32_t bytes,uint32_t dar, uint32_t sar, uint32_t lls)

{

  uint8_t max = (bytes +MAXIUM_DMA_BLOCK_SIZE-1)/MAXIUM_DMA_BLOCK_SIZE-1;

  uint8_t i =0;

  for (;i<max;i++){

    plls[i].DAR = dar +i*(MAXIUM_DMA_BLOCK_SIZE);

    plls[i].SAR = sar +i*(MAXIUM_DMA_BLOCK_SIZE);

    plls[i].BR1 = MAXIUM_DMA_BLOCK_SIZE;   //当前传输数量

    plls[i].LLR = lls|(uint16_t)(uint64_t)&plls[i+1];//指向下一个链表的低16位

  }

  plls[i].DAR = dar +i*(MAXIUM_DMA_BLOCK_SIZE); //新内存地址

  plls[i].SAR = sar +i*(MAXIUM_DMA_BLOCK_SIZE); //新内存地址

  plls[i].BR1 = bytes % MAXIUM_DMA_BLOCK_SIZE; //剩余数据量

  plls[i].LLR = 0;  //表示链表结束

}

  handle_GPDMA1_Channel10.Instance = GPDMA1_Channel10;

  handle_GPDMA1_Channel10.Init.Request = DMA_REQUEST_SW;

  handle_GPDMA1_Channel10.Init.BlkHWRequest = DMA_BREQ_SINGLE_BURST;

  handle_GPDMA1_Channel10.Init.Direction = DMA_MEMORY_TO_MEMORY;

  handle_GPDMA1_Channel10.Init.SrcInc = DMA_SINC_FIXED;

  handle_GPDMA1_Channel10.Init.DestInc = DMA_DINC_FIXED;

  handle_GPDMA1_Channel10.Init.SrcDataWidth = DMA_SRC_DATAWIDTH_BYTE;

  handle_GPDMA1_Channel10.Init.DestDataWidth = DMA_DEST_DATAWIDTH_BYTE;

  handle_GPDMA1_Channel10.Init.Priority = DMA_LOW_PRIORITY_LOW_WEIGHT;

  handle_GPDMA1_Channel10.Init.SrcBurstLength = 1;

  handle_GPDMA1_Channel10.Init.DestBurstLength = 1;

  handle_GPDMA1_Channel10.Init.TransferAllocatedPort = DMA_SRC_ALLOCATED_PORT0|DMA_DEST_ALLOCATED_PORT0;

  handle_GPDMA1_Channel10.Init.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;

  handle_GPDMA1_Channel10.Init.Mode = DMA_NORMAL;

  if (HAL_DMA_Init(&handle_GPDMA1_Channel10) != HAL_OK)

  {

   // Error_Handler();

  }

  if (HAL_DMA_ConfigChannelAttributes(&handle_GPDMA1_Channel10, DMA_CHANNEL_NPRIV) != HAL_OK)

  {

 //    Error_Handler();

  }

 handle_GPDMA1_Channel0.Instance = GPDMA1_Channel0;

  handle_GPDMA1_Channel0.Init.Request = DMA_REQUEST_SW;

  handle_GPDMA1_Channel0.Init.BlkHWRequest = DMA_BREQ_SINGLE_BURST;

  handle_GPDMA1_Channel0.Init.Direction = DMA_MEMORY_TO_MEMORY;

  handle_GPDMA1_Channel0.Init.SrcInc = DMA_SINC_INCREMENTED;

  handle_GPDMA1_Channel0.Init.DestInc = DMA_DINC_INCREMENTED;

  handle_GPDMA1_Channel0.Init.SrcDataWidth = DMA_SRC_DATAWIDTH_BYTE;

  handle_GPDMA1_Channel0.Init.DestDataWidth = DMA_DEST_DATAWIDTH_BYTE;

  handle_GPDMA1_Channel0.Init.Priority = DMA_LOW_PRIORITY_LOW_WEIGHT;

  handle_GPDMA1_Channel0.Init.SrcBurstLength = 1;

  handle_GPDMA1_Channel0.Init.DestBurstLength = 1;

  handle_GPDMA1_Channel0.Init.TransferAllocatedPort = DMA_SRC_ALLOCATED_PORT0|DMA_DEST_ALLOCATED_PORT0;

  handle_GPDMA1_Channel0.Init.TransferEventMode = DMA_TCEM_BLOCK_TRANSFER;

  handle_GPDMA1_Channel0.Init.Mode = DMA_NORMAL;

  if (HAL_DMA_Init(&handle_GPDMA1_Channel0) != HAL_OK)

  {

    //Error_Handler();

  }

  if (HAL_DMA_ConfigChannelAttributes(&handle_GPDMA1_Channel0, DMA_CHANNEL_NPRIV) != HAL_OK)

  {

    //Error_Handler();

  }