stm32f4FSMC控制AD7606采样用FT2232H上传到上位机，DMA传输存储器到存储器模式的设置问题

在在在肥皂剧 · 发表于 2017-11-28 17:39:09

void DMA_FSMC_AD7606_Configuration(void)
{
DMA_InitTypeDef DMA_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);

  DMA_Cmd(DMA2_Stream0, DISABLE);
  DMA_ClearFlag(FSMC_DMA_STREAM, FSMC_DMA_FLAG_FEIF | FSMC_DMA_FLAG_DMEIF | FSMC_DMA_FLAG_TEIF |
               FSMC_DMA_FLAG_HTIF | FSMC_DMA_FLAG_TCIF);

DMA_DeInit(DMA2_Stream0);
DMA_InitStructure.DMA_Channel=DMA_CHANNEL_1;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)AD7606_FT_Base;// AD7606_FT_FSMC
//DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)AD7606_CS0_Base;//ÔÚ StartOneDMATx_Configuration()º¯ÊýÀïÅäÖÃ
DMA_InitStructure.DMA_DIR =  DMA_DIR_MemoryToMemory;// DMA_DIR_MemoryToPeripheral
//DMA_InitStructure.DMA_BufferSize = 8;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;//;DMA_PeripheralInc_Enable
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_HalfWord ;//DMA_MemoryDataSize_HalfWord
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;//DMA_Mode_Normal;//ÔÚNormal Ä£Ê½ÏÂ£¬ÓëÆô¶¯ÏÂÒ»´Î´«Êä£¬Ôò
         //disable the DMA channel ,reload a new number into the DMA_SNDTRx
DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;//DMA_Priority_Low;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable ;//DMA_FIFOMode_Disable
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;             /* Memory burst                   */
  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
// DMA2_Stream7 -> FCR |= (DMA_SxFCR_DMDIS|DMA_SxFCR_FTH);
DMA_Init(DMA2_Stream0, &DMA_InitStructure);

void DMA_FSMC_FTUSB_Configuration(void)
{
DMA_InitTypeDef DMA_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);

  DMA_Cmd(DMA2_Stream7, DISABLE);
  DMA_ClearFlag(FSMC_DMA_STREAM, FSMC_DMA_FLAG_FEIF | FSMC_DMA_FLAG_DMEIF | FSMC_DMA_FLAG_TEIF |
               FSMC_DMA_FLAG_HTIF | FSMC_DMA_FLAG_TCIF);

DMA_DeInit(DMA2_Stream7);
DMA_InitStructure.DMA_Channel=DMA_CHANNEL_1;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)AD7606_FT_Base;// AD7606_FT_FSMC
//DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)AD7606_FT_Base;//ÔÚ StartOneDMATx_Configuration()º¯ÊýÀïÅäÖÃ
DMA_InitStructure.DMA_DIR =  DMA_DIR_MemoryToMemory;// DMA_DIR_MemoryToPeripheral
// DMA_InitStructure.DMA_BufferSize = 8;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Enable;//DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte ;//DMA_MemoryDataSize_HalfWord
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;//DMA_Mode_Normal;//ÔÚNormal Ä£Ê½ÏÂ£¬ÓëÆô¶¯ÏÂÒ»´Î´«Êä£¬Ôò
         //disable the DMA channel ,reload a new number into the DMA_SNDTRx
DMA_InitStructure.DMA_Priority = DMA_Priority_Low;//DMA_Priority_Low;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable ;//DMA_FIFOMode_Disable
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;             /* Memory burst                   */
  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
// DMA2_Stream7 -> FCR |= (DMA_SxFCR_DMDIS|DMA_SxFCR_FTH);
DMA_Init(DMA2_Stream7, &DMA_InitStructure);
}
存储器到存储器模式为什么外设地址都是设置的一样的

正点原子 · 发表于 2017-11-29 00:24:20

你这能用么？

在在在肥皂剧 · 发表于 2017-11-29 11:31:44

正点原子发表于 2017-11-29 00:24
你这能用么？

这个可以传数据，但是不理解为什么这样设置的

在在在肥皂剧 · 发表于 2017-11-29 11:34:04

正点原子发表于 2017-11-29 00:24
你这能用么？

他在中断里实现的
DMA2->LIFCR = DMA_LISR_TCIF0|DMA_LISR_HTIF0;
DMA2_Stream0 -> NDTR = 8 ; //
DMA2_Stream0 -> M0AR = (uint32_t)AD7606_FT_Base;//
DMA2_Stream0 -> PAR = (uint32_t)AD7606_CS0_Base;//