typedef struct
{
uint32_t DMA_Channel; /*!< Specifies the channel used for the specified stream.
This parameter can be a value of @ref DMA_channel */
uint32_t DMA_PeripheralBaseAddr; /*!< Specifies the peripheral base address for DMAy Streamx. */
uint32_t DMA_Memory0BaseAddr; /*!< Specifies the memory 0 base address for DMAy Streamx.
This memory is the default memory used when double buffer mode is
not enabled. */
uint32_t DMA_DIR; /*!< Specifies if the data will be transferred from memory to peripheral,
from memory to memory or from peripheral to memory.
This parameter can be a value of @ref DMA_data_transfer_direction */
uint32_t DMA_BufferSize; /*!< Specifies the buffer size, in data unit, of the specified Stream.
The data unit is equal to the configuration set in DMA_PeripheralDataSize
or DMA_MemoryDataSize members depending in the transfer direction. */
uint32_t DMA_PeripheralInc; /*!< Specifies whether the Peripheral address register should be incremented or not.
This parameter can be a value of @ref DMA_peripheral_incremented_mode */
uint32_t DMA_MemoryInc; /*!< Specifies whether the memory address register should be incremented or not.
This parameter can be a value of @ref DMA_memory_incremented_mode */
uint32_t DMA_PeripheralDataSize; /*!< Specifies the Peripheral data width.
This parameter can be a value of @ref DMA_peripheral_data_size */
uint32_t DMA_MemoryDataSize; /*!< Specifies the Memory data width.
This parameter can be a value of @ref DMA_memory_data_size */
uint32_t DMA_Mode; /*!< Specifies the operation mode of the DMAy Streamx.
This parameter can be a value of @ref DMA_circular_normal_mode
@note The circular buffer mode cannot be used if the memory-to-memory
data transfer is configured on the selected Stream */
uint32_t DMA_Priority; /*!< Specifies the software priority for the DMAy Streamx.
This parameter can be a value of @ref DMA_priority_level */
uint32_t DMA_FIFOMode; /*!< Specifies if the FIFO mode or Direct mode will be used for the specified Stream.
This parameter can be a value of @ref DMA_fifo_direct_mode
@note The Direct mode (FIFO mode disabled) cannot be used if the
memory-to-memory data transfer is configured on the selected Stream */
uint32_t DMA_FIFOThreshold; /*!< Specifies the FIFO threshold level.
This parameter can be a value of @ref DMA_fifo_threshold_level */
uint32_t DMA_MemoryBurst; /*!< Specifies the Burst transfer configuration for the memory transfers.
It specifies the amount of data to be transferred in a single non interruptable
transaction. This parameter can be a value of @ref DMA_memory_burst
@note The burst mode is possible only if the address Increment mode is enabled. */
uint32_t DMA_PeripheralBurst; /*!< Specifies the Burst transfer configuration for the peripheral transfers.
It specifies the amount of data to be transferred in a single non interruptable
transaction. This parameter can be a value of @ref DMA_peripheral_burst
@note The burst mode is possible only if the address Increment mode is enabled. */
}DMA_InitTypeDef;
谁能重点解释下倒数5个的成员变量置成不同的值时的DMA对应的转换的反应吗？比如那个Circul的模式是指的啥循环，还有那个FIFO指的是那个转换数据的先入先出？ |
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