ST STM32F2 User Manual

HAL DMA Generic Driver
UM1940
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DocID028236 Rev 2
15.2.4 State and Errors functions
This subsection provides functions allowing to
Check the DMA state
Get error code
This section contains the following APIs:
HAL_DMA_GetState()
HAL_DMA_GetError()
15.2.5 Detailed description of functions
HAL_DMA_Init
Function name
HAL_StatusTypeDef HAL_DMA_Init (DMA_HandleTypeDef *
hdma)
Function description
Initialize the DMA according to the specified parameters in the
DMA_InitTypeDef and create the associated handle.
Parameters
hdma: Pointer to a DMA_HandleTypeDef structure that
contains the configuration information for the specified DMA
Stream.
Return values
HAL: status
HAL_DMA_DeInit
Function name
HAL_StatusTypeDef HAL_DMA_DeInit (DMA_HandleTypeDef *
hdma)
Function description
DeInitializes the DMA peripheral.
Parameters
hdma: pointer to a DMA_HandleTypeDef structure that
contains the configuration information for the specified DMA
Stream.
Return values
HAL: status
HAL_DMA_Start
Function name
HAL_StatusTypeDef HAL_DMA_Start (DMA_HandleTypeDef *
hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t
DataLength)
Function description
Starts the DMA Transfer.
Parameters
hdma: : pointer to a DMA_HandleTypeDef structure that
contains the configuration information for the specified DMA
Stream.
SrcAddress: The source memory Buffer address
DstAddress: The destination memory Buffer address
DataLength: The length of data to be transferred from
source to destination
Return values
HAL: status

ST STM32F2 Specifications

General

Brand	ST
Model	STM32F2
Category	Microcontrollers
Language	English