Library Functions. More...

Functions
void	TM_DMA_Init (DMA_Stream_TypeDef Stream, DMA_HandleTypeDef HDMA)
	Initializes DMA stream. More...

void	TM_DMA_DeInit (DMA_Stream_TypeDef *Stream)
	Deinitializes DMA stream. More...

void	TM_DMA_Start (DMA_HandleTypeDef *hdma, uint32_t Source, uint32_t Destination, uint16_t Length)
	Starts DMA transmission for selected stream. More...

void	TM_DMA_ClearFlags (DMA_Stream_TypeDef *DMA_Stream)
	Clears all flags for selected DMA stream. More...

void	TM_DMA_ClearFlag (DMA_Stream_TypeDef *DMA_Stream, uint32_t flags)
	Clears selected DMA interrupt flag. More...

void	TM_DMA_EnableInterrupts (DMA_Stream_TypeDef *DMA_Stream)
	Enables interrupts for DMA stream. More...

void	TM_DMA_DisableInterrupts (DMA_Stream_TypeDef *DMA_Stream)
	Disables interrupts for DMA stream. More...

void	TM_DMA_TransferCompleteHandler (DMA_Stream_TypeDef *DMA_Stream)
	Transfer complete callback. More...

void	TM_DMA_HalfTransferCompleteHandler (DMA_Stream_TypeDef *DMA_Stream)
	Half transfer complete callback. More...

void	TM_DMA_TransferErrorHandler (DMA_Stream_TypeDef *DMA_Stream)
	Transfer error callback. More...

void	TM_DMA_DirectModeErrorHandler (DMA_Stream_TypeDef *DMA_Stream)
	Direct mode error callback. More...

void	TM_DMA_FIFOErrorHandler (DMA_Stream_TypeDef *DMA_Stream)
	FIFO error error callback. More...

Detailed Description

Library Functions.

Function Documentation

void TM_DMA_ClearFlag	(	DMA_Stream_TypeDef *	DMA_Stream,
		uint32_t	flags
	)

Clears selected DMA interrupt flag.

Parameters

*DMA_Stream	Pointer to DMA_Stream_TypeDef DMA stream where you want to clear flags
flags	Flag(s) which you wanna clear: DMA_FLAG_TCIF: Transfer complete interrupt flag DMA_FLAG HTIF: Half transfer complete interrupt flag DMA_FLAG_TEIF: Transfer error interrupt flag DMA_FLAG_DMEIF: Direct mode error interrupt flag DMA_FLAG_FEIF: FIFO error interrupt flag DMA_FLAG_ALL: All flags

Return values

None

void TM_DMA_ClearFlags ( DMA_Stream_TypeDef * DMA_Stream )

Clears all flags for selected DMA stream.

Parameters

*DMA_Stream Pointer to DMA_Stream_TypeDef DMA stream where you want to clear flags

Return values

None

void TM_DMA_DeInit ( DMA_Stream_TypeDef * Stream )

Deinitializes DMA stream.

Parameters

*DMA_Stream Pointer to DMA_Stream_TypeDef DMA stream to deinitialize

Return values

None

void TM_DMA_DirectModeErrorHandler ( DMA_Stream_TypeDef * DMA_Stream )

Direct mode error callback.

Note: This function is called when interrupt for specific stream happens for direct mode error

Parameters

*DMA_Stream Pointer to DMA stream where interrupt happens

Return values

None

Note: With __weak parameter to prevent link errors if not defined by user

void TM_DMA_DisableInterrupts ( DMA_Stream_TypeDef * DMA_Stream )

Disables interrupts for DMA stream.

Note: It adds IRQ to NVIC and enables all possible DMA STREAM interrupts

Parameters

*DMA_Stream Pointer to DMA stream where to disable interrupts

Return values

None

void TM_DMA_EnableInterrupts ( DMA_Stream_TypeDef * DMA_Stream )

Enables interrupts for DMA stream.

Note: It adds IRQ to NVIC and enables all possible DMA STREAM interrupts

Parameters

*DMA_Stream Pointer to DMA stream where to enable interrupts

Return values

None

void TM_DMA_FIFOErrorHandler ( DMA_Stream_TypeDef * DMA_Stream )

FIFO error error callback.

Note: This function is called when interrupt for specific stream happens for FIFO error

Parameters

*DMA_Stream Pointer to DMA stream where interrupt happens

Return values

None

Note: With __weak parameter to prevent link errors if not defined by user

void TM_DMA_HalfTransferCompleteHandler ( DMA_Stream_TypeDef * DMA_Stream )

Half transfer complete callback.

Note: This function is called when interrupt for specific stream happens for hal transfer complete

Parameters

*DMA_Stream Pointer to DMA stream where interrupt happens

Return values

None

Note: With __weak parameter to prevent link errors if not defined by user

void TM_DMA_Init	(	DMA_Stream_TypeDef *	Stream,
		DMA_HandleTypeDef *	HDMA
	)

Initializes DMA stream.

Parameters

*DMA_Stream	Pointer to DMA_Stream_TypeDef DMA stream to initialize
*HDMA	Pointer to DMA_HandleTypeDef structure with settings. When this parameter is set to null, only click will be enabled for desired stream for DMA

Return values

None

void TM_DMA_Start	(	DMA_HandleTypeDef *	hdma,
		uint32_t	Source,
		uint32_t	Destination,
		uint16_t	Length
	)

Starts DMA transmission for selected stream.

Parameters

*HDMA	Pointer to DMA_HandleTypeDef structure with settings where transmission will be started
Source	Source address from where data will be sent
Destination	Destination address where data will be sent
Length	Number of bytes to sent

Return values

None

void TM_DMA_TransferCompleteHandler ( DMA_Stream_TypeDef * DMA_Stream )

Transfer complete callback.

Note: This function is called when interrupt for specific stream happens for transfer complete; This function is called immediately after DMA transfers last element from memory to your peripheral if DMA is configured as M2P (Memory 2 Peripheral). When using for example USART, DMA will transfer last byte to USART peripheral register, but USART still has to do its job. It's important to know this fact, because you can get a lot of troubles, when for ex. you are working with RS485 and you have to control Enable pin for your transceiver.

Parameters

*DMA_Stream Pointer to DMA stream where interrupt happens

Return values

None

Note: With __weak parameter to prevent link errors if not defined by user

void TM_DMA_TransferErrorHandler ( DMA_Stream_TypeDef * DMA_Stream )

Transfer error callback.

Note: This function is called when interrupt for specific stream happens for transfer error

Parameters

*DMA_Stream Pointer to DMA stream where interrupt happens

Return values

None

Note: With __weak parameter to prevent link errors if not defined by user