fsl_edma.h File Reference

Data Structures
struct	_edma_config
	eDMA global configuration structure. More...
struct	_edma_transfer_config
	eDMA transfer configuration More...
struct	_edma_channel_Preemption_config
	eDMA channel priority configuration More...
struct	_edma_minor_offset_config
	eDMA minor offset configuration More...
struct	_edma_tcd
	eDMA TCD. More...
struct	_edma_handle
	eDMA transfer handle structure More...

Functions
eDMA initialization and de-initialization
void	EDMA_Init (DMA_Type *base, const edma_config_t *config)
	Initializes the eDMA peripheral.
void	EDMA_Deinit (DMA_Type *base)
	Deinitializes the eDMA peripheral.
void	EDMA_InstallTCD (DMA_Type *base, uint32_t channel, edma_tcd_t *tcd)
	Push content of TCD structure into hardware TCD register.
void	EDMA_GetDefaultConfig (edma_config_t *config)
	Gets the eDMA default configuration structure.
eDMA Channel Operation
void	EDMA_ResetChannel (DMA_Type *base, uint32_t channel)
	Sets all TCD registers to default values.
void	EDMA_SetTransferConfig (DMA_Type *base, uint32_t channel, const edma_transfer_config_t *config, edma_tcd_t *nextTcd)
	Configures the eDMA transfer attribute.
void	EDMA_SetMinorOffsetConfig (DMA_Type *base, uint32_t channel, const edma_minor_offset_config_t *config)
	Configures the eDMA minor offset feature.
static void	EDMA_SetChannelPreemptionConfig (DMA_Type *base, uint32_t channel, const edma_channel_Preemption_config_t *config)
	Configures the eDMA channel preemption feature.
void	EDMA_SetChannelLink (DMA_Type *base, uint32_t channel, edma_channel_link_type_t type, uint32_t linkedChannel)
	Sets the channel link for the eDMA transfer.
void	EDMA_SetBandWidth (DMA_Type *base, uint32_t channel, edma_bandwidth_t bandWidth)
	Sets the bandwidth for the eDMA transfer.
void	EDMA_SetModulo (DMA_Type *base, uint32_t channel, edma_modulo_t srcModulo, edma_modulo_t destModulo)
	Sets the source modulo and the destination modulo for the eDMA transfer.
static void	EDMA_EnableAsyncRequest (DMA_Type *base, uint32_t channel, bool enable)
	Enables an async request for the eDMA transfer.
static void	EDMA_EnableAutoStopRequest (DMA_Type *base, uint32_t channel, bool enable)
	Enables an auto stop request for the eDMA transfer.
void	EDMA_EnableChannelInterrupts (DMA_Type *base, uint32_t channel, uint32_t mask)
	Enables the interrupt source for the eDMA transfer.
void	EDMA_DisableChannelInterrupts (DMA_Type *base, uint32_t channel, uint32_t mask)
	Disables the interrupt source for the eDMA transfer.
eDMA TCD Operation
void	EDMA_TcdReset (edma_tcd_t *tcd)
	Sets all fields to default values for the TCD structure.
void	EDMA_TcdSetTransferConfig (edma_tcd_t *tcd, const edma_transfer_config_t *config, edma_tcd_t *nextTcd)
	Configures the eDMA TCD transfer attribute.
void	EDMA_TcdSetMinorOffsetConfig (edma_tcd_t *tcd, const edma_minor_offset_config_t *config)
	Configures the eDMA TCD minor offset feature.
void	EDMA_TcdSetChannelLink (edma_tcd_t *tcd, edma_channel_link_type_t type, uint32_t linkedChannel)
	Sets the channel link for the eDMA TCD.
static void	EDMA_TcdSetBandWidth (edma_tcd_t *tcd, edma_bandwidth_t bandWidth)
	Sets the bandwidth for the eDMA TCD.
void	EDMA_TcdSetModulo (edma_tcd_t *tcd, edma_modulo_t srcModulo, edma_modulo_t destModulo)
	Sets the source modulo and the destination modulo for the eDMA TCD.
static void	EDMA_TcdEnableAutoStopRequest (edma_tcd_t *tcd, bool enable)
	Sets the auto stop request for the eDMA TCD.
void	EDMA_TcdEnableInterrupts (edma_tcd_t *tcd, uint32_t mask)
	Enables the interrupt source for the eDMA TCD.
void	EDMA_TcdDisableInterrupts (edma_tcd_t *tcd, uint32_t mask)
	Disables the interrupt source for the eDMA TCD.
eDMA Channel Transfer Operation
static void	EDMA_EnableChannelRequest (DMA_Type *base, uint32_t channel)
	Enables the eDMA hardware channel request.
static void	EDMA_DisableChannelRequest (DMA_Type *base, uint32_t channel)
	Disables the eDMA hardware channel request.
static void	EDMA_TriggerChannelStart (DMA_Type *base, uint32_t channel)
	Starts the eDMA transfer by using the software trigger.
eDMA Channel Status Operation
uint32_t	EDMA_GetRemainingMajorLoopCount (DMA_Type *base, uint32_t channel)
	Gets the remaining major loop count from the eDMA current channel TCD.
static uint32_t	EDMA_GetErrorStatusFlags (DMA_Type *base)
	Gets the eDMA channel error status flags.
uint32_t	EDMA_GetChannelStatusFlags (DMA_Type *base, uint32_t channel)
	Gets the eDMA channel status flags.
void	EDMA_ClearChannelStatusFlags (DMA_Type *base, uint32_t channel, uint32_t mask)
	Clears the eDMA channel status flags.
eDMA Transactional Operation
void	EDMA_CreateHandle (edma_handle_t *handle, DMA_Type *base, uint32_t channel)
	Creates the eDMA handle.
void	EDMA_InstallTCDMemory (edma_handle_t *handle, edma_tcd_t *tcdPool, uint32_t tcdSize)
	Installs the TCDs memory pool into the eDMA handle.
void	EDMA_SetCallback (edma_handle_t *handle, edma_callback callback, void *userData)
	Installs a callback function for the eDMA transfer.
void	EDMA_PrepareTransfer (edma_transfer_config_t *config, void *srcAddr, uint32_t srcWidth, void *destAddr, uint32_t destWidth, uint32_t bytesEachRequest, uint32_t transferBytes, edma_transfer_type_t type)
	Prepares the eDMA transfer structure.
status_t	EDMA_SubmitTransfer (edma_handle_t *handle, const edma_transfer_config_t *config)
	Submits the eDMA transfer request.
void	EDMA_StartTransfer (edma_handle_t *handle)
	eDMA starts transfer.
void	EDMA_StopTransfer (edma_handle_t *handle)
	eDMA stops transfer.
void	EDMA_AbortTransfer (edma_handle_t *handle)
	eDMA aborts transfer.
static uint32_t	EDMA_GetUnusedTCDNumber (edma_handle_t *handle)
	Get unused TCD slot number.
static uint32_t	EDMA_GetNextTCDAddress (edma_handle_t *handle)
	Get the next tcd address.
void	EDMA_HandleIRQ (edma_handle_t *handle)
	eDMA IRQ handler for the current major loop transfer completion.

Driver version
enum	_edma_transfer_size {   kEDMA_TransferSize1Bytes = 0x0U , kEDMA_TransferSize2Bytes = 0x1U , kEDMA_TransferSize4Bytes = 0x2U , kEDMA_TransferSize8Bytes = 0x3U ,   kEDMA_TransferSize16Bytes = 0x4U , kEDMA_TransferSize32Bytes = 0x5U }
	eDMA transfer configuration More...
enum	_edma_modulo {   kEDMA_ModuloDisable = 0x0U , kEDMA_Modulo2bytes , kEDMA_Modulo4bytes , kEDMA_Modulo8bytes ,   kEDMA_Modulo16bytes , kEDMA_Modulo32bytes , kEDMA_Modulo64bytes , kEDMA_Modulo128bytes ,   kEDMA_Modulo256bytes , kEDMA_Modulo512bytes , kEDMA_Modulo1Kbytes , kEDMA_Modulo2Kbytes ,   kEDMA_Modulo4Kbytes , kEDMA_Modulo8Kbytes , kEDMA_Modulo16Kbytes , kEDMA_Modulo32Kbytes ,   kEDMA_Modulo64Kbytes , kEDMA_Modulo128Kbytes , kEDMA_Modulo256Kbytes , kEDMA_Modulo512Kbytes ,   kEDMA_Modulo1Mbytes , kEDMA_Modulo2Mbytes , kEDMA_Modulo4Mbytes , kEDMA_Modulo8Mbytes ,   kEDMA_Modulo16Mbytes , kEDMA_Modulo32Mbytes , kEDMA_Modulo64Mbytes , kEDMA_Modulo128Mbytes ,   kEDMA_Modulo256Mbytes , kEDMA_Modulo512Mbytes , kEDMA_Modulo1Gbytes , kEDMA_Modulo2Gbytes }
	eDMA modulo configuration More...
enum	_edma_bandwidth { kEDMA_BandwidthStallNone = 0x0U , kEDMA_BandwidthStall4Cycle = 0x2U , kEDMA_BandwidthStall8Cycle = 0x3U }
	Bandwidth control. More...
enum	_edma_channel_link_type { kEDMA_LinkNone = 0x0U , kEDMA_MinorLink , kEDMA_MajorLink }
	Channel link type. More...
enum	_edma_channel_status_flags { kEDMA_DoneFlag = 0x1U , kEDMA_ErrorFlag = 0x2U , kEDMA_InterruptFlag = 0x4U }
	eDMA channel status flags. More...
enum	_edma_error_status_flags {   kEDMA_DestinationBusErrorFlag = DMA_ES_DBE_MASK , kEDMA_SourceBusErrorFlag = DMA_ES_SBE_MASK , kEDMA_ScatterGatherErrorFlag = DMA_ES_SGE_MASK , kEDMA_NbytesErrorFlag = DMA_ES_NCE_MASK ,   kEDMA_DestinationOffsetErrorFlag = DMA_ES_DOE_MASK , kEDMA_DestinationAddressErrorFlag = DMA_ES_DAE_MASK , kEDMA_SourceOffsetErrorFlag = DMA_ES_SOE_MASK , kEDMA_SourceAddressErrorFlag = DMA_ES_SAE_MASK ,   kEDMA_ErrorChannelFlag = DMA_ES_ERRCHN_MASK , kEDMA_ChannelPriorityErrorFlag = DMA_ES_CPE_MASK , kEDMA_TransferCanceledFlag = DMA_ES_ECX_MASK , kEDMA_GroupPriorityErrorFlag = DMA_ES_GPE_MASK ,   kEDMA_ValidFlag = (int)DMA_ES_VLD_MASK }
	eDMA channel error status flags. More...
enum	_edma_interrupt_enable { kEDMA_ErrorInterruptEnable = 0x1U , kEDMA_MajorInterruptEnable = DMA_CSR_INTMAJOR_MASK , kEDMA_HalfInterruptEnable = DMA_CSR_INTHALF_MASK }
	eDMA interrupt source More...
enum	_edma_transfer_type { kEDMA_MemoryToMemory = 0x0U , kEDMA_PeripheralToMemory , kEDMA_MemoryToPeripheral }
	eDMA transfer type More...
enum	_edma_transfer_status { kStatus_EDMA_QueueFull = MAKE_STATUS(kStatusGroup_EDMA, 0) , kStatus_EDMA_Busy = MAKE_STATUS(kStatusGroup_EDMA, 1) }
	eDMA transfer status More...
typedef enum _edma_transfer_size	edma_transfer_size_t
	eDMA transfer configuration
typedef enum _edma_modulo	edma_modulo_t
	eDMA modulo configuration
typedef enum _edma_bandwidth	edma_bandwidth_t
	Bandwidth control.
typedef enum _edma_channel_link_type	edma_channel_link_type_t
	Channel link type.
typedef enum _edma_interrupt_enable	edma_interrupt_enable_t
	eDMA interrupt source
typedef enum _edma_transfer_type	edma_transfer_type_t
	eDMA transfer type
typedef struct _edma_config	edma_config_t
	eDMA global configuration structure.
typedef struct _edma_transfer_config	edma_transfer_config_t
	eDMA transfer configuration
typedef struct _edma_channel_Preemption_config	edma_channel_Preemption_config_t
	eDMA channel priority configuration
typedef struct _edma_minor_offset_config	edma_minor_offset_config_t
	eDMA minor offset configuration
typedef struct _edma_tcd	edma_tcd_t
	eDMA TCD.
typedef void(*	edma_callback) (struct _edma_handle *handle, void *userData, bool transferDone, uint32_t tcds)
	Define callback function for eDMA.
typedef struct _edma_handle	edma_handle_t
	eDMA transfer handle structure

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