Detailed Description

DMADRV API definition.

Version: 5.1.2

License

This file is licensed under the Silabs License Agreement. See the file "Silabs_License_Agreement.txt" for details. Before using this software for any purpose, you must agree to the terms of that agreement.

Definition in file dmadrv.h.

#include "em_device.h"
#include "ecode.h"
#include "em_dma.h"
#include "dmadrv_config.h"

Go to the source code of this file.

Macros
#define	DMADRV_MAX_XFER_COUNT ((int)((_DMA_CTRL_N_MINUS_1_MASK >> _DMA_CTRL_N_MINUS_1_SHIFT) + 1))
	Maximum length of one DMA transfer.

#define	ECODE_EMDRV_DMADRV_ALREADY_FREED ( ECODE_EMDRV_DMADRV_BASE \| 0x00000006 )
	DMA channel was free.

#define	ECODE_EMDRV_DMADRV_ALREADY_INITIALIZED ( ECODE_EMDRV_DMADRV_BASE \| 0x00000003 )
	DMA has already been initialized.

#define	ECODE_EMDRV_DMADRV_CH_NOT_ALLOCATED ( ECODE_EMDRV_DMADRV_BASE \| 0x00000007 )
	The channel is not reserved.

#define	ECODE_EMDRV_DMADRV_CHANNELS_EXHAUSTED ( ECODE_EMDRV_DMADRV_BASE \| 0x00000004 )
	No DMA channels available.

#define	ECODE_EMDRV_DMADRV_IN_USE ( ECODE_EMDRV_DMADRV_BASE \| 0x00000005 )
	DMA is in use.

#define	ECODE_EMDRV_DMADRV_NOT_INITIALIZED ( ECODE_EMDRV_DMADRV_BASE \| 0x00000002 )
	DMA is not initialized.

#define	ECODE_EMDRV_DMADRV_OK ( ECODE_OK )
	Success return value.

#define	ECODE_EMDRV_DMADRV_PARAM_ERROR ( ECODE_EMDRV_DMADRV_BASE \| 0x00000001 )
	Illegal input parameter.

#define	EMDRV_DMADRV_DMA_PRESENT

#define	EMDRV_DMADRV_UDMA

Typedefs
typedef bool(*	DMADRV_Callback_t) (unsigned int channel, unsigned int sequenceNo, void *userParam)
	DMADRV transfer completion callback function. More...

Enumerations
enum	DMADRV_Datasize_t { dmadrvDataSize1 = dmaDataSize1, dmadrvDataSize2 = dmaDataSize2, dmadrvDataSize4 = dmaDataSize4 }
	Data size of one UDMA transfer item. More...

enum	DMADRV_Peripheralsignal_t { dmadrvPeripheralSignal_NONE = 0, dmadrvPeripheralSignal_ADC0_SCAN = DMAREQ_ADC0_SCAN, dmadrvPeripheralSignal_ADC0_SINGLE = DMAREQ_ADC0_SINGLE, dmadrvPeripheralSignal_AES_DATARD = DMAREQ_AES_DATARD, dmadrvPeripheralSignal_AES_DATAWR = DMAREQ_AES_DATAWR, dmadrvPeripheralSignal_AES_KEYWR = DMAREQ_AES_KEYWR, dmadrvPeripheralSignal_AES_XORDATAWR = DMAREQ_AES_XORDATAWR, dmadrvPeripheralSignal_I2C0_RXDATAV = DMAREQ_I2C0_RXDATAV, dmadrvPeripheralSignal_I2C0_TXBL = DMAREQ_I2C0_TXBL, dmadrvPeripheralSignal_LEUART0_RXDATAV = DMAREQ_LEUART0_RXDATAV, dmadrvPeripheralSignal_LEUART0_TXBL = DMAREQ_LEUART0_TXBL, dmadrvPeripheralSignal_LEUART0_TXEMPTY = DMAREQ_LEUART0_TXEMPTY, dmadrvPeripheralSignal_MSC_WDATA = DMAREQ_MSC_WDATA, dmadrvPeripheralSignal_TIMER0_CC0 = DMAREQ_TIMER0_CC0, dmadrvPeripheralSignal_TIMER0_CC1 = DMAREQ_TIMER0_CC1, dmadrvPeripheralSignal_TIMER0_CC2 = DMAREQ_TIMER0_CC2, dmadrvPeripheralSignal_TIMER0_UFOF = DMAREQ_TIMER0_UFOF, dmadrvPeripheralSignal_TIMER1_CC0 = DMAREQ_TIMER1_CC0, dmadrvPeripheralSignal_TIMER1_CC1 = DMAREQ_TIMER1_CC1, dmadrvPeripheralSignal_TIMER1_CC2 = DMAREQ_TIMER1_CC2, dmadrvPeripheralSignal_TIMER1_UFOF = DMAREQ_TIMER1_UFOF, dmadrvPeripheralSignal_TIMER2_CC0 = DMAREQ_TIMER2_CC0, dmadrvPeripheralSignal_TIMER2_CC1 = DMAREQ_TIMER2_CC1, dmadrvPeripheralSignal_TIMER2_CC2 = DMAREQ_TIMER2_CC2, dmadrvPeripheralSignal_TIMER2_UFOF = DMAREQ_TIMER2_UFOF, dmadrvPeripheralSignal_USART0_RXDATAV = DMAREQ_USART0_RXDATAV, dmadrvPeripheralSignal_USART0_TXBL = DMAREQ_USART0_TXBL, dmadrvPeripheralSignal_USART0_TXEMPTY = DMAREQ_USART0_TXEMPTY, dmadrvPeripheralSignal_USART1_RXDATAV = DMAREQ_USART1_RXDATAV, dmadrvPeripheralSignal_USART1_RXDATAVRIGHT = DMAREQ_USART1_RXDATAVRIGHT, dmadrvPeripheralSignal_USART1_TXBL = DMAREQ_USART1_TXBL, dmadrvPeripheralSignal_USART1_TXBLRIGHT = DMAREQ_USART1_TXBLRIGHT, dmadrvPeripheralSignal_USART1_TXEMPTY = DMAREQ_USART1_TXEMPTY }
	Peripherals that can trigger UDMA transfers. More...

Functions
Ecode_t	DMADRV_AllocateChannel (unsigned int channelId, void capabilities)
	Allocate (reserve) a DMA channel. More...

Ecode_t	DMADRV_DeInit (void)
	Deinitialize DMADRV. More...

Ecode_t	DMADRV_FreeChannel (unsigned int channelId)
	Free an allocate (reserved) DMA channel. More...

Ecode_t	DMADRV_Init (void)
	Initialize DMADRV. More...

Ecode_t	DMADRV_MemoryPeripheral (unsigned int channelId, DMADRV_PeripheralSignal_t peripheralSignal, void dst, void src, bool srcInc, int len, DMADRV_DataSize_t size, DMADRV_Callback_t callback, void *cbUserParam)
	Start a memory to peripheral DMA transfer. More...

Ecode_t	DMADRV_MemoryPeripheralPingPong (unsigned int channelId, DMADRV_PeripheralSignal_t peripheralSignal, void dst, void src0, void src1, bool srcInc, int len, DMADRV_DataSize_t size, DMADRV_Callback_t callback, void cbUserParam)
	Start a memory to peripheral ping-pong DMA transfer. More...

Ecode_t	DMADRV_PauseTransfer (unsigned int channelId)
	Pause an ongoing DMA transfer. More...

Ecode_t	DMADRV_PeripheralMemory (unsigned int channelId, DMADRV_PeripheralSignal_t peripheralSignal, void dst, void src, bool dstInc, int len, DMADRV_DataSize_t size, DMADRV_Callback_t callback, void *cbUserParam)
	Start a peripheral to memory DMA transfer. More...

Ecode_t	DMADRV_PeripheralMemoryPingPong (unsigned int channelId, DMADRV_PeripheralSignal_t peripheralSignal, void dst0, void dst1, void src, bool dstInc, int len, DMADRV_DataSize_t size, DMADRV_Callback_t callback, void cbUserParam)
	Start a peripheral to memory ping-pong DMA transfer. More...

Ecode_t	DMADRV_ResumeTransfer (unsigned int channelId)
	Resume an ongoing DMA transfer. More...

Ecode_t	DMADRV_StopTransfer (unsigned int channelId)
	Stop an ongoing DMA transfer. More...

Ecode_t	DMADRV_TransferActive (unsigned int channelId, bool *active)
	Check if a transfer is running. More...

Ecode_t	DMADRV_TransferCompletePending (unsigned int channelId, bool *pending)
	Check if a transfer complete is pending. More...

Ecode_t	DMADRV_TransferDone (unsigned int channelId, bool *done)
	Check if a transfer has completed. More...

Ecode_t	DMADRV_TransferRemainingCount (unsigned int channelId, int *remaining)
	Get number of items remaining in a transfer. More...

Detailed Description

License

Macros

Typedefs

Enumerations

Functions