em_ldma.h File Reference

Detailed Description

Direct memory access (LDMA) API.

Version

5.1.2

License

Copyright 2016 Silicon Laboratories, Inc. http://www.silabs.com

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software.
   
2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
   
3. This notice may not be removed or altered from any source distribution.

DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no obligation to support this Software. Silicon Labs is providing the Software "AS IS", with no express or implied warranties of any kind, including, but not limited to, any implied warranties of merchantability or fitness for any particular purpose or warranties against infringement of any proprietary rights of a third party.

Silicon Labs will not be liable for any consequential, incidental, or special damages, or any other relief, or for any claim by any third party, arising from your use of this Software.

Definition in file em_ldma.h.

#include "em_device.h"
#include <stdbool.h>

Go to the source code of this file.

Data Structures
union	LDMA_Descriptor_t
	DMA descriptor. More...
struct	LDMA_Init_t
	LDMA initialization configuration structure. More...
struct	LDMA_TransferCfg_t
	DMA transfer configuration structure. More...

Macros
#define	LDMA_DESCRIPTOR_LINKABS_M2M_BYTE(src, dest, count)
	DMA descriptor initializer for linked memory to memory byte transfer. More...
#define	LDMA_DESCRIPTOR_LINKABS_M2M_HALF(src, dest, count)
	DMA descriptor initializer for linked memory to memory half-word transfer. More...
#define	LDMA_DESCRIPTOR_LINKABS_M2M_WORD(src, dest, count)
	DMA descriptor initializer for linked memory to memory word transfer. More...
#define	LDMA_DESCRIPTOR_LINKABS_SYNC(set, clr, matchValue, matchEnable)
	DMA descriptor initializer for SYNC transfer. More...
#define	LDMA_DESCRIPTOR_LINKABS_WRITE(value, address)
	DMA descriptor initializer for Immediate WRITE transfer. More...
#define	LDMA_DESCRIPTOR_LINKREL_M2M_BYTE(src, dest, count, linkjmp)
	DMA descriptor initializer for linked memory to memory byte transfer. More...
#define	LDMA_DESCRIPTOR_LINKREL_M2M_HALF(src, dest, count, linkjmp)
	DMA descriptor initializer for linked memory to memory half-word transfer. More...
#define	LDMA_DESCRIPTOR_LINKREL_M2M_WORD(src, dest, count, linkjmp)
	DMA descriptor initializer for linked memory to memory word transfer. More...
#define	LDMA_DESCRIPTOR_LINKREL_M2P_BYTE(src, dest, count, linkjmp)
	DMA descriptor initializer for byte transfers from memory to a peripheral. More...
#define	LDMA_DESCRIPTOR_LINKREL_P2M_BYTE(src, dest, count, linkjmp)
	DMA descriptor initializer for byte transfers from a peripheral to memory. More...
#define	LDMA_DESCRIPTOR_LINKREL_SYNC(set, clr, matchValue, matchEnable, linkjmp)
	DMA descriptor initializer for SYNC transfer. More...
#define	LDMA_DESCRIPTOR_LINKREL_WRITE(value, address, linkjmp)
	DMA descriptor initializer for Immediate WRITE transfer. More...
#define	LDMA_DESCRIPTOR_SINGLE_M2M_BYTE(src, dest, count)
	DMA descriptor initializer for single memory to memory byte transfer. More...
#define	LDMA_DESCRIPTOR_SINGLE_M2M_HALF(src, dest, count)
	DMA descriptor initializer for single memory to memory half-word transfer. More...
#define	LDMA_DESCRIPTOR_SINGLE_M2M_WORD(src, dest, count)
	DMA descriptor initializer for single memory to memory word transfer. More...
#define	LDMA_DESCRIPTOR_SINGLE_M2P_BYTE(src, dest, count)
	DMA descriptor initializer for byte transfers from memory to a peripheral. More...
#define	LDMA_DESCRIPTOR_SINGLE_P2M_BYTE(src, dest, count)
	DMA descriptor initializer for byte transfers from a peripheral to memory. More...
#define	LDMA_DESCRIPTOR_SINGLE_P2P_BYTE(src, dest, count)
	DMA descriptor initializer for byte transfers from a peripheral to a peripheral. More...
#define	LDMA_DESCRIPTOR_SINGLE_SYNC(set, clr, matchValue, matchEnable)
	DMA descriptor initializer for SYNC transfer. More...
#define	LDMA_DESCRIPTOR_SINGLE_WRITE(value, address)
	DMA descriptor initializer for Immediate WRITE transfer. More...
#define	LDMA_INIT_DEFAULT
	Default DMA initialization structure. More...
#define	LDMA_TRANSFER_CFG_MEMORY()
	Generic DMA transfer configuration for memory to memory transfers. More...
#define	LDMA_TRANSFER_CFG_MEMORY_LOOP(loopCnt)
	Generic DMA transfer configuration for looped memory to memory transfers. More...
#define	LDMA_TRANSFER_CFG_PERIPHERAL(signal)
	Generic DMA transfer configuration for memory to/from peripheral transfers. More...
#define	LDMA_TRANSFER_CFG_PERIPHERAL_LOOP(signal, loopCnt)
	Generic DMA transfer configuration for looped memory to/from peripheral transfers. More...

Enumerations
enum	LDMA_CfgArbSlots_t {   ldmaCfgArbSlotsAs1 = _LDMA_CH_CFG_ARBSLOTS_ONE,   ldmaCfgArbSlotsAs2 = _LDMA_CH_CFG_ARBSLOTS_TWO,   ldmaCfgArbSlotsAs4 = _LDMA_CH_CFG_ARBSLOTS_FOUR,   ldmaCfgArbSlotsAs8 = _LDMA_CH_CFG_ARBSLOTS_EIGHT }
enum	LDMA_CfgDstIncSign_t {   ldmaCfgDstIncSignPos = _LDMA_CH_CFG_DSTINCSIGN_POSITIVE,   ldmaCfgDstIncSignNeg = _LDMA_CH_CFG_DSTINCSIGN_NEGATIVE }
enum	LDMA_CfgSrcIncSign_t {   ldmaCfgSrcIncSignPos = _LDMA_CH_CFG_SRCINCSIGN_POSITIVE,   ldmaCfgSrcIncSignNeg = _LDMA_CH_CFG_SRCINCSIGN_NEGATIVE }
enum	LDMA_CtrlBlockSize_t {   ldmaCtrlBlockSizeUnit1 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT1,   ldmaCtrlBlockSizeUnit2 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT2,   ldmaCtrlBlockSizeUnit3 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT3,   ldmaCtrlBlockSizeUnit4 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT4,   ldmaCtrlBlockSizeUnit6 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT6,   ldmaCtrlBlockSizeUnit8 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT8,   ldmaCtrlBlockSizeUnit16 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT16,   ldmaCtrlBlockSizeUnit32 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT32,   ldmaCtrlBlockSizeUnit64 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT64,   ldmaCtrlBlockSizeUnit128 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT128,   ldmaCtrlBlockSizeUnit256 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT256,   ldmaCtrlBlockSizeUnit512 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT512,   ldmaCtrlBlockSizeUnit1024 = _LDMA_CH_CTRL_BLOCKSIZE_UNIT1024,   ldmaCtrlBlockSizeAll = _LDMA_CH_CTRL_BLOCKSIZE_ALL }
enum	LDMA_CtrlDstAddrMode_t {   ldmaCtrlDstAddrModeAbs = _LDMA_CH_CTRL_DSTMODE_ABSOLUTE,   ldmaCtrlDstAddrModeRel = _LDMA_CH_CTRL_DSTMODE_RELATIVE }
enum	LDMA_CtrlDstInc_t {   ldmaCtrlDstIncOne = _LDMA_CH_CTRL_DSTINC_ONE,   ldmaCtrlDstIncTwo = _LDMA_CH_CTRL_DSTINC_TWO,   ldmaCtrlDstIncFour = _LDMA_CH_CTRL_DSTINC_FOUR,   ldmaCtrlDstIncNone = _LDMA_CH_CTRL_DSTINC_NONE }
enum	LDMA_CtrlReqMode_t {   ldmaCtrlReqModeBlock = _LDMA_CH_CTRL_REQMODE_BLOCK,   ldmaCtrlReqModeAll = _LDMA_CH_CTRL_REQMODE_ALL }
enum	LDMA_CtrlSize_t {   ldmaCtrlSizeByte = _LDMA_CH_CTRL_SIZE_BYTE,   ldmaCtrlSizeHalf = _LDMA_CH_CTRL_SIZE_HALFWORD,   ldmaCtrlSizeWord = _LDMA_CH_CTRL_SIZE_WORD }
enum	LDMA_CtrlSrcAddrMode_t {   ldmaCtrlSrcAddrModeAbs = _LDMA_CH_CTRL_SRCMODE_ABSOLUTE,   ldmaCtrlSrcAddrModeRel = _LDMA_CH_CTRL_SRCMODE_RELATIVE }
enum	LDMA_CtrlSrcInc_t {   ldmaCtrlSrcIncOne = _LDMA_CH_CTRL_SRCINC_ONE,   ldmaCtrlSrcIncTwo = _LDMA_CH_CTRL_SRCINC_TWO,   ldmaCtrlSrcIncFour = _LDMA_CH_CTRL_SRCINC_FOUR,   ldmaCtrlSrcIncNone = _LDMA_CH_CTRL_SRCINC_NONE }
enum	LDMA_CtrlStructType_t {   ldmaCtrlStructTypeXfer = _LDMA_CH_CTRL_STRUCTTYPE_TRANSFER,   ldmaCtrlStructTypeSync = _LDMA_CH_CTRL_STRUCTTYPE_SYNCHRONIZE,   ldmaCtrlStructTypeWrite = _LDMA_CH_CTRL_STRUCTTYPE_WRITE }
enum	LDMA_LinkMode_t {   ldmaLinkModeAbs = _LDMA_CH_LINK_LINKMODE_ABSOLUTE,   ldmaLinkModeRel = _LDMA_CH_LINK_LINKMODE_RELATIVE }
enum	LDMA_PeripheralSignal_t {   ldmaPeripheralSignal_NONE = LDMA_CH_REQSEL_SOURCESEL_NONE,   ldmaPeripheralSignal_ADC0_SCAN = LDMA_CH_REQSEL_SIGSEL_ADC0SCAN | LDMA_CH_REQSEL_SOURCESEL_ADC0,   ldmaPeripheralSignal_ADC0_SINGLE = LDMA_CH_REQSEL_SIGSEL_ADC0SINGLE | LDMA_CH_REQSEL_SOURCESEL_ADC0,   ldmaPeripheralSignal_CRYPTO_DATA0RD = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0RD | LDMA_CH_REQSEL_SOURCESEL_CRYPTO,   ldmaPeripheralSignal_CRYPTO_DATA0WR = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0WR | LDMA_CH_REQSEL_SOURCESEL_CRYPTO,   ldmaPeripheralSignal_CRYPTO_DATA0XWR = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA0XWR | LDMA_CH_REQSEL_SOURCESEL_CRYPTO,   ldmaPeripheralSignal_CRYPTO_DATA1RD = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA1RD | LDMA_CH_REQSEL_SOURCESEL_CRYPTO,   ldmaPeripheralSignal_CRYPTO_DATA1WR = LDMA_CH_REQSEL_SIGSEL_CRYPTODATA1WR | LDMA_CH_REQSEL_SOURCESEL_CRYPTO,   ldmaPeripheralSignal_I2C0_RXDATAV = LDMA_CH_REQSEL_SIGSEL_I2C0RXDATAV | LDMA_CH_REQSEL_SOURCESEL_I2C0,   ldmaPeripheralSignal_I2C0_TXBL = LDMA_CH_REQSEL_SIGSEL_I2C0TXBL | LDMA_CH_REQSEL_SOURCESEL_I2C0,   ldmaPeripheralSignal_LEUART0_RXDATAV = LDMA_CH_REQSEL_SIGSEL_LEUART0RXDATAV | LDMA_CH_REQSEL_SOURCESEL_LEUART0,   ldmaPeripheralSignal_LEUART0_TXBL = LDMA_CH_REQSEL_SIGSEL_LEUART0TXBL | LDMA_CH_REQSEL_SOURCESEL_LEUART0,   ldmaPeripheralSignal_LEUART0_TXEMPTY = LDMA_CH_REQSEL_SIGSEL_LEUART0TXEMPTY | LDMA_CH_REQSEL_SOURCESEL_LEUART0,   ldmaPeripheralSignal_MSC_WDATA = LDMA_CH_REQSEL_SIGSEL_MSCWDATA | LDMA_CH_REQSEL_SOURCESEL_MSC,   ldmaPeripheralSignal_PRS_REQ0 = LDMA_CH_REQSEL_SIGSEL_PRSREQ0 | LDMA_CH_REQSEL_SOURCESEL_PRS,   ldmaPeripheralSignal_PRS_REQ1 = LDMA_CH_REQSEL_SIGSEL_PRSREQ1 | LDMA_CH_REQSEL_SOURCESEL_PRS,   ldmaPeripheralSignal_TIMER0_CC0 = LDMA_CH_REQSEL_SIGSEL_TIMER0CC0 | LDMA_CH_REQSEL_SOURCESEL_TIMER0,   ldmaPeripheralSignal_TIMER0_CC1 = LDMA_CH_REQSEL_SIGSEL_TIMER0CC1 | LDMA_CH_REQSEL_SOURCESEL_TIMER0,   ldmaPeripheralSignal_TIMER0_CC2 = LDMA_CH_REQSEL_SIGSEL_TIMER0CC2 | LDMA_CH_REQSEL_SOURCESEL_TIMER0,   ldmaPeripheralSignal_TIMER0_UFOF = LDMA_CH_REQSEL_SIGSEL_TIMER0UFOF | LDMA_CH_REQSEL_SOURCESEL_TIMER0,   ldmaPeripheralSignal_TIMER1_CC0 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC0 | LDMA_CH_REQSEL_SOURCESEL_TIMER1,   ldmaPeripheralSignal_TIMER1_CC1 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC1 | LDMA_CH_REQSEL_SOURCESEL_TIMER1,   ldmaPeripheralSignal_TIMER1_CC2 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC2 | LDMA_CH_REQSEL_SOURCESEL_TIMER1,   ldmaPeripheralSignal_TIMER1_CC3 = LDMA_CH_REQSEL_SIGSEL_TIMER1CC3 | LDMA_CH_REQSEL_SOURCESEL_TIMER1,   ldmaPeripheralSignal_TIMER1_UFOF = LDMA_CH_REQSEL_SIGSEL_TIMER1UFOF | LDMA_CH_REQSEL_SOURCESEL_TIMER1,   ldmaPeripheralSignal_USART0_RXDATAV = LDMA_CH_REQSEL_SIGSEL_USART0RXDATAV | LDMA_CH_REQSEL_SOURCESEL_USART0,   ldmaPeripheralSignal_USART0_TXBL = LDMA_CH_REQSEL_SIGSEL_USART0TXBL | LDMA_CH_REQSEL_SOURCESEL_USART0,   ldmaPeripheralSignal_USART0_TXEMPTY = LDMA_CH_REQSEL_SIGSEL_USART0TXEMPTY | LDMA_CH_REQSEL_SOURCESEL_USART0,   ldmaPeripheralSignal_USART1_RXDATAV = LDMA_CH_REQSEL_SIGSEL_USART1RXDATAV | LDMA_CH_REQSEL_SOURCESEL_USART1,   ldmaPeripheralSignal_USART1_RXDATAVRIGHT = LDMA_CH_REQSEL_SIGSEL_USART1RXDATAVRIGHT | LDMA_CH_REQSEL_SOURCESEL_USART1,   ldmaPeripheralSignal_USART1_TXBL = LDMA_CH_REQSEL_SIGSEL_USART1TXBL | LDMA_CH_REQSEL_SOURCESEL_USART1,   ldmaPeripheralSignal_USART1_TXBLRIGHT = LDMA_CH_REQSEL_SIGSEL_USART1TXBLRIGHT | LDMA_CH_REQSEL_SOURCESEL_USART1,   ldmaPeripheralSignal_USART1_TXEMPTY = LDMA_CH_REQSEL_SIGSEL_USART1TXEMPTY | LDMA_CH_REQSEL_SOURCESEL_USART1 }

Functions
void	LDMA_DeInit (void)
	De-initialize the LDMA controller. More...
void	LDMA_EnableChannelRequest (int ch, bool enable)
	Enable or disable a LDMA channel request. More...
void	LDMA_Init (const LDMA_Init_t *init)
	Initialize the LDMA controller. More...
__STATIC_INLINE void	LDMA_IntClear (uint32_t flags)
	Clear one or more pending LDMA interrupts. More...
__STATIC_INLINE void	LDMA_IntDisable (uint32_t flags)
	Disable one or more LDMA interrupts. More...
__STATIC_INLINE void	LDMA_IntEnable (uint32_t flags)
	Enable one or more LDMA interrupts. More...
__STATIC_INLINE uint32_t	LDMA_IntGet (void)
	Get pending LDMA interrupt flags. More...
__STATIC_INLINE uint32_t	LDMA_IntGetEnabled (void)
	Get enabled and pending LDMA interrupt flags. Useful for handling more interrupt sources in the same interrupt handler. More...
__STATIC_INLINE void	LDMA_IntSet (uint32_t flags)
	Set one or more pending LDMA interrupts. More...
void	LDMA_StartTransfer (int ch, const LDMA_TransferCfg_t *transfer, const LDMA_Descriptor_t *descriptor)
	Start a DMA transfer. More...
void	LDMA_StopTransfer (int ch)
	Stop a DMA transfer. More...
bool	LDMA_TransferDone (int ch)
	Check if a DMA transfer has completed. More...
uint32_t	LDMA_TransferRemainingCount (int ch)
	Get number of items remaining in a transfer. More...