dmadrv.h File Reference
DMADRV API definition.
- Version
- 5.5.0
License
(C) Copyright 2014 Silicon Labs, www.silabs.com
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"
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) |
A 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) |
A 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) |
A successful return value. | |
#define | ECODE_EMDRV_DMADRV_PARAM_ERROR (ECODE_EMDRV_DMADRV_BASE | 0x00000001) |
An 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. | |
Functions | |
Ecode_t | DMADRV_AllocateChannel (unsigned int *channelId, void *capabilities) |
Allocate (reserve) a DMA channel. | |
Ecode_t | DMADRV_DeInit (void) |
Deinitialize DMADRV. | |
Ecode_t | DMADRV_FreeChannel (unsigned int channelId) |
Free an allocated (reserved) DMA channel. | |
Ecode_t | DMADRV_Init (void) |
Initialize DMADRV. | |
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 a peripheral DMA transfer. | |
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 a peripheral ping-pong DMA transfer. | |
Ecode_t | DMADRV_PauseTransfer (unsigned int channelId) |
Pause an ongoing DMA transfer. | |
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. | |
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. | |
Ecode_t | DMADRV_ResumeTransfer (unsigned int channelId) |
Resume an ongoing DMA transfer. | |
Ecode_t | DMADRV_StopTransfer (unsigned int channelId) |
Stop an ongoing DMA transfer. | |
Ecode_t | DMADRV_TransferActive (unsigned int channelId, bool *active) |
Check if a transfer is running. | |
Ecode_t | DMADRV_TransferCompletePending (unsigned int channelId, bool *pending) |
Check if a transfer complete is pending. | |
Ecode_t | DMADRV_TransferDone (unsigned int channelId, bool *done) |
Check if a transfer has completed. | |
Ecode_t | DMADRV_TransferRemainingCount (unsigned int channelId, int *remaining) |
Get number of items remaining in a transfer. | |