The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
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mbed 2
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Diff: TARGET_EFM32HG_STK3400/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h
- Revision:
- 156:ff21514d8981
- Child:
- 159:7130f322cb7e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_EFM32HG_STK3400/TARGET_Silicon_Labs/TARGET_EFM32/dma_api_HAL.h Wed Nov 08 17:18:06 2017 +0000 @@ -0,0 +1,99 @@ +/***************************************************************************//** + * @file dma_api_HAL.h + ******************************************************************************* + * @section License + * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> + ******************************************************************************* + * + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ******************************************************************************/ + +#ifndef MBED_DMA_API_HAL_H +#define MBED_DMA_API_HAL_H + +#include <stdint.h> +#include "dma_api.h" +#include "em_device.h" + +#ifdef DMA_PRESENT +#include "em_dma.h" +#endif + +#ifdef LDMA_PRESENT +#include "em_ldma.h" +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/* Purpose of this file: extend dma_api.h to include EFM-specific DMA attributes */ + +#define DMA_CAP_2DCOPY (1 << 0) +#define DMA_CAP_NONE (0 << 0) + +#if ( DMA_CHAN_COUNT <= 4 ) +#define DMACTRL_CH_CNT 4 +#define DMACTRL_ALIGNMENT 256 + +#elif ( ( DMA_CHAN_COUNT > 4 ) && ( DMA_CHAN_COUNT <= 8 ) ) +#define DMACTRL_CH_CNT 8 +#define DMACTRL_ALIGNMENT 256 + +#elif ( ( DMA_CHAN_COUNT > 8 ) && ( DMA_CHAN_COUNT <= 16 ) ) +#define DMACTRL_CH_CNT 16 +#define DMACTRL_ALIGNMENT 512 + +#else +#error "Unsupported DMA channel count (dma_api.c)." +#endif + +#ifdef LDMA_PRESENT +typedef void (*LDMAx_CBFunc_t)(unsigned int channel, bool primary, void *user); + +typedef struct +{ + LDMAx_CBFunc_t cbFunc; + void *userPtr; +} LDMAx_Callback_t; + +void LDMAx_StartTransfer( int ch, + LDMA_TransferCfg_t *transfer, + LDMA_Descriptor_t *descriptor, + LDMAx_CBFunc_t cbFunc, + void *userData ); +bool LDMAx_ChannelEnabled( int ch ); +#endif + +typedef struct { + DMAUsage dmaUsageState; + int dmaChannel; +#ifndef LDMA_PRESENT + DMA_CB_TypeDef dmaCallback; +#else + LDMAx_Callback_t dmaCallback; +#endif +} DMA_OPTIONS_t; + +typedef void (*DMACallback)(void); + +extern DMA_DESCRIPTOR_TypeDef dmaControlBlock[]; + +#ifdef __cplusplus +} +#endif + +#endif