source: EcnlProtoTool/trunk/asp3_dcre/mbed/hal/dma_api.h@ 439

Last change on this file since 439 was 429, checked in by coas-nagasima, 4 years ago

ASP3, TINET, mbed を更新

  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-chdr;charset=UTF-8
File size: 1.1 KB
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1
2/** \addtogroup hal */
3/** @{*/
4/* mbed Microcontroller Library
5 * Copyright (c) 2014-2015 ARM Limited
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 */
19#ifndef MBED_DMA_API_H
20#define MBED_DMA_API_H
21
22#include <stdint.h>
23
24#define DMA_ERROR_OUT_OF_CHANNELS (-1)
25
26typedef enum {
27 DMA_USAGE_NEVER,
28 DMA_USAGE_OPPORTUNISTIC,
29 DMA_USAGE_ALWAYS,
30 DMA_USAGE_TEMPORARY_ALLOCATED,
31 DMA_USAGE_ALLOCATED
32} DMAUsage;
33
34#ifdef __cplusplus
35extern "C" {
36#endif
37
38void dma_init(void);
39
40int dma_channel_allocate(uint32_t capabilities);
41
42int dma_channel_free(int channelid);
43
44#ifdef __cplusplus
45}
46#endif
47
48#endif
49
50/** @}*/
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