Last change
on this file since 286 was 270, checked in by coas-nagasima, 7 years ago |
mruby版ECNLプロトタイピング・ツールを追加
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1 | /* mbed Microcontroller Library
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2 | * Copyright (c) 2014-2015 ARM Limited
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | */
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16 | #ifndef MBED_DMA_API_H
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17 | #define MBED_DMA_API_H
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18 |
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19 | #include <stdint.h>
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20 |
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21 | #define DMA_ERROR_OUT_OF_CHANNELS (-1)
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22 |
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23 | typedef enum {
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24 | DMA_USAGE_NEVER,
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25 | DMA_USAGE_OPPORTUNISTIC,
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26 | DMA_USAGE_ALWAYS,
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27 | DMA_USAGE_TEMPORARY_ALLOCATED,
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28 | DMA_USAGE_ALLOCATED
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29 | } DMAUsage;
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30 |
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31 | #ifdef __cplusplus
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32 | extern "C" {
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33 | #endif
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34 |
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35 | void dma_init(void);
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36 |
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37 | int dma_channel_allocate(uint32_t capabilities);
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38 |
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39 | int dma_channel_free(int channelid);
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40 |
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41 | #ifdef __cplusplus
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42 | }
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43 | #endif
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44 |
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45 | #endif
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