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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[270] | 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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