mirror of https://github.com/ARMmbed/mbed-os.git
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
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/** \addtogroup hal */
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/** @{*/
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/* mbed Microcontroller Library
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* Copyright (c) 2014-2015 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBED_DMA_API_H
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#define MBED_DMA_API_H
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#include <stdint.h>
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#define DMA_ERROR_OUT_OF_CHANNELS (-1)
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typedef enum {
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DMA_USAGE_NEVER,
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DMA_USAGE_OPPORTUNISTIC,
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DMA_USAGE_ALWAYS,
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DMA_USAGE_TEMPORARY_ALLOCATED,
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DMA_USAGE_ALLOCATED
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} DMAUsage;
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#ifdef __cplusplus
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extern "C" {
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#endif
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void dma_init(void);
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int dma_channel_allocate(uint32_t capabilities);
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int dma_channel_free(int channelid);
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#ifdef __cplusplus
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}
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#endif
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#endif
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/** @}*/
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