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hal/dma_api.h
- Committer:
- amithy
- Date:
- 2017-11-09
- Revision:
- 178:c26431f84b0d
- Parent:
- 149:156823d33999
File content as of revision 178:c26431f84b0d:
/** \addtogroup hal */ /** @{*/ /* mbed Microcontroller Library * Copyright (c) 2014-2015 ARM Limited * * 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_H #define MBED_DMA_API_H #include <stdint.h> #define DMA_ERROR_OUT_OF_CHANNELS (-1) typedef enum { DMA_USAGE_NEVER, DMA_USAGE_OPPORTUNISTIC, DMA_USAGE_ALWAYS, DMA_USAGE_TEMPORARY_ALLOCATED, DMA_USAGE_ALLOCATED } DMAUsage; #ifdef __cplusplus extern "C" { #endif void dma_init(void); int dma_channel_allocate(uint32_t capabilities); int dma_channel_free(int channelid); #ifdef __cplusplus } #endif #endif /** @}*/