mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

hal/dma_api.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
128:9bcdf88f62b0 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 128:9bcdf88f62b0 1
<> 128:9bcdf88f62b0 2 /** \addtogroup hal */
<> 128:9bcdf88f62b0 3 /** @{*/
<> 128:9bcdf88f62b0 4 /* mbed Microcontroller Library
<> 128:9bcdf88f62b0 5 * Copyright (c) 2014-2015 ARM Limited
AnnaBridge 172:65be27845400 6 * SPDX-License-Identifier: Apache-2.0
<> 128:9bcdf88f62b0 7 *
<> 128:9bcdf88f62b0 8 * Licensed under the Apache License, Version 2.0 (the "License");
<> 128:9bcdf88f62b0 9 * you may not use this file except in compliance with the License.
<> 128:9bcdf88f62b0 10 * You may obtain a copy of the License at
<> 128:9bcdf88f62b0 11 *
<> 128:9bcdf88f62b0 12 * http://www.apache.org/licenses/LICENSE-2.0
<> 128:9bcdf88f62b0 13 *
<> 128:9bcdf88f62b0 14 * Unless required by applicable law or agreed to in writing, software
<> 128:9bcdf88f62b0 15 * distributed under the License is distributed on an "AS IS" BASIS,
<> 128:9bcdf88f62b0 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 128:9bcdf88f62b0 17 * See the License for the specific language governing permissions and
<> 128:9bcdf88f62b0 18 * limitations under the License.
<> 128:9bcdf88f62b0 19 */
<> 128:9bcdf88f62b0 20 #ifndef MBED_DMA_API_H
<> 128:9bcdf88f62b0 21 #define MBED_DMA_API_H
<> 128:9bcdf88f62b0 22
<> 128:9bcdf88f62b0 23 #include <stdint.h>
<> 128:9bcdf88f62b0 24
<> 128:9bcdf88f62b0 25 #define DMA_ERROR_OUT_OF_CHANNELS (-1)
<> 128:9bcdf88f62b0 26
<> 128:9bcdf88f62b0 27 typedef enum {
<> 128:9bcdf88f62b0 28 DMA_USAGE_NEVER,
<> 128:9bcdf88f62b0 29 DMA_USAGE_OPPORTUNISTIC,
<> 128:9bcdf88f62b0 30 DMA_USAGE_ALWAYS,
<> 128:9bcdf88f62b0 31 DMA_USAGE_TEMPORARY_ALLOCATED,
<> 128:9bcdf88f62b0 32 DMA_USAGE_ALLOCATED
<> 128:9bcdf88f62b0 33 } DMAUsage;
<> 128:9bcdf88f62b0 34
<> 128:9bcdf88f62b0 35 #ifdef __cplusplus
<> 128:9bcdf88f62b0 36 extern "C" {
<> 128:9bcdf88f62b0 37 #endif
<> 128:9bcdf88f62b0 38
<> 128:9bcdf88f62b0 39 void dma_init(void);
<> 128:9bcdf88f62b0 40
<> 128:9bcdf88f62b0 41 int dma_channel_allocate(uint32_t capabilities);
<> 128:9bcdf88f62b0 42
<> 128:9bcdf88f62b0 43 int dma_channel_free(int channelid);
<> 128:9bcdf88f62b0 44
<> 128:9bcdf88f62b0 45 #ifdef __cplusplus
<> 128:9bcdf88f62b0 46 }
<> 128:9bcdf88f62b0 47 #endif
<> 128:9bcdf88f62b0 48
<> 128:9bcdf88f62b0 49 #endif
<> 128:9bcdf88f62b0 50
<> 128:9bcdf88f62b0 51 /** @}*/