Marco Mayer / Mbed OS Queue

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

mbed-os/hal/dma_api.h@2:c7897a3f5f11, 2020-04-22 (annotated)

Committer:
demayer
Date:
Wed Apr 22 11:50:00 2020 +0000
Revision:
2:c7897a3f5f11
Parent:
0:6bf0743ece18 
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
demayer 0:6bf0743ece18 1
demayer 0:6bf0743ece18 2 /** \addtogroup hal */
demayer 0:6bf0743ece18 3 /** @{*/
demayer 0:6bf0743ece18 4 /* mbed Microcontroller Library
demayer 0:6bf0743ece18 5 * Copyright (c) 2014-2015 ARM Limited
demayer 0:6bf0743ece18 6 *
demayer 0:6bf0743ece18 7 * Licensed under the Apache License, Version 2.0 (the "License");
demayer 0:6bf0743ece18 8 * you may not use this file except in compliance with the License.
demayer 0:6bf0743ece18 9 * You may obtain a copy of the License at
demayer 0:6bf0743ece18 10 *
demayer 0:6bf0743ece18 11 * http://www.apache.org/licenses/LICENSE-2.0
demayer 0:6bf0743ece18 12 *
demayer 0:6bf0743ece18 13 * Unless required by applicable law or agreed to in writing, software
demayer 0:6bf0743ece18 14 * distributed under the License is distributed on an "AS IS" BASIS,
demayer 0:6bf0743ece18 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
demayer 0:6bf0743ece18 16 * See the License for the specific language governing permissions and
demayer 0:6bf0743ece18 17 * limitations under the License.
demayer 0:6bf0743ece18 18 */
demayer 0:6bf0743ece18 19 #ifndef MBED_DMA_API_H
demayer 0:6bf0743ece18 20 #define MBED_DMA_API_H
demayer 0:6bf0743ece18 21
demayer 0:6bf0743ece18 22 #include <stdint.h>
demayer 0:6bf0743ece18 23
demayer 0:6bf0743ece18 24 #define DMA_ERROR_OUT_OF_CHANNELS (-1)
demayer 0:6bf0743ece18 25
demayer 0:6bf0743ece18 26 typedef enum {
demayer 0:6bf0743ece18 27 DMA_USAGE_NEVER,
demayer 0:6bf0743ece18 28 DMA_USAGE_OPPORTUNISTIC,
demayer 0:6bf0743ece18 29 DMA_USAGE_ALWAYS,
demayer 0:6bf0743ece18 30 DMA_USAGE_TEMPORARY_ALLOCATED,
demayer 0:6bf0743ece18 31 DMA_USAGE_ALLOCATED
demayer 0:6bf0743ece18 32 } DMAUsage;
demayer 0:6bf0743ece18 33
demayer 0:6bf0743ece18 34 #ifdef __cplusplus
demayer 0:6bf0743ece18 35 extern "C" {
demayer 0:6bf0743ece18 36 #endif
demayer 0:6bf0743ece18 37
demayer 0:6bf0743ece18 38 void dma_init(void);
demayer 0:6bf0743ece18 39
demayer 0:6bf0743ece18 40 int dma_channel_allocate(uint32_t capabilities);
demayer 0:6bf0743ece18 41
demayer 0:6bf0743ece18 42 int dma_channel_free(int channelid);
demayer 0:6bf0743ece18 43
demayer 0:6bf0743ece18 44 #ifdef __cplusplus
demayer 0:6bf0743ece18 45 }
demayer 0:6bf0743ece18 46 #endif
demayer 0:6bf0743ece18 47
demayer 0:6bf0743ece18 48 #endif
demayer 0:6bf0743ece18 49
demayer 0:6bf0743ece18 50 /** @}*/