Neil Johnson / microbit-ARMBand

Official Sheffield ARMBand micro:bit program

microbit/microbit-dal/mbed-dev-bin/dma_api.h@0:b9164b348919, 2016-10-17 (annotated)

Committer:
MrBedfordVan
Date:
Mon Oct 17 12:41:20 2016 +0000
Revision:
0:b9164b348919
Official Sheffield ARMBand Micro:bit program

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MrBedfordVan 0:b9164b348919 1 /* mbed Microcontroller Library
MrBedfordVan 0:b9164b348919 2 * Copyright (c) 2014-2015 ARM Limited
MrBedfordVan 0:b9164b348919 3 *
MrBedfordVan 0:b9164b348919 4 * Licensed under the Apache License, Version 2.0 (the "License");
MrBedfordVan 0:b9164b348919 5 * you may not use this file except in compliance with the License.
MrBedfordVan 0:b9164b348919 6 * You may obtain a copy of the License at
MrBedfordVan 0:b9164b348919 7 *
MrBedfordVan 0:b9164b348919 8 * http://www.apache.org/licenses/LICENSE-2.0
MrBedfordVan 0:b9164b348919 9 *
MrBedfordVan 0:b9164b348919 10 * Unless required by applicable law or agreed to in writing, software
MrBedfordVan 0:b9164b348919 11 * distributed under the License is distributed on an "AS IS" BASIS,
MrBedfordVan 0:b9164b348919 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MrBedfordVan 0:b9164b348919 13 * See the License for the specific language governing permissions and
MrBedfordVan 0:b9164b348919 14 * limitations under the License.
MrBedfordVan 0:b9164b348919 15 */
MrBedfordVan 0:b9164b348919 16 #ifndef MBED_DMA_API_H
MrBedfordVan 0:b9164b348919 17 #define MBED_DMA_API_H
MrBedfordVan 0:b9164b348919 18
MrBedfordVan 0:b9164b348919 19 #include <stdint.h>
MrBedfordVan 0:b9164b348919 20
MrBedfordVan 0:b9164b348919 21 #define DMA_ERROR_OUT_OF_CHANNELS (-1)
MrBedfordVan 0:b9164b348919 22
MrBedfordVan 0:b9164b348919 23 typedef enum {
MrBedfordVan 0:b9164b348919 24 DMA_USAGE_NEVER,
MrBedfordVan 0:b9164b348919 25 DMA_USAGE_OPPORTUNISTIC,
MrBedfordVan 0:b9164b348919 26 DMA_USAGE_ALWAYS,
MrBedfordVan 0:b9164b348919 27 DMA_USAGE_TEMPORARY_ALLOCATED,
MrBedfordVan 0:b9164b348919 28 DMA_USAGE_ALLOCATED
MrBedfordVan 0:b9164b348919 29 } DMAUsage;
MrBedfordVan 0:b9164b348919 30
MrBedfordVan 0:b9164b348919 31 #ifdef __cplusplus
MrBedfordVan 0:b9164b348919 32 extern "C" {
MrBedfordVan 0:b9164b348919 33 #endif
MrBedfordVan 0:b9164b348919 34
MrBedfordVan 0:b9164b348919 35 void dma_init(void);
MrBedfordVan 0:b9164b348919 36
MrBedfordVan 0:b9164b348919 37 int dma_channel_allocate(uint32_t capabilities);
MrBedfordVan 0:b9164b348919 38
MrBedfordVan 0:b9164b348919 39 int dma_channel_free(int channelid);
MrBedfordVan 0:b9164b348919 40
MrBedfordVan 0:b9164b348919 41 #ifdef __cplusplus
MrBedfordVan 0:b9164b348919 42 }
MrBedfordVan 0:b9164b348919 43 #endif
MrBedfordVan 0:b9164b348919 44
MrBedfordVan 0:b9164b348919 45 #endif