Tomo Yamanaka / mbed-dev

mbed library sources. Supersedes mbed-src. GR-PEACH runs on RAM.

Fork of mbed-dev by mbed official

hal/dma_api.h@103:493a29d2d4d7, 2016-03-30 (annotated)

Committer:
1050186
Date:
Wed Mar 30 11:41:25 2016 +0000
Revision:
103:493a29d2d4d7
Parent:
0:9b334a45a8ff 
GR-PEACH runs on RAM.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2014-2015 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #ifndef MBED_DMA_API_H
bogdanm 0:9b334a45a8ff 17 #define MBED_DMA_API_H
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include <stdint.h>
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 #define DMA_ERROR_OUT_OF_CHANNELS (-1)
bogdanm 0:9b334a45a8ff 22
bogdanm 0:9b334a45a8ff 23 typedef enum {
bogdanm 0:9b334a45a8ff 24 DMA_USAGE_NEVER,
bogdanm 0:9b334a45a8ff 25 DMA_USAGE_OPPORTUNISTIC,
bogdanm 0:9b334a45a8ff 26 DMA_USAGE_ALWAYS,
bogdanm 0:9b334a45a8ff 27 DMA_USAGE_TEMPORARY_ALLOCATED,
bogdanm 0:9b334a45a8ff 28 DMA_USAGE_ALLOCATED
bogdanm 0:9b334a45a8ff 29 } DMAUsage;
bogdanm 0:9b334a45a8ff 30
bogdanm 0:9b334a45a8ff 31 #ifdef __cplusplus
bogdanm 0:9b334a45a8ff 32 extern "C" {
bogdanm 0:9b334a45a8ff 33 #endif
bogdanm 0:9b334a45a8ff 34
bogdanm 0:9b334a45a8ff 35 void dma_init(void);
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37 int dma_channel_allocate(uint32_t capabilities);
bogdanm 0:9b334a45a8ff 38
bogdanm 0:9b334a45a8ff 39 int dma_channel_free(int channelid);
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 #ifdef __cplusplus
bogdanm 0:9b334a45a8ff 42 }
bogdanm 0:9b334a45a8ff 43 #endif
bogdanm 0:9b334a45a8ff 44
bogdanm 0:9b334a45a8ff 45 #endif