Elijah Stanger-Jones / mbed-dev

Lightweight Mbed Library for STM F4 and F7

hal/dma_api.h@2:0edeaf13dfb2, 2021-02-04 (annotated)

Committer:
elijahsj
Date:
Thu Feb 04 20:44:34 2021 +0000
Revision:
2:0edeaf13dfb2
Parent:
0:083111ae2a11 
modfiied for spine board;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
saloutos 0:083111ae2a11 1
saloutos 0:083111ae2a11 2 /** \addtogroup hal */
saloutos 0:083111ae2a11 3 /** @{*/
saloutos 0:083111ae2a11 4 /* mbed Microcontroller Library
saloutos 0:083111ae2a11 5 * Copyright (c) 2014-2015 ARM Limited
saloutos 0:083111ae2a11 6 *
saloutos 0:083111ae2a11 7 * Licensed under the Apache License, Version 2.0 (the "License");
saloutos 0:083111ae2a11 8 * you may not use this file except in compliance with the License.
saloutos 0:083111ae2a11 9 * You may obtain a copy of the License at
saloutos 0:083111ae2a11 10 *
saloutos 0:083111ae2a11 11 * http://www.apache.org/licenses/LICENSE-2.0
saloutos 0:083111ae2a11 12 *
saloutos 0:083111ae2a11 13 * Unless required by applicable law or agreed to in writing, software
saloutos 0:083111ae2a11 14 * distributed under the License is distributed on an "AS IS" BASIS,
saloutos 0:083111ae2a11 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
saloutos 0:083111ae2a11 16 * See the License for the specific language governing permissions and
saloutos 0:083111ae2a11 17 * limitations under the License.
saloutos 0:083111ae2a11 18 */
saloutos 0:083111ae2a11 19 #ifndef MBED_DMA_API_H
saloutos 0:083111ae2a11 20 #define MBED_DMA_API_H
saloutos 0:083111ae2a11 21
saloutos 0:083111ae2a11 22 #include <stdint.h>
saloutos 0:083111ae2a11 23
saloutos 0:083111ae2a11 24 #define DMA_ERROR_OUT_OF_CHANNELS (-1)
saloutos 0:083111ae2a11 25
saloutos 0:083111ae2a11 26 typedef enum {
saloutos 0:083111ae2a11 27 DMA_USAGE_NEVER,
saloutos 0:083111ae2a11 28 DMA_USAGE_OPPORTUNISTIC,
saloutos 0:083111ae2a11 29 DMA_USAGE_ALWAYS,
saloutos 0:083111ae2a11 30 DMA_USAGE_TEMPORARY_ALLOCATED,
saloutos 0:083111ae2a11 31 DMA_USAGE_ALLOCATED
saloutos 0:083111ae2a11 32 } DMAUsage;
saloutos 0:083111ae2a11 33
saloutos 0:083111ae2a11 34 #ifdef __cplusplus
saloutos 0:083111ae2a11 35 extern "C" {
saloutos 0:083111ae2a11 36 #endif
saloutos 0:083111ae2a11 37
saloutos 0:083111ae2a11 38 void dma_init(void);
saloutos 0:083111ae2a11 39
saloutos 0:083111ae2a11 40 int dma_channel_allocate(uint32_t capabilities);
saloutos 0:083111ae2a11 41
saloutos 0:083111ae2a11 42 int dma_channel_free(int channelid);
saloutos 0:083111ae2a11 43
saloutos 0:083111ae2a11 44 #ifdef __cplusplus
saloutos 0:083111ae2a11 45 }
saloutos 0:083111ae2a11 46 #endif
saloutos 0:083111ae2a11 47
saloutos 0:083111ae2a11 48 #endif
saloutos 0:083111ae2a11 49
saloutos 0:083111ae2a11 50 /** @}*/