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Dependencies:   FFT

mbed/hal/dma_api.h@0:d6c9b09b4042, 2020-12-02 (annotated)

Committer:
annieluo2
Date:
Wed Dec 02 18:02:03 2020 +0000
Revision:
0:d6c9b09b4042
boo

Who changed what in which revision?

UserRevisionLine numberNew contents of line
annieluo2 0:d6c9b09b4042 1
annieluo2 0:d6c9b09b4042 2 /** \addtogroup hal */
annieluo2 0:d6c9b09b4042 3 /** @{*/
annieluo2 0:d6c9b09b4042 4 /* mbed Microcontroller Library
annieluo2 0:d6c9b09b4042 5 * Copyright (c) 2014-2015 ARM Limited
annieluo2 0:d6c9b09b4042 6 *
annieluo2 0:d6c9b09b4042 7 * Licensed under the Apache License, Version 2.0 (the "License");
annieluo2 0:d6c9b09b4042 8 * you may not use this file except in compliance with the License.
annieluo2 0:d6c9b09b4042 9 * You may obtain a copy of the License at
annieluo2 0:d6c9b09b4042 10 *
annieluo2 0:d6c9b09b4042 11 * http://www.apache.org/licenses/LICENSE-2.0
annieluo2 0:d6c9b09b4042 12 *
annieluo2 0:d6c9b09b4042 13 * Unless required by applicable law or agreed to in writing, software
annieluo2 0:d6c9b09b4042 14 * distributed under the License is distributed on an "AS IS" BASIS,
annieluo2 0:d6c9b09b4042 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
annieluo2 0:d6c9b09b4042 16 * See the License for the specific language governing permissions and
annieluo2 0:d6c9b09b4042 17 * limitations under the License.
annieluo2 0:d6c9b09b4042 18 */
annieluo2 0:d6c9b09b4042 19 #ifndef MBED_DMA_API_H
annieluo2 0:d6c9b09b4042 20 #define MBED_DMA_API_H
annieluo2 0:d6c9b09b4042 21
annieluo2 0:d6c9b09b4042 22 #include <stdint.h>
annieluo2 0:d6c9b09b4042 23
annieluo2 0:d6c9b09b4042 24 #define DMA_ERROR_OUT_OF_CHANNELS (-1)
annieluo2 0:d6c9b09b4042 25
annieluo2 0:d6c9b09b4042 26 typedef enum {
annieluo2 0:d6c9b09b4042 27 DMA_USAGE_NEVER,
annieluo2 0:d6c9b09b4042 28 DMA_USAGE_OPPORTUNISTIC,
annieluo2 0:d6c9b09b4042 29 DMA_USAGE_ALWAYS,
annieluo2 0:d6c9b09b4042 30 DMA_USAGE_TEMPORARY_ALLOCATED,
annieluo2 0:d6c9b09b4042 31 DMA_USAGE_ALLOCATED
annieluo2 0:d6c9b09b4042 32 } DMAUsage;
annieluo2 0:d6c9b09b4042 33
annieluo2 0:d6c9b09b4042 34 #ifdef __cplusplus
annieluo2 0:d6c9b09b4042 35 extern "C" {
annieluo2 0:d6c9b09b4042 36 #endif
annieluo2 0:d6c9b09b4042 37
annieluo2 0:d6c9b09b4042 38 void dma_init(void);
annieluo2 0:d6c9b09b4042 39
annieluo2 0:d6c9b09b4042 40 int dma_channel_allocate(uint32_t capabilities);
annieluo2 0:d6c9b09b4042 41
annieluo2 0:d6c9b09b4042 42 int dma_channel_free(int channelid);
annieluo2 0:d6c9b09b4042 43
annieluo2 0:d6c9b09b4042 44 #ifdef __cplusplus
annieluo2 0:d6c9b09b4042 45 }
annieluo2 0:d6c9b09b4042 46 #endif
annieluo2 0:d6c9b09b4042 47
annieluo2 0:d6c9b09b4042 48 #endif
annieluo2 0:d6c9b09b4042 49
annieluo2 0:d6c9b09b4042 50 /** @}*/