不韋 呂 / F746_AcousticEffector_MIC

Audio singal input and output example for DISCO-F746. Input: MEMS mic, Output: CN10 OUT, Acoustic effect: echo and frequency shift. DISCO-F746 によるオーディオ信号入出力．入力：MEMS マイク，出力：CN10 OUT，音響効果：エコー，周波数変換．

Dependencies:   F746_GUI F746_SAI_IO

mbed_src_STM32F7/hal/dma_api.h

Committer:
MikamiUitOpen
Date:
2017-04-10
Revision:
10:56f2f01df983
Parent:
6:38f7dce055d0

File content as of revision 10:56f2f01df983:

/* mbed Microcontroller Library
 * Copyright (c) 2014-2015 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef MBED_DMA_API_H
#define MBED_DMA_API_H

#include <stdint.h>

#define DMA_ERROR_OUT_OF_CHANNELS (-1)

typedef enum {
    DMA_USAGE_NEVER,
    DMA_USAGE_OPPORTUNISTIC,
    DMA_USAGE_ALWAYS,
    DMA_USAGE_TEMPORARY_ALLOCATED,
    DMA_USAGE_ALLOCATED
} DMAUsage;

#ifdef __cplusplus
extern "C" {
#endif

void dma_init(void);

int dma_channel_allocate(uint32_t capabilities);

int dma_channel_free(int channelid);

#ifdef __cplusplus
}
#endif

#endif