philippe s. / mbed-dev

mbed library sources. Supersedes mbed-src. Fixes analogIn and analogOut problems for TARGET_STM32F3. Tested on NUCLEO-F303K8, using 3 analogout and 7 analogin channels simultaneously. Added ability for STM32F334R8 and STM32F303K8 to use all three channels of DAC simultaneously. https://developer.mbed.org/users/StevieWray/code/mbed-dev/ Added ability for TARGET_STM32F3 to use more than one ADC simultaneously. https://developer.mbed.org/questions/67997/NUCLEO-F303K8ADC/

Fork of mbed-dev by mbed official

hal/dma_api.h

Committer:
neurofun
Date:
2016-02-23
Revision:
70:b3a5af880266
Parent:
0:9b334a45a8ff

File content as of revision 70:b3a5af880266:

/* 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