portapack-mayhem/firmware/baseband/audio_dma.hpp
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/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2016 Furrtek
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef __AUDIO_DMA_H__
#define __AUDIO_DMA_H__
#include <cstdint>
#include "buffer.hpp"
namespace audio {
struct sample_t {
union {
struct {
int16_t left;
int16_t right;
};
uint32_t raw;
};
};
using buffer_t = buffer_t<sample_t>;
namespace dma {
void init();
void configure();
void enable();
void disable();
audio::buffer_t tx_empty_buffer();
audio::buffer_t rx_empty_buffer();
} /* namespace dma */
} /* namespace audio */
#endif /*__AUDIO_DMA_H__*/