dac.h

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/*
 * SPDX-FileCopyrightText: 2014 Simon Brummer
 * SPDX-FileCopyrightText: 2015-2016 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include <stddef.h>
#include <stdint.h>
#include <limits.h>
 
#include "periph_cpu.h"
#include "periph_conf.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#ifndef HAVE_DAC_T
typedef uint_fast8_t dac_t;
#endif

enum {
    DAC_OK     = 0,
    DAC_NOLINE = -1
};

#ifndef DAC_UNDEF
#define DAC_UNDEF           (UINT_FAST8_MAX)
#endif

#ifndef DAC_LINE
#define DAC_LINE(x)         (x)
#endif

int8_t dac_init(dac_t line);

void dac_set(dac_t line, uint16_t value);

void dac_poweron(dac_t line);

void dac_poweroff(dac_t line);

uint32_t dac_get_freq(void);

#define DAC_PLAY_LOOPED     (1 << 0)    

typedef void (*dma_cb_t)(void *arg);

int dac_play_setup(dac_t line, dma_cb_t cb, void *arg);

void dac_play(dac_t line, const uint16_t *buf, size_t len, uint8_t flags);

void dac_play_teardown(dac_t line);
 
#ifdef __cplusplus
}
#endif