analog_microphone.h

/*
 * Copyright (c) 2021 Arm Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 * 
 */
 
#ifndef _PICO_ANALOG_MICROPHONE_H_
#define _PICO_ANALOG_MICROPHONE_H_
 
typedef void (*analog_samples_ready_handler_t)(void);
 
struct analog_microphone_config {
    uint gpio;
    float bias_voltage;
    uint sample_rate;
    uint sample_buffer_size;
};
 
int analog_microphone_init(const struct analog_microphone_config* config);
void analog_microphone_deinit();
 
int analog_microphone_start();
void analog_microphone_stop();
 
void analog_microphone_set_samples_ready_handler(analog_samples_ready_handler_t handler);
 
int analog_microphone_read(int16_t* buffer, size_t samples);
 
#endif