1 /*
2  * Copyright (c) 2006-2021, RT-Thread Development Team
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  *
6  * Change Logs:
7  * Date           Author       Notes
8  * 2017-12-04     Haley        the first version
9  */
10 
11 #ifndef __PDM_H_
12 #define __PDM_H_
13 
14 #include <rtthread.h>
15 
16 /**
17  * @brief External function definitions
18  *
19  */
20 int rt_pdm_init(void);
21 rt_uint8_t am_pdm_data_get(rt_uint8_t *buff, rt_uint16_t size);
22 void am_pdm_start(void);
23 void am_pdm_stop(void);
24 
25 #endif // __PDM_H_
26