blob: f912e29d7a1d0653c29cb126a0e4e794df65f7f2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/**
******************************************************************************
* @file stm32wbxx_hal_sai_ex.c
* @author MCD Application Team
* @brief SAI Extended HAL module driver.
* This file provides firmware functions to manage the following
* functionality of the SAI Peripheral Controller:
* + Modify PDM microphone delays.
*
******************************************************************************
* @attention
*
* Copyright (c) 2019 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32wbxx_hal.h"
/** @addtogroup STM32WBxx_HAL_Driver
* @{
*/
#ifdef HAL_SAI_MODULE_ENABLED
#if defined (SAI1)
/** @defgroup SAIEx SAIEx
* @brief SAI Extended HAL module driver
* @{
*/
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup SAIEx_Private_Defines SAIEx Extended Private Defines
* @{
*/
#define SAI_PDM_DELAY_MASK 0x77U
#define SAI_PDM_DELAY_OFFSET 8U
#define SAI_PDM_RIGHT_DELAY_OFFSET 4U
/**
* @}
*/
/* Private macros ------------------------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup SAIEx_Exported_Functions SAIEx Extended Exported Functions
* @{
*/
/** @defgroup SAIEx_Exported_Functions_Group1 Peripheral Control functions
* @brief SAIEx control functions
*
@verbatim
===============================================================================
##### Extended features functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Modify PDM microphone delays
@endverbatim
* @{
*/
/**
* @brief Configure PDM microphone delays.
* @param hsai SAI handle.
* @param pdmMicDelay Microphone delays configuration.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_SAIEx_ConfigPdmMicDelay(SAI_HandleTypeDef *hsai, SAIEx_PdmMicDelayParamTypeDef *pdmMicDelay)
{
HAL_StatusTypeDef status = HAL_OK;
uint32_t offset;
/* Check that SAI sub-block is SAI1 sub-block A */
if (hsai->Instance != SAI1_Block_A)
{
status = HAL_ERROR;
}
else
{
/* Check microphone delay parameters */
assert_param(IS_SAI_PDM_MIC_PAIRS_NUMBER(pdmMicDelay->MicPair));
assert_param(IS_SAI_PDM_MIC_DELAY(pdmMicDelay->LeftDelay));
assert_param(IS_SAI_PDM_MIC_DELAY(pdmMicDelay->RightDelay));
/* Compute offset on PDMDLY register according mic pair number */
offset = SAI_PDM_DELAY_OFFSET * (pdmMicDelay->MicPair - 1U);
/* Check SAI state and offset */
if ((hsai->State != HAL_SAI_STATE_RESET) && (offset <= 24U))
{
/* Reset current delays for specified microphone */
SAI1->PDMDLY &= ~(SAI_PDM_DELAY_MASK << offset);
/* Apply new microphone delays */
SAI1->PDMDLY |= (((pdmMicDelay->RightDelay << SAI_PDM_RIGHT_DELAY_OFFSET) | pdmMicDelay->LeftDelay) << offset);
}
else
{
status = HAL_ERROR;
}
}
return status;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
#endif /* SAI1 */
#endif /* HAL_SAI_MODULE_ENABLED */
/**
* @}
*/
|
