Outline ![]()
Files ![]()
loading...
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
/**
******************************************************************************
* @file BSP/Src/audio_rec_dfsdm.c
* @author MCD Application Team
* @brief This example code shows how to use the audio feature in the
* stm32412g_discovery driver
******************************************************************************
* @attention
*
* Copyright (c) 2017 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 "main.h"
#include <stdio.h>
#include "string.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup BSP
* @{
*/
/* Private typedef -----------------------------------------------------------*/
typedef enum
{
BUFFER_OFFSET_NONE = 0,
BUFFER_OFFSET_HALF = 1,
BUFFER_OFFSET_FULL = 2,
}BUFFER_StateTypeDef;
extern AUDIO_ErrorTypeDef AUDIO_Start(uint32_t audio_start_address, uint32_t audio_file_size);
/* Private define ------------------------------------------------------------*/
#define AUDIO_BLOCK_SIZE ((uint32_t)0xFFFE)
#define HEADBAND_HEIGHT 64
#define SCRATCH_BUFF_SIZE 512
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
#if defined ( __CC_ARM ) /* !< ARM Compiler */
int32_t Scratch [SCRATCH_BUFF_SIZE] __attribute__((at(0x2000E000)));
#elif defined ( __ICCARM__ ) /* !< ICCARM Compiler */
#pragma location=0x2000E000
int32_t Scratch [SCRATCH_BUFF_SIZE];
#elif defined ( __GNUC__ ) /* !< GNU Compiler */
int32_t Scratch [SCRATCH_BUFF_SIZE] __attribute__((section(".scratch_section")));
#endif
extern uint16_t internal_buffer[AUDIO_BLOCK_SIZE];
/* Global variables ---------------------------------------------------------*/
extern uint32_t audio_rec_buffer_state; /* defined in audio_rec_analog.c */
/* Private function prototypes -----------------------------------------------*/
static void AudioRec_SetHint(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Audio Play demo
* @param None
* @retval None
*/
void AudioRecDfsdm_demo (void)
{
AudioRec_SetHint();
uint8_t next_freq = 0;
uint8_t end_of_test = 0;
JOYState_TypeDef JoyState = JOY_NONE;
__IO uint32_t uwVolume = 70;
uint32_t AudioFreq[8] = {I2S_AUDIOFREQ_8K ,I2S_AUDIOFREQ_11K, I2S_AUDIOFREQ_16K, I2S_AUDIOFREQ_22K, I2S_AUDIOFREQ_32K, I2S_AUDIOFREQ_44K, I2S_AUDIOFREQ_48K, I2S_AUDIOFREQ_96K};
uint32_t *AudioFreq_ptr;
uint8_t FreqStr[25] = {0};
AudioFreq_ptr = AudioFreq + 6; /*I2S_AUDIOFREQ_48K*/
BSP_JOY_Init(JOY_MODE_GPIO);
while (end_of_test == 0)
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_FillRect(0, HEADBAND_HEIGHT, BSP_LCD_GetXSize(), BSP_LCD_GetYSize() - HEADBAND_HEIGHT);
BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 160, (uint8_t *)"TOP MP34 MICROPHONES TEST", CENTER_MODE);
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
sprintf((char*)FreqStr," FREQ: %lu ", *AudioFreq_ptr);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize()- 145, (uint8_t *)FreqStr, CENTER_MODE);
/* Allocate channel buffer scratch */
BSP_AUDIO_IN_AllocScratch (Scratch, SCRATCH_BUFF_SIZE);
/* Initialize Audio Recorder */
if (BSP_AUDIO_IN_Init(*AudioFreq_ptr, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR) != AUDIO_OK)
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 130, (uint8_t *)"Audio record init FAIL", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 115, (uint8_t *)"Try to reset board ", CENTER_MODE);
BSP_AUDIO_IN_DeInit();
}
else
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 130, (uint8_t *)"Audio record init OK", CENTER_MODE);
audio_rec_buffer_state = BUFFER_OFFSET_NONE;
/* Display the state on the screen */
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 115, (uint8_t *)"Buffering...", CENTER_MODE);
/* Start Recording */
BSP_AUDIO_IN_Record(internal_buffer, AUDIO_BLOCK_SIZE);
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 85, (uint8_t *)"Start Playback...", CENTER_MODE);
/* -----------Start Playback -------------- */
/* Initialize audio IN at REC_FREQ*/
BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_HEADPHONE, uwVolume, *AudioFreq_ptr);
/* Play the recorded buffer*/
BSP_AUDIO_OUT_Play((uint16_t*)(&internal_buffer[0]), AUDIO_BLOCK_SIZE * 2);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 70, (uint8_t *)"Streaming to headphones", CENTER_MODE);
}
next_freq = 0;
while (next_freq == 0)
{
/* Insert 100 ms delay */
HAL_Delay(100);
/* Get the Joystick State */
JoyState = BSP_JOY_GetState();
switch(JoyState)
{
case JOY_UP:
/* Increase volume by 5% */
if (uwVolume < 95)
uwVolume += 5;
else
uwVolume = 100;
BSP_AUDIO_OUT_SetVolume(uwVolume);
break;
case JOY_DOWN:
/* Decrease volume by 5% */
if (uwVolume > 5)
uwVolume -= 5;
else
uwVolume = 0;
BSP_AUDIO_OUT_SetVolume(uwVolume);
break;
case JOY_LEFT:
/*Decrease Frequency */
if (*AudioFreq_ptr != 8000)
{
AudioFreq_ptr--;
next_freq = 1;
}
break;
case JOY_RIGHT:
/* Increase Frequency */
if (*AudioFreq_ptr != 96000)
{
AudioFreq_ptr++;
next_freq = 1;
}
break;
default:
break;
}
if (CheckForUserInput() > 0)
{
end_of_test = 1;
/* Stop Player before close Test */
BSP_AUDIO_OUT_Stop(CODEC_PDWN_HW);
BSP_AUDIO_OUT_DeInit();
BSP_AUDIO_IN_Stop();
BSP_AUDIO_IN_DeInit();
return;
}
}
/* Stop Player before close Test */
BSP_AUDIO_OUT_Stop(CODEC_PDWN_HW);
BSP_AUDIO_OUT_DeInit();
BSP_AUDIO_IN_Stop();
BSP_AUDIO_IN_DeInit();
}
}
/**
* @brief Display Audio Record demo hint
* @param None
* @retval None
*/
static void AudioRec_SetHint(void)
{
/* Clear the LCD */
BSP_LCD_Clear(LCD_COLOR_WHITE);
/* Set Audio Demo description */
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), HEADBAND_HEIGHT);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_SetFont(&Font16);
BSP_LCD_DisplayStringAt(0, 1, (uint8_t *)"AUDIO REC DFSDM", CENTER_MODE);
BSP_LCD_SetFont(&Font12);
BSP_LCD_DisplayStringAt(0, 20, (uint8_t *)"Record and play audio", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, 35, (uint8_t *)"stream from microphones", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, 50, (uint8_t *)"Press BUTTON for next", CENTER_MODE);
}
/**
* @}
*/
/**
* @}
*/
Details ![]()
Show: from Types: Columns: ![]( "Show Project Names")
![]( "Show Locations")
![]( "Show Referring Symbols")
![]( "Show Scope")
This file uses the notable symbols shown below. Click anywhere in the file to view more details.