R&J / Mbed OS 487_Laboratory_1

lab 1 code

Dependencies:   CMSIS-DSP_for_STM32F746G BSP_DISCO_F746NG

main.cpp@13:61131aac4031, 2019-12-30 (annotated)

Committer:
bmazzeo
Date:
Mon Dec 30 17:27:57 2019 +0000
Revision:
13:61131aac4031
Parent:
12:e44766b61346
Child:
14:18f159d48340
All code nicely organized - displays timing and traces.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bmazzeo 9:f5b37c71856d 1 /**
bmazzeo 9:f5b37c71856d 2 ******************************************************************************
bmazzeo 9:f5b37c71856d 3 * @file main.c
bmazzeo 9:f5b37c71856d 4 * @author Brian Mazzeo
bmazzeo 9:f5b37c71856d 5 * @brief This file provides a set of code for signal processing in 487.
bmazzeo 9:f5b37c71856d 6 * Parts are taken from example code from STMIcroelectronics
bmazzeo 9:f5b37c71856d 7 ******************************************************************************
bmazzeo 9:f5b37c71856d 8 * @attention
bmazzeo 13:61131aac4031 9 * This code was specifically developed for BYU ECEn 487 course
bmazzeo 13:61131aac4031 10 * Introduction to Digital Signal Processing.
bmazzeo 9:f5b37c71856d 11 *
bmazzeo 9:f5b37c71856d 12 *
bmazzeo 9:f5b37c71856d 13 ******************************************************************************
bmazzeo 9:f5b37c71856d 14 */
bmazzeo 9:f5b37c71856d 15
bmazzeo 9:f5b37c71856d 16
adustm 0:da04816fb411 17 #include "mbed.h"
Jerome Coutant 5:66c230f74325 18 #include "stm32746g_discovery_audio.h"
Jerome Coutant 5:66c230f74325 19 #include "stm32746g_discovery_sdram.h"
bmazzeo 6:e689075b04ed 20 #include "stm32746g_discovery_lcd.h"
adustm 0:da04816fb411 21
Jerome Coutant 5:66c230f74325 22 typedef enum {
adustm 0:da04816fb411 23 BUFFER_OFFSET_NONE = 0,
adustm 0:da04816fb411 24 BUFFER_OFFSET_HALF = 1,
adustm 0:da04816fb411 25 BUFFER_OFFSET_FULL = 2,
Jerome Coutant 5:66c230f74325 26 } BUFFER_StateTypeDef;
Jerome Coutant 5:66c230f74325 27
adustm 0:da04816fb411 28
bmazzeo 12:e44766b61346 29 #define HALF_AUDIO_BLOCK_SIZE ((uint32_t)128) // Number of samples @ Frequency
bmazzeo 12:e44766b61346 30 #define AUDIO_BLOCK_SIZE ((uint32_t)256)
bmazzeo 6:e689075b04ed 31
bmazzeo 9:f5b37c71856d 32 #define SDRAM_DEVICE_ADDR_AUDIO_MEM ((uint32_t)0xC0400000)
bmazzeo 9:f5b37c71856d 33 #define AUDIO_BUFFER_IN SDRAM_DEVICE_ADDR_AUDIO_MEM
bmazzeo 9:f5b37c71856d 34 #define AUDIO_BUFFER_OUT (AUDIO_BUFFER_IN + (AUDIO_BLOCK_SIZE * 2))
Jerome Coutant 5:66c230f74325 35
bmazzeo 8:d1c41eca57f0 36 #define OSC_START_X_POS 20
bmazzeo 6:e689075b04ed 37 #define OSC_LINE_SIZE 256
bmazzeo 6:e689075b04ed 38 #define L_CHANNEL_Y_POS 120
bmazzeo 6:e689075b04ed 39 #define R_CHANNEL_Y_POS 220
bmazzeo 7:e1dfd64eba81 40 #define AUDIO_DRAW_LIMIT 30
bmazzeo 6:e689075b04ed 41
bmazzeo 9:f5b37c71856d 42 Timer timer;
bmazzeo 9:f5b37c71856d 43
Jerome Coutant 5:66c230f74325 44 volatile uint32_t audio_rec_buffer_state = BUFFER_OFFSET_NONE;
bmazzeo 7:e1dfd64eba81 45 static void Erase_Trace(uint16_t Xpos, uint16_t L_Ypos, uint16_t R_Ypos, uint16_t Length);
bmazzeo 8:d1c41eca57f0 46 static void Draw_Trace(uint16_t Xpos, uint16_t L_Ypos, uint16_t R_Ypos, uint16_t* Mem_start, uint16_t Length);
Jerome Coutant 5:66c230f74325 47
bmazzeo 9:f5b37c71856d 48 uint32_t counter = 0;
bmazzeo 10:a82b64ea1d11 49 char buf[40];
bmazzeo 13:61131aac4031 50 int first_half_time = 0;
bmazzeo 13:61131aac4031 51 int second_half_time = 0;
bmazzeo 13:61131aac4031 52 int total_time = 0;
bmazzeo 9:f5b37c71856d 53
adustm 0:da04816fb411 54 int main()
adustm 0:da04816fb411 55 {
bmazzeo 13:61131aac4031 56 /* Initialize the LCD Screen and display information */
bmazzeo 6:e689075b04ed 57 BSP_LCD_Init();
bmazzeo 6:e689075b04ed 58 BSP_LCD_LayerDefaultInit(LTDC_ACTIVE_LAYER, LCD_FB_START_ADDRESS);
bmazzeo 6:e689075b04ed 59 BSP_LCD_SelectLayer(LTDC_ACTIVE_LAYER);
bmazzeo 6:e689075b04ed 60
bmazzeo 6:e689075b04ed 61 BSP_LCD_Clear(LCD_COLOR_BLACK);
bmazzeo 6:e689075b04ed 62 BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
bmazzeo 6:e689075b04ed 63
bmazzeo 6:e689075b04ed 64 BSP_LCD_SetBackColor(LCD_COLOR_BLACK);
bmazzeo 6:e689075b04ed 65 BSP_LCD_SetTextColor(LCD_COLOR_ORANGE);
bmazzeo 7:e1dfd64eba81 66 BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"487 Mic Audio Test Code", LEFT_MODE);
bmazzeo 8:d1c41eca57f0 67 BSP_LCD_DisplayStringAt(0, L_CHANNEL_Y_POS, (uint8_t *)"L", LEFT_MODE);
bmazzeo 8:d1c41eca57f0 68 BSP_LCD_DisplayStringAt(0, R_CHANNEL_Y_POS, (uint8_t *)"R", LEFT_MODE);
bmazzeo 6:e689075b04ed 69
bmazzeo 13:61131aac4031 70
bmazzeo 13:61131aac4031 71 /* Initialize the Audio Interface */
Jerome Coutant 5:66c230f74325 72 BSP_AUDIO_IN_OUT_Init(INPUT_DEVICE_DIGITAL_MICROPHONE_2, OUTPUT_DEVICE_HEADPHONE, DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR);
adustm 0:da04816fb411 73
adustm 0:da04816fb411 74 /* Initialize SDRAM buffers */
Jerome Coutant 5:66c230f74325 75 BSP_SDRAM_Init();
Jerome Coutant 5:66c230f74325 76 memset((uint16_t *)AUDIO_BUFFER_IN, 0, AUDIO_BLOCK_SIZE * 2);
Jerome Coutant 5:66c230f74325 77 memset((uint16_t *)AUDIO_BUFFER_OUT, 0, AUDIO_BLOCK_SIZE * 2);
Jerome Coutant 5:66c230f74325 78
adustm 0:da04816fb411 79
adustm 0:da04816fb411 80 /* Start Recording */
bmazzeo 13:61131aac4031 81 if (BSP_AUDIO_IN_Record((uint16_t *)AUDIO_BUFFER_IN, AUDIO_BLOCK_SIZE) != AUDIO_OK) { printf("BSP_AUDIO_IN_Record error\n"); }
adustm 0:da04816fb411 82
adustm 0:da04816fb411 83 /* Start Playback */
Jerome Coutant 5:66c230f74325 84 BSP_AUDIO_OUT_SetAudioFrameSlot(CODEC_AUDIOFRAME_SLOT_02);
bmazzeo 13:61131aac4031 85 if (BSP_AUDIO_OUT_Play((uint16_t *)AUDIO_BUFFER_OUT, AUDIO_BLOCK_SIZE * 2) != AUDIO_OK) { printf("BSP_AUDIO_OUT_Play error\n"); }
bmazzeo 13:61131aac4031 86
adustm 0:da04816fb411 87
bmazzeo 9:f5b37c71856d 88 timer.start();
adustm 0:da04816fb411 89 while (1) {
bmazzeo 6:e689075b04ed 90 /* First Half */
bmazzeo 13:61131aac4031 91 /* Wait end of half block recording before going on in the first half cycle*/
bmazzeo 11:4256dbbb0c89 92 while (audio_rec_buffer_state != BUFFER_OFFSET_HALF) {}
bmazzeo 9:f5b37c71856d 93
bmazzeo 13:61131aac4031 94 /* This captures the time of an entire cycle */
bmazzeo 9:f5b37c71856d 95 total_time = timer.read_us();
bmazzeo 13:61131aac4031 96
bmazzeo 13:61131aac4031 97 /* Reset the timer counter to zero */
bmazzeo 9:f5b37c71856d 98 timer.reset();
Jerome Coutant 5:66c230f74325 99
bmazzeo 13:61131aac4031 100 /* Plot traces of first half block recording */
bmazzeo 12:e44766b61346 101 Erase_Trace(OSC_START_X_POS, L_CHANNEL_Y_POS, R_CHANNEL_Y_POS, HALF_AUDIO_BLOCK_SIZE);
bmazzeo 12:e44766b61346 102 Draw_Trace(OSC_START_X_POS, L_CHANNEL_Y_POS, R_CHANNEL_Y_POS, (uint16_t *) AUDIO_BUFFER_IN, HALF_AUDIO_BLOCK_SIZE);
bmazzeo 9:f5b37c71856d 103
bmazzeo 13:61131aac4031 104 /* Copy recorded 1st half block into the audio buffer that goes out */
bmazzeo 13:61131aac4031 105 memcpy((uint16_t *)(AUDIO_BUFFER_OUT), (uint16_t *)(AUDIO_BUFFER_IN), AUDIO_BLOCK_SIZE);
bmazzeo 13:61131aac4031 106
bmazzeo 13:61131aac4031 107 /* Capture the timing of the first half processing */
bmazzeo 9:f5b37c71856d 108 first_half_time = timer.read_us();
bmazzeo 13:61131aac4031 109 /* End First Half */
bmazzeo 8:d1c41eca57f0 110
bmazzeo 6:e689075b04ed 111 /* Second Half */
adustm 0:da04816fb411 112 /* Wait end of one block recording */
bmazzeo 11:4256dbbb0c89 113 while (audio_rec_buffer_state != BUFFER_OFFSET_FULL) {}
bmazzeo 9:f5b37c71856d 114
bmazzeo 13:61131aac4031 115 /* Plot traces of second half block recording */
bmazzeo 12:e44766b61346 116 Erase_Trace(OSC_START_X_POS+HALF_AUDIO_BLOCK_SIZE, L_CHANNEL_Y_POS, R_CHANNEL_Y_POS, HALF_AUDIO_BLOCK_SIZE);
bmazzeo 12:e44766b61346 117 Draw_Trace(OSC_START_X_POS+HALF_AUDIO_BLOCK_SIZE, L_CHANNEL_Y_POS, R_CHANNEL_Y_POS, (uint16_t *) AUDIO_BUFFER_IN + (AUDIO_BLOCK_SIZE), HALF_AUDIO_BLOCK_SIZE);
bmazzeo 13:61131aac4031 118
bmazzeo 13:61131aac4031 119 /* Compute important cycle information and display it*/
bmazzeo 6:e689075b04ed 120 counter++;
bmazzeo 10:a82b64ea1d11 121 sprintf(buf, "Cycles: %9d", counter);
bmazzeo 6:e689075b04ed 122 BSP_LCD_SetTextColor(LCD_COLOR_RED);
bmazzeo 10:a82b64ea1d11 123 BSP_LCD_DisplayStringAt(0, 46, (uint8_t *) buf, LEFT_MODE);
bmazzeo 10:a82b64ea1d11 124 sprintf(buf, "1:%6d 2:%6d T:%6d", first_half_time, second_half_time, total_time);
bmazzeo 10:a82b64ea1d11 125 BSP_LCD_DisplayStringAt(0, 20, (uint8_t *) buf, LEFT_MODE);
bmazzeo 13:61131aac4031 126
bmazzeo 13:61131aac4031 127 /* Copy recorded 2nd half block into audio output buffer */
bmazzeo 13:61131aac4031 128 memcpy((uint16_t *)(AUDIO_BUFFER_OUT + (AUDIO_BLOCK_SIZE)), (uint16_t *)(AUDIO_BUFFER_IN + (AUDIO_BLOCK_SIZE)), AUDIO_BLOCK_SIZE);
bmazzeo 13:61131aac4031 129
bmazzeo 13:61131aac4031 130 /* Change the recording buffer state to reflect the status of the buffer */
bmazzeo 13:61131aac4031 131 audio_rec_buffer_state = BUFFER_OFFSET_NONE;
bmazzeo 9:f5b37c71856d 132
bmazzeo 13:61131aac4031 133 /* Measures the amount of time to process the second half */
bmazzeo 9:f5b37c71856d 134 second_half_time = timer.read_us();
bmazzeo 9:f5b37c71856d 135
bmazzeo 13:61131aac4031 136 /* End Second Half */
adustm 0:da04816fb411 137 }
adustm 0:da04816fb411 138 }
Jerome Coutant 5:66c230f74325 139
bmazzeo 7:e1dfd64eba81 140 /**
bmazzeo 7:e1dfd64eba81 141 * @brief Draws a trace of the data line.
bmazzeo 7:e1dfd64eba81 142 * @param Xpos: X position
bmazzeo 7:e1dfd64eba81 143 * @param L_Ypos: Left channel Y position
bmazzeo 7:e1dfd64eba81 144 * @param R_Ypos: Right channel Y position
bmazzeo 7:e1dfd64eba81 145 * @param Mem_start: Start of memory location
bmazzeo 7:e1dfd64eba81 146 * @param Length: length of trace
bmazzeo 7:e1dfd64eba81 147 * @retval None
bmazzeo 7:e1dfd64eba81 148 */
bmazzeo 7:e1dfd64eba81 149 void Erase_Trace(uint16_t Xpos, uint16_t L_Ypos, uint16_t R_Ypos, uint16_t Length)
bmazzeo 7:e1dfd64eba81 150 {
bmazzeo 7:e1dfd64eba81 151 BSP_LCD_SetTextColor(LCD_COLOR_BROWN);
bmazzeo 7:e1dfd64eba81 152 BSP_LCD_FillRect(Xpos, L_Ypos - AUDIO_DRAW_LIMIT, Length, AUDIO_DRAW_LIMIT);
bmazzeo 7:e1dfd64eba81 153 BSP_LCD_FillRect(Xpos, L_Ypos+1, Length, AUDIO_DRAW_LIMIT);
bmazzeo 7:e1dfd64eba81 154 BSP_LCD_FillRect(Xpos, R_Ypos - AUDIO_DRAW_LIMIT, Length, AUDIO_DRAW_LIMIT);
bmazzeo 7:e1dfd64eba81 155 BSP_LCD_FillRect(Xpos, R_Ypos+1, Length, AUDIO_DRAW_LIMIT);
bmazzeo 7:e1dfd64eba81 156
bmazzeo 7:e1dfd64eba81 157 BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
bmazzeo 8:d1c41eca57f0 158 BSP_LCD_DrawHLine(Xpos, L_CHANNEL_Y_POS, Length);
bmazzeo 8:d1c41eca57f0 159 BSP_LCD_DrawHLine(Xpos, R_CHANNEL_Y_POS, Length);
bmazzeo 7:e1dfd64eba81 160
bmazzeo 7:e1dfd64eba81 161 }
bmazzeo 7:e1dfd64eba81 162
Jerome Coutant 5:66c230f74325 163
bmazzeo 6:e689075b04ed 164 /**
bmazzeo 6:e689075b04ed 165 * @brief Draws a trace of the data line.
bmazzeo 6:e689075b04ed 166 * @param Xpos: X position
bmazzeo 7:e1dfd64eba81 167 * @param L_Ypos: Left channel Y position
bmazzeo 7:e1dfd64eba81 168 * @param R_Ypos: Right channel Y position
bmazzeo 6:e689075b04ed 169 * @param Mem_start: Start of memory location
bmazzeo 6:e689075b04ed 170 * @param Length: length of trace
bmazzeo 6:e689075b04ed 171 * @retval None
bmazzeo 6:e689075b04ed 172 */
bmazzeo 8:d1c41eca57f0 173 void Draw_Trace(uint16_t Xpos, uint16_t L_Ypos, uint16_t R_Ypos, uint16_t* Mem_start, uint16_t Length)
bmazzeo 6:e689075b04ed 174 {
bmazzeo 7:e1dfd64eba81 175 uint16_t i;
bmazzeo 7:e1dfd64eba81 176 uint32_t data_value;
bmazzeo 7:e1dfd64eba81 177 uint32_t* mem_address;
bmazzeo 7:e1dfd64eba81 178 char buf[10];
bmazzeo 7:e1dfd64eba81 179 int16_t L_audio_value;
bmazzeo 7:e1dfd64eba81 180 int16_t R_audio_value;
bmazzeo 6:e689075b04ed 181
bmazzeo 7:e1dfd64eba81 182 data_value = *((uint32_t*) Mem_start);
bmazzeo 7:e1dfd64eba81 183 L_audio_value = (int16_t) ((data_value >> 16) & 0xFFFF);
bmazzeo 7:e1dfd64eba81 184 R_audio_value = (int16_t) (data_value & 0xFFFF);
bmazzeo 7:e1dfd64eba81 185
bmazzeo 8:d1c41eca57f0 186 //sprintf(buf, "%12d", data_value);
bmazzeo 8:d1c41eca57f0 187 //BSP_LCD_DisplayStringAt(0, 60, (uint8_t *) buf, LEFT_MODE);
bmazzeo 8:d1c41eca57f0 188
bmazzeo 7:e1dfd64eba81 189 //sprintf(buf, "%12d", L_audio_value);
bmazzeo 7:e1dfd64eba81 190 //BSP_LCD_DisplayStringAt(0, 60, (uint8_t *) buf, LEFT_MODE);
bmazzeo 6:e689075b04ed 191
bmazzeo 7:e1dfd64eba81 192 //sprintf(buf, "%12d", R_audio_value);
bmazzeo 7:e1dfd64eba81 193 //BSP_LCD_DisplayStringAt(0, 80, (uint8_t *) buf, LEFT_MODE);
bmazzeo 7:e1dfd64eba81 194
bmazzeo 8:d1c41eca57f0 195 for (i=0; i<Length; i++)
bmazzeo 6:e689075b04ed 196 {
bmazzeo 7:e1dfd64eba81 197 mem_address = (uint32_t*) Mem_start + i;
bmazzeo 7:e1dfd64eba81 198 data_value = *((uint32_t*) mem_address);
bmazzeo 7:e1dfd64eba81 199 L_audio_value = (int16_t) ((data_value >> 16) & 0xFFFF);
bmazzeo 7:e1dfd64eba81 200 R_audio_value = (int16_t) (data_value & 0xFFFF);
bmazzeo 7:e1dfd64eba81 201
bmazzeo 7:e1dfd64eba81 202 L_audio_value = L_audio_value / 50;
bmazzeo 7:e1dfd64eba81 203 R_audio_value = R_audio_value / 50;
bmazzeo 7:e1dfd64eba81 204
bmazzeo 7:e1dfd64eba81 205 //sprintf(buf, "%12d", L_audio_value);
bmazzeo 7:e1dfd64eba81 206 //BSP_LCD_DisplayStringAt(0, 60, (uint8_t *) buf, LEFT_MODE);
bmazzeo 7:e1dfd64eba81 207
bmazzeo 7:e1dfd64eba81 208 //sprintf(buf, "%12d", R_audio_value);
bmazzeo 7:e1dfd64eba81 209 //BSP_LCD_DisplayStringAt(0, 80, (uint8_t *) buf, LEFT_MODE);
bmazzeo 7:e1dfd64eba81 210
bmazzeo 7:e1dfd64eba81 211
bmazzeo 7:e1dfd64eba81 212 //L_audio_value = -i;
bmazzeo 7:e1dfd64eba81 213 if (L_audio_value > AUDIO_DRAW_LIMIT) {L_audio_value = AUDIO_DRAW_LIMIT;}
bmazzeo 7:e1dfd64eba81 214 else if (L_audio_value < -AUDIO_DRAW_LIMIT) {L_audio_value = -AUDIO_DRAW_LIMIT;}
bmazzeo 7:e1dfd64eba81 215
bmazzeo 7:e1dfd64eba81 216 if (R_audio_value > AUDIO_DRAW_LIMIT) {R_audio_value = AUDIO_DRAW_LIMIT;}
bmazzeo 7:e1dfd64eba81 217 else if (R_audio_value < -AUDIO_DRAW_LIMIT) {R_audio_value = -AUDIO_DRAW_LIMIT;}
bmazzeo 7:e1dfd64eba81 218
bmazzeo 7:e1dfd64eba81 219 BSP_LCD_DrawPixel(Xpos + i, (uint16_t) ((int16_t) L_Ypos + L_audio_value), LCD_COLOR_WHITE);
bmazzeo 7:e1dfd64eba81 220 BSP_LCD_DrawPixel(Xpos + i, (uint16_t) ((int16_t) R_Ypos + R_audio_value), LCD_COLOR_WHITE);
bmazzeo 6:e689075b04ed 221 }
bmazzeo 6:e689075b04ed 222
bmazzeo 6:e689075b04ed 223 }
bmazzeo 6:e689075b04ed 224
bmazzeo 6:e689075b04ed 225 /* Read data value from SDRAM memory */
bmazzeo 6:e689075b04ed 226 // ret = *(__IO uint32_t*) (hLtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(Ypos*BSP_LCD_GetXSize() + Xpos)));
bmazzeo 6:e689075b04ed 227
bmazzeo 6:e689075b04ed 228
adustm 0:da04816fb411 229 /*-------------------------------------------------------------------------------------
adustm 0:da04816fb411 230 Callbacks implementation:
adustm 0:da04816fb411 231 the callbacks API are defined __weak in the stm32746g_discovery_audio.c file
adustm 0:da04816fb411 232 and their implementation should be done in the user code if they are needed.
adustm 0:da04816fb411 233 Below some examples of callback implementations.
adustm 0:da04816fb411 234 -------------------------------------------------------------------------------------*/
adustm 0:da04816fb411 235 /**
adustm 0:da04816fb411 236 * @brief Manages the DMA Transfer complete interrupt.
adustm 0:da04816fb411 237 * @param None
adustm 0:da04816fb411 238 * @retval None
adustm 0:da04816fb411 239 */
adustm 0:da04816fb411 240 void BSP_AUDIO_IN_TransferComplete_CallBack(void)
adustm 0:da04816fb411 241 {
Jerome Coutant 5:66c230f74325 242 audio_rec_buffer_state = BUFFER_OFFSET_FULL;
adustm 0:da04816fb411 243 }
adustm 0:da04816fb411 244
adustm 0:da04816fb411 245 /**
adustm 0:da04816fb411 246 * @brief Manages the DMA Half Transfer complete interrupt.
adustm 0:da04816fb411 247 * @param None
adustm 0:da04816fb411 248 * @retval None
adustm 0:da04816fb411 249 */
adustm 0:da04816fb411 250 void BSP_AUDIO_IN_HalfTransfer_CallBack(void)
adustm 0:da04816fb411 251 {
Jerome Coutant 5:66c230f74325 252 audio_rec_buffer_state = BUFFER_OFFSET_HALF;
adustm 0:da04816fb411 253 }
adustm 0:da04816fb411 254
Jerome Coutant 5:66c230f74325 255 /**
Jerome Coutant 5:66c230f74325 256 * @brief Audio IN Error callback function.
Jerome Coutant 5:66c230f74325 257 * @param None
Jerome Coutant 5:66c230f74325 258 * @retval None
Jerome Coutant 5:66c230f74325 259 */
Jerome Coutant 5:66c230f74325 260 void BSP_AUDIO_IN_Error_CallBack(void)
adustm 0:da04816fb411 261 {
Jerome Coutant 5:66c230f74325 262 printf("BSP_AUDIO_IN_Error_CallBack\n");
adustm 0:da04816fb411 263 }