Senior Design: Sound Monitor / 4951

Team Riedel - display

Dependencies:   LCD_fonts SPI_TFT_ILI9341 CMSIS_DSP_401_without_cm4 mbed-src SDFileSystem wavfile

audio_if.cpp@13:ab0285338951, 2015-12-14 (annotated)

Committer:
linx0576
Date:
Mon Dec 14 22:13:11 2015 +0000
Revision:
13:ab0285338951
Parent:
10:0986108f8aa3 
update

Who changed what in which revision?

UserRevisionLine numberNew contents of line
EricLew 9:5a860b9c8a6a 1 /**
EricLew 9:5a860b9c8a6a 2 ******************************************************************************
EricLew 9:5a860b9c8a6a 3 * @file /Src/audio_if.c
EricLew 9:5a860b9c8a6a 4 * @author Central Labs
EricLew 9:5a860b9c8a6a 5 * @version V1.0.0
EricLew 9:5a860b9c8a6a 6 * @date 7-May-2015
EricLew 9:5a860b9c8a6a 7 * @brief USB Device Audio interface file.
EricLew 9:5a860b9c8a6a 8 ******************************************************************************
EricLew 9:5a860b9c8a6a 9 @attention
EricLew 9:5a860b9c8a6a 10 *
EricLew 9:5a860b9c8a6a 11 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
EricLew 9:5a860b9c8a6a 12 *
EricLew 9:5a860b9c8a6a 13 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
EricLew 9:5a860b9c8a6a 14 * You may not use this file except in compliance with the License.
EricLew 9:5a860b9c8a6a 15 * You may obtain a copy of the License at:
EricLew 9:5a860b9c8a6a 16 *
EricLew 9:5a860b9c8a6a 17 * http://www.st.com/software_license_agreement_liberty_v2
EricLew 9:5a860b9c8a6a 18 *
EricLew 9:5a860b9c8a6a 19 * Redistribution and use in source and binary forms, with or without modification,
EricLew 9:5a860b9c8a6a 20 * are permitted provided that the following conditions are met:
EricLew 9:5a860b9c8a6a 21 * 1. Redistributions of source code must retain the above copyright notice,
EricLew 9:5a860b9c8a6a 22 * this list of conditions and the following disclaimer.
EricLew 9:5a860b9c8a6a 23 * 2. Redistributions in binary form must reproduce the above copyright notice,
EricLew 9:5a860b9c8a6a 24 * this list of conditions and the following disclaimer in the documentation
EricLew 9:5a860b9c8a6a 25 * and/or other materials provided with the distribution.
EricLew 9:5a860b9c8a6a 26 * 3. Neither the name of STMicroelectronics nor the names of its contributors
EricLew 9:5a860b9c8a6a 27 * may be used to endorse or promote products derived from this software
EricLew 9:5a860b9c8a6a 28 * without specific prior written permission.
EricLew 9:5a860b9c8a6a 29 *
EricLew 9:5a860b9c8a6a 30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
EricLew 9:5a860b9c8a6a 31 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
EricLew 9:5a860b9c8a6a 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
EricLew 9:5a860b9c8a6a 33 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
EricLew 9:5a860b9c8a6a 34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
EricLew 9:5a860b9c8a6a 35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
EricLew 9:5a860b9c8a6a 36 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
EricLew 9:5a860b9c8a6a 37 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
EricLew 9:5a860b9c8a6a 38 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
EricLew 9:5a860b9c8a6a 39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
EricLew 9:5a860b9c8a6a 40 *
EricLew 9:5a860b9c8a6a 41 ******************************************************************************
EricLew 9:5a860b9c8a6a 42 */
EricLew 9:5a860b9c8a6a 43
EricLew 9:5a860b9c8a6a 44 /* Includes ------------------------------------------------------------------*/
EricLew 9:5a860b9c8a6a 45 #include "audio_if.h"
EricLew 9:5a860b9c8a6a 46
EricLew 9:5a860b9c8a6a 47 //uint16_t PDM_Buffer[AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000*64/8];
EricLew 9:5a860b9c8a6a 48 //static uint16_t PCM_Buffer[AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000];
EricLew 9:5a860b9c8a6a 49
EricLew 9:5a860b9c8a6a 50 /* Private typedef -----------------------------------------------------------*/
EricLew 9:5a860b9c8a6a 51 /* Private define ------------------------------------------------------------*/
EricLew 9:5a860b9c8a6a 52 /* Private macro -------------------------------------------------------------*/
EricLew 9:5a860b9c8a6a 53 /* Private function prototypes -----------------------------------------------*/
EricLew 9:5a860b9c8a6a 54 /* Private variables ---------------------------------------------------------*/
EricLew 9:5a860b9c8a6a 55
EricLew 9:5a860b9c8a6a 56
EricLew 9:5a860b9c8a6a 57 /* Private functions ---------------------------------------------------------*/
EricLew 9:5a860b9c8a6a 58 /* This table maps the audio device class setting in 1/256 dB to a
EricLew 9:5a860b9c8a6a 59 * linear 0-64 scaling used in pdm_filter.c. It is computed as
EricLew 9:5a860b9c8a6a 60 * 256*20*log10(index/64). */
EricLew 9:5a860b9c8a6a 61 //const int16_t vol_table[65] =
EricLew 9:5a860b9c8a6a 62 //{ 0x8000, 0xDBE0, 0xE1E6, 0xE56B, 0xE7EB, 0xE9DB, 0xEB70, 0xECC7,
EricLew 9:5a860b9c8a6a 63 //0xEDF0, 0xEEF6, 0xEFE0, 0xF0B4, 0xF176, 0xF228, 0xF2CD, 0xF366,
EricLew 9:5a860b9c8a6a 64 //0xF3F5, 0xF47C, 0xF4FB, 0xF574, 0xF5E6, 0xF652, 0xF6BA, 0xF71C,
EricLew 9:5a860b9c8a6a 65 //0xF778, 0xF7D6, 0xF82D, 0xF881, 0xF8D2, 0xF920, 0xF96B, 0xF9B4,
EricLew 9:5a860b9c8a6a 66 //0xF9FB, 0xFA3F, 0xFA82, 0xFAC2, 0xFB01, 0xFB3E, 0xFB79, 0xFBB3,
EricLew 9:5a860b9c8a6a 67 //0xFBEB, 0xFC22, 0xFC57, 0xFC8C, 0xFCBF, 0xFCF1, 0xFD22, 0xFD51,
EricLew 9:5a860b9c8a6a 68 //0xFD80, 0xFDAE, 0xFDDB, 0xFE07, 0xFE32, 0xFE5D, 0xFE86, 0xFEAF,
EricLew 9:5a860b9c8a6a 69 //0xFED7, 0xFF00, 0xFF25, 0xFF4B, 0xFF70, 0xFF95, 0xFFB9, 0xFFD0,
EricLew 9:5a860b9c8a6a 70 //0x0000 };
EricLew 9:5a860b9c8a6a 71
EricLew 9:5a860b9c8a6a 72 //volatile uint8_t VolumeSetting=64;
EricLew 9:5a860b9c8a6a 73
EricLew 9:5a860b9c8a6a 74 /**
EricLew 9:5a860b9c8a6a 75 * @brief Initializes the AUDIO media low layer.
EricLew 9:5a860b9c8a6a 76 * @param AudioFreq: Audio frequency used to play the audio stream.
EricLew 9:5a860b9c8a6a 77 * @param BitRes: desired bit resolution
EricLew 9:5a860b9c8a6a 78 * @param ChnlNbr: number of channel to be configured
EricLew 9:5a860b9c8a6a 79 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 80 */
EricLew 9:5a860b9c8a6a 81 int8_t Audio_Init(void)
EricLew 9:5a860b9c8a6a 82 {
EricLew 9:5a860b9c8a6a 83 return BSP_AUDIO_IN_Init(48000, 16, 1);
linx0576 10:0986108f8aa3 84
EricLew 9:5a860b9c8a6a 85 }
EricLew 9:5a860b9c8a6a 86
EricLew 9:5a860b9c8a6a 87
EricLew 9:5a860b9c8a6a 88
EricLew 9:5a860b9c8a6a 89 /**
EricLew 9:5a860b9c8a6a 90 * @brief Start audio recording engine
EricLew 9:5a860b9c8a6a 91 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 92 */
EricLew 9:5a860b9c8a6a 93 int8_t Audio_Record(uint16_t * recbuff)
EricLew 9:5a860b9c8a6a 94 {
EricLew 9:5a860b9c8a6a 95 int8_t res = BSP_AUDIO_IN_Record(recbuff, 2048);
EricLew 9:5a860b9c8a6a 96 // AudioProcess(pbuf, recbuff);
EricLew 9:5a860b9c8a6a 97 return res;
EricLew 9:5a860b9c8a6a 98 }
EricLew 9:5a860b9c8a6a 99
EricLew 9:5a860b9c8a6a 100 /**
EricLew 9:5a860b9c8a6a 101 * @brief Controls AUDIO Volume.
EricLew 9:5a860b9c8a6a 102 * @param vol: Volume level
EricLew 9:5a860b9c8a6a 103 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 104 */
EricLew 9:5a860b9c8a6a 105 //int8_t Audio_VolumeCtl(int16_t Volume)
EricLew 9:5a860b9c8a6a 106 //{
EricLew 9:5a860b9c8a6a 107 // /* Call low layer volume setting function */
EricLew 9:5a860b9c8a6a 108 // int j;
EricLew 9:5a860b9c8a6a 109 //
EricLew 9:5a860b9c8a6a 110 // j = 0;
EricLew 9:5a860b9c8a6a 111 // /* Find the setting nearest to the desired setting */
EricLew 9:5a860b9c8a6a 112 // while(j<64 &&
EricLew 9:5a860b9c8a6a 113 // abs(Volume-vol_table[j]) > abs(Volume-vol_table[j+1])) {
EricLew 9:5a860b9c8a6a 114 // j++;
EricLew 9:5a860b9c8a6a 115 // }
EricLew 9:5a860b9c8a6a 116 // /* Now do the volume adjustment */
EricLew 9:5a860b9c8a6a 117 // VolumeSetting = (uint8_t)j;
EricLew 9:5a860b9c8a6a 118 // return BSP_AUDIO_IN_SetVolume(VolumeSetting);
EricLew 9:5a860b9c8a6a 119 //
EricLew 9:5a860b9c8a6a 120 //
EricLew 9:5a860b9c8a6a 121 //}
EricLew 9:5a860b9c8a6a 122
EricLew 9:5a860b9c8a6a 123 /**
EricLew 9:5a860b9c8a6a 124 * @brief Controls AUDIO Mute.
EricLew 9:5a860b9c8a6a 125 * @param cmd: Command opcode
EricLew 9:5a860b9c8a6a 126 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 127 */
EricLew 9:5a860b9c8a6a 128 //int8_t Audio_MuteCtl(uint8_t cmd)
EricLew 9:5a860b9c8a6a 129 //{
EricLew 9:5a860b9c8a6a 130 // return AUDIO_OK;
EricLew 9:5a860b9c8a6a 131 //}
EricLew 9:5a860b9c8a6a 132
EricLew 9:5a860b9c8a6a 133
EricLew 9:5a860b9c8a6a 134 /**
EricLew 9:5a860b9c8a6a 135 * @brief Stops audio acquisition
EricLew 9:5a860b9c8a6a 136 * @param none
EricLew 9:5a860b9c8a6a 137 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 138 */
EricLew 9:5a860b9c8a6a 139 int8_t Audio_Stop(void)
EricLew 9:5a860b9c8a6a 140 {
EricLew 9:5a860b9c8a6a 141 return BSP_AUDIO_IN_Stop();
EricLew 9:5a860b9c8a6a 142
EricLew 9:5a860b9c8a6a 143 }
EricLew 9:5a860b9c8a6a 144
EricLew 9:5a860b9c8a6a 145 /**
EricLew 9:5a860b9c8a6a 146 * @brief Pauses audio acquisition
EricLew 9:5a860b9c8a6a 147 * @param none
EricLew 9:5a860b9c8a6a 148 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 149 */
EricLew 9:5a860b9c8a6a 150 //
EricLew 9:5a860b9c8a6a 151 //int8_t Audio_Pause(void)
EricLew 9:5a860b9c8a6a 152 //{
EricLew 9:5a860b9c8a6a 153 // return 0;
EricLew 9:5a860b9c8a6a 154 //}
EricLew 9:5a860b9c8a6a 155
EricLew 9:5a860b9c8a6a 156
EricLew 9:5a860b9c8a6a 157 /**
EricLew 9:5a860b9c8a6a 158 * @brief Resumes audio acquisition
EricLew 9:5a860b9c8a6a 159 * @param none
EricLew 9:5a860b9c8a6a 160 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 161 */
EricLew 9:5a860b9c8a6a 162 //int8_t Audio_Resume(void)
EricLew 9:5a860b9c8a6a 163 //{
EricLew 9:5a860b9c8a6a 164 // return AUDIO_OK;
EricLew 9:5a860b9c8a6a 165 //}
EricLew 9:5a860b9c8a6a 166
EricLew 9:5a860b9c8a6a 167 /**
EricLew 9:5a860b9c8a6a 168 * @brief Manages command from usb
EricLew 9:5a860b9c8a6a 169 * @param None
EricLew 9:5a860b9c8a6a 170 * @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
EricLew 9:5a860b9c8a6a 171 */
EricLew 9:5a860b9c8a6a 172 //
EricLew 9:5a860b9c8a6a 173 //int8_t Audio_CommandMgr(uint8_t cmd)
EricLew 9:5a860b9c8a6a 174 //{
EricLew 9:5a860b9c8a6a 175 // return AUDIO_OK;
EricLew 9:5a860b9c8a6a 176 //}
EricLew 9:5a860b9c8a6a 177 //
EricLew 9:5a860b9c8a6a 178 //void AudioProcess(uint16_t * pbuf, uint16_t * recbuff)
EricLew 9:5a860b9c8a6a 179 //{
EricLew 9:5a860b9c8a6a 180 // BSP_AUDIO_IN_PDMToPCM(pbuf,recbuff);
EricLew 9:5a860b9c8a6a 181 // // need to copy recbuff to final output buff (in chunks)
EricLew 9:5a860b9c8a6a 182 //}
EricLew 9:5a860b9c8a6a 183
EricLew 9:5a860b9c8a6a 184 void PrintData(uint16_t * recbuff)
EricLew 9:5a860b9c8a6a 185 {
EricLew 9:5a860b9c8a6a 186 for (int i=0; i < AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000; ++i) {
EricLew 9:5a860b9c8a6a 187 if (!(i%10))
EricLew 9:5a860b9c8a6a 188 pc.printf("\r\n\t");
EricLew 9:5a860b9c8a6a 189 pc.printf("%d ", recbuff[i]);
EricLew 9:5a860b9c8a6a 190 }
EricLew 9:5a860b9c8a6a 191 pc.printf("\r\n\r\n");
EricLew 9:5a860b9c8a6a 192 }
EricLew 9:5a860b9c8a6a 193
EricLew 9:5a860b9c8a6a 194 void WriteData(uint16_t * recbuff)
EricLew 9:5a860b9c8a6a 195 {
EricLew 9:5a860b9c8a6a 196
EricLew 9:5a860b9c8a6a 197 //Try to mount the SD card
EricLew 9:5a860b9c8a6a 198 pc.printf("Mounting SD card...");
EricLew 9:5a860b9c8a6a 199 if (sd.mount() != 0) {
EricLew 9:5a860b9c8a6a 200 pc.printf("failed!\r\n");
EricLew 9:5a860b9c8a6a 201 return;
EricLew 9:5a860b9c8a6a 202 }
EricLew 9:5a860b9c8a6a 203 pc.printf("mounted successfully!\r\n");
EricLew 9:5a860b9c8a6a 204
EricLew 9:5a860b9c8a6a 205 // write event to log
EricLew 9:5a860b9c8a6a 206 FILE *fp = fopen("/sd/event_log.txt", "a");
EricLew 9:5a860b9c8a6a 207 if (fp != NULL) {
EricLew 9:5a860b9c8a6a 208 for (int i=0; i < AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000; ++i) {
EricLew 9:5a860b9c8a6a 209 if (!(i%10))
EricLew 9:5a860b9c8a6a 210 fprintf(fp, "\r\n");
EricLew 9:5a860b9c8a6a 211 fprintf(fp, "%d ", recbuff[i]);
EricLew 9:5a860b9c8a6a 212 }
EricLew 9:5a860b9c8a6a 213 fprintf(fp, "\r\n\r\n");
EricLew 9:5a860b9c8a6a 214 fprintf(fp, "Woohoo! I made a file!\r\n");
EricLew 9:5a860b9c8a6a 215 fclose(fp);
EricLew 9:5a860b9c8a6a 216 PrintData(recbuff);
EricLew 9:5a860b9c8a6a 217 pc.printf("success!\r\n");
EricLew 9:5a860b9c8a6a 218 } else {
EricLew 9:5a860b9c8a6a 219 pc.printf("failed!\r\n");
EricLew 9:5a860b9c8a6a 220 }
EricLew 9:5a860b9c8a6a 221
EricLew 9:5a860b9c8a6a 222 pc.printf("creating WAV file");
EricLew 9:5a860b9c8a6a 223 static const char *target_filename = "/sd/rec-test.wav";
EricLew 9:5a860b9c8a6a 224 rec(target_filename, recbuff, 48);
EricLew 9:5a860b9c8a6a 225
EricLew 9:5a860b9c8a6a 226
EricLew 9:5a860b9c8a6a 227 sd.unmount();
EricLew 9:5a860b9c8a6a 228 pc.printf("sd card unmounted\r\n\r\n");
EricLew 9:5a860b9c8a6a 229
EricLew 9:5a860b9c8a6a 230 }
EricLew 9:5a860b9c8a6a 231
EricLew 9:5a860b9c8a6a 232 #define WAVFILE_ERROR_PRINT(RESULT) \
EricLew 9:5a860b9c8a6a 233 do { \
EricLew 9:5a860b9c8a6a 234 WavFileResult R = RESULT; \
EricLew 9:5a860b9c8a6a 235 if (R != WavFileResultOK) { \
EricLew 9:5a860b9c8a6a 236 char wavfile_error_print_text[BUFSIZ]; \
EricLew 9:5a860b9c8a6a 237 wavfile_result_string(R, wavfile_error_print_text, sizeof(wavfile_error_print_text)); \
EricLew 9:5a860b9c8a6a 238 printf("%s (code=%d)\r\n", wavfile_error_print_text, R); \
EricLew 9:5a860b9c8a6a 239 return 1; \
EricLew 9:5a860b9c8a6a 240 } \
EricLew 9:5a860b9c8a6a 241 } while(0)
EricLew 9:5a860b9c8a6a 242
EricLew 9:5a860b9c8a6a 243 int rec(const char *filename, uint16_t * recbuff, uint16_t size)
EricLew 9:5a860b9c8a6a 244 {
EricLew 9:5a860b9c8a6a 245 WavFileResult result;
EricLew 9:5a860b9c8a6a 246 wavfile_info_t info;
EricLew 9:5a860b9c8a6a 247 wavfile_data_t data;
EricLew 9:5a860b9c8a6a 248
EricLew 9:5a860b9c8a6a 249 WAVFILE_INFO_AUDIO_FORMAT(&info) = 1;
EricLew 9:5a860b9c8a6a 250 WAVFILE_INFO_NUM_CHANNELS(&info) = 1;
EricLew 9:5a860b9c8a6a 251 WAVFILE_INFO_SAMPLE_RATE(&info) = 1000;
EricLew 9:5a860b9c8a6a 252 WAVFILE_INFO_BYTE_RATE(&info) = 2000;
EricLew 9:5a860b9c8a6a 253 WAVFILE_INFO_BLOCK_ALIGN(&info) = 2;
EricLew 9:5a860b9c8a6a 254 WAVFILE_INFO_BITS_PER_SAMPLE(&info) = 16;
EricLew 9:5a860b9c8a6a 255
EricLew 9:5a860b9c8a6a 256 WAVFILE *wf = wavfile_open(filename, WavFileModeWrite, &result);
EricLew 9:5a860b9c8a6a 257 WAVFILE_ERROR_PRINT(result);
EricLew 9:5a860b9c8a6a 258 WAVFILE_ERROR_PRINT(wavfile_write_info(wf, &info));
EricLew 9:5a860b9c8a6a 259
EricLew 9:5a860b9c8a6a 260 pc.printf("[REC:%s]\r\n", filename);
EricLew 9:5a860b9c8a6a 261 pc.printf("\tWAVFILE_INFO_AUDIO_FORMAT(&info) = %d\r\n", WAVFILE_INFO_AUDIO_FORMAT(&info));
EricLew 9:5a860b9c8a6a 262 pc.printf("\tWAVFILE_INFO_NUM_CHANNELS(&info) = %d\r\n", WAVFILE_INFO_NUM_CHANNELS(&info));
EricLew 9:5a860b9c8a6a 263 pc.printf("\tWAVFILE_INFO_SAMPLE_RATE(&info) = %d\r\n", WAVFILE_INFO_SAMPLE_RATE(&info));
EricLew 9:5a860b9c8a6a 264 pc.printf("\tWAVFILE_INFO_BYTE_RATE(&info) = %d\r\n", WAVFILE_INFO_BYTE_RATE(&info));
EricLew 9:5a860b9c8a6a 265 pc.printf("\tWAVFILE_INFO_BLOCK_ALIGN(&info) = %d\r\n", WAVFILE_INFO_BLOCK_ALIGN(&info));
EricLew 9:5a860b9c8a6a 266 pc.printf("\tWAVFILE_INFO_BITS_PER_SAMPLE(&info) = %d\r\n", WAVFILE_INFO_BITS_PER_SAMPLE(&info));
EricLew 9:5a860b9c8a6a 267
EricLew 9:5a860b9c8a6a 268 // const int interval_us = 1000000 / WAVFILE_INFO_SAMPLE_RATE(&info);
EricLew 9:5a860b9c8a6a 269
EricLew 9:5a860b9c8a6a 270 int dropout = 0;
EricLew 9:5a860b9c8a6a 271 // unsigned int count = 0;
EricLew 9:5a860b9c8a6a 272 WAVFILE_DATA_NUM_CHANNELS(&data) = 1;
EricLew 9:5a860b9c8a6a 273 // for (int i=0; i<size; ++i) {
EricLew 9:5a860b9c8a6a 274 // WAVFILE_DATA_CHANNEL_DATA(&data, 0) = 0; //buffer[rp];
EricLew 9:5a860b9c8a6a 275 // WAVFILE_ERROR_PRINT(wavfile_write_data(wf, &data));
EricLew 9:5a860b9c8a6a 276 WAVFILE_ERROR_PRINT(wavfile_write_data_bulk_uint16(wf, recbuff, AUDIO_CHANNELS, size));
EricLew 9:5a860b9c8a6a 277 // }
EricLew 9:5a860b9c8a6a 278
EricLew 9:5a860b9c8a6a 279 pc.printf("\t-- Rec done. (dropout=%d) --\r\n", dropout);
EricLew 9:5a860b9c8a6a 280
EricLew 9:5a860b9c8a6a 281 WAVFILE_ERROR_PRINT(wavfile_close(wf));
EricLew 9:5a860b9c8a6a 282 return 0;
EricLew 9:5a860b9c8a6a 283 }
EricLew 9:5a860b9c8a6a 284
EricLew 9:5a860b9c8a6a 285
EricLew 9:5a860b9c8a6a 286
EricLew 9:5a860b9c8a6a 287
EricLew 9:5a860b9c8a6a 288 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
EricLew 9:5a860b9c8a6a 289