/**
* @brief Play audio stream
* @param frequency: Audio frequency used to play the audio stream.
* @retval Audio state.
*/
AUDIO_RECORDER_ErrorTypdef AUDIO_RECORDER_StartRec(uint32_t frequency)
{
uint32_t byteswritten = 0;
/* Initialize header file */
WavProcess_EncInit(DEFAULT_AUDIO_IN_FREQ, pHeaderBuff);
/* Write header file */
if(f_write(&wav_file, pHeaderBuff, 44, (void*)&byteswritten) == FR_OK)
{
if(byteswritten != 0)
{
BSP_AUDIO_IN_Init(INPUT_DEVICE_DIGITAL_MICROPHONE_2, haudio.in.volume, DEFAULT_AUDIO_IN_FREQ);
BSP_AUDIO_IN_Record((uint16_t*)&haudio.buff[0], AUDIO_IN_BUFFER_SIZE/2);
if(haudio.in.state == AUDIO_RECORDER_SUSPENDED)
{
osThreadResume(AudioThreadId);
}
haudio.in.state = AUDIO_RECORDER_RECORDING;
haudio.in.fptr = byteswritten;
return AUDIO_RECORDER_ERROR_NONE;
}
}
return AUDIO_RECORDER_ERROR_IO;
}
/**
* @brief Play audio stream
* @param frequency: Audio frequency used to play the audio stream.
* @retval Audio state.
*/
AUDIO_RECORDER_ErrorTypdef AUDIO_RECORDER_StartRec(uint32_t frequency)
{
uint32_t byteswritten = 0;
/* Initialize header file */
WavProcess_EncInit(DEFAULT_AUDIO_IN_FREQ, pHeaderBuff);
haudio.ppcm = 0;
/* Write header file */
if(f_write(&wav_file, pHeaderBuff, 44, (void*)&byteswritten) == FR_OK)
{
if(byteswritten != 0)
{
BSP_AUDIO_IN_Init(DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR);
BSP_AUDIO_IN_Record((uint16_t*)&haudio.pdm[0], AUDIO_IN_PDM_BUFFER_SIZE);
if(haudio.in.state == AUDIO_RECORDER_SUSPENDED)
{
osThreadResume(AudioThreadId);
}
haudio.in.state = AUDIO_RECORDER_RECORDING;
haudio.in.fptr = byteswritten;
return AUDIO_RECORDER_ERROR_NONE;
}
}
return AUDIO_RECORDER_ERROR_IO;
}
/**
* @brief Starts Audio streaming.
* @param None
* @retval Audio error
*/
AUDIO_ErrorTypeDef AUDIO_REC_Start(void)
{
uint32_t byteswritten = 0;
uint8_t str[FILEMGR_FILE_NAME_SIZE + 20];
uwVolume = 100;
/* Create a new file system */
if(f_open(&WavFile, REC_WAVE_NAME, FA_CREATE_ALWAYS | FA_WRITE) == FR_OK)
{
/* Initialize header file */
WavProcess_EncInit(DEFAULT_AUDIO_IN_FREQ, pHeaderBuff);
/* Write header file */
if(f_write(&WavFile, pHeaderBuff, 44, (void*)&byteswritten) == FR_OK)
{
AudioState = AUDIO_STATE_PRERECORD;
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
sprintf((char *)str, "Recording file: %s",
(char *)REC_WAVE_NAME);
BSP_LCD_ClearStringLine(4);
BSP_LCD_DisplayStringAtLine(4, str);
BSP_LCD_SetTextColor(LCD_COLOR_CYAN);
sprintf((char *)str, "Sample rate : %d Hz", (int)DEFAULT_AUDIO_IN_FREQ);
BSP_LCD_ClearStringLine(6);
BSP_LCD_DisplayStringAtLine(6, str);
sprintf((char *)str, "Channels number : %d", (int)DEFAULT_AUDIO_IN_CHANNEL_NBR);
BSP_LCD_ClearStringLine(7);
BSP_LCD_DisplayStringAtLine(7, str);
sprintf((char *)str, "Volume : %d ", (int)uwVolume);
BSP_LCD_ClearStringLine(7);
BSP_LCD_DisplayStringAtLine(7, str);
sprintf((char *)str, "File Size :");
BSP_LCD_ClearStringLine(8);
BSP_LCD_DisplayStringAtLine(8, str);
AUDIO_REC_DisplayButtons();
BSP_LCD_DisplayStringAt(250, LINE(14), (uint8_t *)" [RECORD]", LEFT_MODE);
{
if(byteswritten != 0)
{
BSP_AUDIO_IN_Init(DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR);
BSP_AUDIO_IN_Record((uint16_t*)&BufferCtl.pdm_buff[0], AUDIO_IN_PDM_BUFFER_SIZE);
BufferCtl.fptr = byteswritten;
BufferCtl.pcm_ptr = 0;
BufferCtl.offset = 0;
BufferCtl.wr_state = BUFFER_EMPTY;
return AUDIO_ERROR_NONE;
}
}
}
}
return AUDIO_ERROR_IO;
}
/**
* @brief Update the recorded data.
* @param None
* @retval None
*/
void WaveRecorderProcess(void)
{
/* Current size of the recorded buffer */
uint32_t byteswritten = 0;
WaveCounter = 0;
LEDsState = LEDS_OFF;
/* Remove Wave file if it exists on USB Flash Disk */
f_unlink(REC_WAVE_NAME);
/* Open the file to write on it */
if((AppliState == APPLICATION_IDLE) || (f_open(&WavFile, REC_WAVE_NAME, FA_CREATE_ALWAYS | FA_WRITE) != FR_OK))
{
while(1)
{
/* Toggle LED5 in infinite loop to signal that: USB Flash Disk is not connected/removed
or an issue has occurred when creating/opening Wave file */
BSP_LED_Toggle(LED5);
}
}
else
{
WaveRecStatus = 1;
}
/* Initialize header file */
WavProcess_EncInit(DEFAULT_AUDIO_IN_FREQ, pHeaderBuff);
/* Write the header Wave */
f_write(&WavFile, pHeaderBuff, 44, (void *)&byteswritten);
/* Increment the Wave counter */
BufferCtl.fptr = byteswritten;
BufferCtl.offset = BUFFER_OFFSET_NONE;
BSP_AUDIO_IN_Init(DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR);
BSP_AUDIO_IN_Record((uint16_t*)&InternalBuffer[0], INTERNAL_BUFF_SIZE);
/* Reset the time recording base variable */
TimeRecBase = 0;
ITCounter = 0;
LEDsState = LED3_TOGGLE;
while(AppliState != APPLICATION_IDLE)
{
/* Wait for the recording time */
if(TimeRecBase <= DEFAULT_TIME_REC)
{
/* Check if there are Data to write in Usb Key */
if(AUDIODataReady == 1)
{
/* write buffer in file */
res = f_write(&WavFile, (uint8_t*)(WrBuffer+AUDIOBuffOffset), WR_BUFFER_SIZE, (void*)&byteswritten);
if(res != FR_OK)
{
Error_Handler();
}
BufferCtl.fptr += byteswritten;
AUDIODataReady = 0;
}
/* User button pressed */
if(CmdIndex != CMD_RECORD)
{
/* Stop Audio Recording */
WaveRecorderStop();
/* Switch Command Index to Play */
CmdIndex = CMD_PLAY;
/* Toggoling LED6 to signal Play */
LEDsState = LED6_TOGGLE;
break;
}
}
else /* End of recording time DEFAULT_TIME_REC */
{
/* Stop Audio Recording */
WaveRecorderStop();
/* Change Command Index to Stop */
CmdIndex = CMD_STOP;
/* Toggoling LED4 to signal Stop */
LEDsState = LED4_TOGGLE;
AUDIODataReady = 0;
break;
}
}
/* Update the data length in the header of the recorded Wave */
f_lseek(&WavFile, 0);
/* Parse the wav file header and extract required information */
WavProcess_HeaderUpdate(pHeaderBuff, &WaveFormat);
f_write(&WavFile, pHeaderBuff, 44, (void*)&byteswritten);
/* Close file and unmount MyFilesystem */
f_close (&WavFile);
f_mount(NULL, 0, 1);
/* Change Command Index to Play */
CmdIndex = CMD_PLAY;
}
