/**
* @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 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 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;
}
/**
* @brief Test Audio Hardware.
* The main objective of this test is to check the hardware connection of the
* Audio peripheral.
* @param None
* @retval None
*/
void AudioRecord_Test(void)
{
BufferCtl.offset = BUFFER_OFFSET_NONE;
if(BSP_AUDIO_IN_Init(DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR) != AUDIO_OK)
{
/* Record Error */
Error_Handler();
}
/* Turn ON LED3: start record */
BSP_LED_On(LED3);
/* Start the record */
if (BSP_AUDIO_IN_Record((uint16_t*)&InternalBuffer[0], INTERNAL_BUFF_SIZE) != AUDIO_OK)
{
/* Record Error */
Error_Handler();
}
BufferCtl.fptr = 0;
AUDIODataReady = 0;
/* Wait for the data to be ready with PCM form */
while (AUDIODataReady != 2)
{
if(BufferCtl.offset == BUFFER_OFFSET_HALF)
{
/* PDM to PCM data convert */
BSP_AUDIO_IN_PDMToPCM((uint16_t*)&InternalBuffer[0], (uint16_t*)&RecBuf[0]);
/* Copy PCM data in internal buffer */
memcpy((uint16_t*)&WrBuffer[ITCounter * (PCM_OUT_SIZE*2)], RecBuf, PCM_OUT_SIZE*4);
BufferCtl.offset = BUFFER_OFFSET_NONE;
if(ITCounter == (WR_BUFFER_SIZE/(PCM_OUT_SIZE*4))-1)
{
AUDIODataReady = 1;
AUDIOBuffOffset = 0;
ITCounter++;
}
else if(ITCounter == (WR_BUFFER_SIZE/(PCM_OUT_SIZE*2))-1)
{
AUDIODataReady = 2;
AUDIOBuffOffset = WR_BUFFER_SIZE/2;
ITCounter = 0;
}
else
{
ITCounter++;
}
}
if(BufferCtl.offset == BUFFER_OFFSET_FULL)
{
/* PDM to PCM data convert */
BSP_AUDIO_IN_PDMToPCM((uint16_t*)&InternalBuffer[INTERNAL_BUFF_SIZE/2], (uint16_t*)&RecBuf[0]);
/* Copy PCM data in internal buffer */
memcpy((uint16_t*)&WrBuffer[ITCounter * (PCM_OUT_SIZE*2)], RecBuf, PCM_OUT_SIZE*4);
BufferCtl.offset = BUFFER_OFFSET_NONE;
if(ITCounter == (WR_BUFFER_SIZE/(PCM_OUT_SIZE*4))-1)
{
AUDIODataReady = 1;
AUDIOBuffOffset = 0;
ITCounter++;
}
else if(ITCounter == (WR_BUFFER_SIZE/(PCM_OUT_SIZE*2))-1)
{
AUDIODataReady = 2;
AUDIOBuffOffset = WR_BUFFER_SIZE/2;
ITCounter = 0;
}
else
{
ITCounter++;
}
}
};
/* Stop audio record */
if (BSP_AUDIO_IN_Stop() != AUDIO_OK)
{
/* Record Error */
Error_Handler();
}
/* Turn OFF LED3: record stopped */
BSP_LED_Off(LED3);
/* Turn ON LED6: play recorded file */
BSP_LED_On(LED6);
/* Play in the loop the recorded file */
/* Set variable to indicate play from record buffer */
AudioTest = 1;
/* Set variable used to stop player before starting */
UserPressButton = 0;
/* Initialize audio IN at REC_FREQ */
BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_AUTO, 70, DEFAULT_AUDIO_IN_FREQ);
/* Set the total number of data to be played */
AudioTotalSize = AUDIODATA_SIZE * WR_BUFFER_SIZE;
/* Update the remaining number of data to be played */
AudioRemSize = 0;
/* Update the WrBuffer audio pointer position */
CurrentPos = (uint16_t *)(WrBuffer);
/* Play the recorded buffer */
BSP_AUDIO_OUT_Play(WrBuffer , AudioTotalSize);
while(!UserPressButton)
{
}
/* Stop Player before close Test */
if (BSP_AUDIO_OUT_Stop(CODEC_PDWN_SW) != AUDIO_OK)
{
/* Audio Stop error */
Error_Handler();
}
}
/**
* @brief Audio Play demo
* @param None
* @retval None
*/
void AudioRec_demo (void)
{
uint16_t NbRecord_done = 0;
uint8_t FreqStr[256] = {0};
AudioRec_State = REC_NONE_STATE;
buffer_ctl.rec_length = 0;
/* Initialize AudioRecFullBuff at the address of the audio_play reader */
AudioRecFullBuff_addr = AUDIO_REC_START_ADDR;
AudioRec_SetHint();
#ifdef JOYSTICK
/* Initialize Joystick */
if (BSP_JOY_Init(JOY_MODE_GPIO) != IO_OK)
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 95, (uint8_t *)"ERROR", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 80, (uint8_t *)"Joystick cannot be initialized", CENTER_MODE);
}
#endif
/* Initialize Audio Recorder */
if (BSP_AUDIO_IN_Init(DEFAULT_AUDIO_IN_FREQ, DEFAULT_AUDIO_IN_BIT_RESOLUTION, DEFAULT_AUDIO_IN_CHANNEL_NBR) == AUDIO_OK)
{
AudioRec_State = REC_RESET_STATE;
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 95, (uint8_t *)" AUDIO RECORD INIT OK ", CENTER_MODE);
}
else
{
AudioRec_State = REC_ERROR_STATE;
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 95, (uint8_t *)" AUDIO RECORD INIT FAIL", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 80, (uint8_t *)" Try to reset board ", CENTER_MODE);
}
/* Infinite loop */
while (buffer_ctl.rec_length < AUDIO_REC_TOTAL_SIZE)
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
if (buffer_ctl.it_state == TRANSFER_HALF)
{
/* PDM to PCM data convert */
BSP_AUDIO_IN_PDMToPCM((uint16_t*)&buffer_ctl.pdm_buff[0],
&buffer_ctl.pcm_buff[buffer_ctl.pcm_ptr]);
buffer_ctl.pcm_ptr+= AUDIO_IN_PDM_BUFFER_SIZE/4/2;
if(buffer_ctl.pcm_ptr == AUDIO_IN_PCM_BUFFER_SIZE/2)
{
buffer_ctl.wr_state = BUFFER_FULL;
buffer_ctl.offset = 0;
}
if(buffer_ctl.pcm_ptr >= AUDIO_IN_PCM_BUFFER_SIZE)
{
buffer_ctl.wr_state = BUFFER_FULL;
buffer_ctl.offset = AUDIO_IN_PCM_BUFFER_SIZE/2;
buffer_ctl.pcm_ptr = 0;
}
buffer_ctl.it_state = TRANSFER_NONE;
}
if (buffer_ctl.it_state == TRANSFER_FULL)
{
/* PDM to PCM data convert */
if (BSP_AUDIO_IN_PDMToPCM((uint16_t*)&buffer_ctl.pdm_buff[INTERNAL_BUFF_SIZE/2], &buffer_ctl.pcm_buff[buffer_ctl.pcm_ptr]) == 0)
{
buffer_ctl.pcm_ptr+= AUDIO_IN_PDM_BUFFER_SIZE/4/2;
if(buffer_ctl.pcm_ptr == AUDIO_IN_PCM_BUFFER_SIZE/2)
{
buffer_ctl.wr_state = BUFFER_FULL;
buffer_ctl.offset = 0;
}
if(buffer_ctl.pcm_ptr >= AUDIO_IN_PCM_BUFFER_SIZE)
{
buffer_ctl.wr_state = BUFFER_FULL;
buffer_ctl.offset = AUDIO_IN_PCM_BUFFER_SIZE/2;
buffer_ctl.pcm_ptr = 0;
}
}
buffer_ctl.it_state = TRANSFER_NONE;
NbRecord_done++;
}
/* PCM buffer is full, copy it into the record_file */
if (buffer_ctl.wr_state == BUFFER_FULL)
{
memcpy((uint32_t *)AudioRecFullBuff_addr, (uint8_t*)(buffer_ctl.pcm_buff + buffer_ctl.offset), AUDIO_IN_PCM_BUFFER_SIZE);
AudioRecFullBuff_addr += AUDIO_IN_PCM_BUFFER_SIZE;
buffer_ctl.rec_length += AUDIO_IN_PCM_BUFFER_SIZE;
buffer_ctl.wr_state = BUFFER_EMPTY;
}
#ifdef JOYSTICK
/* Get the Joystick State */
JoyState = BSP_JOY_GetState();
switch (JoyState)
{
case JOY_SEL:
#endif
if (AudioRec_State == REC_RESET_STATE)
{
/* 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() - 80, (uint8_t *)" RECORDING... ", CENTER_MODE);
/* Start Recording */
buffer_ctl.rec_length = 0;
buffer_ctl.wr_state = BUFFER_EMPTY;
buffer_ctl.it_state = TRANSFER_NONE;
BSP_AUDIO_IN_Record((uint16_t*)&buffer_ctl.pdm_buff[0], INTERNAL_BUFF_SIZE);
AudioRec_State = RECORD_ONGOING;
}
#ifdef JOYSTICK
break;
default:
break;
}
#endif
if (CheckForUserInput() > 0)
{
/* Stop recorder and exit the test (go to next test) */
BSP_AUDIO_IN_Stop();
return;
}
}
/* Stop recorder once buffer_ctl.rec_length < AUDIO_REC_TOTAL_SIZE*/
BSP_AUDIO_IN_Stop();
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
sprintf((char*)FreqStr, "RECORDING DONE, %d frames, START PLAYBACK", NbRecord_done);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 65, (uint8_t *)FreqStr, CENTER_MODE);
NbRecord_done = buffer_ctl.rec_length / (DEFAULT_AUDIO_IN_FREQ * DEFAULT_AUDIO_IN_CHANNEL_NBR * 2);
sprintf((char*)FreqStr, "Elapsed_time: %d frames", NbRecord_done);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 45, (uint8_t *)FreqStr, CENTER_MODE);
/* -----------Start Playback -------------- */
/* Initialize audio IN at REC_FREQ*/
if(BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_HEADPHONE, 95, DEFAULT_AUDIO_IN_FREQ/2) == 0)
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 95, (uint8_t *)" AUDIO CODEC OK ", CENTER_MODE);
}
else
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 95, (uint8_t *)" AUDIO CODEC FAIL ", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 80, (uint8_t *)" Try to reset board ", CENTER_MODE);
}
/* Play the recorded buffer*/
if(AUDIO_Play_Start((uint32_t *)AUDIO_REC_START_ADDR, (uint32_t)AUDIO_REC_TOTAL_SIZE) == 0)
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 95, (uint8_t *)" AUDIO PLAYBACK OK ", CENTER_MODE);
} else
{
BSP_LCD_SetBackColor(LCD_COLOR_WHITE);
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 95, (uint8_t *)" AUDIO PLAYBACK FAIL ", CENTER_MODE);
}
BSP_LCD_DisplayStringAt(0, BSP_LCD_GetYSize() - 25, (uint8_t *)"PLAYBACK DONE", CENTER_MODE);
while (1)
{
/* Toggle LED4 */
BSP_LED_Toggle(LED4);
/* Insert 100 ms delay */
HAL_Delay(100);
if (CheckForUserInput() > 0)
{
/* Set LED4 */
BSP_LED_On(LED4);
/* Stop recorder */
BSP_AUDIO_IN_Stop();
/* Stop Player before close Test */
BSP_AUDIO_OUT_Stop(CODEC_PDWN_SW);
return;
}
}
}
