extern void application_task(void)
{
UINT bytesread = 0;
WAVE_FormatTypeDef waveformat;
switch (appState)
{
case APPSTATE_IDLE:
break;
case APPSTATE_MOUNT_FS:
if (f_mount(&USBDISKFatFs, (TCHAR const*)USBDISKPath, 0 ) != FR_OK )
{
/* FatFs initialization fails */
Error_Handler();
}
else
{
appState = APPSTATE_PLAY;
}
break;
case APPSTATE_UMOUNT_FS:
f_mount(NULL, (TCHAR const*)"", 0);
appState = APPSTATE_IDLE;
break;
case APPSTATE_WRITE:
if (f_open(&FileRead, WAVE_NAME_COMPLETO, FA_READ) != FR_OK)
{
Error_Handler();
}
else
{
/* Read sizeof(WaveFormat) from the selected file */
f_read (&FileRead, &waveformat, sizeof(waveformat), &bytesread);
WaveRecord(waveformat, getDataCB);
f_close(&FileRead);
}
appState = APPSTATE_PLAY;
break;
case APPSTATE_PLAY:
if (f_open(&FileRead, WAVE_NAME_COMPLETO, FA_READ) != FR_OK)
{
Error_Handler();
}
else
{
/* Read sizeof(WaveFormat) from the selected file */
f_read (&FileRead, &waveformat, sizeof(waveformat), &bytesread);
WavePlayerStart(waveformat, getDataCB, 70);
f_close(&FileRead);
}
break;
default:
appState = APPSTATE_IDLE;
break;
}
}
extern void application_task(void)
{
UINT bytesread = 0;
WAVE_FormatTypeDef waveformat;
switch (appState)
{
case APPSTATE_IDLE:
if (usbConnected)
{
appState = APPSTATE_MOUNT_FS;
}
break;
case APPSTATE_GEN_SINE:
waveformat.SampleRate = SINE_GEN_AUDIO_SAMPLE_RATE;
waveformat.FileSize = SINE_GEN_AUDIO_SAMPLE_RATE * SINE_GEN_DURATION * \
sizeof(int16_t) + sizeof(WAVE_FormatTypeDef);
waveformat.NbrChannels = CHANNEL_MONO;
WavePlayerStart(waveformat, getDataSineCB, 70);
break;
case APPSTATE_MOUNT_FS:
if (f_mount(&USBDISKFatFs, (TCHAR const*)USBDISKPath, 0 ) != FR_OK )
{
/* FatFs initialization fails */
Error_Handler();
}
else
{
appState = APPSTATE_WRITE;
}
break;
case APPSTATE_UMOUNT_FS:
f_mount(NULL, (TCHAR const*)"", 1);
appState = APPSTATE_IDLE;
break;
case APPSTATE_WRITE:
if (f_open(&FileWrite, WAVE_NAME_COMPLETO, FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
Error_Handler();
}
else
{
waveformat.SampleRate = SINE_GEN_AUDIO_SAMPLE_RATE;
waveformat.FileSize = SINE_GEN_AUDIO_SAMPLE_RATE * SINE_GEN_DURATION * \
sizeof(int16_t) + sizeof(WAVE_FormatTypeDef);
waveformat.NbrChannels = WAVE_CHANNEL_MONO;
waveformat.ByteRate = SINE_GEN_AUDIO_SAMPLE_RATE * WAVE_CHANNEL_MONO * sizeof(int16_t);
waveformat.BitPerSample = __REV16(WAVE_16_BIT_PER_SAMPLE);
waveformat.SubChunk2Size = SINE_GEN_AUDIO_SAMPLE_RATE * SINE_GEN_DURATION * sizeof(int16_t);
WaveRecord(&FileWrite, waveformat, getDataSineCB);
f_close(&FileWrite);
appState = APPSTATE_PLAY;
}
break;
case APPSTATE_PLAY:
if (f_open(&FileRead, WAVE_NAME_COMPLETO, FA_READ) != FR_OK)
{
Error_Handler();
}
else
{
/* Read sizeof(WaveFormat) from the selected file */
f_read (&FileRead, &waveformat, sizeof(waveformat), &bytesread);
WavePlayerStart(waveformat, getDataCB, 70);
f_close(&FileRead);
}
break;
default:
appState = APPSTATE_IDLE;
break;
}
}