/**
* @brief Starts audio recording.
* @param pbuf: Main buffer pointer for the recorded data storing
* @param size: size of the recorded buffer in number of elements (typically number of half-words)
* Be careful that it is not the same unit than BSP_AUDIO_OUT_Play function
* @retval AUDIO_OK if correct communication, else wrong communication
*/
uint8_t BSP_AUDIO_IN_Record(uint16_t* pbuf, uint32_t size)
{
uint32_t ret = AUDIO_ERROR;
/* Start the process receive DMA */
HAL_SAI_Receive_DMA(&haudio_in_sai, (uint8_t*)pbuf, size);
/* Return AUDIO_OK when all operations are correctly done */
ret = AUDIO_OK;
return ret;
}
int record_to_flash(void)
{
int ret = 0;
int pos_buff = 0;
uint32_t pos_flash = 0;
uint32_t part_len = DATA_BUFF_LEN / 2;
uint32_t part_bytes = part_len * SAI_DATA_BYTES;
uint32_t total_size = get_audio_part_len();
if (!aos_mutex_is_valid(&sai_mutex)) {
KIDS_A10_PRT("aos_mutex_is_valid return false.\n");
return -1;
}
ret = aos_mutex_lock(&sai_mutex, SAI_WAIT_TIMEOUT);
if (ret != 0) {
KIDS_A10_PRT("SAI is very busy now.\n");
return -1;
}
if (!aos_sem_is_valid(&audio_sem)) {
KIDS_A10_PRT("aos_sem_is_valid return false.\n");
ret = -1;
goto REC_EXIT;
}
ret = reinit_sai_and_dma(SAI_dir_rx_p2m);
if (ret != 0) {
ret = -1;
goto REC_EXIT;
}
printf("Record time is %f seconds!\n", get_run_time());
ret = HAL_SAI_Receive_DMA(&hsai_BlockA1, (uint8_t *)data_buff, DATA_BUFF_LEN);
if (ret != 0) {
KIDS_A10_PRT("HAL_SAI_Receive_DMA return failed.\n");
ret = -1;
goto REC_EXIT;
}
#ifdef FLASH_MONO_DATA
while (1) {
/* Wait a callback event */
while (UpdatePointer == -1) {
ret = aos_sem_wait(&audio_sem, DMA_WAIT_TIMEOUT);
if (ret != 0)
KIDS_A10_PRT("DMA timeout.\n");
}
pos_buff = UpdatePointer;
UpdatePointer = -1;
/* Upate the first or the second part of the buffer */
ready_to_save(&data_buff[pos_buff], part_len);
ret = hal_flash_write(PART_FOR_AUDIO, &pos_flash, &data_buff[pos_buff], part_bytes / 2);
if (ret != 0) {
ret = -1;
break;
}
/* check the end of the file */
if ((pos_flash + part_bytes / 2) > total_size) {
ret = HAL_SAI_DMAStop(&hsai_BlockA1);
if (ret != 0) {
KIDS_A10_PRT("HAL_SAI_DMAStop return failed.\n");
ret = -1;
}
break;
}
if (UpdatePointer != -1) {
/* Buffer update time is too long compare to the data transfer time */
KIDS_A10_PRT("UpdatePointer error.\n");
ret = -1;
break;
}
}
#else
while (1) {
/* Wait a callback event */
while (UpdatePointer == -1) {
aos_sem_wait(&audio_sem, DMA_WAIT_TIMEOUT);
if (ret != 0)
KIDS_A10_PRT("DMA timeout.\n");
}
pos_buff = UpdatePointer;
UpdatePointer = -1;
/* Upate the first or the second part of the buffer */
ret = hal_flash_write(PART_FOR_AUDIO, &pos_flash, &data_buff[pos_buff], part_bytes);
if (ret != 0) {
ret = -1;
break;
}
/* check the end of the file */
if ((pos_flash + part_bytes) > total_size) {
ret = HAL_SAI_DMAStop(&hsai_BlockA1);
if (ret != 0) {
KIDS_A10_PRT("HAL_SAI_DMAStop return failed.\n");
ret = -1;
}
break;
}
if (UpdatePointer != -1) {
/* Buffer update time is too long compare to the data transfer time */
KIDS_A10_PRT("UpdatePointer error.\n");
ret = -1;
break;
}
}
#endif
REC_EXIT:
ret = aos_mutex_unlock(&sai_mutex);
if (ret != 0) {
KIDS_A10_PRT("SAI release failed.\n");
}
return ret;
}
bool Putz01SaiBStart (void) {
puts ("Putz01SaiBStart() Enter\r");
HAL_StatusTypeDef sts = HAL_SAI_Receive_DMA(&hsai_BlockB1, (uint8_t *)&SaiBBuf, sizeof(SaiBBuf)/sizeof(SaiBBuf[0]));
PUTZ_ASSERT(sts==HAL_OK);
return true;
}
