STM32L476 BSP_SD_WriteBlocks_DMA

uint8_t BSP_SD_WriteBlocks_DMA(uint32_t *pData, uint32_t WriteAddr,
    uint32_t NumOfBlocks)
{

    uint32_t tickstart = HAL_GetTick();

  /* Write block(s) in DMA transfer mode */
  if (HAL_SD_WriteBlocks_DMA(&_HSD, (uint8_t *) pData, WriteAddr, NumOfBlocks)
      != HAL_OK)
  {
    return MSD_ERROR;
  }

  // Polling DMA and SMDDC for end of transfer
    while((HAL_DMA_GetState(&hdma_sdmmc1_tx)!=HAL_DMA_STATE_READY)) {

      if((HAL_GetTick() - tickstart) >=  SD_WAIT_TIMEOUT)
          {
            return HAL_TIMEOUT;
          }

    }

    tickstart = HAL_GetTick();

    while((HAL_SD_GetState(&_HSD) != HAL_SD_STATE_READY)) {

          if((HAL_GetTick() - tickstart) >=  SD_WAIT_TIMEOUT)
              {
                return HAL_TIMEOUT;
              }

      }

  return MSD_OK;
}