if (opts[APP_OPTIONS_RX_FIFO_SIZE])
props->rx_fifo_size = opts[APP_OPTIONS_RX_FIFO_SIZE];
if (opts[APP_OPTIONS_TX_FIFO_SIZE])
if (opts[APP_OPTIONS_RX_FIFO_SIZE])
props->rx_fifo_size = opts[APP_OPTIONS_RX_FIFO_SIZE];
if (opts[APP_OPTIONS_TX_FIFO_SIZE])