TXD_PIN and RXD_PIN. By doing this data transmitted on TXD_PIN will
be received on RXD_PIN. See the definitions of TXD_PIN and RXD_PIN
in ./main/uart_async_rxtxtasks_main.c.
+
+The output for such configuration will look as follows:
+
+```
+I (3261) TX_TASK: Wrote 11 bytes
+I (4261) RX_TASK: Read 11 bytes: 'Hello world'
+I (4261) RX_TASK: 0x3ffb821c 48 65 6c 6c 6f 20 77 6f 72 6c 64 |Hello world|
+...
+```
+The third line above prints received data in hex format, that comes handy to display non printable data bytes.
\ No newline at end of file