2017-10-01 11:02:06 +00:00
|
|
|
UART asynchronous example, that uses separate RX and TX tasks
|
|
|
|
|
=============================================================
|
|
|
|
|
|
|
|
|
|
Starts two FreeRTOS tasks:
|
|
|
|
|
- One task for transmitting 'Hello world' via the UART.
|
|
|
|
|
- One task for receiving from the UART.
|
|
|
|
|
|
|
|
|
|
If you'd like to see your ESP32 receive something, simply short
|
|
|
|
|
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.
|
2017-10-19 19:45:58 +00:00
|
|
|
|
|
|
|
|
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.
|
