46 lines
1.2 KiB
Markdown
46 lines
1.2 KiB
Markdown
# UART Events Example
|
|
|
|
(See the README.md file in the upper level 'examples' directory for more information about examples.)
|
|
|
|
This example shows how to use the UART driver to handle special UART events. It also reads data from `UART0` directly,
|
|
and echoes it back to the monitoring console.
|
|
|
|
## How to use example
|
|
|
|
### Hardware Required
|
|
|
|
The example can be used with any ESP32 development board connected to a computer with a USB cable.
|
|
|
|
### Configure the project
|
|
|
|
```
|
|
idf.py menuconfig
|
|
```
|
|
|
|
### Build and Flash
|
|
|
|
Build the project and flash it to the board, then run monitor tool to view serial output:
|
|
|
|
```
|
|
idf.py -p PORT flash monitor
|
|
```
|
|
|
|
(To exit the serial monitor, type ``Ctrl-]``.)
|
|
|
|
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
|
|
|
|
## Example Output
|
|
|
|
Pushing `a` followed by a `b` on the keyboard will generate the following output:
|
|
```
|
|
...
|
|
I (0) cpu_start: Starting scheduler on APP CPU.
|
|
I (299) uart: queue free spaces: 20
|
|
I (2249) uart_events: uart[0] event:
|
|
I (2249) uart_events: [UART DATA]: 1
|
|
I (2249) uart_events: [DATA EVT]:
|
|
aI (12089) uart_events: uart[0] event:
|
|
I (12089) uart_events: [UART DATA]: 1
|
|
I (12089) uart_events: [DATA EVT]:
|
|
b
|
|
```
|