mirror of
https://github.com/espressif/esp-idf
synced 2025-03-10 01:29:21 -04:00
1c92945f59
Currently, several example dependencies rely on the fact that all registered components are added to the build, along with components specified in common requirements. This results in longer build times because even unused components must be built. Switch all examples to use idf_minimal_build to compile only the components actually required by the example. Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
|---|
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 run on any development board, that is based on the Espressif SoC. The board shall be connected to a computer with a single USB cable for flashing and monitoring.
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