UART Transmitter and Receptor

This example shows how to:

• Use UART asynchronous transmition to send a random number every 5 seconds.
• Use UART asynchronous reception to read the buffer every 3 seconds.

Note: This examples might not obtain an actual random number, you can read more about in the docs.

Note: This is mainly based on ESP-IDF UART Asynchronous Example.

How to use example

Configure the project

You can change the values from TXD_PIN, RXD_PIN, and TX_UART in main.c to the indicate the pins to use and the UART to use.

Hardware Required

You need a 2 ESP32 basic Devboard, this was tested with 2 NodeMCU.

Pin Assignment:

You must connect ESP32-Transmitter's Tx to ESP32-Receptor's Rx.

ESP32-Transmitter	ESP32-Receptor	DESCRIPTION
GPIO4	GPIO4	UART TX
GPIO5	GPIO5	UART RX

Log

• Last compile: October 31t 2023.
• Last test: October 31t 2023.
• Last compile espidf version: v 5.1.1.
• VSCode ESP-IDF Visual Studio Code Extension v 1.6.5.

License

Apache License, Version 2.0, January 2004.

Version

v 1.0.0