Need sample sender/receiver test code for ESP32-S3 + E32-900T20D (library installed)

Projects Networking, Protocols, and Devices
1

Hi everyone,

I’m using an ESP32-S3 N16R8 with the E32-900T20D LoRa module.
I have already installed the LoRa E32 library, and now I want simple test sketches to check whether the modules are communicating properly.

My wiring:

E32 → ESP32-S3
VCC → 3.3V
GND → GND
M0  → GPIO4
M1  → GPIO5
AUX → GPIO18
TXD → GPIO44 (ESP RX)
RXD → GPIO43 (ESP TX)

What I need:

I am looking for very simple examples using the E32 library:

  1. Sender code → sends a small text string (ex: “Hello”)
  2. Receiver code → prints received packets in Serial Monitor
2

Welcome to the forum

Does the library not come with examples ?
How did you install it ?

3

I moved your topic to a more appropriate forum category @sasindu1.

The Nano Family > Nano ESP32 category you chose is only used for discussions directly related to the Arduino Nano ESP32 board.

In the future, when creating a topic please take the time to pick the forum category that best suits the subject of your question. There is an "About the _____ category" topic at the top of each category that explains its purpose.

Thanks in advance for your cooperation.

4

have a look at the examples under LoRa_E32_Series_Library

GPIO43 and 44 are used by U0TXD and U0RXD
use some other pins to communicate with the E32, e.g. Serial 1 on GPIO17 and 18