# Hello World

## {{@264#bkmrk-open-iot-and-iiot-ga}}

Link to repositories:

- [C](https://github.com/Redisage/STM32_Open_IoT_and_IIoT_Gateways_examples/tree/main/Hello_world_example)

This example uses UART4 in the MCU which is reserved for the USB UART communication. A simple string is printed on the console and then the device restarts after 10 seconds of countdown. Use 115200 baudrate.

[![image.png](https://doc.redisage.com/uploads/images/gallery/2025-01/scaled-1680-/KCnimage.png)](https://doc.redisage.com/uploads/images/gallery/2025-01/KCnimage.png)