# Using UART on RV1103

Canonical URL: https://abedini.me/en/blog/view/?id=luckfox-pico-rv1103-uart4
Language: en
Type: Blog post
Published: 2026-06-26
Topics: debug, serial, uart, linux-serial, embedded-linux, RV1103

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## Summary
A practical UART setup note for debugging and communication with external modules such as GSM boards.

## Body
UART on RV1103

UART is useful both for debugging and for communicating with external modules such as GSM boards, sensors, or small companion controllers.

   Setup

This note covers the initial serial configuration path, the role of UART in embedded Linux projects, and the checks needed before using it in a larger system.

   Outcome

The board gets a basic serial communication path that can be used for diagnostics or module integration.