Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time

RadioInterface Module: VUHFRadio Add-on Module

This is the firmware for an GUI Interface Add-on module for the VUHFRadio Module. Adds a 2.2" TFT Screen with buttons for control of the VUHFRadio Module.

Some characteristics of this firmware:

  • Custom TFT Screen drivers for the ILI9341 over SPI
  • Custom 2D Library to draw basic shapes and text
  • Custom AX.25 decoding/encode library
  • The MCU used is an STM32F103 and this firmware uses the LL Library
  • Command interface to the VUHFRadio module uses the CAT command interface used in the VUHRadio Module over a private UART interface
  • TNC style interface to the VUHFRadio uses the KISS protocol

Current version is tested and works with:

  • Switching between the two Radio/Transceiver channels, VHF and UHF
  • Loading of configurations on startup from the VUHFRadio Module
  • Update and display RSSI and RF Frequency tracking variables
  • Working menus for changing main analog domain and digital domain configurations and send the changes to the VUHFRadio module
  • Display last CAT command sent and return status
  • Decode and display AX.25 frames received from the VUHFRadio Module over the KISS protocol
  • A Waterfall window with vertical scrolling to show the history of the RSSI and RF Frequency tracking variables

Detailed explanation on the RadioInterface Module and its usage:

File Organization

src/HAL: MCU peripheral drivers, custom HALs

src/Graphics: TFT Screen interface wrapper and custom 2D Library (tft_gui.c)

src/gui.c: GUI Interface

src/Radio/CATInterface.c: CAT Command Handler and interpreter functions

src/Radio/ax25.c AX25 encode and decode library

include/configs.c: Radio configurations save files


GUI Interface Add-on module for the VUHFRadio Module






No releases published


No packages published