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Prakash Das
Prakash Das

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Introducing ComScope: A Fast & Lightweight Serial Terminal for Embedded Linux Developers

#iot #linux #showdev #tooling

If you've ever worked on embedded systems, IoT devices, or microcontrollers like Arduino and ESP32 on Linux, you know that a reliable serial terminal is an absolute must-have. While stalwarts like minicom, screen, and picocom have served us well for years, setting them up and navigating their interfaces can sometimes interrupt the developer flow.

That's why I created ComScope—a fast, lightweight, and incredibly intuitive serial port terminal built specifically for embedded development boards on Linux.

What is ComScope?

ComScope is an open-source, ncurses-based terminal emulator written entirely in C. It was designed to get you connected to your serial devices as quickly as possible without wrestling with cryptic command-line flags.

It provides an ultra-low latency connection (30-50ms response time) and an interactive menu that automatically detects your plugged-in serial ports (like /dev/ttyUSB0 or /dev/ttyACM0).

Key Features

  • Auto-Port Detection: Say goodbye to manually hunting down your tty device paths. ComScope finds available serial ports and lets you select them with your arrow keys.
  • Lightning Fast: Built in C with minimal overhead for highly responsive interactions.
  • Built-in Session Logging: Press Ctrl+A and hit l to instantly start logging your serial output to a timestamped text file.
  • Keyboard-driven UI: A clean interface that is entirely navigable via standard shortcuts without garbling your terminal colors.
  • Easy Installation: Available right from the Snap Store for all major Linux distributions!

Getting Started

You can install ComScope in seconds if you are using a Snap-enabled Linux distro. Note: You'll need the --devmode flag so the app can access your host's physical serial ports.

sudo snap install comscope --devmode
comscope
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If you prefer building from source, it's just as simple:

git clone https://github.com/prkshdas/ComScope.git
cd ComScope
make
./ComScope
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We Need Your Contributions!

ComScope was just released, and while it covers the basics perfectly, there's a lot of room to grow. I'm actively looking for contributors, maintainers, and beta testers from the embedded community to help take this tool to the next level.

The Roadmap

Here are a few exciting features currently on our to-do list:

  • Configurable Serial Parameters: Currently locked to 8N1 (which works for 99% of devices), but we want to add UI for changing data bits, parity, and stop bits.
  • Hex/ASCII View Modes: Extremely useful for debugging raw binary sensor data.
  • Multiple Session Tabs: Connect to an ESP32 and an Arduino simultaneously.
  • Macro & Script Support: Automate sending repetitive commands to your boards.
  • Auto-Baud Rate Detection.

How to Contribute

Whether you're a seasoned C developer, a Linux packager, or just someone who wants to fix a typo in the README, your help is welcome!

  1. Star and Fork the Repo: Head over to prkshdas/ComScope on GitHub.
  2. Pick an Issue: Check out the issues tab, or open a new one with a feature request.
  3. Submit a PR: We review all pull requests and love seeing new ideas.
  4. Test it out: Download it from the Snap Store, test it with your hardware, and let us know your feedback!

Let's build the ultimate modern serial terminal for the Linux embedded community together. Happy tinkering! 🐧⚡

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