#  PyAvrOCD

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<p align="center">
  <a href="https://felias-fogg.github.io/PyAvrOCD/index.html"><img src="https://raw.githubusercontent.com/felias-fogg/PyAvrOCD/refs/heads/main/docs/pics/logo-small.png" width="15%"></a>
</p>




PyAvrOCD is a GDB server for 8-bit AVR MCUs (see [list of supported MCUs](https://felias-fogg.github.io/PyAvrOCD/supported-mcus/) and [supported boards](https://felias-fogg.github.io/PyAvrOCD/supported-boards/)). It can communicate with Microchip's debug probes such as MPLAB Snap and with the DIY debugger dw-link (see [list of supported debug probes](https://felias-fogg.github.io/PyAvrOCD/supported-debuggers/)).

So, why another open-source GDB server for AVR MCUs? The main intention is to provide a *cross-platform* AVR GDB server. In other words, it is ***the missing AVR debugging solution*** for [PlatformIO](https://platformio.org) and the [Arduino IDE 2](https://www.arduino.cc/en/software/). And it excels in [minimizing flash wear](https://arduino-craft-corner.de/index.php/2025/05/05/stop-and-go/) and [protects single-stepping against interrupts](https://arduino-craft-corner.de/index.php/2025/03/19/interrupted-and-very-long-single-steps/).

<p align="center">
<img src="https://raw.githubusercontent.com/felias-fogg/pyavrocd/refs/heads/main/docs/pics/ide2-6.png" width="70%">
</p>


When you want to install PyAvrOCD, you can [install it as part of an Arduino core](https://felias-fogg.github.io/PyAvrOCD/install-link/#arduino-ide-2), so that it can be used in the Arduino IDE 2, you can [download binaries](https://felias-fogg.github.io/PyAvrOCD/install-link/#downloading-binaries), you can install PyAvrOCD using [PyPI](https://felias-fogg.github.io/PyAvrOCD/install-link/#pypi), or you can, of course, [clone or download the GitHub repo](https://felias-fogg.github.io/PyAvrOCD/install-link/#github).

[Read the docs](https://felias-fogg.github.io/PyAvrOCD/index.html) for more information.


## What has been done so far, and what to expect in the future

When moving from the earlier version of the GDBserver, called [dw-gdbserver](https://github.com/felias-fogg/dw-gdbserver), to PyAvrOCD, support for JTAG Mega chips has been added. This was more work than anticipated. And the current release is not yet fit for serious work. A number of JTAG MCUs still need to be tested, and more unit and integration tests are called for.  If you would nevertheless like to give PyAvrOCD a try, you are welcome. The integration into Arduino IDE 2 is already done (for ATtiny chips and the Arduino AVR Boards). Any feedback, be it bug reports, crazy ideas, or praise, is welcome.

UPDI MCUs will follow next. I am unsure about Xmegas.



A cross-platform GDB server for AVR MCUs. 

pyavrocd

arduino-craft-corner

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Bidirectional unicode control characters

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Bin script confusion

This Chrome extension includes content scripts that execute JavaScript on specified websites.

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Chrome: Content Script

This Chrome extension requests host permissions to access specific websites or domains.

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Chrome: Host Permission

This Chrome extension requests permissions to access browser APIs, user data, or system features.

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Chrome: Permission

This Chrome extension requests wildcard host permissions that grant broad access to websites.

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Chrome: Wildcard Host Permission

Semantic versions published out of chronological order.

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Chronological version anomaly

Project maintainer's SSH key has been compromised.

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Compromised SSH key

(Experimental) Copyleft license information was found.

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Contains a Critical Common Vulnerability and Exposure (CVE).

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Title

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High CVE

Uses debug, reflection and dynamic code execution features.

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Debug access

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File dependency

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An input argument to this GitHub Action is being exported as an environment variable. If a user of this action passes untrusted input, it could be used in an insecure manner by subsequent workflow steps.

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Install scripts

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Invisible chars

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pyavrocd

PyAvrOCD

What has been done so far, and what to expect in the future

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