pyOCD vs RenderDoc

pyOCD is a Python tool and API for debugging, programming, and exploring Arm Cortex microcontrollers. Its GDB server supports command-line debugging and IDE workflows, including Arm CMSIS Debugger, Cortex-Debug, and Eclipse Embedded CDT. It can program firmware and data images into internal or external flash, or load images into RAM. The Python API controls target devices and can support CI setups and custom test or debug tools. More than 70 common Arm Cortex-M devices have built-in support, with CMSIS Device Family Packs available for additional devices. Features include semihosting, SWV, and CMSIS-Pack support. Built-in probe plug-ins include CMSIS-DAP, Raspberry Pi Picoprobe, SEGGER J-Link, STLink, and pyOCD remote; PE Micro Cyclone and Multilink require a separate plug-in. A server and client can share probes over TCP/IP. pyOCD requires Python 3.9 or later and runs on macOS, Linux, FreeBSD, and Windows. It is free, with code licensed under Apache 2.0. Unlocking a supported locked device can require a mass erase, which erases its data.

RenderDoc is a frame-capture graphics debugger for graphics development, released under the MIT license and available free. It supports Vulkan, D3D11, D3D12, OpenGL, and OpenGL ES, with HLSL, GLSL, and SPIR-V listed among supported languages. Its listed platforms are Windows, Linux, and Android; Nintendo Switch support is noted for authorized developers using NintendoSDK. The API support table marks OpenGL 1.0–2.0 compatibility as supported, while D3D9/10 and Metal are unavailable. Linux support is limited to 64-bit x86. Windows users can choose 32-bit or 64-bit builds or a portable ZIP, and the 64-bit build can capture 32-bit programs. Stable and nightly binary releases are available; stable builds are recommended for new users because nightlies may be less stable. Documentation is online for the latest stable version and included as a CHM file in builds, with introductory videos also linked. The project lists GitHub issues, email, IRC, and Discord for questions and problems. RenderDoc is intended for debugging programs users created; its public support channels do not allow discussion of capturing programs they did not create.