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Pier-Yves Lessard (@pylessard)

Embedded software developer. Experience on tiny ML optimization and power converter control. Author of Scrutiny Debugger

Debug, visualize and test embedded C/C++ through instrumentation

Pier-Yves LessardPier-Yves Lessard March 24, 2026

Instrumenting a firmware is a highly effective methodology for debugging and testing an embedded softwares. In this article, I will present a way of achieving this using Scrutiny, an open-source software suite developed as a personal initiative, designed to streamline debugging, telemetry, and hardware-in-the-loop (HIL) testing for embedded devices.


Hi,Yes, the server abstract the Segger JLink library. That library support 6 protocols: ARM Multi-ICE JTAG, ARM SWD, Segger Rx Fine, Microchip ICSP, Motorolla...
I've been working in my free time to develop an open source  runtime debugger (over the last 4 years). It recently has reached a point of maturity and I thought...
Hi all,I've been working on a software in my free time for the past 2 years. It's a debugging / calibration tool for embedded systems. It's meant to monitor the...

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