Best value CMSIS-DAP SWD 3.3V Debug Probe
This is the best value CMSIS-DAP SWD debug probe for 3.3V systems I have been able to find. 100% compatible with OpenOCD. Will be purchasing more for our production and development teams.
Matthew Dyhrberg
Raspberry Pi Ltd
Raspberry Pi Debug Probe
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The Raspberry Pi Debug Probe is a USB-to-debug adapter designed for solderless, plug-and-play debugging and programming of Raspberry Pi Pico and RP2040-based...
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Order now — ships Mon 10 Aug
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The Raspberry Pi Debug Probe is a USB-to-debug adapter designed for solderless, plug-and-play debugging and programming of Raspberry Pi Pico and RP2040-based boards. It provides both a serial wire debug (SWD) interface and a UART interface, each using the Raspberry Pi 3-pin debug connector.
Based on Raspberry Pi Pico hardware running the open-source Picoprobe firmware, it is compatible with the CMSIS-DAP standard and works with OpenOCD on Windows, macOS, and Linux. The firmware is easily updated to the latest version or replaced with custom builds.
Key Features
- USB to SWD Bridge – Arm Serial Wire Debug supported by default (other interfaces possible)
- USB to UART Bridge – Serial console access via the same probe
- CMSIS-DAP Compatible – Works with OpenOCD and other standard debug tools
- Raspberry Pi 3-Pin Debug Connector – Follows the official specification
- Open-Source Firmware – Based on Picoprobe, easily upgradeable
- Cross-Platform – Windows, macOS, and Linux support
Specifications
- Dimensions – 22 × 32 mm
- I/O Voltage – 3.3 V
- Operating Temperature – −20 °C to +70 °C
Package Contents
- 1× Raspberry Pi Debug Probe (in plastic case)
- 1× USB cable
- 1× 3-pin JST to 3-pin JST cable
- 1× 3-pin JST to 0.1" (2.54 mm) female header cable
- 1× 3-pin JST to 0.1" (2.54 mm) male header cable
Jargon buster
Plain-language definitions for the technical terms used above.
- RP2040
- The RP2040 is a dual-core Arm Cortex-M0+ microcontroller chip from Raspberry Pi, used on many maker boards and offering programmable I/O, multiple GPIO pins and reasonable processing speed. Code and accessories built for that chip should work where RP2040 compatibility is listed, though demanding tasks such as reading a camera can require careful pin allocation and timing.
- SWD
- Serial Wire Debug (SWD) is a two-wire programming and debugging interface used with many ARM Cortex-M microcontrollers. It provides low-level access to program, recover or debug the microcontroller.
- UART
- UART is a simple asynchronous serial interface that sends data over separate transmit and receive wires, usually labelled TX and RX, with both ends set to the same baud rate. It is a common way for microcontrollers and other serial devices to exchange data.
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