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A complete debug hardware solution for Arm-based microcontrollers, powered by RP2040. Featuring a USB to two-wire serial debug bridge and a USB to UART bridge, the Debug Probe makes it easy to use devices such as Raspberry Pi Pico with a range of host platforms including PC, Mac, and typical Linux computers.
All modern Arm-based microcontrollers, including RP2040, implement Arm’s CoreSight debug architecture. Each processor core, like the Cortex-M0+ used in RP2040, provides an Access Port (AP) which can be used to single step, set breakpoints, observe the values of processor registers, and access memory and peripherals via the processor’s bus interface.
Specifications
- Form factor: 22mm × 32mm
- USB to two-wire serial debug bridge (Arm Serial Wire Debug supported by default)
- USB to UART bridge
- Compatible with the CMSIS-DAP standard
- Works with OpenOCD and other tools supporting CMSIS-DAP
- Follows the Raspberry Pi 3-pin Debug Connector Specification
- Includes a high-quality transparent plastic case
- Includes a USB cable and three debug cables: 3-pin JST connector to 3-pin JST connector cable; 3-pin JST connector to 0.1-inch header (female); 3-pin JST connector to 0.1-inch header (male)
- Nominal I/O voltage: 3.3V
The Raspberry Pi Debug Probe is an all-in-one USB-to-debug kit that provides all the necessary hardware and cables for easy, solderless, plug-and-play debugging.
It features both a processor serial debug interface (by default the Arm Serial Wire Debug interface, but other interfaces can be supported) and an industry-standard UART interface. Both interfaces use the Raspberry Pi 3-pin debug connector, as detailed in the Raspberry Pi 3-pin Debug Connector Specification.
The Raspberry Pi Debug Probe is a kit comprising the Debug Probe hardware in its own plastic case together with a USB cable and three types of debug cable, covering the vast majority of debug use cases. It is designed to make it easy to debug and program Raspberry Pi Pico and RP2040 with a range of host platforms including Windows, Mac, and typical Linux computers, where you don’t have a GPIO header to connect directly to the Pico’s serial UART or SWD port.
While designed for use with Raspberry Pi products, the Debug Probe provides standard UART and CMSIS-DAP interfaces over USB, so it can also be used to debug any Arm-based microcontroller that provides an SWD port with 3V3 I/O, or even just as a USB-to-UART cable. It works with OpenOCD and other tools that support CMSIS-DAP.
The Debug Probe is based on Raspberry Pi Pico hardware and runs the open source Raspberry Pi Picoprobe software. The firmware is updated in the same way as Raspberry Pi Pico firmware, so it is easy to keep the unit up to date with the latest firmware, or to use custom firmware.
