The Raspberry Pi Debug Probe is a USB device that provides both a UART serial port and a standard Arm Serial Wire Debug (SWD) interface. The probe is designed for easy, solderless, plug-and-play debugging.

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. It has the following features:

• USB to ARM Serial Wire Debug (SWD) port
• USB to UART bridge
• Compatible with the CMSIS-DAP standard
• Works with OpenOCD and other tools supporting CMSIS-DAP
• Open source, easily upgradeable firmware
• The probe operates at 3.3V nominal I/O voltage.

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