![]() And if you’re using a PC or Mac, USB is your only option.įurthermore, the Raspberry Pi Debug Probe exposes SWD signals on a three-pin JST connector that conforms to the Raspberry Pi Debug Connector Specification. While not strictly required if the host computer is a Raspberry Pi (you can wire up the target’s SWD port directly to the GPIO header on a Raspberry Pi), it’s much more convenient to connect via USB. To explain this, Raspberry Pi mentions the following in the announcement: A debug probe provides a bridge between USB and the SWD protocol. The RP2040 chip exposes its DP via a low-pin-count Serial Wire Debug (SWD).ĭue to this, a host computer can talk to the SWD protocol over the same port and control each processor core's AP to debug a running program. ![]() The microcontroller provides a Debug Port (DP), which connects externally to pins on the package and internally to every AP in the system. A flow chart depicting how the Raspberry Pi Debug Probe works. ![]() This can then be used to set breakpoints, and single steps, observe the processor register values, and access memory/peripherals via the processor's bus interface. The technical bits: This debug kit is meant to make use of Arm's CoreSight debug architecture, in which processor cores can be accessed via the Access Port (AP). It has been designed keeping the Raspberry Pi Pico, and other RP2040-based boards in mind.īut, it is not limited to those devices and can be used to debug any Arm-based microcontroller with an SWD port with 3V3 I/O. The Raspberry Pi Debug Probe is a complete debugging hardware solution for Arm-based controllers powered by their in-house chip, the RP2040. With a recent announcement, the Raspberry Pi team has introduced a dedicated debugging kit for Arm-based microcontrollers. ![]() The Raspberry Pi team has been evolving its product lineup ever since the initial release.Ĭouple that together with the many unique Pi project ideas floating around the internet, and you have got a pretty valuable piece of hardware. Raspberry Pi has been the defining single-board computer of recent years and has gained immense popularity due to its accessible and open-source nature. ![]()
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