JTAG – This is not Rocket Science

Programming interface progress: SWD JTAG command sequences

Since the last post I spent quite some time with my new tool to dump sequences from my commercial debugger. After comparing these dumps to various codebases I found online (libswd, cmsis-dap, mchck) and comparing them to the various manuals on the subject, I managed to extract the command sets Read more…

By Stijn Kuipers, 10 years2015-02-06 ago

Hardware

Reverse engineering SWD JTAG debugging/flashing protocol for Freescale chips

One of the great breakthroughs of the Arduino has been that to get started, you only need the device itself and the software. The try/fail/try again cycle of development got reduced to altering your code and pressing run (again). Most other platforms completely fail in this respect. Many chip-manufacturers have excellent Read more…

By Stijn Kuipers, 10 years2015-02-02 ago