Given an unknown PCBA with an ARM processor, odds are good that it will have either the standard 10 pin 0.05″ or 20 pin 0.1″ debug connector. This uncommon commonality is a boon for an exploring ...
However, if one is using a PC or Mac, it is very unlikely that one will have access to a built-in serial port. The Raspberry Pi Debug Probe works like a USB serial adapter, via the same USB port as ...