Testing Raspberry Pi's New Debug Probe
It&#x27;d be great if debug probes had some common specs we could compare one another against. Why is this only 3 pin JST but most SWD ports have more pins? Will we be able to debug most SWD devices? Are there speed differences that we should know about&#x2F;does JTAG and SWD all run at a standard speed, or can it vary? What does a $500 Segger J-Link have that a Black Magic Probe or Pi Debug Probe doesn&#x27;t? Will the Pi Debug Probe perhaps be able to do flash-programming? How many pins does that tend to require?<p>I feel like we should expect JTAG support (for ARM7&#x2F;9&#x2F;11 and I think some other misc devices, but I could well be making up that last part) for the Pi Debug Probe eventually? Maybe there&#x27;s some hardware complexity of the bus that makes this hard, but since this is just a Pico, it feels like it should likely be flexible enough. (By contrast the SWD port it does have is for thew newer ARM Cortex chips.)