Flashing bootloader on nRF52840 with BP6

[ian]

Here’s a post on the development thread showing it in action, docs still in progress.

Using the Bus Pirate:

• Connect IO0 and IO1 to the suspected SWDIO pins
• Connect GND to the ground pin of the device
• In the Bus Pirate terminal enter JTAG mode m jtag
• Enable a (3.3v?) power supply W 3.3
• Type bluetag
• Hit s t o scan for SWD pins
• Enter the number of probes 2
• It will search all possible combination of pins for a SWDIO port

@petaflot

5 is still the baseline.

I would have appreciated if this had been made a little more obvious in the process of ordering ; I feel like I’m stuck with more junk (albeit pretty when powered on) that will never be used

I’m really sorry to hear you feel that way. To be clear though, JTAG debugging is not a supported or advertised feature for any current Bus Pirate version.

There are experimental ports of a few 3rd party firmwares that can do JTAG on the Bus Pirate hardware, which is going to become part of larger library of alternate firmware for the Bus Pirate. This is still a work in progress, and will support all hardware versions when it is officially released.

If there is anything in the documentation or sales pages that suggests JTAG debugging is currently supported please let me know. I don’t want to cause any confusion.