Jtag

what kind of jtag can I use with the DSO nano ?
I’ve found the pin outs in your schematic but I can’t find any commercial jtag that have this pin outs.
Can I use the openOCD jtag ? For example Amontec JTAGkey2 ( tincantools.com/product.php? … 1&featured ) with some type of adapter ?

Thanks a lot.

You’ll need to trim shell and you will see these JTAG pins

JTAG.jpg

DSO0201V1.3A

AGND TRST TDO RST TDI TCK TMS VCC

See the sch you will find the BOOT0 and BOOT1 setting.

I also dont know of any JTAG dongle that would fit the DSO Nano, but since the pinout is already provided, I guess it would be easy to create your own adapter for that. just a couple of wires and connectors from your local DIY Electronics shop.

Or

Maybe Seeedstudio can sell one for cheap… :wink:
They sell probes for the DSO Nano, why not the jtag connectors… of course there will still be some DIY on our part like cut the enclosure to open the pins for the DSO Nano, then solder the provided pinheader. Then simply connect to the JTAG connector then the dongle.

But thats just my opinion…

it would be very nice to have a cheap JTAG tool in SeeedStudio to debug the Arm inside DSO Nano (like http://www.joernonline.de/contrexx2/cms/index.php?page=126) with GNU tools (GCC + GDB + OpenOCD).

Thanks for your suggestions :wink: