Vivado Connecting to Target

[nl7...@gmail.com]

Hello. I'm having trouble connecting to the board in hardware manager of Vivado 2018.2. Nothing shows up to select for connection. Help is appreciated. Thanks.

[Rob Barris]

what physical interface/cabling are you using ?

[Roy Stillwell]

You’ll have to do a few things to get that to work. There is no JTAG over USB (that I’m aware of yet), so you’ll need a few items.
Easiest
1) Get the breaky breaky board. JTAG connectors are broken out, and the Digilent connects easily. You can also manually wire the JTAG piña to the snickerdoodle, but that’s a little more involved.
2) Buy the Digilent JTAG adapter. $60. It’s one of the cheapest.
3) If in Linux, you’ll need to install the cable drivers from the Xilinx Vivado install directory. (It’s a simple process, you’ll have to google it). In Windows, Im guessing you’ll need a driver too.
4) hold down reset button on snick for like 5 seconds as you power it on to boot into jtag mode. (If you want to load things from JTAG, for Xilinx tutorials and such). Or you can just boot Linux from an SD card with the prebuilt image from Krtkl website.
5) Click the hardware manager in Vivado (under build bitstream) , then autoconnect in Vivado and it should come up.

There’s a way to do hardware debugging remotely but it’s a little more involved.
Good luck!
SW

[Freeman Pascal]

Roy,

Which Digilent JTAG adaptor works with the Snickerdoodles? There are six of them listed, which would you recommend?

-Freeman

[Roy Stillwell]

I use the HS3 and it works great.

https://store.digilentinc.com/jtag-hs3-programming-cable/

[nl7...@gmail.com]

I was able to get it working! Thanks for the replies. 

[Rob Barris]

I use the HS3, works like a charm via breakyBreaky.  I did have to trim the shrink-tubing around the connector on the HS3 to get it to seat readily.

https://store.digilentinc.com/jtag-hs3-programming-cable/