Error: Failed to claim FPGA device: mismatch between target's idcode and fs idcode

[neuberfran]

Hi,

I stay trying this: https://trabucayre.github.io/openFPGALoader/vendors/gowin.html with my tangnano 1k by sipeed with issue:

Error: Failed to claim FPGA device: mismatch between target's idcode and fs idcode

Everything looks OK and the installation of openFPGALoader looks OK.

Can anyone help

[trabucayre]

Your install seems ok. This error is displayed when you create a gateware for an FPGA and you try to load it into another, different, FPGAs. For example you have a project for GW1N-2 and your target is GW1N-1.
Each model has a specific idcode (a unique number by model) and this information is available into the bitstream.
Could you use -v option to have more verbose ouput and recheck physical device?
Keep in mind there is two tangNano1K:

• original one with a GW1N-1 and with a ch552 as jtag interface
• new one with a GW1NZ-1 and with a bl702.

So if you use an existing project for the original: risks are great to have a gateware configured to the wrong FPGA.

[neuberfran]

@trabucayre Tks
https://gist.github.com/neuberfran/2645508bd4ac11f8c254d8cdf480281e
[]s
What about 100mA issue too
sipeed/Tang-Nano-examples#5

[trabucayre]

This issue is tangNano first generation related. If you have bought recently your board I think you have an bl702 interface.
According to your screenshot you use Tang-Nano-examples

But if you have new one you have to use
TangNano-1K-examples

[neuberfran]

@trabucayre Solved. Nothing change in my board because already comes with this program installed(I think)

Yes. I have new one

[trabucayre]

Great!
Most important thing is: openFPGALoader has passed idcode check. But I'm agree message is a bit cryptic and it's requires to be reviewed with more relevants informations!
Thanks!
Can I close this issue?