On Board JTAG Debug failed in RiscFree IDE NIOS V Cyclone 10LP

[SeanAB]

Strange issue with JTAG debug connection with RiscFree IDE

Basics:

Board: Intel® Cyclone® 10 LP Evaluation Kit

Quartus 23.1.1

RiscFree™ IDE for Intel FPGAs v23.4.1, 3rd Nov 2023

Host system: Windows 11

The application is a simple NIOS V hello world. I am able to program the .sof file over the boards Altera USB-Blaster II. Debugging the application in RiscFree IDE result in an error "Selected debug probe is not available for debug session"

 

I have the MAX 10 10M08 Evaluation kit, which required an external JTAG to program the board. I used the EthernetBlaster II to program this board with a similar NIOS V hello world program without issue. I switched to use EthernetBlaster II on the Cyclone® 10 LP Evaluation Kit and I was able to debug. The response was a little slow, but it worked.

What is the issue with the on-board USB Blaster II not working?

[JingyangTeh]

Hi

Could you try lowering the usb blaster operating frequency to 16Mhz?

If not then could you try lowering to 8Mhz and 4 Mhz.

If it still could not work, please try using the RiscFree IDE from 23.1 instead of 23.4.

Regards

Jingyang, Teh

[SeanAB]

@JingyangTeh 

Thanks for the suggestion.  I lowered the frequency to 6,  4 , 2 , and 1,  and the results were the same.  If this is a RiscFree IDE version compatibility issue, I am not too worried about it since this is an older board. I have the EthernetBlaster II working, which is fine for my needs.