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3LionsCT's avatar
3LionsCT
Icon for Occasional Contributor rankOccasional Contributor
1 month ago

Change the default USB Blaster II Hardware Frequency?

Hi, My USB blaster will not work at the default hardware frequency of 24MHz but works fine at 16MHz.  I have to change it every time in the programmer or when using Signal tap. Is there a parameter ...
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FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
1 month ago

Hi,
.
apparently there's no feature to store a frequency setting permanently. Interestingly Arrow-USB-Blaster stores the default in Registry. Actual frequency can be modified with jtagconfig --setparam, but it's reset to default when cable is plugged in oder Jtagserver restarted. You also need to know the cable number if you have more than one cable attached.

"jtagconfig --setparam 1 JtagClock 16M" could be e.g. called in post compilation flow as a workaround.

Regards
Frank

3LionsCT's avatar
3LionsCT
Icon for Occasional Contributor rankOccasional Contributor
1 month ago

Hi Frank,

That's what I figured. I saw the command line instruction but at that point its just easier to change it in the programming GUI

Sees like a feature that would be good to add to Quartus in the future!

Regards

 

  • Farabi's avatar
    Farabi
    Icon for Regular Contributor rankRegular Contributor
    1 month ago

    I will file CR (feature request) to engineering for future improvement. 

     

    regards,

    Farabi