# Uhd driver

**URL:** <https://www.ruby-forum.com/t/uhd-driver/233281>\
**Category:** GNU Radio\
**Created:** [November 30, 2014, 6:49pm UTC](https://www.ruby-forum.com/t/uhd-driver/233281 "2014-11-30T18:49:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [November 30, 2014, 6:49pm UTC](https://www.ruby-forum.com/t/uhd-driver/233281/1 "2014-11-30T18:49:43Z")

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I want to check some signal in fpga, so generate the bit stream file,  
and burn it by JTAG, Moinitor some signal in the chipscope  
Then, burning is finished, receiver program (gnuradio) in computer is  
running well, but chipscope signal can be triggered  
I do not why?

Thank you for your help!!

removed\_email\_address@domain.invalid

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**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [November 30, 2014, 9:10pm UTC](https://www.ruby-forum.com/t/uhd-driver/233281/2 "2014-11-30T21:10:28Z")

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Hi hzc,

that’s not nearly enough information for anyone to guess what’s going  
on. What USRP device (there’s around a dozen publicly available USRP  
types)? Which signal? Why are you doing things in the FPGA?  
What are you doing? What is your problem with the chipscope signal?  
Generally: [1]!

Also: Far too often people start working on the FPGA before specifying  
wisely why and what they can’t do on the host and have to do in the  
FPGA. Before asking any questions relating private FPGA modifications,  
please consider if the GNU Radio mailing list is the right one. There’s  
also the USRP-users list[2], but to be completely fair: It’s almost  
impossible to diagnose things that go wrong in a modified FPGA image  
without standing right next to the person.

Best regards,  
Marcus

[1] [http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors](http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors)  
[2] [http://lists.ettus.com/mailman/listinfo/usrp-users\_lists.ettus.com](http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com)