# Loading FPGA file to 4 bladeRF devices on a single laptop

**URL:** <https://www.ruby-forum.com/t/loading-fpga-file-to-4-bladerf-devices-on-a-single-laptop/242541>\
**Category:** GNU Radio\
**Created:** [July 1, 2015, 12:16pm UTC](https://www.ruby-forum.com/t/loading-fpga-file-to-4-bladerf-devices-on-a-single-laptop/242541 "2015-07-01T12:16:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![musicdenotation](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/ea666f/32.png) [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\
**Post date:** [July 1, 2015, 12:16pm UTC](https://www.ruby-forum.com/t/loading-fpga-file-to-4-bladerf-devices-on-a-single-laptop/242541/1 "2015-07-01T12:16:38Z")

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Hi all,

I want to use 4 bladeRF devices on a single laptop. This means I have to  
load the FPGA file to all of 4 bladeRF devices.  
However, currently I can only load the PFGA file to 2 devices.  
I am using the command:

bladeRF-cli -l \<path/to/FPGA/file\>

Does anyone know how to load the FPGA file to 4 bladeRF devices on a  
single  
laptop? Please help me with this!  
Thank you in advance.

Best Regards,  
Van-Ly

Van-Ly Nguyen,  
Research Assistant,  
Signals and Systems Laboratory - SSL  
Faculty of Electronics and Telecommunications - FET  
University of Engineering and Technology - UET  
Vietnam National University, Hanoi - VNU

Phone: (+84) 97 881 9406

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**Author:** ![NguySSSn\_VSSn\_LS\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/9fc29f/32.png) [@NguySSSn\_VSSn\_LS\_S](https://www.ruby-forum.com/u/NguySSSn_VSSn_LS_S)\
**Post date:** [July 1, 2015, 12:24pm UTC](https://www.ruby-forum.com/t/loading-fpga-file-to-4-bladerf-devices-on-a-single-laptop/242541/2 "2015-07-01T12:24:14Z")

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I solved my problem by using the argument _bladerf=i_ with _i_ = 0,1,2,3

Thank you all,  
Van-Ly

Van-Ly Nguyen,  
Research Assistant,  
Signals and Systems Laboratory - SSL  
Faculty of Electronics and Telecommunications - FET  
University of Engineering and Technology - UET  
Vietnam National University, Hanoi - VNU

Phone: (+84) 97 881 9406

On Wed, Jul 1, 2015 at 5:14 PM, Nguyễn Văn Lý  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

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<div class="post-metadata">

**Author:** ![NguySSSn\_VSSn\_LS\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/9fc29f/32.png) [@NguySSSn\_VSSn\_LS\_S](https://www.ruby-forum.com/u/NguySSSn_VSSn_LS_S)\
**Post date:** [July 1, 2015, 4:34pm UTC](https://www.ruby-forum.com/t/loading-fpga-file-to-4-bladerf-devices-on-a-single-laptop/242541/3 "2015-07-01T16:34:28Z")

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On Wed, Jul 1, 2015 at 6:22 AM, Nguyễn Văn Lý  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
wrote:

> > I am using the command:
> > 
> > bladeRF-cli -l \<path/to/FPGA/file\>
> > 
> > Does anyone know how to load the FPGA file to 4 bladeRF devices on a  
> > single laptop? Please help me with this!  
> > Thank you in advance.

Hi Van-Ly,

You might want to consider the Nuand forums [1], for bladeRF questions  
that  
don’t directly pertain to GNU Radio.

As far as loading the FPGA, I would recommend you review the bladeRF  
wiki  
[2] with respect to having the  
host software automatically load FPGA when opening a device handle.  
Personally, I prefer this method over  
all others, and prefer to store bitstreams in ~/.config/Nuand/bladeRF/.

The gr-osmosdr wiki page [3] also provides a list of supported device  
arguments. One of these allows you  
to specify an FPGA to load.

Best regards,  
Jon

[1] [Official bladeRF forum - Index page](https://www.nuand.com/forums/)  
[2]  
[FPGA Autoloading · Nuand/bladeRF Wiki · GitHub](https://github.com/Nuand/bladeRF/wiki/FPGA-Autoloading#host-software-based)  
[3] [Making sure you're not a bot!](http://sdr.osmocom.org/trac/wiki/GrOsmoSDR#bladeRFSourceSink)