NI USRP 2940 R safe mode button

Hi all

I have a NI USRP 2940 R, which is unreachble via ethernet (1 Gb) after a firmware change.

To change the firmware, I used the following command:

uhd_image_loader - args = "type = x 300, addr = 192.168.10.2"--fpga-path="/usr/share/uhd/images/usrp_x310_fpga_XG.lvbitx"

The procedure seems to be successful:

-Initialization FPGA... successful loading.
-Image of HG FPGA loading: 100% (areas of 121/121)
-Finalize loading image... successfully.
Turn on the USRP X 310 to use the new image.

But after the power cycle, I can not able to ping of the USRP and also orders uhd_find_devices and uhd_usrp_probe say 'No UHD Devices Found'. So I thought I would put my NI USRP 2940 R in safe mode.

In the "GETTING a STARTED GUIDE NI USRP-2940R/2942R/2943R universal software Radio peripheral" (http://www.ni.com/pdf/manuals/375717f.pdf) in the section "why isn't the default Reset IP address?", I found the procedure that says to locate the pushbutton switch (S2).

The problem is that unlike OR USRP 2920 wherein the S2 button is easy to reach, I could not find button SafeMode in NI USRP 2940 a. I have found that the buttons SW1 and SW3.

Anyone has idea about what are the keys SW1 and SW3? Or better, how to reset the USRP NI 2940 R?

Thank you very much for your attention.

Best regards.

Francesco.

Image usrp_x310_fpga_XG.lvbitx implements only 10GbE SFP ports, so you will not be able to communicate with the device via 1GbE, although it is charged.  You need probably the image of usrp_x310_fpga_HG.lvbitx which has a single port to 1 GB and the other to 10 GB and is the image that the devices are provided with.  See https://files.ettus.com/manual/page_usrp_x3x0.html#x3x0_load_fpga_imgs_fpga_flavours for more information on the different FPGA images available.

There is no safe mode on the USRP AND 2940R, but there are different ways to load a new FPGA image that will work without a functional image already on the device. The PCIe connection on the device may load images temporarily in the device and update the image in flash even if there is no image already on it.  USB JTAG connection on the front panel can also be used to temporarily to load a new image so that you can access the device via Ethernet to update the persistent image.  Also, you should be able to use the unit normally if you have a connection with the 10GbE. The above linked page includes directions for all of these methods of loading images.

Tags: NI Products

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