bladeRF x40 appears dead

Having issues with the site, hardware, source code, or any other issues?

Moderator: robert.ghilduta

kazam
Posts: 4
Joined: Fri Aug 10, 2018 4:24 am

bladeRF x40 appears dead

Post by kazam » Fri Aug 10, 2018 4:26 am

Hi,

I'm on Ubuntu 18.04 and have several bladeRF devices. They always at least show up in dmesg. Now I get absolutely nothing.

Power LED is on at least. But that's all. Ideas?

bglod
Posts: 180
Joined: Thu Jun 18, 2015 6:10 pm

Re: bladeRF x40 appears dead

Post by bglod » Tue Aug 14, 2018 6:03 pm

And this is a sudden problem with all of your bladeRFs? This sounds very strange. Can you try another machine, or perhaps use the GNU Radio Live image? Do the devices show up in lsusb? Can bladeRF-cli -p detect them?

Take a look at the schematic and probe all the voltage rails when it's plugged in. Please report any anomalous readings.
Electrical Engineer
Nuand, LLC.

kazam
Posts: 4
Joined: Fri Aug 10, 2018 4:24 am

Re: bladeRF x40 appears dead

Post by kazam » Mon Aug 27, 2018 12:36 am

HI,

No it't just the one unit and it was ordered a few weeks back. It ran for a day or two and then stopped working.

lsusb doesn't pick it up. probe doesn't show it.

I'll check the rails!

bglod
Posts: 180
Joined: Thu Jun 18, 2015 6:10 pm

Re: bladeRF x40 appears dead

Post by bglod » Mon Aug 27, 2018 8:50 am

Okay, it's just the one -- that sounds better! Please do the probe and let us know what you find. We may have to take this to e-mail so we can get your order number and look into RMA options. We test these units at the factory and once again before shipping out, but infant/DOA failures sometimes can and do happen.
Electrical Engineer
Nuand, LLC.

kazam
Posts: 4
Joined: Fri Aug 10, 2018 4:24 am

Re: bladeRF x40 appears dead

Post by kazam » Tue Aug 28, 2018 5:15 am

Rails seems to be fine. I'll have someone send an email for RMA.

Thanks!

bglod
Posts: 180
Joined: Thu Jun 18, 2015 6:10 pm

Re: bladeRF x40 appears dead

Post by bglod » Tue Aug 28, 2018 7:50 am

In that case, I wonder if there's something wrong with the clock or clock buffer -- you say nothing new shows up in dmesg. One last thing you can try, is to force the FX3 into bootloader mode by shorting pins 1 and 2 of J64.

If the device shows up in dmesg or lsusb as

Code: Select all

04b4:00f3 Cypress Semiconductor Corp.
Then your FX3 image may have been corrupted somehow. Proceed with flashing a new FX3 image (v2.2.0 is the latest on our website at this time) using the FX3 bootloader recovery instructions.

If it does not show up as a Cypress device with J64.1-2 shorted, then yeah there's probably something wrong with the hardware. Send us an e-mail and we'll get it cleared up!
Electrical Engineer
Nuand, LLC.

floor51
Posts: 5
Joined: Mon Sep 10, 2018 2:13 am

Re: bladeRF x40 appears dead

Post by floor51 » Mon Sep 10, 2018 2:21 am

I also have this problem.

I have 2 bladeRF 1s and both were working, but now one is behaving in the way described in this thread, ie. LED is on but no USB connectivity.

I've tried forcing into bootloader mode as described. I've also tried the physical reset button.

I've been looking at JTAG cables but then I guess this won't help if the bootloader mode is the failsafe anyway?

I think I must have shorted something on the board. Is this something you can look at for me?

bglod
Posts: 180
Joined: Thu Jun 18, 2015 6:10 pm

Re: bladeRF x40 appears dead

Post by bglod » Mon Sep 10, 2018 7:41 am

Nothing shows up in dmesg? Did you probe all the voltage rails to make sure they are within their nominal range? When in bootloader mode, does a Cypress device show up at all in lsusb?

Please send us an e-mail if you're still having trouble.
Electrical Engineer
Nuand, LLC.

floor51
Posts: 5
Joined: Mon Sep 10, 2018 2:13 am

Re: bladeRF x40 appears dead

Post by floor51 » Tue Sep 18, 2018 9:18 am

No nothing in dmesg. I've tried the jumper. Just the one green LED comes on and no USB.

It did work initially for a few days, so I thought it must be similar to the user that started this thread.

Can you describe precisely how to check the rails on the bladeRF? I've had a quick look at this page: https://hackaday.io/project/29189-how-to-bring-up-a-pcb

bglod
Posts: 180
Joined: Thu Jun 18, 2015 6:10 pm

Re: bladeRF x40 appears dead

Post by bglod » Tue Sep 18, 2018 12:18 pm

I just added this section in our Troubleshooting Page on our Wiki. Let me know if anything is unclear.
Electrical Engineer
Nuand, LLC.

Post Reply