Firmware needs constant reflashing

Projects LimeSDR
1

Hi, I have a limesdr, and can use the limeutils, gnuradio etc.
My problem is that after a few minutes use, the device stops working and then everything reports:

  Gateware version mismatch!
  Expected gateware version 2, revision 12
  But found version 0, revision 0

reflashing the firmware with limeutils fixes it temporarily·
Any ideas what I can do to stop this from happening?

Thanks,
Mat

2

Hi Matt,

When this happens it’s usually due to power supply brown-out. Would recommend trying a different USB cable (usually the problem) or port.

3

thanks Andrew. I’ll make up a power cable for the dc jack and let you know if it solves it.
Matt

4

Andrew, thanks this has definitely helped. I used a wall wart powersupply and haven’t experienced another firmware crash since then.

5

Glad to hear it’s resolved.

6

Hi,
sorry to report back that even with the external PSU we are still having lots of problems.
Flashing firmware went down to just a couple of times in a session, but has recently got a lot worse.

Just now we are getting this error from gnuradio (previously working)

e[1me[31m[ERROR] e[0m
e[1me[33m[WARNING] SoapyLMS7::setSampleRate(): not a power of two factor: TSP Rate = 15.36 MHZ, Requested rate = 10 MHze[0m
e[1me[31m[ERROR] e[0m
e[1me[31m[ERROR] e[0m
e[1me[31m[ERROR] setBandwidth(Rx, 0, 30 MHz) Failed - e[0m

Then when we try to run it again:

e[1me[33m[WARNING] Gateware version mismatch!
  Expected gateware version 2, revision 12
  But found version 0, revision 0
  Follow the FW and FPGA upgrade instructions:
  http://wiki.myriadrf.org/Lime_Suite#Flashing_images
  Or run update on the command line: LimeUtil --update

Then we can flash it again but the same problem persists. It seems to have got worse ;(

7

Just in case it’s useful, I’m running off a lab PSU now, set to 10v and I can see it’s drawing 400mA.

8

Sorry to hear that.

Do you have anything else to suggest, @Zack?

9

What is limit of the current on your lab PSU?