I would like to transmit from the LimeSDR-USB using gr-limesdr and GNU Radio. I downloaded the new limesuite and gr-limesdr a few hours ago. Attached you will find the flow graph I used and the picture I got. I expected to see the two tones on the spectrum analyzer; I only see the IF frequency.
I ran LimeUtil --update and got the same result with image 18.06/LimeSDR-USB_HW_1.4_r2.17.rbf
What firmware version are you running? do you think my LimeSDR-USB might be broken?
I tried one more thing: Using different revisions of LimeSuite, I transmitted the same data file with limesdr_toolbox.
First I created the file (2e6 sps) with Gnu Radio and a USRP, so this is my expected output:
Second, I reverted LimeSuite to version 17c3e05 which is firmware version 18.04 and I sent the data with limesdr_send application from limesdr_toolbox and I got this:
But, in limesdr_send, LMS_SendStream returned the error “L”. I don’t know what “L” means.
Finally, I updated LimeSuite to version 739bd85 which is firmware version 18.06 and I sent the data with limesdr_send application from limesdr_toolbox and I got this:
NOTE: this is only the IF. The limesdr_send application never terminated. I expected limsdr_send to terminate after about a minute because that’s how long I recorded to create the data file. I have a feeling that the data was never transmitted to the limesdr.
I would suggest to use the latest LimeSuiteGUI (pre-compiled Windows version preferred) and perform a Quick Test procedure. Update the gateware to the latest one using LimeSuiteGUI.
For me the file worked with LimeSDR_USB and LimeSDR_miniFor some freq the TX cal failed until I increased TX gain. (Tx Calibration: MCU error 5 (Loopback signal weak: not connected/insufficient gain?)
I got the same results when I loaded the 18.06 firmware with Modules->Programming (it then downloaded the 18.06 firmware and installed it) with LimeSuiteGUI_20180613_1cb1723.exe
@Zack
I still get the same result with new software, and on a different computer.
So here are the versions of software that I’m using
I’m on a Intel Core i5 running Windows 7 Professional (64 bit)
a) I uninstalled Pothos and GNU Radio and rebooted.
b) The windows driver hasn’t changed in git, so I didn’t re-install that.
c) I programmed the 18.06 firmware yesterday with this version of LimeSutie: LimeSuiteGUI_20180613_1cb1723.exe
I get the same picture as I did on my Ubuntu computer:
EDIT: I removed the USB 2.0 extension cable I was using and now the picture looks correct:
It was not just the cable because plugging the LimeSDR-USB directly into the USB 2.0 port gave me the same picture as the pictures with the USB 2.0 extension cable. All pictures, except the one where I said that I removed the USB 2.0 extension cable, were using the cable; this cable was used for taking the self test pictures in my previous posts.