CODEC loopback test failed on E200

[devttys]

Hi, I've built UHD host drivers from the latest master (after fixing some compilation errors) and using the latest firmware from v1.0 release.

Unfortunately, I can't get the device to work properly as it constantly fails the loopback test. What can be the cause? Is this a hardware issue?

uhd_usrp_probe 
[INFO] [UHD] linux; GNU C++ version 13.2.0; Boost_107400; UHD_4.1.0.0-0-9abe8bc8
[INFO] [ANT] Detected Device: ANTSDR
[INFO] [ANT] Initialize CODEC control...
[INFO] [ANT] Initialize Radio control...
[INFO] [ANT] Performing register loopback test... 
[INFO] [ANT] Register loopback test passed
[INFO] [ANT] Performing register loopback test... 
[INFO] [ANT] Register loopback test passed
[ERROR] [AD936X] CODEC loopback test failed! Expected: 0xAA50D3A0 Received (TX/RX): 0xAA50D3A0/0x0050FE30
Error: RuntimeError: CODEC loopback test failed.

I've also tried the older v0.1 firmware build, but the driver refuses to connect due to incompatible firmware:

Error: RuntimeError: Expected FPGA compatibility number 16, but got 7:

I would appreciate if someone could point me to the working combination of firmware + driver revisions. I also tried to build the firmware from master but it fails to build due to missing files (I'll create a separate issue for that)

[lone-boy]

If you use the v0.1 version, the corresponding firmware also needs to use v0.1.
Can you tell me the network port connection method you use? Is there a USB network port adapter?

[devttys]

Yes, I'm using USB 3.0 Ethernet adapter on my laptop connected directly to E200, the speed is set to 1000 Mb/s.

When using the IIO firmware or MaiaSDR with the same adapter it seems to be working fine, or at least I haven't noticed any issues.

[cychoi75]

I'm having the same problem. I'm also having the problem on dragon os, even with uhd driver installed on ubuntu 22.04.

[cychoi75]

I solved the above problem simply. The problem was a usb ethernet device connected to the laptop, and when I connected it directly to the intel nuc with dragon os, it worked fine. In the future, I will try to test again with USB Ethernet device using Realtek chip.

[cychoi75]

I tested it using USB Ethernet with a Realtek chip and found it works fine

[Szum123321]

Can confirm, some USB dongles lead to CODEC error. RTL8153 based ones do work.

[lone-boy]

#80 (comment)
Please try this firmware