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

[jerry-harm]

I'm using ASIX Electronics Corp. AX88179 based USB dongles and E316 with the newest master branch built host driver and factory original firmware, the CODEC error occurs, is there any idea to solve it?