The port is busy. Connection LimeRFE + LimeSDR

[egortaran]

Issue Description

Hello everyone. I would like to run srsRAN on LimeSDR v1.4s using LimeRFE amplifier. How to do it? I use this documentation. When I use LimeSuite GUI, following the instructions, the ports open.

LimeSDR

INFO: Disconnected control port
INFO: Reference clock 30.72 MHz
INFO: Connected Control port: LimeSDR-USB FW:4 HW:4 Protocol:1 GW:2.23 Ref Clk: 30.72 MHz

LimeRFE

Port opened
Firmware version: 1
Hardware version: 0x10

But since the device is already busy, I can not be able to connect srsRAN.

srsRAN

[ERROR] Cannot claim interface - Resource busy
[ERROR] Failed to open device
[ERROR] connection is not open
[ERROR] TransferPacket: Write failed (ret=0)
[ERROR] connection is not open
[ERROR] TransferPacket: Write failed (ret=0)
[ERROR] Failed to open. Device is busy.
Failed to create Soapy object
Error initializing radio.

Technology stack

Ubuntu 22.04 (Intel® Core™ i7-7700 CPU @ 3.60GHz × 8) srsRAN 22.04 (open5gs) LimeSDR v1.4s (LimeSuite v20.10.0, SoapySDR 0.7.2) LimeRFE 1v31

[9600]

Don't use LimeSuiteGUI to open the LimeSDR and instead just use this to connect to the LimeRFE and configure it. That way the SDR will be free for srsRAN to open.