FMCOMMS5 + ZC702, Linux Drivers, IIO-OSC Calibration crashes

Hello,

From what I know unfortunately there might be some sort of issue with the IIO-OSC calibration feature. Regarding the Matlab Transceiver Toolbox it appears to be supported on the main branch https://github.com/analogdevicesinc/TransceiverToolbox/tree/master/%2Badi/%2BFMComms5, however the release notes show documentation only up to fmcomms4 https://analogdevicesinc.github.io/TransceiverToolbox/master/.

The functions for phase_sync and calibration come from a different library, libad9361-iio https://github.com/analogdevicesinc/libad9361-iio, but I figured you might have already installed this one. It appears to have matlab bindings as well, so most likely you can do this from matlab and access the functions available here https://github.com/analogdevicesinc/libad9361-iio/blob/main/ad9361.h.

It can also be done from python, here is an example of how the library is called: https://github.com/analogdevicesinc/pyadi-iio/blob/adrv9361_prod/test/test_fmcomms5_prod.py#L446.

I hope that this helps with your issue.

Best Regards,
Ramona

Thank you, Ramona, unfortunately the Windows Installer for libad9361-iio on github cannot be downloaded, I get the error:

{"message":"Artifact not found or access denied."}

I'm not sure how to access this function via Matlab. I mean, there is theoretically a way to access c-functions in Matlab, but then there is the issue of passing the rx.adi.fmcomms5 Matlab data object to a c function. Can you provide a simple example? It is really sad that there is no MCS function provided in the Transceiver Toolbox by default for FMCOMMS5.

But anyway, I think it would be much easier to access the console and call the MCS-function on the board itself remotely, since I have libad9361-iio installed there. I am searching the entire forum for a few days now, I cannot find a working example. Could you help me please, I would be very grateful for this line of console code.

UPDATE: I found the Windows installer for libad9361-iio and installed it, but where are all the files? I also found the right MATLAB command, I think:

https://github.com/analogdevicesinc/TransceiverToolbox/blob/d1a745221f759e2a483cdb45cf2bf7a79961961e/%2Badi/%2BFMComms5/Rx.m#L297

 now I have written a public method in Rx.m in the FMComms5 folder:

		function MultiChipSync(obj)
		    setupLibad9361(obj);
          calllib('libad9361','ad9361_fmcomms5_multichip_sync',obj.iioCtx,uint32(3));
		end

I have also tried this:

 ip_address= 'analog.local';
 iio_ctx = calllib('libiio', 'iio_create_network_context', ip_address);
calllib('libad9361','ad9361_fmcomms5_multichip_sync',iio_ctx,uin;t32(3))

As shown, I use this function the same way as it is done in the setupInit(obj) function in the same file, but I often get the error that the Library was not found. When it does not return an error, the device actually does not perform the MCS as there are still random phase differences between e.g. RX 1/2 and RX 3/4 whenever I change the RX LO and call the function. I'm also not sure if the MCS that is done during the Initialization (said line 297) is working at all because whenever I turn on the device, there always is a random phase difference between the mentioned RX channels. Maybe the problem is that i create a new iio_ctx, but I see not other way..

There is also this very helpful script which shows how to call library functions: https://github.com/analogdevicesinc/libad9361-iio/blob/main/test/testLoadLibrary.m

Hello,

I am happy to hear you managed to install the library! Unfortunately I think the main release version does not include the Matlab bindings. Could you please try with this version?

libad9361-iio is included in the packaged toolboxes for Transceiver Toolbox. You can see it within the deps folder once installed.

If you are cloning and building you can use the helper functions to get it:

u = adi.utils.libad9361

u.download_libad9361()

-Travis

Thanks to both of you! @Ramona: thank you for your effort, unfortunately I'm stuck somewhere else now and cannot verify your file, but It works without it too, at least the functions I need were there by default.