ZCU102+AD9082 Matlab Communication Toolbox Support - Hardware Setup Issue

The setup process for the Zynq SDR support package does not apply to the High-Speed Converter Toolbox, it just relies upon the core libraries inside of it. The toolbox requires that you are using an ADI authored SD card: https://wiki.analog.com/resources/tools-software/linux-software/embedded_arm_images not the one from MathWorks.

-Travis 

Hello~ Is it possible that MathWorks would work for AD9081? We were wondering if it is helpful to replace AD9082 with AD9081 (if it is more straightforward to setup AD9081). Thanks, Vanessa 

vceecs said:

Is it possible that MathWorks would work for AD9081?

What do you mean by this? If you mean MATLAB and not MathWorks, the High-Speed Converter Toolbox will control and stream data from either the AD9082 or AD9081 using the same System Object (adi.AD9081.Rx/Tx).

-Travis

In the Matlab, I am trying to get a frame of data: (I am referring to this example code: github.com/.../ad9081PFIR.m)

uri = 'ip:169.254.145.15';
%% RX
rx = adi.AD9081.Rx();
rx.uri = uri;
rx.EnabledChannels = 1;
rx.SamplesPerFrame = 32768;
data = rx();

But got errors:

Error using matlabshared.libiio.base/cstatus
Channel: voltage2_i not found

Error in adi.common.Attribute/setAttributeLongLong (line 13)
            cstatus(obj,status,['Channel: ' id ' not found']);

Error in adi.AD9081.Base/CheckAndUpdateHW (line 75)
                    obj.setAttributeLongLong(id,attr,value(k),output, tol, phy);

Error in adi.AD9081.Rx/setupInit (line 204)
            obj.CheckAndUpdateHW(obj.ChannelNCOFrequencies,...

Error in adi.common.RxTx/configureChanBuffers (line 219)
            setupInit(obj);

Error in matlabshared.libiio.base/setupImpl

Error in adi.common.RxTx/setupImpl (line 117)
            setupImpl@matlabshared.libiio.base(obj);

Error in Untitled2 (line 7)
data = rx();

The sampling is NaN, and it doesn't have a set method:

>> rx

rx = 

  adi.AD9081.Rx with properties:

             SamplingRate: NaN
    ChannelNCOFrequencies: [0 0 0 0]
       MainNCOFrequencies: [0 0 0 0]
         ChannelNCOPhases: [0 0 0 0]
            MainNCOPhases: [0 0 0 0]
                 TestMode: 'off'
              EnablePFIRs: false
            PFIRFilenames: ''
          SamplesPerFrame: 32768
          EnabledChannels: 1
                      uri: 'ip:169.254.145.15'

>> rx.SamplingRate = 1000
In class 'adi.AD9081.Rx', no set method is defined for Dependent property 'SamplingRate'.  A Dependent property needs a set method to assign its value.

Do you know how to resolve it?

The sample rate is not a tunable property at runtime. It can only be done through the device tree and will be bound by the available clocks and references.

https://wiki.analog.com/resources/tools-software/linux-drivers/iio-mxfe/ad9081

This applies as well: https://wiki.analog.com/resources/eval/user-guides/rf-trx-vcxo-and-profiles

What device tree are you currently using with AD9082?

-Travis

I am using this device tree: https://github.com/analogdevicesinc/linux/blob/master/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-rev10-ad9082-m4-l8.dts

Does it have some default settings?

The IIO Oscilloscope GUI works fine. 

M=4 in that config so you will only have 4 channels (voltage0_i, voltage0_q, voltage1_i, voltage1_q). The default AD9081 class assumes 8 channels.

To set it to 4 run you need to update the constructor call to:

rx = adi.AD9081.Rx('num_data_channels',2); % <- Number is complex channel pairs.

-Travis

Are there any other modifications that need to be made so the AD9081 class can adapt AD9082?

I changed the number of channels:

uri = 'ip:169.254.145.15';
%% RX
rx = adi.AD9081.Rx('num_data_channels',2); % <- Number is complex channel pairs.
rx.uri = uri;
rx.EnabledChannels = [1,2];
rx.SamplesPerFrame = 32768;
data = rx();

But still got Errors:

>> Untitled2
Error using matlabshared.libiio.base/cstatus
Channel: voltage2_i not found

Error in adi.common.Attribute/setAttributeLongLong (line 13)
            cstatus(obj,status,['Channel: ' id ' not found']);

Error in adi.AD9081.Base/CheckAndUpdateHW (line 75)
                    obj.setAttributeLongLong(id,attr,value(k),output, tol, phy);

Error in adi.AD9081.Rx/setupInit (line 204)
            obj.CheckAndUpdateHW(obj.ChannelNCOFrequencies,...

Error in adi.common.RxTx/configureChanBuffers (line 219)
            setupInit(obj);

Error in matlabshared.libiio.base/setupImpl

Error in adi.common.RxTx/setupImpl (line 117)
            setupImpl@matlabshared.libiio.base(obj);

Error in Untitled2 (line 7)
data = rx();

InvasiveBrush said:

Are there any other modifications that need to be made so the AD9081 class can adapt AD9082?

No. The number of channels is configurable through the constructor.

Can you update the number of channelizers as well:

rx = adi.AD9081.Rx('num_data_channel',2,'num_coarse_attr_channels',2,'num_fine_attr_channels',2);

-Travis

It works! Thanks.

So for AD9082, use:
tx = adi.AD9081.Tx('num_data_channels',2,'num_coarse_attr_channels',2,'num_fine_attr_channels',2);
rx = adi.AD9081.Rx('num_data_channels',2,'num_coarse_attr_channels',2,'num_fine_attr_channels',2);

Jiachen