Reply To: BB60C matlab bbgetiq.m example code

[jgauthier]

Andrew,

Still not seeing triggers. Could it be the order I’m executing things?

bbConfigureIO(int32(0), int32(64))

bbConfigureIQCenter(CenterFreq)

bbConfigureIQ(downsample, bandwidth)

vsgSetFrequency(CenterFreq)

bbConfigureIQCenter(CenterFreq)

bbInitiate(uint32(4), uint32(0))

vsgSubmitTrigger()

vsgSubmitIQ(iqPtr, count)

vsgFlushAndWait()

GetIQData(iqCount, purge)

I tried switching the order of vsgFlushAndWait and GetIQData, but it makes no difference.

In GetIQData, I have:

function [status, iqArray] = GetIQData(handle, iqCount, purge)
    nullPtr = int32(0); 
    purgeArg = int32(purge);

    iqArrayPtr = libpointer('singlePtr', zeros(iqCount*2, 1));
    iqCountInt = int32(iqCount);

    triggerPtr = libpointer('int32Ptr', ones(4,1)); % pointer to array of 32-bit integers
    triggerCount = int32(4); % size of the trigger array (32-bit int)

    status = calllib('bb_api','bbGetIQUnpacked',handle,...
            iqArrayPtr,iqCountInt,triggerPtr,triggerCount,...
            purgeArg,nullPtr,nullPtr,nullPtr,nullPtr);
    calllib('vsg_api', 'vsgFlushAndWait', handle);
    fprintf('Triggers:\n');
    triggers = triggerPtr.Value;
    disp(triggers);
    % Convert results to complex numbers
    iqArray = reshape(iqArrayPtr.Value, 2, iqCount);
    iqArray = iqArray(1,:) + 1i * iqArray(2,:);
    iqArray = transpose(iqArray);
end % of GetIQData

And I still find no triggers – disp(triggers) shows:

Triggers:
   0
   0
   0
   0

Any hints?

Thanks,
JonG