spatial stream index of nexmon daa

greetings,

Thanks for the good work!

@Gi-z it looks like the spatial stream index is NOT implement, do you have any clue for that?

It is pretty easy, in matlab it is like

payloadbytes = typecast(payload,'uint8');
if strcmp(DEVICE,'ASUS')
    
    core = bitand(payloadbytes(56),3); %
    rxss = bitand(bitshift(payloadbytes(56),-3),3);
    Nss(k) = core*4 + rxss;
    
else
    % payloadbytes(55)
    % 0 8 16 24
   % for NEXUS phone and PI
    Nss(k) =  round( payloadbytes(55)/8);
end

right after line 36 at csireader.m

Best

Jet

[Gi-z]

Thanks! The core/spatial bytes are currently parsed in each frame. I’ll just need to update the parsing logic to interpret antenna index correctly, and csitools.getCSI to assemble matrices considering antenna index in sequential frames.

[t5670116]

@yujianyuanhaha I have looked at your pcap file and one out of every four values is 0. Why is that? I would be happy to know. I also want to get the value of the 4x4 CSI in ASUS but the value is 0 when the cores are 3 and 4. I want to get the value of the 4 x 4 CSI. I need your help.