Error Found unsupported dynamic matrix type at output port: 0

Hi Team

I am getting the below error while HDL code generation.

HDL Code Generation Check Report for 'Coordinator_fixpt'

Generated on 2021-10-08 12:37:34

HDL Conformance check complete with 2 errors, 0 warnings, and 0 messages.

Function LocationLevelDescription

Coordinator_fixpt:48ErrorFound unsupported dynamic matrix type at output port: 0, name 'beacon', in the file/function Coordinator_fixpt.

Coordinator_fixpt:0ErrorMATLAB HDL Coder failed in the code generation phase. See HDL Coder conformance report.

Below is the code part

function [frameOctets] = LifiMACFrame(SSID,beaconInterval,FrameType,Type,payload)  
data = 0;

if strcmp(FrameType, 'Data')
    
    if ~isempty(payload)
        data = payload;
    end
    
    frameOctets = macGenerateMPDU(FrameType,data,SSID,beaconInterval,Type);
    
else
    
    frameOctets = macGenerateMPDU(FrameType,data,SSID,beaconInterval,Type);    ----- > error hitting here.
    
end

end

Attaching the whole code for reference purpose.

Could you please help here.

Thanks,

Answer 1

[Walter Roberson]

macGenerateMPDU appears to be written in a way that uses dynamic memory instead of having fixed maximum variable size.

Dynamic memory is a problem for HDL, as HDL needs to know exactly how many memory cells to allocate gates for.

[Athira Km]

how to make/change a variable from dynamic memory to fixed point?

while i gave frame(1:312) = <code> it was throwing error. Could you please throw some light on this.

[Athira Km]

Also tried like below. but not making any changes in the error.