MATLAB: I couldn’t able to run Level 2 M-file S function…

Question

Below is my Level 2 M-file S function,

function svpwm_states(block)
function setup(block)
  block.NumInputPorts  = 2;
  block.NumOutputPorts = 1;
  block.SetPreCompInpPortInfoToDynamic;
  block.SetPreCompOutPortInfoToDynamic;
  block.InputPort(1).DirectFeedthrough = false;
  block.InputPort(2).DirectFeedthrough = false;
  block.SampleTimes = [-1 0];
  block.SimStateCompliance = 'DefaultSimState';
  block.RegBlockMethod('PostPropagationSetup',    @DoPostPropSetup);
  block.RegBlockMethod('Start', @Start);
  %block.RegBlockMethod('InitializeConditions', @InitializeConditions);
  block.RegBlockMethod('Outputs',@Output);  
  block.RegBlockMethod('Update', @Update);
function DoPostPropSetup(block)
  block.NumDworks = 1;
    block.Dwork(1).Name            = 'k';
    block.Dwork(1).Dimensions      = 1;
    block.Dwork(1).DatatypeID      = 0;      % double
    block.Dwork(1).Complexity      = 'Real'; % real
    block.Dwork(1).UsedAsDiscState = true;
    %block.Dwork(2).Name            = 'x';
    %block.Dwork(2).Dimensions      = 1;
    %block.Dwork(2).DatatypeID      = 0;      % double
    %block.Dwork(2).Complexity      = 'Real'; % real
    %block.Dwork(2).UsedAsDiscState = true;
function Start(block)
  block.Dwork(1).Data = 0;
function Output(block)
  block.OutputPort(1).Data = block.Dwork(1).Data;
function Update(block)
  vsd = block.InputPort(1).Data;
  vsq = block.InputPort(2).Data;
    k = block.Dwork(1).Data;
    if vsd>0 & vsq>=0 & vsd>vsq;
          k=k+1;
      elseif vsd>0 & vsq>=0 & vsd<=vsq;
          k=k+2;
      elseif vsd<=0 & vsq>0;
          k=k+3;
      elseif vsd<0 & vsq<=0 & vsd<vsq;
          k=k+4;
      elseif vsd<0 & vsq<0 & vsd>=vsq;
          k=k+5;
      elseif vsd>=0 & vsq<0;
          k=k+6;
    end
      block.Dwork(1).Data = k;
function Terminate(block)

but when I tried to RUN the m-file, it's not showing any error. It didn't run at all. Plus when I used this block in my simulink model it didn't create two I/P port as declare in the code. I'm using this S function for the first time…Where am I going wrong, can any one suggest it??

Answer 1

You need to call setup from your top-level function:

function svpwm_states(block)
  setup(block);