Target Language Compiler

Solution

%% File    : dp_read.tlc
%% Abstract:
%%  Dual-Port Read block target file for S-function dp_read.
%%
%% Copyright (c) 1994-1999 by The MathWorks, Inc. All Rights Reserved.
%%


%implements "dp_read" "C"


%% Function: Outputs ==========================================================
%% Abstract:
%% Dual port read for the dp_read.mex S-function, (e.g. dp_read.dll).
%%  Read the value from the specified address entered in the S-function
%%  parameters and write to the output location:
%%      Y = *dpAddress
%%
%%  In the dp_read, the Parameters are defined to be:
%%      offset,gain,variableType,hardwareAddress
%%
%function Outputs(block, system) Output
  /* %<Type> Block: %<Identifier> */
  {
    %assign offset    = CAST("Real",P1.Value[0])
    %assign gain      = CAST("Real",P2.Value[0])
    %assign varType   = LibBlockParameterString(P3)
    %assign hwAddress = LibBlockParameterString(P4)
    %assign y         = LibBlockOutputSignal(0, "", "", 0)
    volatile %<varType> *dpAddress = (%<varType> *) %<hwAddress>;
    %<y> = ((real_T) *dpAddress) * %<gain> + %<offset>;

  }

%endfunction %% Outputs

Further Hints

"Hello World" Example with model.rtw File