Can i convert the following code into Matlab embedded function(for simulink use)

Hello,

I would like to write the matlab equivalent of the following code(pascal) into a Matlab embedded function, then put this block into my simulink model. I need all this mess because i want to send a value via RS-232 from simulink to a microcontroller, and for some reason, only the values in the range of 65..127 are received correctly by the uC.

I have 2 questions:

1. is it correct to use matlab embedded function

2. if yes, could somebody help and send me the converted code

Here is the pascal code:

var y:array[1..10] of byte;
    u: longint;    //input number
    i,nr:byte;
    s:boolean;

begin

newu:=0;
nr:=0;
s:=false;

if u<0 then s:=true;

while u<>0 do 
 begin
  newu:=newu*10+(u mod 10);
  u:=u div 10;
  inc(nr);
 end;

for i:=nr downto 1 do           //puts the digits of input number into string
 begin  
  y[i]:=(newu mod 10);    
  newu:=newu div 10;
 end;

for i:=1 to nr do
 begin
  case y[i] of
  0: y[i]:=65;
  1: y[i]:=66;
  2: y[i]:=67;
  3: y[i]:=68;
  4: y[i]:=69;
  5: y[i]:=70;
  6: y[i]:=71;
  7: y[i]:=72;
  8: y[i]:=73;
  9: y[i]:=74;
 end;
end.

Answer 1

[Walter Roberson]

If I scan the pascal correctly, then you might be able to use something like

y = sprintf('%d', u) - '0' + 'A';
nr = length(y);

Answer 2

[Ryan G]

I'm not sure if this will help but there is a RS232 Blockset on the file exchange you should probably check out.

I try to avoid MATLAB functions in Simulink whenever possible. Sometimes you may do something that doesn't generate c-code well in the MATLAB function and then you'll get stuck when you go to deploy the controller.

I would suggest looking at the blockset to see if you can workaround using this code, if not comment back and edit the snippet above to be a bit more readable. See here