MATLAB serial communication with Prop

CHAD.G · 2011-03-14 06:46

Anyone here achieved serial communication between their Prop and MATLAB? I'm attempting to use FullDuplexSerialPlus along with the MATLAB commands specified in the help docs. I'm struggling to get the devices to even connect on the COM port.

Thanks for any help.

Leon · 2011-03-14 07:03

Get it working with an ordinary terminal program, initially.

CHAD.G · 2011-03-14 07:09

Leon wrote: »

Get it working with an ordinary terminal program, initially.

As in the Parallax Serial Terminal window? Done. It's not what I'm trying to send that I'm stuck on, it's simply connecting the Prop and MATLAB to the COM port that I'm stuck.

(Note: Sending me links to the MATLAB help files will not assist me further at the moment, I'm already looking through those).

Mike G · 2011-03-14 07:24

Propeller Pins 30 and 31 on COM 5

CON
    _clkmode = xtal1 + pll16x
    _xinfreq = 5_000_000

    
DAT
  message     byte      "Hello World",0

OBJ
  serial : "FullDuplexSerial"


PUB main

  serial.Start(31, 30, 0, 115200)
  
  repeat 
    serial.str(@message)
    serial.tx(13)
    waitcnt(cnt + clkfreq/2)

Matlab

function SerialTest()

    % Set the port paramenter
    s=serial('COM5', 'BaudRate', 115200, 'Parity', 'none', 'DataBits', 8, 'StopBits', 1);
    s.terminator = 'CR';
    % open the port
    fopen(s);
    
    % display the com port resources
    com = instrfind;
    disp(com);
  
    % Expecting x bytes
    out=fread(s,11);
    
    % Display the byte
    disp(out);
    
    % Clean up
    fclose(s);
    delete(s);
    clear s;
end

Unsoundcode · 2011-03-14 07:36

There is a post at this link http://forums.parallax.com/showthread.php?106241-Connect-the-Boe-Bot-to-MATLAB&p=748346 where a BS2 was used to send a message to Matlab , the OP refers to a web page with instructions.

I don't have Matlab so I don't know how useful this information would be for you.

Jeff T.

MATLAB serial communication with Prop

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