MATLAB serial timeout handling.

Question

0 个投票

A have a "default"-configured serial port. How do I implement timeout error handling?

If I do something like this:

try
     fread(SerialObject, 1, 'uint8');
catch err
     myError(err)
end

it does not read that as an error (never executes catch block).

What is the proper way to handle it in this situation?

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显示 -2更早的评论隐藏 -2更早的评论

Answer 1

Chirag Gupta 2011-7-22

1 个投票

The Timeout is a warning and hence you are unable to catch it. Searching a little, I found a couple of references that might be helpful:

May be something like this:

lastwarn('');
try
  fread(s)
  if(~isempty(lastwarn))
     error(lastwarn)
  end
catch err
   err
end

Answer 2

Chirag Gupta 2011-7-22

0 个投票

Chirag Gupta 2011-7-22

Note this will only work for async operations

Adam 2011-7-22

Chirag -- exactly! So what is a good way to handle this on synchronous serial connections?