Thread Subject: Timeout when reading from serial connection

Hi,
I am reading data from a LeCroy oscilloscope using MATLAB's instrument control toolbox with a serial RS232 connection. It works great and I receive the data fine, but then MATLAB hangs until the timeout occurs. How can I tell it to stop reading once a terminator is received?
Here is the code:
while isempty(msg)
   [newData, count, msg] = fread(interface,elementsToRead,type);
   data = [data; newData];
end
The oscilloscope appends a terminator CR/LF to the end of each message but MATLAB ignores it.
Thanks.

"Jon " <jkopechek@hotmail.com> wrote in message
news:hdq25f$68j$1@fred.mathworks.com...
> Hi,
> I am reading data from a LeCroy oscilloscope using MATLAB's instrument
> control toolbox with a serial RS232 connection. It works great and I
> receive the data fine, but then MATLAB hangs until the timeout occurs. How
> can I tell it to stop reading once a terminator is received?
> Here is the code:
> while isempty(msg)
> [newData, count, msg] = fread(interface,elementsToRead,type);
> data = [data; newData];
> end
> The oscilloscope appends a terminator CR/LF to the end of each message but
> MATLAB ignores it.
> Thanks.

Hi Jon,

Serial FREAD will treat the data as binary and ignore the terminator while
Serial FSCANF will read and stop after receiving the terminator.