Thread Subject: Clear InputBuffer

Is there a way to clear the inputbuffer when using a serial
port without having to close or delete it?

Jeremy

Jeremy wrote:
> Is there a way to clear the inputbuffer when using a serial
> port without having to close or delete it?

I don't know if there is a specific buffer clear (I haven't looked
at the facilities much) -- but you could use

fread(s,s.BytesAvailable)

and then just not do anything with what you read.


--
Q = quotation(rand);
if isempty(Q); error('Quotation server filesystem problems')
else sprintf('%s',Q), end

Walter Roberson <roberson@hushmail.com> wrote in message <Pvqsk.36221$hx.24348@pd7urf3no>...
> Jeremy wrote:
> > Is there a way to clear the inputbuffer when using a serial
> > port without having to close or delete it?
>
> I don't know if there is a specific buffer clear (I haven't looked
> at the facilities much) -- but you could use
>
> fread(s,s.BytesAvailable)
>
> and then just not do anything with what you read.
>
>
> --
> Q = quotation(rand);
> if isempty(Q); error('Quotation server filesystem problems')
> else sprintf('%s',Q), end

If you have Instrument Control Toolbox, you can use 'FLUSHINPUT' and/or 'FLUSHOUTPUT' to flush out the input and output buffer.

flushinput(serialObj);
flushoutput(serialObj);

-Ankit