On Fri, 02 Jun 2006 11:03:29 +0100, David Woodhouse <[email protected]> wrote:
> On Thu, 2006-06-01 at 23:48 -0700, Pete Zaitcev wrote:
> >
> > > The tests I've done so far weren't anything serious: as the mobile supports a
> > > AT command set, I have used the ones (with minicom) which transfers more data.
> > > Of course that I also did module load/unload tests, tried to disconnect the
> > > device while it's transfering data and so on.
> >
> > Next, it would be nice to test if PPP works, and if getty and shell work
> > (with getty driving the USB-to-serial adapter).
>
> xmodem is a good test -- better than PPP because it stresses the
> buffering in a way which PPP won't. Log into a remote system, try
> sending and receiving files with xmodem.
I understand. My intent was different, however. One of the bigger sticking
points for usb-serial was its interaction with line disciplines, which are
notorious for looping back and requesting writes from callbacks
(e.g. h_hdlc.c). They are also sensitive to drivers lying about the
amount of free space in their FIFOs. This is something you never test
when driving a serial port from an application, no matter how cleverly
written.
-- Pete
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