Hi, On Sun, Oct 23, 2011 at 4:30 PM, Graeme Russ <graeme.r...@gmail.com> wrote: > Hi Wolfgang, > > On Monday, October 24, 2011, Wolfgang Denk <w...@denx.de> wrote: >> Dear Graeme Russ, >> >> In message < > calbutcjh8bvzfvh14d83wr2jov89o9jvjo9vzzb7r_zgkzz...@mail.gmail.com> you > wrote: >>> >>> > Problems happen only with multi-line input, so it is perfectly fine >>> > to handle just that - at the root cause, i. e. when input turns into >>> > multi-line input. >>> >>> Can the U-Boot command line handle multiple commands per line (delimited > by >>> ; for example) >> >> Yes, it can. >> >>> If so, could it not be possible that a Kermit/ymodem command followed by > a >>> time consuming command on the same line cause lost input? >> >> I don't think so. All serial transfers use a protocol - and when the >> transfer is complete, it does not matter any more, because no more >> data are flowing. > > My point is that the transfer turns off flow control - When the transfer > completes, flow control will be off when the next command begins to run. > If the next command is one which takes a long time to execute and it is on > the same line as the transfer command (i.e. no \r to send XOFF) and the > user types something then that input can be lost. > > I think the solution is fairly trivial though - During the processing of > commands entered via readline(), cause an XOFF to be sent each time (i.e. > immediately before) the command string is dispatched a to the command > processor just in case the previous command called getc() (and thus caused > an XON to be sent)
I had a go at a patch for this, will send out tomorrow. It will need fixing up for xmodem etc. So far it works ok with minicom but not ser2net. It is pretty simple. I think Albert mentioned that XON/XOFF was invented in 1962. Maybe it will come back into fashion? Not at all sure it will... Regards, Simon > > Regards, > > Graeme > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot > > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
