On 1/19/07, Mario Munda <[EMAIL PROTECTED]> wrote: > Hi > > The example from the HowToSystemIOPorts > (http://www.mono-project.com/HowToSystemIOPorts) doesn't work, for > starters... > > Transmiting part works ok, but not the receiving. > > P.S.: > I use FreeBSD, and I'm sending data to /dev/cuad0. > > Best Regards > > Carlos Alberto Cortez pravi: > > Hey, > > > > Could you cook a test case? That way we can try to take a look at the > > issue. > > > > Carlos. > > > > > >> First, I can succesfully read a text string, when I "loopback" a > >> serial cable, connecting pins 2 and 3.... I send the string and can > >> read it immediatly, it worked fine for me in Linux (running mono as > >> root, my mono version is 1.2.2). The code I used is the same found in > >> http://www.mono-project.com/HowToSystemIOPorts > >> > >> But I cannot succeed in another mono application, where I try to > >> communicate to an external device using modbus (binary protocol). The > >> device correctly understands my query, and I know it responds (because > >> a "TX" led blinks in the device), but mono can't get any data from the > >> port. Depending on mono version, and whether I'm root or not, I can > >> get two types of error... sometimes a "timeout" exception is raised, > >> and sometimes i get a byte with a "255" value. > >> > >> I tryed other (non-mono) applications to communicate to the same > >> external device, and they work ok in Linux, and also in Windows. > >> > >> I'm still debugging, but maybe there is something with DTR signals, > >> etc., or maybe a bug with binary communications. > >> > >> i'll keep trying and will post if I find a solution.... > >> > >> if anyone got binary communications working OK, please inform what was > >> the os distributon/ monon version used...eventually i could change my > >> system set-up, if that fixed the problem.... > >> > >> thanks, Victor > >> _______________________________________________ > >> Mono-devel-list mailing list > >> Mono-devel-list@lists.ximian.com > >> http://lists.ximian.com/mailman/listinfo/mono-devel-list > >> > > > > > > >
Hi, I have to take back what I said earlier about SerialPort working without problems. The binary helper has a small mistake that causes it to throw TimeoutException prematurely when EINTR is issued. I have updated the bug (http://bugzilla.ximian.com/show_bug.cgi?id=79073) and provided a patch. Could the maintainer inspect the patch and commit it? Regards, Leszek [skolima] Ciesielski -- MS-DOS user since 5.0 Windows user since 3.11 Linux user since kernel 2.4 Novell Netware user since 2.2 WARCRAFT user since 1.0 _______________________________________________ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list
