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 >> > > > _______________________________________________ Mono-devel-list mailing list Mono-devel-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-devel-list