Theodore P. Huntington wrote: > On 9/6/2007 8:52 AM, Karl Reichert wrote: > > Theodore P. Huntington wrote: > > > > Has anybody successfully created an embedded rtnet app (rtnet on a > > > > computer communicating in real-time with a MAC/PHY chip on a PCB)? Do > > > > you think it would be very complex to use a PCB with MAC/PHY to > > > > communicate in real-time with a computer running rtnet? > > thanks > Ted > > > > > > > Yes I do. I implemented a basic RTnet (only slave functionality) on an > > Infineon TriCore 1130 and a RTapp on top, both running fine. But I don't > > know if this is what you mean? > > Karl >
> Thanks, that is interesting to read about the 1130. How fast is your rt(at > 100Mb=10ns)? Is programming the 1130 expensive and difficult? I seethat > this device has an onboard 100Mb full duplex MAC. I have a robotwith many > motors and input sensors, and so I am comparing USB,Firewire, and ethernet > in terms of how fast I can move data from acomputer to and from these many > many external devices. > > thanks again, > Ted > In my specific tested case, I sent messages of 100 byte length with 1 master pc (reference rtnet 0.9.9) to 2 slaves (both TriCore 1130 with my own implementation). I can communicate with a cycle length of 200 microseconds or more without problems, which means that in each cycle all three are sending a message and no collisions occur. Karl -- von Karl Reichert Psssst! Schon vom neuen GMX MultiMessenger gehört? Der kanns mit allen: http://www.gmx.net/de/go/multimessenger ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
