Hi Vladislav, On 10/13/2010 11:35 AM, [email protected] wrote: > Hello Wolfgang, > >> I'm following the discussion and realized that it will not work for >> devices doing the local loopback in hardware, like the flexcan >> controller. > > What is actually the advantage of using hardware loopback? One can > always quit using it and use Tx interrupt for self reception ...
Hey, we care about overhead ;-). CAN can cause high interrupt loads, especially at 1 MB/s. >> Strictly speaking it will only work properly for drivers >> doing the local loopback in software when the TX done interrupt is >> handled. Also some USB devices are not able to do that properly. > > Yes, active cards is a problem. The firmware shall support self > reception > and loop back the sent messages in order to guarantee correct behavior. > The timestamp is also pain ... I agree. Wolfgang. _______________________________________________ Socketcan-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/socketcan-users
