Hi! On 22:31 Sat 13 Dec , Domen Puncer wrote: > Hello! > > This has been bugging me for some time now, so I thought I'd fish for > ideas. > > The device in question is a wireless transceiver with max rate 2 Mbit/s. > It has 3 32-byte RX buffers, and all data and commands (except external > interrupt and chip enable pins) is transferred through <=10 MHz SPI bus. > > At max speed this makes receiving difficult, since there's >7000 packets > per second (and using all three buffers still makes it necessary to have > delay between transfers <0.4 ms). > > The simple solution with irqs handled in workqueue missed packets, I > guess it couldn't keep up; reasonable, since the delays are very small. I do not know, if it helps, but it might be interesting for you: http://mail.nl.linux.org/kernelnewbies/2008-06/msg00276.html http://mail.nl.linux.org/kernelnewbies/2008-07/msg00004.html -Michi -- programing a layer 3+4 network protocol for mesh networks see http://michaelblizek.twilightparadox.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
