On 2014-01-03 16:10, Klemen Dovrtel wrote: > Can you change the number used by the master to overflow the Cycle Number. > The number 4.151.347.200 is very close to 2^32 (which is the maximum Cycle > Number) and suits to all phasing/period defined by 4 bits (16 in decimal).
Then we also need to restrict period to <= 16, rejecting other values. Some automatic calculation of the overflow number + a rejection of configurations where this becomes >= 2^32 would be nicer. Jan > On Friday, January 3, 2014 12:22 PM, Jan Kiszka <jan.kis...@web.de> wrote: > > On 2013-12-12 21:13, Klemen Dovrtel wrote: > >> Hello everybody, >> >> I am studding rtnet documentation and i am not sure of Rtnet slave <phasing> >> and <period> setup. >> >> How does the slave knows it is his turn to send data? I assume all the >> informations should be in the Synchronisation Frame -> Cycle Number field >> which is incremented by one in every new cycle, and it is reset to zero on >> overflow. What i am not sure is when does it overflow? I would suspect that >> the overflow number is set in a way that the (overflow_number+1) can be >> divided by all period numbers in the tdma.conf file without a reminder. >> Otherwise the slave slots can not be evenly distributed. I could not find >> any information about this. >> > > Good point! This is not taken into account by the implementation. So if > the configuration contains non-power-of-two periods, it will face > skipped slots on wrap-around of the 32-bit cycle counter. > > Jan >
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