Hi everyone, we just encountered a problem with our clock: It is running slow with approximately 24 seconds per hour.
Some information: We use a PowerPC MPC8347 and its RTC (hardware wallclock). As far as I could see there is an optimization for reducing i2c actions: Once at startup the RTC is read in get_current_time() (with get_hw_seconds()). Afterwards get_current_time() always returns the result of this first read out plus cyg_current_time()-result. This leads to a correct time at booting, but from then on the mentioned delay of 24 sec per hour. The real-time clock constants are: numerator=1 000 000 000, denominator=1000, period=66500 (so 1 tick = 1 ms). (And I've verified the chip's I/O bus speed as well as the basic core speed.) Could there be a problem with these constants? Or perhaps interrupts disturbing the clock interrupt? Thanks in advance for any help / idea / comment!! cu Iris -- Iris Lindner Software Development Industrial Print and Apply Labelling www.Logopak.com -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
