On 2010-09-02, Iris Lindner <[email protected]> wrote: > Hi everyone, > we just encountered a problem with our clock: It is running slow with > approximately 24 seconds 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.)
When you say "verified" do you mean with a recently calibrated frequency counter? Your error is only 100ppm (0.01%). > 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 -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
