Problem with system time in lpc176x bsp

[Marcos Díaz]

Hi, i'm using c++ chrono to measure a steady signal periods (With GPIO
interrupts), And I see that periodically I have errors of +1ms and then of
-1ms. (I discarded GPIOP interrupts problem) I tried using rtems API's
rtems_clock_get_uptime_nanoseconds
and then I saw the same errors.
I'm suspecting of some problem related with interrupts and the updating of
bintime uptime in kern_tc.c related to the simple downcounter ticker this
bsp has.
Has anybody seen something like this in any other bsp?
Thanks!

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Marcos Díaz

Software Engineer


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Córdoba, Argentina


Phone: +54 351 4217888 / +54 351 4218211/ +54 351 7617452

Skype: markdiaz22
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