Problem with system time in lpc176x bsp

Marcos Díaz marcos.diaz at
Fri Dec 18 19:18:07 UTC 2015

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
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?




Marcos Díaz

Software Engineer

San Lorenzo 47, 3rd Floor, Office 5

Córdoba, Argentina

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

Skype: markdiaz22
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the devel mailing list