Activity
From 09/18/2011 to 10/17/2011
10/17/2011
- JP 10:06 AM Software Development: RE: QNX BSP Timers
- Rob,
Have you tried using ClockCycles()?
John - JP 10:02 AM Software Development: RE: ClockPeriod
- Rob,
I see your point.
We have not provided the arm clock handling routines so in that sense, this would seem to be the arm-specific part of QNX. My understanding though, is that the kernel gets things like device specific handling...
10/13/2011
- RG 12:33 PM Software Development: RE: ClockPeriod
- John,
Actually, the point I was trying to make is that changing the system tick using ClockPeriod confuses the OS concept of time, which shouldn't happen. Using the attached program this is what happens:
# ./clock_period
ClockPer... - JP 09:16 AM Software Development: RE: ClockPeriod
- Rob,
I don't have experience trying to change the clock period. The documentation does seem to indicate that making the period very small can result in significant overhead in the system from all the interrupts. (see clock_setres() a... - JP 08:54 AM Software Development: RE: QNX BSP Timers
- Rob,
I don't know of a feature like this. I have always just used the CLOCK_REALTIME.
John
10/11/2011
- Hello,
I am having problems changing the system clock period using the QNX BSP. When I try to change it using the ClockPeriod function, it sets a value that confuses QNX as to the correct time. For example, if I try to change the pe... - Hello,
I have a need for a timer that supports a higher resolution than QNX CLOCK_REALTIME. It will be used for high accuracy timestamps, but probably will not need to drive an interrupt.
Is a feature like this already supported i...