Mity CPU Platforms » ARM9 Based QNX Platforms

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... Rob Gillis

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... John Pruitt

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 John Pruitt

10/11/2011

RG 05:08 PM Software Development: ClockPeriod

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... Rob Gillis

RG 02:30 PM Software Development: QNX BSP Timers

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... Rob Gillis