[ts-7000] Re: Timer register reading changes abruptly. Timer reading is cashed.

["Sungjoon" <>]

Thanks 

The problem is gone now.

--- In  "randomyellowbits" <> wrote:
>
> 
> 
> --- In  "Sungjoon" <sjkim1988@> wrote:
> [snip]
> > This showed that the counter register doesn't change during multiple
> > readings, and suddenly jumps to a new value. It holds this value
> > for a while and changes again.
> [snip]
> > I defined the pointers volatile already. 
> > Someone suggested that MMAP is cashing. I also think so. Can
> > anyone help this issue?
> 
> I (another newbie) had a similar problem that resulted from
> omitting the O_SYNC in this line:
> 
>     fd = open("/dev/mem", O_RDWR  | O_SYNC);
> 
> HTH.
>




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