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

["randomyellowbits" <>]

--- In  "Sungjoon" <> 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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