Peter Dannegger wrote:
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The only condition:
You should disable interrupts for no longer than the time between two interrupts, since a second overflow can occur before the first is serviced.

E.g. if you reload the timer to get the next interrupt after 1000 cycle, the interrupt can be disabled for no longer than 990 cycles ( less 10 cycle because of the maximum interrupt response time).
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Sorry Peter,
you are absolutely right, but I thought that rewrite made your wording clearer.

Steve