Marcel van Lieshout wrote:
> I have a routine as part of my main loop which does some math on 32bit
> integers. The integervalues are stored into the variables by the
> interrupt-routine. It can happen, of course, that my main routine is
> fetching the values while the interruptroutine is storing new values
> into the variables. This overlap would be at least 8 cycles (fetch
> four bytes/store four bytes). Is it possible to hold off interrupt
> processing for, let's say, a dozen cycles?

Just shut off interrupts around the foreground code that reads the 32 bit
value.  By the way, you only need 7 of the 8 cycles to be executed with
interrupts off.


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