dataflow diagram - Data flow chart without end is possible? -

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dataflow diagram - Data flow chart without end is possible? -

my programme infinite loop keeps checking whether motion sensor (pir) value 0 or 128. if 128 takes picture, checks if scheme armed, sends notification , starts top again. if pir value 0 or if scheme not armed, starts top well. made effort design create chart im not sure if ok have no end. think?

dataflow-diagram

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