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AnnexF/average_st.txt
author laurent
Sun, 13 Dec 2009 11:41:22 +0100
changeset 234 e4d31cd0e6d8
parent 0 fb772792efd1
permissions -rwxr-xr-x
Using function_call_iterator in generate_c_inlinefcall instead of creating a new visitor
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
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 FUNCTION_BLOCK AVERAGE
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   VAR_INPUT
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     RUN : BOOL ;      (* 1 = run, 0 = reset *)
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     XIN : REAL ;     (* Input variable *)
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     N   : INT ;      (* 0 <= N < 128 or manufacturer- *)
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   END_VAR            (*      specified maximum value  *)
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   VAR_OUTPUT XOUT : REAL ; END_VAR (* Averaged output *)
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   VAR SUM  : REAL := 0.0; (* Running sum *)
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       FIFO : DELAY ;      (* N-Element FIFO *)
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   END_VAR
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   SUM := SUM - FIFO.XOUT ;
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   FIFO (RUN := RUN , XIN := XIN, N := N) ;
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   SUM := SUM + FIFO.XOUT ;
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   IF RUN THEN XOUT := SUM/N ;
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   ELSE SUM := N*XIN ; XOUT := XIN ;
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   END_IF ;
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 END_FUNCTION_BLOCK
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