Mercurial Mercurial > matiec / annotate
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
AnnexF/delay_st.txt
author Mario de Sousa <msousa@fe.up.pt>
Sat, 10 Mar 2012 11:27:49 +0000
changeset 473 933d6c204607
parent 0 fb772792efd1
permissions -rwxr-xr-x
Add a TODO comment.
0
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     1
 
FUNCTION_BLOCK DELAY    (* N-sample delay *)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     2
 
  VAR_INPUT
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     3
 
    RUN : BOOL ;     (* 1 = run, 0 = reset *)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     4
 
    XIN : REAL ;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     5
 
    N   : INT        (* 0 <= N < 128 or manufacturer- *)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     6
 
  END_VAR            (*      specified maximum value  *)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     7
 
  VAR_OUTPUT XOUT : REAL; END_VAR   (* Delayed output *)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     8
 
  VAR X : ARRAY [0..127]     (* N-Element queue *)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
     9
 
               OF REAL;      (* with FIFO discipline *)
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    10
 
      I, IXIN, IXOUT : INT := 0;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    11
 
  END_VAR
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    12
 
  IF RUN THEN IXIN := MOD(IXIN + 1, 128) ; X[IXIN] := XIN ;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    13
 
              IXOUT := MOD(IXOUT + 1, 128) ; XOUT := X[IXOUT];
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    14
 
  ELSE XOUT := XIN ; IXIN := N ; IXOUT := 0;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    15
 
       FOR I := 0 TO N DO X[I] := XIN; END_FOR;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    16
 
  END_IF ;
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    17
 
END_FUNCTION_BLOCK
fb772792efd1 Initial commit. Last MatPLC CVS with some makefile inclusion removed in order to compile fine out of MatPLC.
etisserant
parents:
diff changeset 
    18
 












matiec