Return statement in function called from WAIT command

dk_akj

This funktion wait for the word "Status", if not Status arrives within 4000 * 400 microseceonds the function invalid_msg is "called".

My question:
Where does the Return statement in line 7 return to (linenumber) ??


1: check_status:
2:· SERIN 14, BaudRate,Bad_Data,4000,invalid_msg , [noparse][[/noparse]WAIT("Status" ), STR SMSmsg\8 ]
3:· DEBUG "Status arrived !!",CR,LF·
4:
5: invalid_msg:
6:·· DEBUG "Invalid data !!",CR,LF
7:·· RETURN
8:
9:
10: Bad_Data:
11:· DEBUG· "Parity error",CR,LF
12:· RETURN

//Akj

Jon Williams

You need to replace the RETURN statements in your error blocks with GOTO label. When a serial input times out, there is an implicit GOTO, not a GOSUB as your code assumes.

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Jon Williams
Applications Engineer, Parallax
Dallas Office

dk_akj

Hey, thats fast support. Great

Like this ?

1: check_status:
2: SERIN 14, BaudRate,Bad_Data,4000,invalid_msg , [noparse][[/noparse]WAIT("Status" ), STR SMSmsg\8 ]
3: DEBUG "Status arrived !!",CR,LF
4:
5: invalid_msg:
6: DEBUG "Invalid data !!",CR,LF
7: goto somewhere
8:
9:
10: Bad_Data:
11: DEBUG "Parity error",CR,LF
12: goto somewhereelse

Thanks alot for the fast answer.

//Akj - from Denmark

Jon Williams

Yes, that's it. Usually a program -- after delivering an error message -- will do something to deal with that error, then return to the input attempt to try again.

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Jon Williams
Applications Engineer, Parallax
Dallas Office