Problems with com program

[Bob Haynes]

Hello, I'm new to power basic and I was given the task of
fixing this program!!

The program is connecting to a serial buffer device and
polling records out of the device into the program.
It appears that the code is making a clean connection and
the data is comming into the program.

Here is the code that I have a question about...

Open "COM1:1200,N,8,1" AS #2
Open "CALLREC" For Append As #3
DELAY 3
Rem
Rem ********* BEGIN DATA COLLECTION ***********
Rem
MAIN:
If Loc(2) > 20 Then
'perform logic
End If


Through debugging my program using an evaluate on Loc(2), I
noticed that the value is '?????'

Does anyone know of any reason that Loc(2) is never receiving
any of the data from the buffer device?

Thanks so much for your assistance.

Bob

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[Trevor Ridley]

I'm no expert on this, but it seems to me you should be using COMM OPEN and COMM SET to make the connection. The PB help file describes it all...


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Trevor

[Clay Clear]

Trevor is absolutely correct. The 32-bit PB compilers do not use
the same comm open syntax and comm parameters setting syntax as
the PB/DOS compiler does. They are completely different.


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[This message has been edited by Clay Clear (edited August 08, 2003).]

[mark pruitt]

Bob, what version of PowerBASIC are you using? I haven't looked at the help
file for PBDOS in a while, but in Console Compiler and PBWin70 the help section
for Serial Communications is one of the more accurate write-ups I've been able
to find.

Another consideration; is there any type of protocol being used (RTS, CTS, etc)?


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Mark Pruitt
[email protected]

[This message has been edited by mark pruitt (edited August 08, 2003).]

[Bob Haynes]

Sorry everyone for the confusion! Again, I'm a newbie! I'm
using Power Basic for Dos. Compiler version 3.5. I will repost
on the PB for Dos board also.

Thanks Bob.

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[Paul Dixon]

Bob,
<< evaluate on Loc(2), I noticed that the value is '?????'>>

I don't think you can display a function's value in the debugger, try assigning it to variable and display the variable instead.

e.g. xx&=loc(2)
while watching xx& in the debugger.

Paul.



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