Re: [oopic] Converting a string value to a numeric value?

At 10:00 PM 8/1/2007, thetruth_as_i_seeit wrote:
>I'm trying to receive data to my OOPic R through a serial port
>connected to a laptop. I want to use this data to control objects
>from the OOPic but, in order to do that, I need to convert the string
>data that is coming from the serial port to numeric data.

It would help if you indicated exactly what "strings" you plan on
sending. I don't imagine you'll be sending single character commands forever.

>In C, there is a specific function for this called atoi, but I can't
>find anything like it in the OOPic manual.

There isn't anything like it. You'll have to roll your own.

>Just in case anybody wants to see it, here is my code ...
>
>Dim A As New oDIO1
>Dim B as New oSerial
>
>Sub Main()
> A.IOLine = 8
> A.Direction = cvOutput
> B.Baud = cv9600
> B.Operate = cvTrue
> A = 0
> Do
> If B.Received = cvTrue then
> B.Value = B.value

I take it you're echoing the characters back to the PC here?

> End If
> A = B

That will (sometimes) grab the NEXT character from the serial port
and put it in A.

> Loop
>End Sub
>
>Obviously, this doesn't work because B is not a zero or one in a
>numerical sense, and what I am picking up is ASCI code ... in other
>words a whole bunch of zeros and ones.

You need to convert from ASCII characters to numeric values. You
need an atoi...

>Any thoughts?

Sure. It looks like you want to send '0' or '1' to turn the DIO1 off or on.

a = 0
do
if b.received then
c = b // copy rcvd character to c (declare c as a byte variable)
b = c // echo character back to PC

// set a to zero or one

a = c - 48 // '0' = ASCII code #48, '1' = ASCII code #49
end if
loop

You'll have to clean that up for whatever OOPic "language" you're
using (BASIC?)

I imagine you'd like to do more than just toggle a single DIO1 - so
what's next?

...Andy

Yahoo! Groups Links

<*> To visit your group on the web, go to:

http://groups.yahoo.com/group/oopic/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:

http://groups.yahoo.com/group/oopic/join

(Yahoo! ID required)

<*> To change settings via email:
mailto:oopic-digest@yahoogroups.com
mailto:oopic-fullfeatured@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
oopic-unsubscribe@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:

http://docs.yahoo.com/info/terms/