Subject:
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Re: Can C See?
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 18 Feb 1999 03:19:38 GMT
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Viewed:
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1084 times
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The source to NQC has some classes that take care of all the serial port
protocol stuff (without requiring Spirit.ocx). You can download the code
from http://www.enteract.com/~dbaum/lego/nqc/index.html
You'll want to use the RCX_Link class. The following code snippet should
be close to what you need....
RCX_Link link;
RCX_Cmd cmd;
UByte buf[2];
link.Open();
cmd.Set(kRCX_ReadOp, kRCX_VariableType, n); // n = the variable number
link.Send(cmd);
link.GetReply(buf, 2); // read reply data into buf
link.Close();
Of course, you'll probably want to do error checking, etc. If you
download the code and have trouble getting started, just send me an
e-mail.
Dave
In article <36CB2EFC.6378@sprynet.com>, B@BigB.net wrote:
> All I want to do is have a C program check the value
> of a variable on the RCX.
>
> Do I have to use Spirite.ocx somehow from C?
>
> Can't I just send some data to the Com port were the Ir tower is?
>
> Or is it a big mess?
>
> (Why does VB work and not C?)
>
>
> Thanks,
> Brandon Yates
--
reply to: dbaum at enteract dot com
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Message is in Reply To:
 | | Can C See?
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| All I want to do is have a C program check the value of a variable on the RCX. Do I have to use Spirite.ocx somehow from C? Can't I just send some data to the Com port were the Ir tower is? Or is it a big mess? (Why does VB work and not C?) Thanks, (...) (26 years ago, 17-Feb-99, to lugnet.robotics)
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