RE: [misterhouse-users] ibutton Questions

[Paulsen, B. <BPa...@le...>]

Answers...
1) In a sense, it does queue them up.  Basically, the software sleeps for
the right amount of time after a command is sent.  However, it counts on the
fact that it's the only one writing/reading from the bus.  So, as long as
you don't have another program writing to the bus, you should be fine.

2) I believe it should make sure that the right I/O bit is turned on.  You
may want to double check this, though.  

3) Getting the 1-wire network to work reliably takes a bit of work.  If your
network is short, I would suggest changing the ibutton_line_length
(something like that at least) to SHORT.  If it's long, I would strongly
suggest adding a 100-ohm resistor on your data line.

4) Last, but not least.  If you think the problem is in the mh software, you
may want to confirm this by seeing what kind of success you have with the
iButton windows software.  

Brian

-----Original Message-----
From: nwrightson [mailto:nwr...@te...]
Sent: Wednesday, January 08, 2003 3:41 AM
To: mis...@li...
Subject: [misterhouse-users] ibutton Questions


Hi All,

I'm very new to MisterHouse (and Perl)and I have a couple of I button 
questions that I hope somebody out there might be able to answer.
1. If I send a ibutton command ie set $ib_relay 'on'; and then send 
another similiar command straight away. Will the second command get 
qued until the first has been processed or is it lost. I know that the 
1wire hardware interface can only perform one task at a time. Question 
is does the Misterhouse driver que the commands.

2. Does the Misterhouse driver ensure that the relevant I/O bit is 
actually turned on.

3. I have used the following code with nothing else being accessed and 
I may receive a series of "Present 1" ie 4..6 times and then 2 or 
3 "Not Present" 

my $nwtest ;
 if ($New_Minute)
{
 $nwtest = is_present $ib_PS_OP ;
if ($nwtest eq 1)
{
       print_log "Present $nwtest";
}
elsif ($nwtest eq 0)
{
       print_log "NOT Present $nwtest";
}
else
{
       print_log "unknown Present state $nwtest";
}
}
I'm trying to make a reliable ibutton network in my house, but it does 
not look good at this stage.

Cheers,

Neil.
nwr...@bi...

 



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