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Can''t ID my Weather Station 1-Wire devices — Parallax Forums

Can''t ID my Weather Station 1-Wire devices

ArchiverArchiver Posts: 46,084
edited 2004-01-06 05:08 in General Discussion
I haven't run that program in a long time, but it does still work. I
just tried it on a DS2760; a device we're using in a thermocouple
interface.

I know a lot of people have had trouble connecting to the AAG. Of the
three we purchased to play with, two were bad or had bad parts. I found
I needed a 1K pull-up on the 1-Wire buss to get reliable communications
with the station that does work.

-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office


Original Message
From: cdundorf@j... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=fQO3VzHv4B7FJKH5NjX1qVHKSjwtthuRYfxdYTBeaTYt9FAsxriPmFbXHSOK1pnpWr3g-0WLPIqHlLc]cdundorf@j...[/url
Sent: Monday, January 05, 2004 9:30 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Can't ID my Weather Station 1-Wire devices


I'm using the code developed by Jon Williams in 4/01 to identify the
ROM codes within my AAG (formerly DS) 1 Wire Weather Station V3.0. I
ultimately would like to display weather data on an LCD but let's do one
thing at a time. I have a BS2P40 plugged into a P40 Demo Board. I
placed a jumper from P15 to X6 which traces over to the RJ11 jack. I
first tested the Ver3.0 Weather Station on my PC (via the serial port
adaper that comes with the station), then plugged it into the RJ11 jack
on the P40 Demo Board. When I run the code (first 10 lines listed
below) all I get on the debug screen is:
"Searching for 1-Wire Device
ow_pin = 15"

I don't understand why this is happening. Does any have suggestions for
what to do or check?

Thanks,
Chris Dundorf

' Listing 1
' Nuts & Volts - Stamp Applications, April 2001

' {$STAMP BS2p,OWSEARCH.BSP,DSNAMES.BSP}

'
[noparse][[/noparse] Title
]
'
' File...... SRCHDEMO.BSP
' Purpose... Demonstrates Dallas 1-Wire Search Algorithm
' Author.... Jon Williams
' E-mail.... jonwms@a...
' Started... 27 FEB 2001
' Updated... 05 MAR 2001

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