1-Wire Filesystem for Linux -- Accessing the Dallas 1-wire network for sensors, memory, identity ()

Eric Allen | 2 Nov 2007 00:07

putting a DS2480 into overdrive

I've got a DS2480 hooked up to a Linksys WRT54G running owfs 2.6p4. I'd like to experiment with running the bus in overdrive mode. What do I need to do to put it into overdrive? Writing a "1" to /tmp/1wire/system/adapter/overdrive.0 didn't seem to change its value from 0.

-Eric

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Paul Alfille | 2 Nov 2007 01:59

Re: putting a DS2480 into overdrive

You are about a week ahead of me. With the new "interface" and bus-specific settings, the structure is in place for serial overdrive. The actual bit-level commands aren't there yet.

Part of the delay is pondering how to signal when overdrive fails and the speed has to drop back to regular.

Paul Alfille

On 11/1/07, Eric Allen <ericpallen <at> gmail.com> wrote:

I've got a DS2480 hooked up to a Linksys WRT54G running owfs 2.6p4. I'd like to experiment with running the bus in overdrive mode. What do I need to do to put it into overdrive? Writing a "1" to /tmp/1wire/system/adapter/overdrive.0 didn't seem to change its value from 0.

-Eric

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Eric Allen | 2 Nov 2007 02:21

Re: putting a DS2480 into overdrive

Ah. I didn't realize that whole discussion meant overdrive wasn't going yet. Is it operational with the 2490 or something?

On 11/1/07, Paul Alfille <paul.alfille <at> gmail.com> wrote:

You are about a week ahead of me. With the new "interface" and bus-specific settings, the structure is in place for serial overdrive. The actual bit-level commands aren't there yet.

Part of the delay is pondering how to signal when overdrive fails and the speed has to drop back to regular.

Paul Alfille

On 11/1/07, Eric Allen < ericpallen <at> gmail.com> wrote:
I've got a DS2480 hooked up to a Linksys WRT54G running owfs 2.6p4. I'd like to experiment with running the bus in overdrive mode. What do I need to do to put it into overdrive? Writing a "1" to /tmp/1wire/system/adapter/overdrive.0 didn't seem to change its value from 0.

-Eric

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Paul Alfille | 2 Nov 2007 02:54

Re: putting a DS2480 into overdrive

On 11/1/07, Eric Allen <ericpallen <at> gmail.com> wrote:

Ah. I didn't realize that whole discussion meant overdrive wasn't going yet. Is it operational with the 2490 or something?

Yes

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Thomas Berg | 3 Nov 2007 12:36

php_ow

Hi,

I´ve recently compiled owfs with php support and dosen´t get it to work. 
If I try to run a sample I get this error

php owphp_test.php
*** glibc detected *** free(): invalid pointer: 0xb6fbe0b0 ***
Aborted

running on debian etch with PHP5

PHP-script looks like
<?php

 require "load_php_OW.php";
 init( "localhost:3001" );

 //get( "/10.301639010800/present" );

 finish();

?>
and load_php_OW.php is not modified at all.

Any ideas?

Regards,
Thomas

Detta E-postbrev har kontrollerats avseende virus.

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Christian Magnusson | 4 Nov 2007 08:22

Re: php_ow

I fixed it in the cvs..

diff -u -r1.29 globals.c
--- module/owlib/src/c/globals.c        7 Oct 2007 22:57:32 -0000       1.29
+++ module/owlib/src/c/globals.c        4 Nov 2007 07:10:14 -0000
 <at>  <at>  -53,7 +53,7  <at>  <at> 
 #endif

     .opt = 0 ,
-    .progname = "One Wire File System" ,
+    .progname = NULL , // "One Wire File System" , Can't allocate here
since it's freed
     .want_background = 1 ,
     .now_background = 0 ,

> -----Original Message-----
> From: owfs-developers-bounces <at> lists.sourceforge.net [mailto:owfs-
> developers-bounces <at> lists.sourceforge.net] On Behalf Of Thomas Berg
> Sent: den 3 november 2007 12:37
> To: owfs-developers <at> lists.sourceforge.net
> Subject: [Owfs-developers] php_ow
> 
> Hi,
> 
> I´ve recently compiled owfs with php support and dosen´t get it to
> work.
> If I try to run a sample I get this error
> 
> php owphp_test.php
> *** glibc detected *** free(): invalid pointer: 0xb6fbe0b0 ***
> Aborted
> 
> running on debian etch with PHP5
> 
> PHP-script looks like
> <?php
> 
>  require "load_php_OW.php";
>  init( "localhost:3001" );
> 
>  //get( "/10.301639010800/present" );
> 
>  finish();
> 
> ?>
> and load_php_OW.php is not modified at all.
> 
> Any ideas?
> 
> Regards,
> Thomas
> 
> Detta E-postbrev har kontrollerats avseende virus.
> 
> 
> 
> -----------------------------------------------------------------------
> --
> This SF.net email is sponsored by: Splunk Inc.
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Thomas Berg | 4 Nov 2007 09:49

Re: php_ow

Hi,

Great, I´ll try the cvs version.

Best regards,
Thomas
Christian Magnusson skrev:
> I fixed it in the cvs..
>
> diff -u -r1.29 globals.c
> --- module/owlib/src/c/globals.c        7 Oct 2007 22:57:32 -0000       1.29
> +++ module/owlib/src/c/globals.c        4 Nov 2007 07:10:14 -0000
>  <at>  <at>  -53,7 +53,7  <at>  <at> 
>  #endif
>  
>      .opt = 0 ,
> -    .progname = "One Wire File System" ,
> +    .progname = NULL , // "One Wire File System" , Can't allocate here
> since it's freed
>      .want_background = 1 ,
>      .now_background = 0 ,
>
>
>
>   
>> -----Original Message-----
>> From: owfs-developers-bounces <at> lists.sourceforge.net [mailto:owfs-
>> developers-bounces <at> lists.sourceforge.net] On Behalf Of Thomas Berg
>> Sent: den 3 november 2007 12:37
>> To: owfs-developers <at> lists.sourceforge.net
>> Subject: [Owfs-developers] php_ow
>>
>> Hi,
>>
>> I´ve recently compiled owfs with php support and dosen´t get it to
>> work.
>> If I try to run a sample I get this error
>>
>> php owphp_test.php
>> *** glibc detected *** free(): invalid pointer: 0xb6fbe0b0 ***
>> Aborted
>>
>> running on debian etch with PHP5
>>
>> PHP-script looks like
>> <?php
>>
>>  require "load_php_OW.php";
>>  init( "localhost:3001" );
>>
>>  //get( "/10.301639010800/present" );
>>
>>  finish();
>>
>> ?>
>> and load_php_OW.php is not modified at all.
>>
>> Any ideas?
>>
>> Regards,
>> Thomas
>>
>> Detta E-postbrev har kontrollerats avseende virus.
>>
>>
>>
>> -----------------------------------------------------------------------
>> --
>> This SF.net email is sponsored by: Splunk Inc.
>> Still grepping through log files to find problems?  Stop.
>> Now Search log events and configuration files using AJAX and a browser.
>> Download your FREE copy of Splunk now >> http://get.splunk.com/
>> _______________________________________________
>> Owfs-developers mailing list
>> Owfs-developers <at> lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/owfs-developers
>>     
>
>
> -------------------------------------------------------------------------
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> Still grepping through log files to find problems?  Stop.
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> Download your FREE copy of Splunk now >> http://get.splunk.com/
> _______________________________________________
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> Owfs-developers <at> lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/owfs-developers
>
> Detta E-postbrev har kontrollerats avseende virus.
>
>
>   

Detta E-postbrev har kontrollerats avseende virus.

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Paul Alfille | 4 Nov 2007 23:34

Re: Support of DS28EA00

Dan,
You are in the best condition to judge, but the PIO controls (sense, PIO, latch) should work. At least if the datasheet is accurate.

Paul Alfille

On 11/4/07, Dan Ohnesorg <Dan <at> ohnesorg.cz> wrote:

I am trying to use this chip with owfs python bindings. I know, that the
chip is not fully supported, but the temperature seems be read very well.
I am also not able to use the PIO pins of the device.

I see in the code some functions for reading/writing into PIO. Is there some
expectation, when the support of PIO will come? I can eventually try to
finish it, but I don't know if there is some special problem? I won't use
the PIO for cascading, but I will use it as regular PIO for LED indication
of status.

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Tim Sailer | 5 Nov 2007 23:45

AAG wind vane

Since I've started using owfs for my weather station, I've had real bad
luck with my wind vanes on both stations. I keep getting log entries
like:

Nov  5 16:45:49 unslept OWFS[24045]: OW_volts: Failed to start conversion
Nov  5 16:46:03 unslept OWFS[24045]: OW_volts: Failed to start conversion
Nov  5 16:46:04 unslept OWFS[24045]: OW_volts: Failed to start conversion
Nov  5 16:46:05 unslept OWFS[24045]: OW_volts: OW_r_mem_crc16_AA Failed

Going back to other programs (like oww), they read the A/D properly for
long periods of time. Am I doing something wrong? Do you think pushing power
to the station is a cure? I have a few spare pair running up the pole at
least on the station here in NY.

Tim

--
Tim Sailer
Coastal Internet, Inc.
www.buoy.com
631-399-2910

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njh | 6 Nov 2007 00:14

Re: AAG wind vane

On Mon, 5 Nov 2007, Tim Sailer wrote:

> Going back to other programs (like oww), they read the A/D properly for
> long periods of time. Am I doing something wrong? Do you think pushing power
> to the station is a cure? I have a few spare pair running up the pole at
> least on the station here in NY.

I would run a separate power up, make sure the supply is floating - don't 
form a loop in the power and signal grounds.  You can fairly easy dumpster 
dive for 5V small output switchmodes in the 10W range.

You can test the usefulness of the idea with a 5V battery supply up the 
pole.

njh

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