owfs-developers

[Owfs-developers] OWFS 3.2P4 will build on Raspberry Pi

[<han...@at...>]

Hello!
I've just downloaded and built the latest release of OWFS on the Raspberry
Pi device that I normally use for first tries of the OWFS system. All I saw
while doing so were the usual wonky warnings from the Debian based build
tools on the device. I haven't tried building this release on Slackware as I
do not have a 64 bit 14.2 system available so we can take this report as
factual for the Pi device.

Hardware is a DS9097U device using an FTDI FT232 and MAX232A based adapter,
they are talking to a pair of DS2406 devices. 

Further studies will be on a Pi3 and a Pi Zero W Or a PI Zero in gadget zero
Ethernet mode talking to a regular Pi Zero.

Right now I'm working with Maxim to make arrangements to send a pair of
DS2484 devices, and then a pair of DS28E17 devices as well. (I might have
those.)

We know from earlier discussions that the Pi will work to talk to a device
that uses the I2C methods. But what about those two? 
-----
Gregg Levine han...@at...
"They were in the wrong place at the wrong time. Naturally they became
heroes." Princess Leia Organa of Alderann Senator

Re: [Owfs-developers] OWFS 3.2P4 will build on Raspberry Pi

[Jan K. <jj...@gm...>]

Am 24.10.20 um 06:31 schrieb han...@at...:
>
> Right now I'm working with Maxim to make arrangements to send a pair of
> DS2484 devices, and then a pair of DS28E17 devices as well. (I might have
> those.)
>
Be aware the DS28E17 is a 3.3V only device. It's not 5V tolerant. At
first it appears to be but you will fry it instantly if a 5V onewire is
connected while the power is disconnected.


> We know from earlier discussions that the Pi will work to talk to a device
> that uses the I2C methods. But what about those two?
>
The DS28E17 is only supported by the kernel driver. So you need to use
it with one of the Onewire host adapters that is supported by the
kernel. OWFS isn't involved but may be run in parallel with the --w1
option, or independently on other host adapters.

Do not use both the ds2482 kernel driver and the --i2c option of OWFS on
the same I²C Onewire hostadapter. This meant concurrent access on the
DS2484 chip and leads to all kind of tricky malfunctions.

Kind regards

	Jan

Re: [Owfs-developers] OWFS 3.2P4 will build on Raspberry Pi

[<han...@at...>]

Hello!
Thank you confirming that. I do not plan on using the kernel driver for the functions. 
--
Gregg Levine han...@at...
"They were in the wrong place at the wrong time. Naturally they became heroes." Princess Leia

-----Original Message-----
From: Jan Kandziora <jj...@gm...> 
Sent: Saturday, October 24, 2020 5:37 PM
To: OWFS (One-wire file system) discussion and help <owf...@li...>
Subject: Re: [Owfs-developers] OWFS 3.2P4 will build on Raspberry Pi

Am 24.10.20 um 06:31 schrieb han...@at...:
>
> Right now I'm working with Maxim to make arrangements to send a pair of
> DS2484 devices, and then a pair of DS28E17 devices as well. (I might have
> those.)
>
Be aware the DS28E17 is a 3.3V only device. It's not 5V tolerant. At
first it appears to be but you will fry it instantly if a 5V onewire is
connected while the power is disconnected.


> We know from earlier discussions that the Pi will work to talk to a device
> that uses the I2C methods. But what about those two?
>
The DS28E17 is only supported by the kernel driver. So you need to use
it with one of the Onewire host adapters that is supported by the
kernel. OWFS isn't involved but may be run in parallel with the --w1
option, or independently on other host adapters.

Do not use both the ds2482 kernel driver and the --i2c option of OWFS on
the same I²C Onewire hostadapter. This meant concurrent access on the
DS2484 chip and leads to all kind of tricky malfunctions.

Kind regards

	Jan


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Re: [Owfs-developers] OWFS 3.2P4 will build on Raspberry Pi

[Nico B. <ni...@cu...>]

I'm using a raspberry zero with a ds2482-100 board.  OWFS software is the one from the debian repo it's self 3.1p5. (debian 9)

I's running stable for a couple of months now. Pi zero is in a greenhouse who has a ethernet connection (usb to ethernet) with ds2408 and ds2438 (humidity)

https://fstab.nl/Raspberry-Pi-zero

Nico


han...@at... wrote:
> Hello!
> I've just downloaded and built the latest release of OWFS on the Raspberry
> Pi device that I normally use for first tries of the OWFS system. All I saw
> while doing so were the usual wonky warnings from the Debian based build
> tools on the device. I haven't tried building this release on Slackware as I
> do not have a 64 bit 14.2 system available so we can take this report as
> factual for the Pi device.
> 
> Hardware is a DS9097U device using an FTDI FT232 and MAX232A based adapter,
> they are talking to a pair of DS2406 devices.
> 
> Further studies will be on a Pi3 and a Pi Zero W Or a PI Zero in gadget zero
> Ethernet mode talking to a regular Pi Zero.
> 
> Right now I'm working with Maxim to make arrangements to send a pair of
> DS2484 devices, and then a pair of DS28E17 devices as well. (I might have
> those.)
> 
> We know from earlier discussions that the Pi will work to talk to a device
> that uses the I2C methods. But what about those two?
> -----
> Gregg Levine han...@at...
> "They were in the wrong place at the wrong time. Naturally they became
> heroes." Princess Leia Organa of Alderann Senator
> 
> 
> 
> 
> _______________________________________________
> Owfs-developers mailing list
> Owf...@li...
> https://lists.sourceforge.net/lists/listinfo/owfs-developers
> 

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