Hello,
I know it's an old post but it seems the problem wasn't answered.
I did face the same issue recently : the problem was ... owfs user is
missing the right to access to I2C buses.
The solution was to create an udev rule as bellow :
KERNEL=="i2c-*", GROUP="owfs", MODE="0660"
Bye
--
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On 02/12/2015 09:32 AM, Jan Kandziora wrote:
> Am 12.02.2015 um 17:19 schrieb Lukasz Salwinski:
>>
>> not loading ds2482 module did not help - the owfs filesystem is there:
>>
> Sorting that obvious error out:
>
> Have you connected Vdd of the DS18B20 to GND? That's important if you
> want parasite
Am 12.02.2015 um 17:19 schrieb Lukasz Salwinski:
>
> not loading ds2482 module did not help - the owfs filesystem is there:
>
Sorting that obvious error out:
Have you connected Vdd of the DS18B20 to GND? That's important if you
want parasite-power mode. But powering the chip with 5V would be bet
On 02/11/2015 11:22 AM, Jan Kandziora wrote:
> Am 11.02.2015 um 17:02 schrieb Lukasz Salwinski:
>>
>> I see... I've been religiously inserting ds2482 module. Does it mean
>> I only need i2c_bcm2708 and i2c_dev modules ? Besides ds2482 (explicitly
>> inserted) modprobe also returns
>>
> That's corr
And I should coffee before email.
Cheers,
C
> On Feb 11, 2015, at 12:12 PM, Jan Kandziora wrote:
>
>> Am 11.02.2015 um 20:39 schrieb Colin Reese:
>> I found the initial post of available methods confusing and
>> apparently misinterpreted your response.
> Sorry, I should have used the serial
Am 11.02.2015 um 20:39 schrieb Colin Reese:
> I found the initial post of available methods confusing and
> apparently misinterpreted your response.
>
Sorry, I should have used the serial comma.
http://www.verbicidemagazine.com/wp-content/uploads/2011/09/Oxford-Comma.jpg
Kind regards
Ja
I found the initial post of available methods confusing and apparently
misinterpreted your response.
C
> On Feb 11, 2015, at 11:30 AM, Jan Kandziora wrote:
>
>> Am 11.02.2015 um 20:12 schrieb Colin Reese:
>> Why on earth would you bitbang a 2482 on a Pi when a perfectly good
>> i2c bus exis
Am 11.02.2015 um 20:12 schrieb Colin Reese:
> Why on earth would you bitbang a 2482 on a Pi when a perfectly good
> i2c bus exists?
>
I beg your pardon?
Bitbanging *onewire* requires no additional chip and is done through a
configureable GPIO on the Raspberry Pi.
In addition, the w1 kernel drive
Am 11.02.2015 um 17:02 schrieb Lukasz Salwinski:
>
> I see... I've been religiously inserting ds2482 module. Does it mean
> I only need i2c_bcm2708 and i2c_dev modules ? Besides ds2482 (explicitly
> inserted) modprobe also returns
>
That's correct. Owfs can (and with --i2c= will) directly talk to
Why on earth would you bitbang a 2482 on a Pi when a perfectly good i2c bus
exists?
> On Feb 11, 2015, at 5:52 AM, Jan Kandziora wrote:
>
>> Am 10.02.2015 um 22:39 schrieb Colin Reese:
>> Wait, is that even possible? I thought w1 was for bitbanging on a GPIO,
>> having nothing to do with i2c
On 02/11/2015 06:03 AM, Jan Kandziora wrote:
> Am 10.02.2015 um 22:51 schrieb Lukasz Salwinski:
>>
>> w1 is hardwired to GPIO4 so I'm using GPIO17 to control SLPZ; I can toggle
>> DS2484 on/off by setting GPIO17 to 1/0. it seems to be another indicator
>> i2c side works fine... it's that just not
Am 10.02.2015 um 22:51 schrieb Lukasz Salwinski:
>
> w1 is hardwired to GPIO4 so I'm using GPIO17 to control SLPZ; I can toggle
> DS2484 on/off by setting GPIO17 to 1/0. it seems to be another indicator
> i2c side works fine... it's that just nothing shows up on the 1-wire side :o/
> lukasz
>
N
Am 10.02.2015 um 22:39 schrieb Colin Reese:
> Wait, is that even possible? I thought w1 was for bitbanging on a GPIO,
> having nothing to do with i2c.
>
There are w1 kernel drivers for ds2482, ds2490, bitbanging on a GPIO and
the synthesizeable ds1wm bus master.
CONFIG_W1_MASTER_DS2490=m
CONFIG_W
On 02/10/2015 01:34 PM, Jan Kandziora wrote:
> Am 10.02.2015 um 16:29 schrieb Lukasz Salwinski:
>>
>> I've checked the connections, changed Vcc to 5V but 18B20s still does not
>> register :o/ DS2483 are on the way but in the I'm tempted to connect the
>> sensors directly to rpi just to see if the
Wait, is that even possible? I thought w1 was for bitbanging on a GPIO,
having nothing to do with i2c.
On Tue, Feb 10, 2015 at 1:34 PM, Jan Kandziora wrote:
> Am 10.02.2015 um 16:29 schrieb Lukasz Salwinski:
> >
> > I've checked the connections, changed Vcc to 5V but 18B20s still does not
> > re
Am 10.02.2015 um 16:29 schrieb Lukasz Salwinski:
>
> I've checked the connections, changed Vcc to 5V but 18B20s still does not
> register :o/ DS2483 are on the way but in the I'm tempted to connect the
> sensors directly to rpi just to see if they are ok...
>
Have you made sure the w1 driver is
On 02/10/2015 10:12 AM, Colin Reese wrote:
> Is the bus found? Are you getting bus and no sensors or no bus?
yes. i2c side seems to be ok - i2cdetect reports device 18 and once owfs
is started the bus directory (together with a bunch of others) shows up.
the sensor directory is not there so I'm gu
Is the bus found? Are you getting bus and no sensors or no bus?
> On Feb 10, 2015, at 7:29 AM, Lukasz Salwinski wrote:
>
>> On 02/09/2015 05:15 PM, Paul Alfille wrote:
>> I carefully diff-ed the DS2483 and DS2484 data sheets. There are no
>> substantive differences. The DS2483 seems to be a li
On 02/09/2015 05:15 PM, Paul Alfille wrote:
> I carefully diff-ed the DS2483 and DS2484 data sheets. There are no
> substantive differences. The DS2483 seems to be a little fussier about
> having Strong Pull-up (SPU) stopped before a reset.
>
> Thus, I would have expected the DS2484 to work fine. C
I carefully diff-ed the DS2483 and DS2484 data sheets. There are no
substantive differences. The DS2483 seems to be a little fussier about
having Strong Pull-up (SPU) stopped before a reset.
Thus, I would have expected the DS2484 to work fine. Can you check your
hardware setup?
Paul
On Mon, Feb
On 02/09/2015 02:16 PM, Colin Reese wrote:
> Yes, I use DS2483 all over the place for years. See here for commands I
> use:
> http://www.cupidcontrols.com/2014/01/owfs-owserver-owhttp-owpython-and-a-little-1wire-pi/
ok.. I'll get myself some DS2483s...
thanks,
lukasz
> On Mon, Feb 9, 2015 at 2:1
Yes, I use DS2483 all over the place for years. See here for commands I
use:
http://www.cupidcontrols.com/2014/01/owfs-owserver-owhttp-owpython-and-a-little-1wire-pi/
On Mon, Feb 9, 2015 at 2:13 PM, Lukasz Salwinski
wrote:
> On 02/09/2015 01:20 PM, Colin Reese wrote:
> > Interesting. So the only
On 02/09/2015 01:20 PM, Colin Reese wrote:
> Interesting. So the only thing different here is the level translation goes
> down to 1.8V vs. 3.3V compared to the DS2483?
it looks like this is the only difference in the specs I can find...
Is DS2483 supported ? owfs documentation mentions only DS248
Interesting. So the only thing different here is the level translation goes
down to 1.8V vs. 3.3V compared to the DS2483?
On Mon, Feb 9, 2015 at 12:59 PM, Lukasz Salwinski
wrote:
> Hello,
>does owfs support DS2484 (I2C/1-wire bridge) ? I've just hooked it
> up to raspberry pi and I can see i
Hello,
does owfs support DS2484 (I2C/1-wire bridge) ? I've just hooked it
up to raspberry pi and I can see it on the i2c bus but no matter how
I connect 18B20 sensor to it (with or without explicit power line)
they don't show up in the 1 wire directory :o/
thanks,
lukasz
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