Hi All,
Currently testing with a DS1990A and the latest kernel but no luck so far
The iButton is not seen by the Carambola.I will keep hammering away at it.
BTW any reason you went for 3.3v instead of 5v ?
Serge
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| Carambola and 1-wire https://www.8devices.com/community/viewtopic.php?f=1&t=73 |
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| Author: | Sprite_tm [ 25 Mar 2012, 18:23 ] |
| Post subject: | Carambola and 1-wire |
| Author: | tgdavies [ 26 Mar 2012, 01:27 ] |
| Post subject: | Re: Carambola and 1-wire |
Cool -- I mean hot! Are you using parasitic power, or connecting 3.3v to the 1-wire devices too? |
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| Author: | Sprite_tm [ 26 Mar 2012, 06:23 ] |
| Post subject: | Re: Carambola and 1-wire |
At the moment, I'm using parasitic power - though I think the DS1820s need to have a bit more power than the parasitic pull-up can deliver... that's why I lowered the pull-up to 1K myself. It still works, although I get a CRC error every now and then, but I intend just to filter those out in software. |
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| Author: | pakistano [ 27 Mar 2012, 20:11 ] |
| Post subject: | Re: Carambola and 1-wire |
patch file is empty... |
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| Author: | Sprite_tm [ 27 Mar 2012, 20:18 ] |
| Post subject: | Re: Carambola and 1-wire |
Hmm, that's not right... moment, I'll see if I can find out what went wrong... |
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| Author: | Sprite_tm [ 27 Mar 2012, 20:28 ] |
| Post subject: | Re: Carambola and 1-wire |
Ok, no idea why the file ended up being zero-bytes, but I re-diffed and re-uploaded; it should be OK now. |
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| Author: | tgdavies [ 25 Apr 2012, 12:35 ] |
| Post subject: | Re: Carambola and 1-wire |
I got this working too, thanks to your instructions. My kernel seems to be linux-3.2.13, not the linux-2.6.39.4 you mention, but the patch still applied and works (with a pair of DS1820s). Am I misinterpreting the version number somehow? Tom |
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| Author: | Sprite_tm [ 25 Apr 2012, 16:08 ] |
| Post subject: | Re: Carambola and 1-wire |
That's possible, perhaps they've updated the git repo. I'll take a look at it when I have the time. |
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| Author: | ssozonoff [ 05 Jun 2012, 22:16 ] |
| Post subject: | Re: Carambola and 1-wire |
Hi All, Currently testing with a DS1990A and the latest kernel but no luck so far The iButton is not seen by the Carambola.I will keep hammering away at it. BTW any reason you went for 3.3v instead of 5v ? Serge |
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| Author: | Sprite_tm [ 05 Jun 2012, 23:21 ] |
| Post subject: | Re: Carambola and 1-wire |
Hmm, I'll try to check it out with the new kernel when I'm done with the LCD driver. I've connected it to 3.3V because iirc the Carambolas inouts aren't 5V compatible. |
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