Thank to both of you, I do appreciate the information. I have read and implemented several of the instructions that have the cape manager in /sys/devices/cape_mgr.9/slots to read the temperature and they work sure enough. The problem is, I have an older Rev B device that is running the image debian-8.3-ixqt and the device tree is slightly different. I followed a couple of examples and I couldn't get it to work so I figured I needed to understand how the mechanism works because eventually I need to turn on and off some devices via a transistor and just copying something from the web doesn't tell me what each section of the device tree does. and how the two versions, different capemgr locations, are different.
The last example i tried suggested i put the dtbo in /boot/uEnv.txt and now the bone won't boot, all four led's stay lit so I feel it is time to stop counting on guess work and hope that what someone writes in a blog somewhere actually has worked on a recent image and figure out what I am doing. Thanks for all of your help. On Saturday, March 5, 2016 at 6:46:27 PM UTC-8, William Hermans wrote: > > In addition to what Robert has shown you there . . . the internet is > literally littered with guides, blogs, and random ramblings on getting the > ds18x20 devices working on both the Beaglebone's, and the rPI . . . Heres > one. > > > http://mkaczanowski.com/one-wire-ds1820-thermometer-with-beaglebone-black-libmicrohttpd/ > > > On Sat, Mar 5, 2016 at 7:39 PM, Robert Nelson <[email protected] > <javascript:>> wrote: > >> >> On Mar 5, 2016 8:00 PM, "Ray Madigan" <[email protected] <javascript:>> >> wrote: >> > >> > I have been looking for way too long so maybe I don't know what to >> search for. >> > >> > I am attempting to get the ds18B20 temperature sensor working on a rev >> b beaglebone black that is running jessie 4.5 that I downloaded from the >> official place. I have a beaglebone rev c that uses the capemgr device >> tree mechanism and I know how to make that work. I can't seem to find any >> reference that will get me started with the no capemgr device tree >> implementation. >> > >> > Can someone point me to a place that will help me figure this out? Or >> should I go back to the original angstrom distribution? >> >> >> https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-W1-P9.12-00A0.dts >> >> >> https://github.com/beagleboard/bb.org-overlays/blob/master/examples/BB-W1-P9.12/example.sh >> >> Regards, >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
