I found Jason's hint to be a bit short on explanations, so here is what Robert Nelson led me through. It is was I reported that I did with a BBB + Robotic Cape but didn't know if it would work with a Blue. I take Jason's answer to be yes it will work with a Blue. On July 11 Robert wrote in my earlier email stream titled "where is capemgr?"
It's not a service file, it's the device tree binary: https://github.com/RobertCNelson/dtb-rebuilder/blob/4.4-ti/src/arm/am335x-boneblack-roboticscape.dts#L19 Change: #include "am335x-bone-common-no-capemgr.dtsi" to: #include "am335x-bone-common.dtsi" He also led me through how to compile it and boot it, etc. I won't try to repeat that here from memory. Then do the usual capemgr boot line directive with partno=BB-ADC I still believe that this configuration can live with the rc_* apps and services, as long as you only use one at a time. Turns out we haven't been hearing from James (the rc_* creator) on this because he is way way way out of the county for the summer. Clark On Thursday, August 3, 2017 at 9:25:18 PM UTC-7, Jason Kridner wrote: > > > > On Aug 3, 2017, at 4:57 PM, Mark A. Yoder <mark.a...@gmail.com > <javascript:>> wrote: > > Sounds like a good idea. How do I turn on the ADC drivers? > > > > https://github.com/RobertCNelson/dtb-rebuilder/blob/4.4-ti/src/arm/am335x-boneblack-custom.dts#L56 > > > --Mark > > On Thursday, August 3, 2017 at 2:45:44 PM UTC-4, Jason Kridner wrote: >> >> >> >> On Aug 3, 2017, at 2:32 PM, Mark A. Yoder <mark.a...@gmail.com> wrote: >> >> It looks like when the Blue comes out of the box, running a current image >> it's all set up to run the Robotics stuff. You can access the ADCs, servos, >> etc. through the robot interface. >> >> When I teach my Embedded Linux class I would also like my students to >> access the ADCs, PWM, etc in the Linux way. >> >> *How do I configure the Blue to boot up in "Embedded Linux" mode rather >> than "Robot Linux" mode*? >> >> >> If we get the integration right, IMO, we'll boot up so that we can use >> the Linux userspace interfaces and the libroboticscape interfaces. The >> libroboticscape setup should do whatever is needed to disable Linux kernel >> drivers at runtime in order to enable its userspace accesses. >> >> Turn on the ADC kernel drivers and look how libroboticscape fails. Then, >> report that as a bug. >> >> >> >> --Mark >> >> >> On Wednesday, August 2, 2017 at 11:15:40 AM UTC-4, Mark A. Yoder wrote: >>> >>> It sounds like I can either have a Blue that boots as a robot, or boots >>> as an embedded processor, but not both at the same time. >>> I need to see what it would take to remove the ADC from the robots >>> control. >>> >>> --Mark >>> >>> On Tuesday, August 1, 2017 at 4:57:09 PM UTC-4, Hugh Briggs wrote: >>>> >>>> I have lived on BBB + Robotics Cape in James' world for some time. >>>> While I haven't done this with a Blue, I suspect what I did can work there >>>> too. I did do his installation (for a Rev C BBB and a Rev D Robotics >>>> Cape). >>>> With Robert's help I put the Capemgr back in the DTs and added the capemgr >>>> partno boot line for BB-ADC. This seems to be a workable combination of >>>> the two worlds. My premise is that I don't try to do both at once. That >>>> is, I don't run any of the rc_* apps or services while trying to read the >>>> ADCs from /sys/bus/iio. So far it seems to work for me. >>>> Hugh >>>> >>>> On Monday, July 31, 2017 at 11:44:09 AM UTC-7, Mark A. Yoder wrote: >>>> >>>>> Yup, this is the Blue. >>>>> In there short term is there an easy way to turn off the robotics >>>>> stuff and get easy access to the analog in? >>>>> >>>>> In the long term, what will it take to convert James' robot stuff to >>>>> libiio? I might take a shot at it if it isn't too hard. >>>>> >>>>> --Mark >>>>> >>>>> On Friday, July 28, 2017 at 5:56:30 PM UTC-4, RobertCNelson wrote: >>>>>> >>>>>> On Fri, Jul 28, 2017 at 4:40 PM, Mark A. Yoder <mark.a...@gmail.com> >>>>>> wrote: >>>>>> > How do I read AIN on the latest images? I don't know where to find >>>>>> it in >>>>>> > /sys/ >>>>>> >>>>>> Hi Mark, >>>>>> >>>>>> This is with the Blue right? >>>>>> >>>>>> James' got the ADC tied up in mmap for the Robotic's cape library.. >>>>>> >>>>>> >>>>>> https://github.com/StrawsonDesign/Robotics_Cape_Installer/blob/master/libraries/mmap/rc_mmap_gpio_adc.c >>>>>> >>>>>> >>>>>> We need to convert his library to use libiio, then we can just enable >>>>>> the ADC's as an iio device and share usage with the library.. >>>>>> >>>>>> https://analogdevicesinc.github.io/libiio/ >>>>>> >>>>>> Regards, >>>>>> >>>>>> -- >>>>>> Robert Nelson >>>>>> https://rcn-ee.com/ >>>>>> >>>>> -- >> 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 beagleboard...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/4499e97d-fa44-42a1-a033-fe75ce95c4e9%40googlegroups.com >> >> <https://groups.google.com/d/msgid/beagleboard/4499e97d-fa44-42a1-a033-fe75ce95c4e9%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> 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 beagleboard...@googlegroups.com <javascript:>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/df730860-d5e5-4aad-8968-20a5e4188b50%40googlegroups.com > > <https://groups.google.com/d/msgid/beagleboard/df730860-d5e5-4aad-8968-20a5e4188b50%40googlegroups.com?utm_medium=email&utm_source=footer> > . > 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. 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