On Wed, Dec 20, 2017 at 3:33 PM, ags <alfred.g.schm...@gmail.com> wrote: > I've been building a prototype using the uio_pruss driver and one "test" pin > (P9_27) which was easily allocated using config-pin. > I'm now trying to complete the prototype and need to enable a total of 8 PRU > pins (pr1_pru0_pru_r30_[0-7]). I am unable to enable most of these pins: > > debian@BBB:~$ uname -r > 4.4.30-ti-r64 > > debian@BBB:~$ config-pin -a p9_29 pruout > > P9_29 pinmux file not found! > > P9_29 overlay not found > > Loading cape-universala overlay > > bash: line 0: echo: write error: File exists > > Error loading device tree overlay file: cape-universala > > > > After searching I found this: > https://github.com/cdsteinkuehler/beaglebone-universal-io/issues/43 > > recommending updating overlays ("things have changed")... > > So I went here: https://github.com/beagleboard/bb.org-overlays > > and did this: > > > debian@BBB:~$ sudo apt update ; sudo apt install bb-cape-overlays > > > debian@BBB:~$ apt show bb-cape-overlays > > Package: bb-cape-overlays > > Version: 4.4.20171215.0-0rcnee1~jessie+20171215 > > Maintainer: Robert Nelson <robertcnel...@gmail.com> > > Installed-Size: 2,003 kB > > Depends: device-tree-compiler > > Priority: extra > > Section: misc > > Download-Size: 59.5 kB > > APT-Manual-Installed: yes > > APT-Sources: http://repos.rcn-ee.com/debian/ jessie/main armhf Packages > > Description: Device tree overlays for Beaglebone. > > Device tree overlays for Beaglebone /lib/firmware/ > > > But now have a new problem: > > > debian@BBB:~$ config-pin p9_29 pruout > > bash: /sys/devices/platform/ocp/ocp*P9_29_pinmux/state: No such file or > directory > > Cannot write pinmux file: /sys/devices/platform/ocp/ocp*P9_29_pinmux/state > > debian@BBBr0C0-1:~/node$ config-pin -a p9_29 pruout > > bash: /sys/devices/platform/ocp/ocp*P9_29_pinmux/state: No such file or > directory > > Cannot write pinmux file: /sys/devices/platform/ocp/ocp*P9_29_pinmux/state > > > I did read about moving away from kernel overlays to uBoot overlays here: > https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays > > but am no closer to a solution. I am now under time pressure and prefer to > make minimal changes to my system. Can anyone help with suggestions to work > around this?
The package "bb-cape-overlays" needs to stay in sync with the kernel. (Since config-pin does not auto-generate the pin options.) Your going to need to update the kernel: 4.4.30-ti-r64 -> 4.4.91-ti-r140 Switch to u-boot overlays, with these options in /boot/uEnv.txt enable_uboot_overlays=1 disable_uboot_overlay_audio=1 uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo enable_uboot_cape_universal=1 if you run into any issues with settting up ^ Just run: sudo /opt/scripts/tools/version.sh then we can debug it.. 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+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYjM%2Bn2T_6kpVKRdjNX-ykWzwxzN%3DMZ36gGqzSSGH1-C9w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
