if you are using kernel 3.14.x and above, you won't have capemgr. As said by RbertCNelson you could just install 3.8 from the debian repo:
sudo apt-get update sudo apt-get install linux-3.8.13-bone68 sudo reboot if you still face errors in loading pwm device trees due to missing dtbo files, use the following steps sudo apt-get install device-tree-compiler If you face errors with -@ option while compiling use following steps wget -c https://raw.github.com/RobertCNelson/tools/master/pkgs/dtc.sh chmod +x dtc.sh ./dtc.sh get the missing dts files from https://github.com/beagleboard/devicetree-source now at https://github.com/venkaty89/devicetree-source/tree/master/arch/arm/boot/dts or https://github.com/beagleboard/devicetree-source/tree/master/arch/arm/boot/dts compile required files using build file #!/bin/bash echo "Compiling the overlay from .dts to .dtbo" dtc -O dtb -o am33xx_pwm-00A0.dtbo -b 0 -@ am33xx_pwm-00A0.dts dtc -O dtb -o bone_eqep0-00A0.dtbo -b 0 -@ bone_eqep0-00A0.dts dtc -O dtb -o bone_eqep1-00A0.dtbo -b 0 -@ bone_eqep1-00A0.dts dtc -O dtb -o bone_eqep2-00A0.dtbo -b 0 -@ bone_eqep2-00A0.dts dtc -O dtb -o bone_pwm_P8_13-00A0.dtbo -b 0 -@ bone_pwm_P8_13-00A0.dts dtc -O dtb -o bone_pwm_P8_19-00A0.dtbo -b 0 -@ bone_pwm_P8_19-00A0.dts dtc -O dtb -o bone_pwm_P8_34-00A0.dtbo -b 0 -@ bone_pwm_P8_34-00A0.dts dtc -O dtb -o bone_pwm_P8_36-00A0.dtbo -b 0 -@ bone_pwm_P8_36-00A0.dts dtc -O dtb -o bone_pwm_P8_45-00A0.dtbo -b 0 -@ bone_pwm_P8_45-00A0.dts dtc -O dtb -o bone_pwm_P8_46-00A0.dtbo -b 0 -@ bone_pwm_P8_46-00A0.dts dtc -O dtb -o bone_pwm_P9_14-00A0.dtbo -b 0 -@ bone_pwm_P9_14-00A0.dts dtc -O dtb -o bone_pwm_P9_16-00A0.dtbo -b 0 -@ bone_pwm_P9_16-00A0.dts dtc -O dtb -o bone_pwm_P9_21-00A0.dtbo -b 0 -@ bone_pwm_P9_21-00A0.dts dtc -O dtb -o bone_pwm_P9_22-00A0.dtbo -b 0 -@ bone_pwm_P9_22-00A0.dts dtc -O dtb -o bone_pwm_P9_28-00A0.dtbo -b 0 -@ bone_pwm_P9_28-00A0.dts dtc -O dtb -o bone_pwm_P9_29-00A0.dtbo -b 0 -@ bone_pwm_P9_29-00A0.dts dtc -O dtb -o bone_pwm_P9_31-00A0.dtbo -b 0 -@ bone_pwm_P9_31-00A0.dts dtc -O dtb -o bone_pwm_P9_42-00A0.dtbo -b 0 -@ bone_pwm_P9_42-00A0.dts If you face errors with -@ option while compiling use following steps wget -c https://raw.github.com/RobertCNelson/tools/master/pkgs/dtc.sh chmod +x dtc.sh ./dtc.sh copy compiled dtbo files to /lib/firmware using copy file #!/bin/bash cp -f *.dtbo /lib/firmware load the required dtbo files using bash file load_dtbo #!/bin/bash echo "loading device trees" export SLOTS=/sys/devices/bone_capemgr.9/slots export PINS=/sys/kernel/debug/pinctrl/44e10800.pinmux/pins modprobe pwm_test echo am33xx_pwm > $SLOTS echo bone_pwm_P8_19 > $SLOTS echo bone_pwm_P9_21 > $SLOTS On Sunday, 7 December 2014 08:14:02 UTC+5:30, Sid Raj wrote: > > > Hi, > > On my BBB running Ubuntu 14 I am using adafruit py libs to for servo > control. But I get the following error. Same with P9_14. Any idea why I am > getting this and what I should do to make it go away? Thanks a lot! > > >>> import Adafruit_BBIO.PWM as PWM > > >>> PWM.start("P8_13", 95.0, 60) > > >>> > > IOError: [Errno 2] No such file or directory: '/slots' > > > Sid > -- 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.
