Anyway, this is the project I speak of, and it should be preinstalled on beagelboard.org debian images. https://github.com/cdsteinkuehler/beaglebone-universal-io
The readme.md is about all I know on the subject, but in a couple cases I've seen Robert use it wildly different from how I've seen it used previously. e.g. to load device tree overlays, and configure pins in a way I had not seen before. On Sun, Jul 26, 2015 at 3:00 PM, William Hermans <[email protected]> wrote: > Brian, for what purpose ? The reason why I ask is that the config-pin > utility should be able to achieve the same end goal, and is a userland tool. > > Unfortunately, I'm not very familiar with the tool, but at least two > people on the groups here should be able to guide you in this respect. > > Robert, is there a user manual for Universal IO ? > > On Sun, Jul 26, 2015 at 12:14 PM, Brian Cooke <[email protected]> wrote: > >> On a BeagleBone Black running Debian 8.1 / Linux 4.1.2-ti-r4 >> <https://rcn-ee.com/rootfs/bb.org/testing/2015-07-19/lxqt-4gb/>, I'd >> like to be able to enable PWM on P8.13 and P8.19 using two different device >> tree overlays rather that a single overlay. >> >> The two overlays currently being used are show below. If the first >> overlay for P8.13 is used, it will work correctly. If the second overlay >> for P8.19 is used, it will also work correctly. However, if both overlays >> are used at the same time, only the first one activated will work >> correctly. The second one will fail to function. I'd imagine the problem is >> related to fragment@2 in the overlays, but I can't figure out what needs >> to be done to make it function correctly. Any help in figuring out how to >> solve the issue would be greatly appreciated. >> >> *Overlay for PWM on P8.13* >> >> /dts-v1/; >> /plugin/; >> >> /{ >> compatible = "ti,beaglebone", "ti,beaglebone-black"; >> part-number = "bot_pwm_p8_13"; >> version = "00A0"; >> >> exclusive-use = >> "P8.13", >> "ehrpwm2B"; >> >> fragment@0 { >> target = <&am33xx_pinmux>; >> __overlay__ { >> bot_pwm_p8_13_pins: pinmux_bot_pwm_p8_13_pins { >> pinctrl-single,pins = < >> 0x024 0x4 >> >; >> }; >> }; >> }; >> >> fragment@1 { >> target = <&epwmss2>; >> __overlay__ { >> status = "okay"; >> }; >> }; >> >> fragment@2 { >> target = <&ehrpwm2>; >> __overlay__ { >> pinctrl-names = "default"; >> pinctrl-0 = <&bot_pwm_p8_13_pins>; >> status = "okay"; >> }; >> }; >> }; >> >> *Overlay for PWM onP8.19* >> >> /dts-v1/; >> /plugin/; >> >> /{ >> compatible = "ti,beaglebone", "ti,beaglebone-black"; >> part-number = "bot_pwm_p8_19"; >> version = "00A0"; >> >> exclusive-use = >> "P8.19", >> "ehrpwm2A"; >> >> fragment@0 { >> target = <&am33xx_pinmux>; >> __overlay__ { >> bot_pwm_p8_19_pins: pinmux_bot_pwm_p8_19_pins { >> pinctrl-single,pins = < >> 0x020 0x4 >> >; >> }; >> }; >> }; >> >> fragment@1 { >> target = <&epwmss2>; >> __overlay__ { >> status = "okay"; >> }; >> }; >> >> fragment@2 { >> target = <&ehrpwm2>; >> __overlay__ { >> pinctrl-names = "default"; >> pinctrl-0 = <&bot_pwm_p8_19_pins>; >> status = "okay"; >> }; >> }; >> }; >> >> >> -- >> 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. >> > > -- 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.
