On Tue, Jul 18, 2017 at 1:54 PM, maxmike <[email protected]> wrote:
> I have cape-universal set up:
>
>  0: PF----  -1
>  1: PF----  -1
>  2: PF----  -1
>  3: PF----  -1
>  4: P-O-L-   0 Override Board Name,00A0,Override Manuf,univ-emmc
>
> root@beaglebone:~# config-pin -q p8.13
> P8_13 Mode: pwm
>
> So I configure pwm for pwmchip4 :
>
> sh -c "echo 0 > /sys/class/pwm/pwmchip4/export"
>
> and now I have duty_cycle, period, etc in:
> /sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip4/pwm0
>
> When the machine reboots all that is gone. Why?

Setup a script to setup your settings on bootup:

https://github.com/adafruit/adafruit-beaglebone-io-python/blob/master/doc/run_config-pin_during_startup.md

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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