On Oct 18, 2017 8:08 PM, "Andy Bushnell" <[email protected]> wrote:

I'm trying to use the Peripheral commands from:

https://github.com/beagleboard/pocketbeagle/wiki/Peripherals

I'm trying the PWM commands.  When I get to

echo 20000 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/pwm0/period


I get permission denied.  I tried adding sudo before echo and no joy.

Suggestions?


Right now do

https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Privileged_echo

We do have a better solution, which utilizes udev, but I haven't back
ported that to v4.9/v4.4 yet. (It requires fixes for bonescript still.. I
fixed adafruit library last week)

Regards,

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