>
>
> The PRU encoder requires use of the direct PRU input pins as detailed in 
> the man page link provided earlier. 
>
> The pinmux is required to be set to the proper mode before running the 
> hal_pru_generic driver (via device-tree overlay or something like the 
> config-pin utility). 
>
>
>
ok
i've read the page from top to down now... ;-)
i must study the beaglebone pinout and the pin config register...

is there an error in the page?
stepper pin(output) and encoder pin(input) are input?

Examples:

0811 = GPIO on P8, pin 11
 811 = GPIO on P8, pin 11 (identical to above)
1811 = PRU direct output on P8, pin 11
2927 = PRU direct input on P9, pin 27


encoder section:
A-pin (u32 input)

PRU direct input pin to use for the A signal


stepper section:
step_pin (u32 input)

I/O pin to use for the step output


thank's 

Roberto

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