Read GPIO problem

[shworker]

I use Pine64 A64-DB-Rev B board and Debian Jessie.

I need read some GPIO pins (69 and 233 on RPI connector) using sysfs. I use pullup resistors (10k) to 3.3v. Measure voltage on these pins. I get 3 v.
Set direction to 'in'.
But, reading /sys/class/gpio/gpioXX/value i always got 0 !

If switch direction to out, then back to in, reading get 1 ! 

Simple script to test:

Code:

#!/bin/sh SYSFSDIR=/sys/class/gpio DOOR_PIN=69 UPLVLPIN=233 setup(){    if [ ! -d $SYSFSDIR/gpio$1 ] ; then        echo $1 > $SYSFSDIR/export    fi    # If comment out these 2 lines - always read 0 !    echo 'out' > $SYSFSDIR/gpio$1/direction    echo 'in' > $SYSFSDIR/gpio$1/direction } gpio_read(){    cat $SYSFSDIR/gpio$1/value } setup $DOOR_PIN setup $UPLVLPIN case "$1" in    door)        gpio_read $DOOR_PIN        ;;    uplevel)        gpio_read $UPLVLPIN        ;;    *)        usage        ;; esac

PS: Sorry for my bad english, my native language is Russian