При выполнении команды wb-gsm on получаем такой выхлоп -
root@wirenboard:~# wb-gsm on
stty: /dev/ttyAPP0: Inappropriate ioctl for device
/usr/lib/wb-gsm-common.sh: line 37: echo: write error: Device or resource busy
cat: /sys/class/gpio/gpio17/direction: No such file or directory
switching on GSM modem using POWER FET
/usr/lib/wb-gsm-common.sh: line 230: /sys/class/gpio/gpio17/value: No such file or directory
toggle GSM modem state using PWRKEY
/usr/lib/wb-gsm-common.sh: line 27: /sys/class/gpio/gpio17/value: No such file or directory
Waiting for modem to start
stty: /dev/ttyAPP0: Inappropriate ioctl for device