Power on and off a UE Roll via Bluetooth using GATT and SPP

ue-roll.sh

#!env sh

mac=C0:28:8D:00:2A:A8

function ue_on() {
    handle=0x0003
    value=b469218dd9e701
    gatttool -b $mac --char-write-req --handle=$handle --value $value
}

function ue_off() {
    off_req='\x02\x01\xb6'
    sudo rfcomm bind 0 $mac 1
    echo -en $off_req | sudo dd of=/dev/rfcomm0
    sudo rfcomm release 0
}