# Pastebin fDLL0JuA
add_usb_serial_device(){
    DEVICE_ID=$1
    CHARDEV_ID=$2
    SERIAL_NUM=$3
    echo "device_add usb-serial,chardev=$CHARDEV_ID,id=$DEVICE_ID,serial=$SERIAL_NUM" | nc -q 0 127.0.0.1 "$MON_PORT"
    echo "device added"
}