lte-connect.sh

#!/bin/bash
timstim=$(date -u)
interface=wwan0
usbdevice=/etc/usb_modeswitch.d/12d1\:1505
qmidevice=/dev/cdc-wdm0
string=$(sudo qmi-network $qmidevice status | grep disconnected)
if [[ $string == *"disconnected"* ]]; then
    echo "{\"TIMSTIM\" : \""$timstim"\", \"LTE\" : [{\"NETWORK_STATE\":\"DISCONNECTED\"}]}"
    sudo qmi-network $qmidevice stop
    sudo qmi-network $qmidevice start
    sudo dhclient -r $qmidevice
    sudo dhclient $qmidevice
    sleep 10
    string=$(sudo qmi-network $qmidevice status | grep connected)
    if [[ $string == *"connected"* ]]; then
        echo "{\"TIMSTIM\" : \""$timstim"\", \"LTE\" : [{\"NETWORK_STATE\":\"CONNECTED\"}]}"
    else
        echo "{\"TIMSTIM\" : \""$timstim"\", \"LTE\" : [{\"NETWORK_STATE\":\"UNKNOWN_ISSUE_RECONNECTING\"}]}"
        sudo usb_modeswitch -c $usbdevice
    fi
else
    string=$(sudo qmi-network $qmidevice status | grep connected)
    if [[ $string == *"connected"* ]]; then
        echo "{\"TIMSTIM\" : \""$timstim"\", \"LTE\" : [{\"NETWORK_STATE\":\"CONNECTED\"}]}"
    else
        echo "{\"TIMSTIM\" : \""$timstim"\", \"LTE\" : [{\"NETWORK_STATE\":\"UNKNOWN_ISSUE_RECONNECTING\"}]}"
        sudo usb_modeswitch -c $usbdevice
    fi
fi