Shell Programming and Scripting

ABORT    'NO CARRIER'
ABORT    ERROR
''       AT+CREG?
OK       'AT!PADSETUP=1,2,82.91.28.127,0,9940,0,1'
OK       'AT+CGDCONT=1,"IP","web.omnitel.it"'
OK       'AT!PADCONN=1'
CONNECT  '\c'

modem=/dev/ttyUSB3
file=/home/giuseppe/Scrivania/imsi.txt
chat_script=/home/giuseppe/Scrivania/omnitel.chat

exec 3<&1 >"$modem" <"$modem"
stty 115200 clocal ...etc...
if chat -v -s -f "${chat_script}"; then
    echo "error setup modem" >&2
    exit 1
fi
cat "$file"
echo "done" >&3

root@ubuntu:~/Desktop/SCRIPTMODEM# sh modem2.sh
stty: /dev/ttyUSB3: unable to perform all requested operations
abort on (NO CARRIER)
abort on (ERROR)
send (AT+CREG?^M)
expect (OK)
^M
+CREG: 0,1^M
^M
OK

send (AT!PADSETUP=1,2,82.91.28.127,0,9940,0,1^M)
expect (OK)
^M
^M
OK

send (AT+CGDCONT=1,"IP","web.omnitel.it"^M)
expect (OK)
^M
^M
OK

send (AT!PADCONN=1^M)
expect (CONNECT)
^M
^M
OK^M
^M
CONNECT

send ()
error setup modem

IF not exist /dev/ttyUSB3 echo "MODEM NOT CONNECTED" and exit
ELSE (exist /dev/ttyUSB3) {
AT+CREG?
if ouput is different from +creg: 0,1 then echo "MODEM NOT REGISTRED" and redo at+creg
AT!PADCONN=1
if output is different from CONNECTED 1,0 then "IMPOSSIBLE OPEN A SOCKET" and redo at!PADCONN=1
}

if ! chat -v -s -f "${chat_script}"; then

send_expect() {
    chat -v -f 'ABORT ERROR' '' "$@" ''
}

die() {
    echo "$@" >&2
    exit 1
}

if ! [ -e "$modem" ]; then
    die 'Modem not connected'
fi

if ! send_expect 'AT+CREG?' '+CREG: 0,1'; then
    die 'Modem not registered'
fi

if ! send_expect 'AT!PADCONN=1' 'CONNECT'; then
    die 'Unable to open socket'
fi

#! bin/sh

modem=/dev/ttyUSB3
file=/home/giuseppe/Desktop/SCRIPTMODEM/imsi.txt
chat_script=/home/giuseppe/Desktop/SCRIPTMODEM/omnitel.chat

exec 3<&1 >"$modem" <"$modem"

stty 115200 clocal
if ! chat -v -s -f "${chat_script}"; then
    echo "error setup modem" >&2
    exit 1
fi

die() {
    echo "$@" >&2
    exit 1
}
send_expect() {
    chat -v -f 'ABORT ERROR' '' "$@" ''
}

if ! [ -e "$modem" ]; then
    die 'Modem not connected'
fi

if ! send_expect 'AT+CREG?' '+CREG: 0,1'; then
    die 'Modem not registered'
fi

if ! send_expect 'AT!PADCONN=1' 'CONNECT'; then
    die 'Unable to open socket'
fi

cat"$file"
echo "done" >&3

#! /bin/bash
exec 2>error

cat /dev/ttyUSB3 /home/giuseppe/Desktop/SCRIPTMODEM/imsi.txt &
sleep 1

# CONTROLLO MODEM CONNESSO
if ! [ -e /dev/ttyUSB3 ]; then
    echo 'Modem non connesso'
    exit 0
fi

if ! chat -V -f 'ABORT ERROR' '' "$@" '' 'AT' 'OK' > /dev/ttyUSB3 < /dev/ttyUSB3; then
    echo "$@" 'ERRORE AT 1'
fi

sleep 2
killall cat
exit 0

uname -a