GPRS Data

This page is beign temporarily revised with the newest updates.

How to Enable GPRS Data on IPLOG-GAMA G2/G3

IPLOG-GAMA G2

The property GPRS data is disabled from the default configuration. However, the system has everything what you need to successfully establish a PPP connection. This allows the IPLOG-GAMA G2 unit access to the mobile Internet.

1. Edit the Configuration File

Open the file /etc/init.d/S41gprs by default text editor Vi.

root@iplog:~# vi /etc/init.d/S41gprs

The file contains two commented lines 45 and 52 (#pon and #poff), delete the comment charakter # before.

The resulting file should look like this:

#!/bin/sh
#
# Starts the GPRS
#

NAME=gprs
CONN=vodafone
PRODUCT=`metel-eeprom -c read product`
PCB_ASS=`metel-eeprom -c read assembly-pcb`

PRODUCT=${PRODUCT##* }
PCB_ASS=${PCB_ASS##* }

join()
{
 # $1 - file
 # $2 - wait for $2 seconds

   for i in $(seq 1 $2)
   do
        if [ -e $1 ]
        then
                # Telit found
                return 0
        else
                # Wait: 1s
                sleep 1
        fi
   done

   return 1
}

start()
{
        printf "Starting $NAME: "
        # For IPLOG_GAMA_G2_10052018 and newer wait for supply power ON and Teli
        if [ $PRODUCT == 0x494702 ]; then
          if [ ${PCB_ASS%%_*} != 27042017 ] && [ ${PCB_ASS%%_*} != 18092017 ]; t
            join "/dev/ttyACM0" 15
            # wait 5s for catch GSM signal
            sleep 5
          fi
        fi
        pon gprs
        [ $? = 0 ] && echo "OK" || echo "FAIL"
}

stop()
{
        printf "Stopping $NAME: "
        poff
        [ $? = 0 ] && echo "OK" || echo "FAIL"
}

case "$1" in
        start)
                start
                ;;
        stop)
                stop
                ;;
        restart|reload)
                stop
                start
                ;;
        *)
                echo "Usage: $0 {start|stop|restart}"
                exit 1
esac

exit $?

#end-of-file

Tip:
Text editing - Hit the i (insert mode).
Save and Exit - Write charakter :wq (write and quit). The cursor moves to bottom of screen whenever a colon (:) is typed. This type of command is completed by hitting the Enter key.

3. Device Reboot

It is strongly recommended to do a reboot.

root@buildroot:~# reboot

4. Check the Connection

After system reboot check if GPRS connection works.

root@buildroot:~# ifconfig ppp0

If the connection was established the output will looks like:

ppp0      Link encap:Point-to-Point Protocol
          inet addr:100.91.38.191  P-t-P:100.91.38.191  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:5 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3
          RX bytes:68 (68.0 B)  TX bytes:120 (120.0 B)

If connection does not work:

ifconfig: ppp0: error fetching interface information: Device not found

Error posibilities

SIM card PIN confifuration.

GSM LED on the front panel flash, shines = it is not registered to GSM network.

Antenna is connected and 2G/3G signal is available on site.

The APN configuration corresponds to the local operator.

SIM card contains a credit and mobile data are enable.