Author Archives: djonexx

Matematica si Informatica UBB 1993-1997 la 20 de ani

 

Pe 21 iulie 2017 organizam intalnirea de 20 de ani a absolventilor facultatilor de Matematica si Informatica, promotia 1997.

Program:

  • 10:00 in sala 6/II a cladirii centrale, va avea loc cursul festiv comun pentru cele doua sectii, Matematica si Informatica.
  • 15:00, continuam discutiile in cadru non-formal, la restaurantul Ramada Cluj.

Va asteptam cu drag sa ne revedem! Pana atunci puteti lua legatura cu noi pentru detalii la ionut.nechita la gmail.com sau vero_nechita pe yahoo.com sau la adresele de social media de mai jos.

Va rugam confirmati participarea pana la 31 mai, prin achitarea costului participarii de 290 RON pe absolvent si 250 RON pentru the significant others.

Linkuri utile:
Grupul colegilor: https://web.facebook.com/groups/1044087872354179/
Eveniment: https://web.facebook.com/events/714043668761693/
Facebook: djonexx, vero
Linked-in: ionutnechita , veronechita

Raspberry Pi and Huawei/Vodafone k3772 3G modem

After about a day of tinkering with sakis3g and other tools, here’s how to connect the Raspbery Pi to Vodafone RO in a few easy steps, using a Huawei / Vodafone K3772 3G modem:

1. Install usb_modeswitch:

sudo apt-get install usb_modeswitch

Modeswitch is needed because the K3772 modem also has a storage mode. It needs to be switched to the modem mode.

2. Create the usb_modeswitch configuration files:

sudo nano /etc/usb_modeswitch.conf

Add the following at the end:


DefaultVendor = 0x12d1
DefaultProduct = 0x1526
MessageEndPoint = "0x01"
MessageContent = "5553424300000000000000000000001106000000000000000000000000000$

then create this file (where 12d1:1526 are the vendor:product codes as reported by lsusb)

sudo nano /etc/usb_modeswitch.d/12d1:1526


DefaultVendor= 0x12d1
DefaultProduct=0x1526

TargetVendor= 0x12d1
TargetProduct= 0x14cf

MessageContent="55534243123456780000000000000011062000000100000000000000000000"

3. Install pppd if not already installed:

sudo apt-get install ppp

4. Configure pppd:

http://deadloop.blogspot.ro/2010/07/linux-huawei-3g-modem-ppp-vodafone.html

Create the files as per the above blog post:
sudo /etc/ppp/peers/vodafone

name vodafone
460800
noipv6
lock
crtscts
local
noccp
novj
nobsdcomp
nopcomp
noaccomp
nodeflate
nomagic
nomp
nopredictor1
defaultroute
lcp-echo-failure 0
lcp-echo-interval 0
noauth
debug
nodetach
user internet.vodafone.ro
password vodafone
connect “/usr/sbin/chat -V -v -f /etc/ppp/chatscripts/vodafone2”
noipdefault
ipcp-no-addresses
maxfail 40
persist
ipcp-accept-local
ipcp-accept-remote
noipx
usepeerdns
defaultroute
replacedefaultroute

As addition from the referred post, add the last 2 lines, and remove the novjcomp which is not supported on Pi.

Then, create the vodafone2 chat script:

sudo mkdir /etc/ppp/chatscripts
sudo nano /etc/ppp/chatscripts/vodafone2


'ABORT' 'BUSY'
'ABORT' 'ERROR'
'ABORT' 'NO CARRIER'
REPORT CONNECT
'TIMEOUT' '60'
'' 'ATH'
'OK' 'ATZ'
'OK' 'ATQ0 V1 E1 &D2 &C1'
'OK' "AT&F"
'OK' "ATE1"
'OK' 'AT+CGDCONT=1,"IP","internet.vodafone.ro"'
TIMEOUT 120
'OK' "ATD*99***1#"
'CONNECT' '\c'

Then, simply run:
sudo pppd /dev/ttyUSB0 call vodafone

If you want to make the connection start when the PI boots up, use a rc.d script:
sudo nano /etc/init.d/vodafone with this content:


#***************************************************
#! /bin/sh
# /etc/init.d/vodafone

### BEGIN INIT INFO
# Provides: noip
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Simple script to start a program at boot
# Description: A simple script from www.stuffaboutcode.com which will start / stop a program a boot / shutdown.
### END INIT INFO

case "$1" in
start)
sleep 10
echo "connecting via ppp"
# run application you want to start
sudo pppd /dev/ttyUSB0 call vodafone &
;;
stop)
echo "disconnecting via ppp"
# kill application you want to stop
sudo pppd /dev/ttyUSB0 disconnect vodafone &
;;
*)
echo "Usage: /etc/init.d/vodafone {start|stop}"
exit 1
;;
esac

exit 0
#*********************************************************

then also run

sudo chmod 755 /etc/init.d/vodafone
sudo update-rc.d vodafone defaults

The connection will be automatically back on when the Pi reboots.