Datasheet

ZEUS Embedded Linux Development Kit Quickstart AEL Embedded Linux

• /etc/ppp/chat/gprs

This is usually left unchanged, as the information provided in this file is already

programmed into the SIM card.

• /etc/ppp/pap-secrets

Specify the user name and password for your GPRS service provider in the

following format:

web * password

where the user name and the asterisk, and the asterisk and the password, are

separated by any number of spaces or tabs.

Initiating a connection

Follow these steps:

1 Turn on the wireless module by entering the following command:

# zeus-modem-on.sh

2 Start the PPP connection using the pon command:

# pon gprs (alternatively use: pppd call gprs)

3 Run ifconfig; if you can see ‘ppp0’ in the output of ifconfig then PPP is active.

Note that it can take a few seconds for PPP to be enabled, so if you cannot see

ppp0, run ifconfig a few seconds later; you should then find that the PPP

connection has started.

4 Confirm that the ZEUS is able to connect to the Internet over GPRS. The easiest

way to do this is to ping a known IP address, for example Eurotech’s web site IP

address:

# ping 194.200.159.163

Following the above command, you should see a string of messages similar to this:

84 bytes from 194.200.159.163: icmp_seq=0 ttl=110 time=992.2 ms

Observe the time value, which is usually much greater than corresponding

broadband time values because GPRS is a slower connection.