User Manual

Chapter 3. Using the System
Usage:
serialbluetooth [options]
To see the command options, enter the serialbluetooth --help command.
Basically, serialbluetooth takes commands from a serial port and forwards them to the iWRAP
server. All the commands available through iWRAP are also available through serial port.
There are two exceptions:
1. After making an outgoing RFCOMM data call, all input from the serial port is forwarded
to the data socket, not to the control socket. To close the data socket, you have to write
+++ with a 200ms pause before each character. It is not possible to have two concurrent
RFCOMM calls.
2. All incoming RFCOMM calls are answered automatically. Again, to close the data socket,
write +++ as with the outgoing call.
3.3. Compact Flash Cards
Access Server functionality can be extended by using GSM/GPRS, Wi-Fi and GPS Compact
Flash cards. The supported Compact Flash cards are listed in Appendix D.
3.3.1. Compact Flash GPRS Cards
The operating system automatically identifies the Compact Flash GPRS card when it is inserted.
Access Server can use the GPRS card to connect to the GPRS network, or to act as an SMS
gateway to send and receive SMS messages.
You can enable the GPRS mode and configure its settings, such as the SIM card’s PIN code, by
using the setup application or its WWW interface. For more information, see Section 2.4 and
documentation for Setup −→ Network settings −→ Enable GPRS interface in Appendix B.
GPRS, when enabled, is by default only turned on when needed. If Access Server can access the
Internet (or any desired address) by using the default interface nap, it does not activate and use
the GPRS (ppp0) interface.
The simplest way to test the GPRS interface is to configure the default interface nap to use
dynamic network configuration (the default) and enable GPRS through the setup application,
then to disconnect the Ethernet cable, reboot the device with the management console enabled.
After the boot, ping an IP address in the Internet, such as 194.100.31.45 (bluegiga.com).
The first five or so packets are lost, but after that the GPRS connection should be up. To enable
the interface automatically, just enter ping -c 20 ip-in-internet to /etc/rc.d/rc.local.
Note: If you also want to use the Ethernet connection, you must remove it from the default inter-
face (nap) bridge and configure its network settings individually using the setup application while
keeping the default interface network settings in their default (dynamic) state.
Using WRAP SMS Gateway Server is documented in
Section 3.5.3.
If needed for some special use, the Compact Flash GPRS card can also be accessed directly from
/dev/ttyS0, a device file which exists if the GPRS card is successfully initialized.
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