DESIGN CYCLE
■ SCREENSHOT 1. This test is kinda like bucking
physics. When gravity doesn't work the way you
know it should, you're probably not on Earth.
■ SCREENSHOT 2.
This get ip
command was
issued from that
Telnet session we
invoked in
Screenshot 1. We
now have total
control.
for both TCP and UDP operation.
Linksys router:
INITIAL RN-XV SETUP
I moved the RN-XV back to the
carrier so I could configure it using a
serial-based Tera Term session. Once
we’ve given the RN-XV enough
configuration information to go
wireless, I’ll move it back to the
“Rabbit” hole.
Let’s take care of the IP setup
first. After starting the Tera Term
serial session, entering transfers
us from data mode to
command mode. The
So, let’s turn DHCP off:
set ip address 192.168.0.88
AOK
<2.36> set ip gateway
192.168.0.1
AOK
The < 2. 36> prompt reflects the
version of the RN-XV’s firmware. The
RN-XV’s local port number is next on
our list of configuration parameters:
I think you’ve got the idea. So,
we’ll force the RN-XV to use DNS by
configuring the TCPMODE parameter.
I’ll go ahead and set up some of the
other IP configuration parameters,
and then we’ll take a look at what
we’ve done in the IP area so far:
<2.36> set ip
localport 8888
AOK
<2.36> set ip
tcp-mode 0x4
AOK
<2.36> get ip
IF=UP
DHCP=OFF
IP=192.168.0.88:8888
NM=255.255.255.0
GW=192.168.0.1
■ SCHEMATIC 3.
Definition of an LMX-
ISM-242-LR: One 100
mW radio, one 12 MIPs
microcontroller, and a
regulated power
supply all on a
single piece of
copperclad
fiberglass.
CMD
set ip dhcp 0
AOK
Now, we can go
ahead and enter our
desired IP address and
provide the RN-XV with
our gateway
information. In this
case, the gateway is the
February 2013 17