WiSnap User Manual 4.41 05282015-ML
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NOTE:
FTP IP Address may vary. Check with SerialIO for most up-to-date credentials.
The previous firmware will become the backup image. Here is an example of what you should see after a successful update:
FL#
SIZ
FLAGS
11
18
3
WiSnap_GSX-2.20
29
1
10
config
30
18
3
WiSnap_GSX-2.21
208 Free, Boot=30, Backup=11
Note the module must be rebooted or power cycled to use the new firmware. To boot a different firmware use the following
command:
boot image
<num>
-
sets the current boot image
<num>
. For example, to boot the previous image from above use
<2.20>
boot image 11
Set Boot Image 11, =OK
To upload your own firmware or config file to the module, change the stored FTP settings: See section 5.5 for more details on
the FTP commands.
To upload your file, use following command:
ftp get
<string>
-
retrieves remote file with name
<string>.
15 Ad Hoc Networking Mode
15.1 Infrastructure and Ad Hoc Comparison
There are two types of networks; infrastructure and ad hoc. Infrastructure networks, in which an access point links all Wi-Fi
devices, are the most common. The access point keeps track of devices on the local network and directs IP packets. In many
cases, the access point is also a router and forwards packets from the local network to the other networks and the internet. It
is also very common for the access point to run a DHCP server, which tracks and assigns IP addresses.
Ad hoc networks are point-to-point networks in that each Wi-Fi device is linked directly to every other Wi-Fi device on the ad
hoc network. There is no access point. All Wi-Fi devices on the ad hoc network participate in keeping the network alive and
each keeps track of the other active devices on the network by sending and receiving beacon and probe packets. In most
cases, IP addresses are assigned through automatic IP, although one of the Wi-Fi devices can be configured as a DHCP server.
NOTE:
The units support ad hoc networking, however, ad hoc mode has been replaced with soft AP mode. Ad hoc
mode and soft AP mode are mutually exclusive and cannot operate at the same time. The support for these modes
resides in separate firmware images loaded on the module. By default, the units are shipped with the ad hoc mode
image to maintain backwards compatibility with existing applications.
15.2 Configuring Ad Hoc Mode
You can configure the module to setup an ad hoc network. This mode is useful for point-to-point communications. When in ad
hoc mode the device appears like an access point with which other Wi-Fi devices can associate.
NOTE:
The module currently only supports the OPEN mode for creating ad hoc networks.
You can enable ad hoc mode via hardware or software commands.
15.3 Enable Ad Hoc Mode in Software
