User`s guide

www.uTasker.com
µ Tasker – AT91SAM7X Tutorial
V1.4
uTaskerV1.4_SAM7X.doc/0.03 19/36 31.07.2009
7.2. LAN configuration
This side is a very critical side since it allows important Ethernet settings to be modified. The
first time the device is started, the default MAC address – defined in the cParameters
structure in application.c - is 0-0-0-0-0-0. It can be changed just once, after which it is
displayed as disabled. This is because it is normally necessary to program a new device with
a unique MAC address which should normally never be changed again. (See the short
discussion about MAC addresses at the bottom is this section for some details about how
they are obtained.)
The IP address, subnet mask and default gateway IP address can be modified as long as the
device is not set to DHCP operation. If they are first modified and then the device is set to
DHCP mode, they represent preferred settings to be requested during the DHCP procedure
or for use as a last resort if no DHCP server is available.
The Ethernet speeds of 10M, 100M or auto-negotiation (full or half-duplex) can be set.
Figure 6. µTasker web server showing the LAN configuration page
Values, which are not disabled, can be modified and accepted by clicking on “Modify /
validate settings” and changed values are indicated by a check box in the configuration table.