Atmel AT91SAM7X-EK Betriebsanweisung PDF herunterladen (Seite 10)

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Tasker – AT91SAM7X Tutorial

V1.4

uTaskerV1.4_SAM7X.doc/0.03 10/36 31.07.2009

MAC address. Just start the simulator again and repeat this step.

While the project is waiting for the critical network changes to be validated you will

notice that the LCD doesn’t display anything. As soon as the validation sequence has

been completed also the LCD display demonstration will start running as normal.

12. Now you may be thinking that it is all well and good having a web server running on a

device, sitting somewhere on the Internet but you probably want to use the device for

controlling something - in its simplest form by switching something on or off. Using a

relay this could be something quite powerful which can also have really useful

benefits; imagine browsing to your device and commanding it to open the blinds or

turn on the lawn sprinkler…the list of possibilities is almost endless…

Look at the simulated AT91SAM7X and imagine that you have connected your lawn

sprinkler to the output Port PB22. Presently it is at the state input ‘1’ [signified by ‘^’],

the default state when the software starts since there is a pull-up in the device. Now

click on the link menu page to “Open an I/O window” – it is shown in the following

screen shot. Notice that the port PB22 is being displayed as an input and its digital

value as active (‘1’) in its check box.

Figure 4. µTasker web server showing the I/O control page

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Atmel AT91SAM7X-EK Betriebsanweisung Seite 10