Datasheet

Jon Waddington

3.3 Menu System

A menu is displayed on the television which shows four items for the user to choose

from. Navigation of the menu is done using the Remote control. The up and down arrows

control which item is selected and pressing the “stand-by” button enters the item. The

current time and date is constantly displayed along the top of the menu. Figure 3.3

shows the hierarchy of the Information System’s menus.

The code below shows the “main” method which displays the main menu. This is similar

to how every menu in the program is displayed.

PRI main

repeat

rc.flush 'flush RC5

text.out($00) 'clear screen

showdate(0, 0) 'show date and time

showtime(35, 0)

text.str(string(13," Information System")) 'display title

text.str(string(13,13,13," . Home Automation",13,13," .

Temperature",13,13," . X10

Setup",13,13," . Settings")) 'display items

code := 0 'flush code

repeat until (code == enter) 'repeat until enter is pressed

case sel 'case statement displays cursor on items

0 : text.str(string($0A,7,$0B,5,"> "))

text.str(string($0A,7,$0B,7,"2."))

text.str(string($0A,7,$0B,9,"3."))

text.str(string($0A,7,$0B,11,"4. "))

1 : text.str(string($0A,7,$0B,5,"1."))

text.str(string($0A,7,$0B,7,"> "))

text.str(string($0A,7,$0B,9,"3."))

text.str(string($0A,7,$0B,11,"4. "))

Main Menu

Home

Automation

Temperature

X10 Settings

Settings

Figure 3.3. Diagram of the Menu Layout