Computer Science Canada Help with parallelget and traffic lights assignment |
| Author: | rss14 [ Wed Jun 04, 2008 5:02 pm ] |
| Post subject: | Help with parallelget and traffic lights assignment |
I need to make a project about a traffic intersection. So i need to write a code, which turns on pins on a parallel port, so that my LEDs turn on, as they would in real life. The wires are inside a cable, which has 8 wires in total 2 reds are connected to pin 2 (1), 2 opposite reds are connected to pin 3 (2), 2 yellows are connected to pin 4 (4), opposite yellows are connected to pin 5 (8), 2 greens are connected to pin 6 (16), and opposite greens are connected to pin 7 (32) Pin 19 is ground. I have an extra wire, which i haven't attached to the parallel port yet. loop parallelput (33) % Red, Red, Green, Green delay (5000) parallelput (9) % Red, Red, Yellow, Yellow delay (2000) parallelput (18) % Green, Green, Red, Red delay (5000) parallelput (6) % Green, Green, Red, Red delay (2000) end loop I need to modify this code, so I can incorporate a button, and another LED, for a crossing light. I am thinking of connecting the extra wire to pin 11, so I can use parallelget to know when the button has been pressed. Then i will keep that in a variable, until the light can go on. . . So basically, i need to know how to write parallelget . . . Any other help will be appreciated. Thanks. |
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