The first thing I am going to do is get the program reading from the input ports and displaying on the LCD. This will convince me that I can drive the LCD and read the ports fast enough. I am also going to use the LCD library we created in Practical 5. What I want is a program which will read PORTA bit 0 and display either "up" or "down" depending on the state of the pin. The "up" or "down" message must be displayed in the top left hand corner of the display. On the right hand side you can see a more detailed set of requirements along with some hints.
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Requirement |
Hint |
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The program should display " |
Look at Exercise 2.1 to find out how to configure PORTA for reading and read the state of a bit. |
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The program must perform the update repeatedly. |
Sounds like a job for an infinite while loop. |
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The program must draw the " |
You will need to use the lcd functions. You must therefore create a project, include the appropriate file and set up and use the LCD panel. Look at program Exercise 5.1 for details how to call the LCD functions. |