12.2 PROJECT 12.2 – Moving Ball Animation

12.2.1 Project Description

This project shows how the simple animation of a moving ball can be created on the GLCD. A filled circle is drawn to represent the ball. This figure is then moved across the GLCD screen from left-to-right and then right-to-left inside a rectangular shape. The text ‘Moving Ball’ is written on the shape. The format of the display and co-ordinates of the shapes on the screen are shown in Figure 12.10.

Figure 12.10 Ball animation

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12.2.2 Block Diagram

The block diagram of the project is as shown in Figure 12.5.

12.2.3 Circuit Diagram

The circuit diagram of the project is as shown in Figure 12.6.

12.2.4 Project PDL

The PDL of this project is given in Figure 12.11.

Figure 12.11 PDL of the project

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12.2.5 Project Program

The program is named GLCD2.C and the program listing of the project is given in Figure 12.12. At the beginning of the program, the connection between the microcontroller and the GLCD are defined using sbit statements. The GLCD is connected to ports B and D of the microcontroller and thus both of these ports are configured as digital I/O ports using ANSEL statements. The GLCD library is then initialised using the Glcd_Init function. This function must be called before calling to any other GLCD function. ...

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