November 2012
Intermediate to advanced
496 pages
12h 2m
English
Content preview from Using LEDs, LCDs and GLCDs in Microcontroller Projects
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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
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
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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