Building iPhone OS Accessories: Use the iPhone Accessories API to Control and Monitor Devices

Chapter 8. Improving the Design

Now that you have a working game that uses your accessory controller, it's time to make some changes. While the game itself could use a lot of work, I will focus on the interface to the game controller and improving performance and security of the system.

Performance Concerns

Let's look at Figure 8-1 to review what goes on when you turn the knob and send a new position to the game.

Figure 8-1. Data movement through the game

The game controller generates a byte of data representing the position of the knob that you want to translate into the position of the paddle. From the processor residing on the game controller, you ...