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5
Let's make a USB mouse
This sample program will provide USB communications that a USB mouse uses (HID class) by
utilizing the USB function controller in the microcontroller (MB91F662) installed on the starter kit.
When the starter kit board is connected to the PC, the PC will recognize the board as a USB
mouse (HID class). Operating the pushbutton switches and slider switch on the board will
simulate the operation of a mouse.
5.1
Overview of the USB sample program
This sample program simulates a USB mouse (HID device) on the MB91F662. Figure 5.1-1
shows the operation and details of the sample program. When the starter kit board running the
sample program is connected to the PC, the PC recognizes the MB91F662 on the board as a
USB mouse (HID device). After the PC completes the connection and recognition process, the
pushbuttons on the board can be used to move the cursor or perform click operations on the
PC screen. The slider switch on the board can be used to scroll windows on the PC. The
program periodically scans the pushbuttons and slider switch to detect these status changes.
65
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