Fujitsu 32-Bit Microcontroller MB9B500 Series Manual de usuario descargar pdf (Pagina 18)

4.5 USB Function

 Hardware Setting

¾ Check if 1,2 of J-USB- and J-USB+ short

¾ Check J701 (Short: 5V, Open: 3.3V)

¾ Connect with PC via USB cable

 Flowchart

The following flowchart illuminates the procedure to implement a USB mouse, it is not a

certain flow of a function, but provides a clue to study and understand the sample code.

Start

Button, USB core,

HID initialization

Check ButtonInit(),

HIDInit()

Check Ext INT7

occurred?

Initial Endpoint 0

Check

EXTI8_15_IRQHandler()

Get Device, HID

description

Enable Endpoint 5

interrupt transfer

Bus reset

Configure

Endpoint 0-5

Device has been

connected with

Host

Check

USB_2_IRQHandler()

Use interrupt transfer to

communicate with host

Check

HidMouseSendReport()

Check

USB_1_IRQHandler()

Figure 4-8: USB Function Sample Code Flowchart

 Usage

1) Make the hardware setting.

2) Watch the mouse moving when pressing “Up”, “Down”, “Left”, “Right” buttons.

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Fujitsu 32-Bit Microcontroller MB9B500 Series Manual de usuario Pagina 18