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USING THE ST7 USB LOW-SPEED LIBRARY V4.2x

4.2.3 . Set_EP_Ready

Figure 4: Set_EP_Ready architecture

4.3 FUNCTIONS ALREADY AVAILABLE FOR HID CLASS

You will find the following functions in the file “HIDlayer.c” (in “Appli” directory) :

Note: They are given as example only and are not part of the USB core Library.

Function

Description

Handle_HID_Requests

Decode Human Interface Device requests.

Get_Output

Build output report (Mandatory if Output usage is defined).

Get_Input

Build input report (Mandatory if Input usage is defined).

Get_Feature

Build feature report (Mandatory if Feature usage is defined).

Set_Feature

Process feature report.

Set_Output

Process output report.

Void Set_EP_Ready (EndPoint, Direction, Length)

EP0 ?

IN ?

YES

YES

NO

Enable EP0 for next IN token :

set number of data to send

set EP0 VALID for transmission

Enable EP0 for next OUT token :

set EP0 VALID for reception

EP2 ?

IN ?

YES

YES

NO

EP1 ?

IN ?

YES

YES

NO

Return

NO

NO

NO

Enable EP1 for next IN token :

set number of data to send

set EP1 VALID for transmission

Enable EP1 for next OUT token :

set EP1 VALID for reception

Enable EP2 for next IN token :

set number of data to send

set EP2 VALID for transmission

Enable EP2 for next OUT token :

set EP2 VALID for reception