usbfeaturerequest.h

Atmel的AT91SAM9263芯片的usb存储源程序

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/*
    Title: USBFeatureRequest

    About: Purpose
        Definition of a class for manipulating CLEAR_FEATURE and SET_FEATURE
        requests.
*/

#ifndef USBFEATUREREQUEST_H
#define USBFEATUREREQUEST_H

//------------------------------------------------------------------------------
//         Headers
//------------------------------------------------------------------------------

#include "USBGenericRequest.h"

//------------------------------------------------------------------------------
//         Definitions
//------------------------------------------------------------------------------
/*
    Constants: Feature selectors
        USBFeatureRequest_ENDPOINTHALT - Halt feature of an endpoint.
        USBFeatureRequest_DEVICEREMOTEWAKEUP - Remote wake-up feature of the
                                               device.
        USBFeatureRequest_TESTMODE - Test mode of the device.
*/
#define USBFeatureRequest_ENDPOINTHALT          0
#define USBFeatureRequest_DEVICEREMOTEWAKEUP    1
#define USBFeatureRequest_TESTMODE              2

/*
    Constants: Test mode selectors
        USBFeatureRequest_TESTJ - Tests the high-output drive level on the D+
                                  line.
        USBFeatureRequest_TESTK - Tests the high-output drive level on the D-
                                  line.
        USBFeatureRequest_TESTSE0NAK - Tests the output impedance, low-level
                                       output voltage and loading characteristics.
        USBFeatureRequest_TESTPACKET - Tests rise and fall times, eye patterns
                                       and jitter.
        USBFeatureRequest_TESTFORCEENABLE - Tests the hub disconnect detection.
        USBFeatureRequest_TESTSENDZLP - Send a ZLP in Test Mode.
*/
#define USBFeatureRequest_TESTJ                 1
#define USBFeatureRequest_TESTK                 2
#define USBFeatureRequest_TESTSE0NAK            3
#define USBFeatureRequest_TESTPACKET            4
#define USBFeatureRequest_TESTFORCEENABLE       5
#define USBFeatureRequest_TESTSENDZLP           6

//------------------------------------------------------------------------------
//         Exported functions
//------------------------------------------------------------------------------
/*
    Function: USBFeatureRequest_GetFeatureSelector
        Returns the feature selector of a given CLEAR_FEATURE or SET_FEATURE
        request.

    Parameters:
        request - Pointer to a USBGenericRequest instance.

    Returns:
        Feature selector.
*/
extern unsigned char USBFeatureRequest_GetFeatureSelector(
    const USBGenericRequest *request);

/*
    Function: USBFeatureRequest_GetTestSelector
        Indicates the test that the device must undertake following a
        SET_FEATURE request.

    Parameters:
        request - Pointer to a USBGenericRequest instance.

    Returns:
        Test selector.
*/
extern unsigned char USBFeatureRequest_GetTestSelector(
    const USBGenericRequest *request);

#endif //#ifndef USBFEATUREREQUEST_H