setuppacket.java

来自「纯java操作系统jnode,安装简单和操作简单的个人使用的Java操作系统」· Java 代码 · 共 157 行

/*
 * $Id: SetupPacket.java,v 1.1 2003/11/25 11:41:20 epr Exp $
 */
package org.jnode.driver.usb;

/**
 * Java wrapper of an USB Setup packet.
 * 
 * @author Ewout Prangsma ([e-mail])
 */
public class SetupPacket extends USBPacket implements USBConstants {

	/**
	 * Create a new instance
	 * 
	 * @param requestType
	 * @param request
	 * @param value
	 * @param index
	 * @param length
	 */
	public SetupPacket(int requestType, int request, int value, int index, int length) {
		super(8);
		setByte(0, requestType);
		setByte(1, request);
		setShort(2, value);
		setShort(4, index);
		setShort(6, length);
	}

	/**
	 * Gets the request type.
	 */
	public final int getRequestType() {
		return getByte(0);
	}

	/**
	 * Gets the request.
	 */
	public final int getRequest() {
		return getByte(1);
	}

	/**
	 * Gets the value.
	 */
	public final int getValue() {
		return getShort(2);
	}

	/**
	 * Gets the index.
	 */
	public final int getIndex() {
		return getShort(4);
	}

	/**
	 * Gets the length.
	 */
	public final int getLength() {
		return getShort(6);
	}

	/**
	 * Is this a Host to Device transfer.
	 */
	public boolean isDirOut() {
		return ((getRequestType() & USB_DIR_MASK) == USB_DIR_OUT);
	}

	/**
	 * Is this a Device to Host transfer.
	 */
	public boolean isDirIn() {
		return ((getRequestType() & USB_DIR_MASK) == USB_DIR_IN);
	}

	/**
	 * Create a device SET_ADDRESS setup packet
	 */
	public static SetupPacket createDeviceSetAddressPacket(int deviceAddress) {
		return new SetupPacket(USB_DIR_OUT | USB_RECIP_DEVICE, USB_REQ_SET_ADDRESS, deviceAddress, 0, 0);
	}

	/**
	 * Create a device GET_CONFIGURATION setup packet
	 */
	public static SetupPacket createDeviceGetConfigurationPacket() {
		return new SetupPacket(USB_DIR_IN | USB_RECIP_DEVICE, USB_REQ_GET_CONFIGURATION, 0, 0, 1);
	}

	/**
	 * Create a device SET_CONFIGURATION setup packet
	 */
	public static SetupPacket createDeviceSetConfigurationPacket(int configValue) {
		return new SetupPacket(USB_DIR_OUT | USB_RECIP_DEVICE, USB_REQ_SET_CONFIGURATION, configValue, 0, 0);
	}

	/**
	 * Create an interface GET_INTERFACE setup packet
	 */
	public static SetupPacket createInterfaceGetInterfacePacket(int intface) {
		return new SetupPacket(USB_DIR_IN | USB_RECIP_INTERFACE, USB_REQ_GET_INTERFACE, 0, intface, 1);
	}

	/**
	 * Create an interface SET_INTERFACE setup packet
	 */
	public static SetupPacket createInterfaceSetInterfacePacket(int intface, int configValue) {
		return new SetupPacket(USB_DIR_OUT | USB_RECIP_INTERFACE, USB_REQ_SET_INTERFACE, configValue, intface, 0);
	}

	/**
	 * Create an endpoint SYNC_FRAME setup packet
	 */
	public static SetupPacket createEndPointSyncFramePacket(int endPoint) {
		return new SetupPacket(USB_DIR_IN | USB_RECIP_ENDPOINT, USB_REQ_SYNCH_FRAME, 0, endPoint, 2);
	}

	/**
	 * Create an interface SET_INTERFACE setup packet
	 */
	public static SetupPacket createEndPointSetInterfacePacket(int configValue) {
		return new SetupPacket(USB_DIR_OUT | USB_RECIP_INTERFACE, USB_REQ_SET_INTERFACE, configValue, 0, 0);
	}

	/**
	 * Create a generic GET_DESCRIPTOR setup packet
	 */
	public static SetupPacket createGetDescriptorPacket(int reqType, int descrType, int index, int langId, int descrLength) {
		return new SetupPacket(USB_DIR_IN | reqType, USB_REQ_GET_DESCRIPTOR, (descrType << 8) | index, langId, descrLength);
	}

	/**
	 * Create an generic GET_STATUS setup packet
	 */
	public static SetupPacket createGetStatusPacket(int reqType, int index) {
		return new SetupPacket(USB_DIR_IN | reqType, USB_REQ_GET_STATUS, 0, index, 2);
	}

	/**
	 * Create an generic CLEAR_FEATURE setup packet
	 */
	public static SetupPacket createClearFeaturePacket(int reqType, int index, int featureSelector) {
		return new SetupPacket(USB_DIR_OUT | reqType, USB_REQ_CLEAR_FEATURE, featureSelector, index, 0);
	}

	/**
	 * Create an generic SET_FEATURE setup packet
	 */
	public static SetupPacket createSetFeaturePacket(int reqType, int index, int featureSelector) {
		return new SetupPacket(USB_DIR_OUT | reqType, USB_REQ_SET_FEATURE, featureSelector, index, 0);
	}
}