Subversion Repositories usb_fpga_1_2

/*!
   Java Driver API for the ZTEX Firmware Kit
   Copyright (C) 2008-2009 ZTEX e.K.
   http://www.ztex.de
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 3 as
   published by the Free Software Foundation.
 
   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, see http://www.gnu.org/licenses/.
!*/
 
/* 
    USB device with ZTEX descriptor 1 and/or Cypress EZ-USB FX2 device
*/
package ztex;
 
import java.io.*;
import java.util.*;
 
import ch.ntb.usb.*;
 
/**
  * A class representing an EZ-USB device that supports the ZTEX descriptor 1 or an unconfigured EZ-USB device.<br>
  * Instances of this class are usually created by {@link ZtexScanBus1}.
  * The following table describes the ZTEX descriptor 1.
  * <table bgcolor="#404040" cellspacing=1 cellpadding=4>
  *   <tr>
  *     <td bgcolor="#d0d0d0" valign="top"><b>Field name</b></td>
  *     <td bgcolor="#d0d0d0" valign="top"><b>Offset</b></td>
  *     <td bgcolor="#d0d0d0" valign="top"><b>Size</b></td>
  *     <td bgcolor="#d0d0d0" valign="top"><b>Description</b></td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">ZTEX_DESCRIPTOR_SIZE</td>
  *     <td bgcolor="#ffffff" valign="top">0</td>
  *     <td bgcolor="#ffffff" valign="top">1</td>
  *     <td bgcolor="#ffffff" valign="top">Size of the descriptor in bytes; must be 40 for descriptor version 1</td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">ZTEX_DESCRIPTOR_VERSION</td>
  *     <td bgcolor="#ffffff" valign="top">1</td>
  *     <td bgcolor="#ffffff" valign="top">1</td>
  *     <td bgcolor="#ffffff" valign="top">Descriptor version; 1 for version 1</td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">ZTEXID</td>
  *     <td bgcolor="#ffffff" valign="top">2</td>
  *     <td bgcolor="#ffffff" valign="top">4</td>
  *     <td bgcolor="#ffffff" valign="top">ID; must be "ZTEX"</td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">PRODUCT_ID</td>
  *     <td bgcolor="#ffffff" valign="top">6</td>
  *     <td bgcolor="#ffffff" valign="top">4</td>
  *     <td bgcolor="#ffffff" valign="top">Four numbers (0..255) representing the product ID and firmware compatibility information.<br>
  *         A firmware can overwrite an installed one<br>
  *	   <pre>if ( INSTALLED.PRODUCTID[0]==0 || PRODUCTID[0]==0 || INSTALLED.PRODUCTID[0]==PRODUCTID[0] ) && 
   ( INSTALLED.PRODUCTID[1]==0 || PRODUCTID[1]==0 || INSTALLED.PRODUCTID[1]==PRODUCTID[1] ) && 
   ( INSTALLED.PRODUCTID[2]==0 || PRODUCTID[2]==0 || INSTALLED.PRODUCTID[2]==PRODUCTID[2] ) && 
   ( INSTALLED.PRODUCTID[3]==0 || PRODUCTID[3]==0 || INSTALLED.PRODUCTID[3]==PRODUCTID[3] ) </pre>
  *       Here is a list of the preserved product ID's:
  *       <table><tr><td>&nbsp</td><td>
  *         <table>
  *          <tr><td>0.0.0.0</td> <td>default Product ID (no product specified)</td></tr>
  *           <tr><td>1.*.*.*</td> <td>may be used for experimental purposes</td></tr>
  *           <tr><td>10.*.*.*</td> <td>used for ZTEX products</td></tr>
  *           <tr><td>10.11.*.*</td> <td><a href="http://www.ztex.de/usb-fpga-1/usb-fpga-1.2.e.html">ZTEX USB-FPGA-Module 1.2</a></td></tr>
  *           <tr><td>10.20.*.*</td> <td><a href="http://www.ztex.de/usb-1/usb-1.0.e.html">ZTEX USB-Module 1.0</a></td></tr>
  *         </table></td></tr></table>
  *         Please contact me (<a href="http://www.ztex.de/contact.e.html">http://www.ztex.de/contact.e.html</a>) if you want to register or reserve a Product ID (range).
  *       </td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">FW_VERSION</td>
  *     <td bgcolor="#ffffff" valign="top">10</td>
  *     <td bgcolor="#ffffff" valign="top">1</td>
  *     <td bgcolor="#ffffff" valign="top">May be used to specify the firmware version.</td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">INTERFACE_VERSION</td>
  *     <td bgcolor="#ffffff" valign="top">11</td>
  *     <td bgcolor="#ffffff" valign="top">1</td>
  *     <td bgcolor="#ffffff" valign="top">The interface version. This number specifies the protocol that is used for interfacing the host software. A description of interface version 1 can be found in {@link Ztex1v1} </td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">INTERFACE_CAPABILITIES</td>
  *     <td bgcolor="#ffffff" valign="top">12</td>
  *     <td bgcolor="#ffffff" valign="top">6</td>
  *     <td bgcolor="#ffffff" valign="top">6 bytes, each bit represents a capability. If set, the capability is supported. A description of the capabilities of interface version 1 can be found in {@link Ztex1v1} </td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">MODULE_RESERVED</td>
  *     <td bgcolor="#ffffff" valign="top">18</td>
  *     <td bgcolor="#ffffff" valign="top">12</td>
  *     <td bgcolor="#ffffff" valign="top">12 bytes for application specific use, i.e. they depend from the PRODUCT_ID </td>
  *   </tr>
  *   <tr>
  *     <td bgcolor="#ffffff" valign="top">SN_STRING</td>
  *     <td bgcolor="#ffffff" valign="top">30</td>
  *     <td bgcolor="#ffffff" valign="top">10</td>
  *     <td bgcolor="#ffffff" valign="top">A serial number string of 10 characters. The default SN is "0000000000"</td> </td>
  *   </tr>
  * </table>
  * @see Ztex1
  * @see Ztex1v1
  * @see ZtexScanBus1
*/
 
public class ZtexDevice1 {
/** * The Cypress vendor ID 0x4b4. */
    public static final int cypressVendorId = 0x4b4;
/** * The EZ-USB product ID 0x8613. */
    public static final int cypressProductId = 0x8613;
 
    private Usb_Device dev = null;
    private boolean isCypress = false; 		// true if Cypress device
    private boolean valid = false;		// true if descriptor 1 is available
    private int usbVendorId = -1;
    private int usbProductId = -1;
    private String manufacturerString = null;
    private String productString = null;
    private String snString = null;
    private byte productId[] = { 0,0,0,0 };	// product ID from the ZTEX descriptor, not the USB product ID
    private byte fwVersion = 0;
    private byte interfaceVersion = 0;
    private byte interfaceCapabilities[] = { 0,0,0,0, 0,0 };
    private byte moduleReserved[] = { 0,0,0,0, 0,0,0,0, 0,0,0,0 };
 
// ******* byteArrayString *****************************************************
/**
  * Produces a nice string representation of an array of bytes.
  * @param buf A byte array.
  * @return a nice string
  */ 
    public static String byteArrayString ( byte buf[] ) {
	String s = new String( "" );
	for ( int i = 0; i<buf.length; i++ ) {
	    if ( i != 0 ) 
		s+=".";
	    s+=buf[i] & 255;
	}
	return s;
    }
 
// ******* ZtexDevice1 *********************************************************
/**
  * Constructs an instance from a given USB device.<br>
  * If the given vendor and product id's match to the vendor and product id's of the given USB device,
  * the ZTEX descriptor 1 is attempted to read. If this fails, an {@link InvalidFirmwareException} is thrown.
  * To suppress this behavior (e.g. if the EZ-USB device is known to be unconfigured) the vendor and product id's 
  * can be set to -1.
  * @param p_dev The USB device.
  * @param pUsbVendorId The given vendor ID.
  * @param pUsbProductId The given product ID.
  * @throws UsbException if an USB communication error occurs.
  * @throws InvalidFirmwareException if no valid ZTEX descriptor 1 is found.
  */
    public ZtexDevice1 (Usb_Device p_dev, int pUsbVendorId, int pUsbProductId) throws UsbException, InvalidFirmwareException {
	dev = p_dev;
 
	Usb_Device_Descriptor dd = dev().getDescriptor();
	usbVendorId = dd.getIdVendor() & 65535;
	usbProductId = dd.getIdProduct() & 65535;
 
	if ( usbVendorId == cypressVendorId  &&  usbProductId == cypressProductId ) {
	    isCypress = true;
	}
 
	int handle = LibusbJava.usb_open(dev);
 
	if ( handle > 0 ) {
	    if ( dd.getIManufacturer() > 0 ) 
	    	manufacturerString = LibusbJava.usb_get_string_simple( handle, dd.getIManufacturer() );
	    if ( dd.getIProduct() > 0 ) 
	    	productString = LibusbJava.usb_get_string_simple( handle, dd.getIProduct() );
	    if ( dd.getISerialNumber() > 0 )  
	    	snString = LibusbJava.usb_get_string_simple( handle, dd.getISerialNumber() );
 
	    if ( usbVendorId == pUsbVendorId  &&  usbProductId == pUsbProductId ) {
		if ( snString == null ) {
		    LibusbJava.usb_close(handle);
		    throw new InvalidFirmwareException( dev, "Not a ZTEX device" );  // ZTEX devices always have a SN. See also the next comment a few lines below
		} 
 
	    	byte[] buf = new byte[42];
		int i = LibusbJava.usb_control_msg(handle, 0xc0, 0x22, 0, 0, buf, 40, 500);	// Failing of this may cause problems under windows. Therefore we check for the SN above.
		if ( i < 0 ) {
		    LibusbJava.usb_close(handle);
		    throw new InvalidFirmwareException( dev, "Error reading ZTEX descriptor: " + LibusbJava.usb_strerror() );
		}
		else if ( i != 40 ) {
		    LibusbJava.usb_close(handle);
		    throw new InvalidFirmwareException( dev, "Error reading ZTEX descriptor: Invalid size: " + i );
		}
		if ( buf[0]!=40 || buf[1]!=1 || buf[2]!='Z' || buf[3]!='T' || buf[4]!='E' || buf[5]!='X' ) {
		    LibusbJava.usb_close(handle);
		    throw new InvalidFirmwareException( dev, "Invalid ZTEX descriptor" );
		}
		productId[0] = buf[6];
		productId[1] = buf[7];
		productId[2] = buf[8];
		productId[3] = buf[9];
		fwVersion = buf[10];
		interfaceVersion = buf[11];
		interfaceCapabilities[0] = buf[12];
		interfaceCapabilities[1] = buf[13];
		interfaceCapabilities[2] = buf[14];
		interfaceCapabilities[3] = buf[15];
		interfaceCapabilities[4] = buf[16];
		interfaceCapabilities[5] = buf[17];
		moduleReserved[0] = buf[18];
		moduleReserved[1] = buf[19];
		moduleReserved[2] = buf[20];
		moduleReserved[3] = buf[21];
		moduleReserved[4] = buf[22];
		moduleReserved[5] = buf[23];
		moduleReserved[6] = buf[24];
		moduleReserved[7] = buf[25];
		moduleReserved[8] = buf[26];
		moduleReserved[9] = buf[27];
		moduleReserved[10] = buf[28];
		moduleReserved[11] = buf[29];
 
		valid = true;
	    }
	}
	else {
	    throw new UsbException( dev, "Error opening device: " + LibusbJava.usb_strerror() );
	}
 
        LibusbJava.usb_close(handle);
    }
 
// ******* toString ************************************************************
/** 
  * Returns a string representation if the device with a lot of useful information.
  * @return a string representation if the device with a lot of useful information.
  */
    public String toString () {
	return "bus=" + dev().getBus().getDirname() + "  device=" + dev().getFilename() + 
	    "\n   " + ( isCypress ? "Cypress" : "" ) +
	      ( manufacturerString == null ? "" : ("    Manufacturer=\""  + manufacturerString + "\"") ) +
	      ( productString == null ? "" : ("  Product=\""  + productString + "\"") ) +
	      ( snString == null ? "" : ("    SerialNumber=\""  + snString + "\"") ) +
	    ( valid ? "\n   productID=" + byteArrayString(productId) + "  fwVer="+(fwVersion & 255) + "  ifVer="+(interfaceVersion & 255)  : "" );
    }
 
// ******* compatible **********************************************************
/** 
  * Checks whether the given product ID is compatible to the device.<br>
  * The given product ID is compatible
  * <pre>if ( this.productId(0)==0 || productId0<=0 || this.productId(0)==productId0 ) && 
   ( this.productId(0)==0 || productId1<=0 || this.productId(1)==productId1 ) && 
   ( this.productId(2)==0 || productId2<=0 || this.productId(2)==productId2 ) && 
   ( this.productId(3)==0 || productId3<=0 || this.productId(3)==productId3 ) </pre>
  * @param productId0 Byte 0 of the given product ID
  * @param productId1 Byte 1 of the given product ID
  * @param productId2 Byte 2 of the given product ID
  * @param productId3 Byte 3 of the given product ID
  * @return true if the given product ID is compatible
  */
    public final boolean compatible( int productId0, int productId1, int productId2, int productId3 ) {
	return ( productId[0]==0 || productId0<=0 || (productId[0] & 255) == productId0 ) &&
	       ( productId[1]==0 || productId1<=0 || (productId[1] & 255) == productId1 ) &&
	       ( productId[2]==0 || productId2<=0 || (productId[2] & 255) == productId2 ) &&
	       ( productId[3]==0 || productId3<=0 || (productId[3] & 255) == productId3 );
    }
 
// ******* dev *****************************************************************
/** 
  * Returns the USB device.
  * @return the USB device.
  */
    public final Usb_Device dev() {
	return dev;
    }
 
// ******* isCypress ***********************************************************
/** 
  * Returns true if the device has Cypress EZ-USB vendor and product ID's (0x4b4 and 0x8613).
  * @return true if the device has Cypress EZ-USB vendor and product ID's (0x4b4 and 0x8613).
  */
    public final boolean isCypress() {
	return isCypress;
    }
 
// ******* valid ***************************************************************
/** 
  * Returns true if ZTEX descriptor 1 is available.
  * @return true if ZTEX descriptor 1 is available.
  */
    public final boolean valid() {
	return valid;
    }
 
// ******* usbVendorId *********************************************************
/** 
  * Returns the USB vendor ID of the device.
  * @return the USB vendor ID of the device.
  */
    public final int usbVendorId() {
	return usbVendorId;
    }
 
// ******* usbProductId *********************************************************
/** 
  * Returns the USB product ID of the device.
  * @return the USB product ID of the device.
  */
    public final int usbProductId() {
	return usbProductId;
    }
 
// ******* manufacturerString **************************************************
/** 
  * Returns the manufacturer string of the device.
  * @return the manufacturer string of the device.
  */
    public final String manufacturerString() {
	return manufacturerString;
    }
 
// ******* productString *******************************************************
/** 
  * Returns the product string of the device.
  * @return the product string of the device.
  */
    public final String productString() {
	return productString;
    }
 
// ******* snString ************************************************************
/** 
  * Returns the serial number string of the device.
  * @return the serial number string of the device.
  */
    public final String snString() {
	return snString;
    }
 
// ******* productId ***********************************************************
/** 
  * Returns the product ID (all 4 bytes).
  * @return PRODUCT_ID, see above.
  */
    public final byte[] productId() {
	return productId;
    }
 
/** 
  * Returns byte i of the product ID.
  * @return PRODUCT_ID[i], see above.
  * @param i index 
  */
    public int productId( int i ) {
	return productId[i] & 255;
    }
 
// ******* fwVersion ***********************************************************
/** 
  * Returns the firmware version.
  * @return FW_VERSION, see above.
  */
    public final int fwVersion() {
	return fwVersion & 255;
    }
 
// ******* interfaceVersion *****************************************************
/** 
  * Returns the interface version.
  * @return INTERFACE_VERSION, see above.
  */
    public final int interfaceVersion() {
	return interfaceVersion & 255;
    }
 
// ******* interfaceCapabilities ************************************************
/** 
  * Returns the interface capabilities (all 6 bytes).
  * @return INTERFACE_CAPABILITIES, see above.
  */
    public final byte[] interfaceCapabilities() {
	return interfaceCapabilities;
    }
 
/** 
  * Returns byte i of the interface capabilities.
  * @return INTERFACE_CAPABILITIES[i], see above.
  * @param i index 
  */
    public final int interfaceCapabilities( int i ) {
	return interfaceCapabilities[i] & 255;
    }
 
/** 
  * Returns byte i, bit j  of the interface capabilities.
  * @return INTERFACE_CAPABILITIES[i].j, see above.
  * @param i byte index 
  * @param j bit index 
  */
    public final boolean interfaceCapabilities( int i, int j ) {
	return 	(i>=0) && (i<=5) && (j>=0) && (j<8) &&
		(((interfaceCapabilities[i] & 255) & (1 << j)) != 0);
    }
 
// ******* moduleReserved ******************************************************
/** 
  * Returns the application specific information (all 12 bytes).
  * @return MODULE_RESERVED, see above.
  */
    public final byte[] moduleReserved() {
	return moduleReserved;
    }
 
/** 
  * Returns byte i of the application specific information.
  * @return MODULE_RESERVED[i], see above.
  * @param i index 
  */
    public final int moduleReserved( int i ) {
	return moduleReserved[i] & 255;
    }
 
}