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;

    }

}