| Line 24... |
Line 24... |
import java.io.*;
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import java.io.*;
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import java.util.*;
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import java.util.*;
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import ch.ntb.usb.*;
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import ch.ntb.usb.*;
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/**
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* This class implements the interface-independent part of the communication protocol for the interaction with the ZTEX firmware.<p>
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* All firmware implementations that provide the ZTEX descriptor 1 are supported.
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* A description of this descriptor can be found in {@link ZtexDevice1}.
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* <p>
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* The most important features of this class are the functions for uploading the firmware
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* and the renumeration management.
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* <p>
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* The interface dependent part of the communication protocol (currently only one is supported)
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* can be found in {@link Ztex1v1}.
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* @see ZtexDevice1
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* @see Ztex1v1
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*/
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public class Ztex1 {
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public class Ztex1 {
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protected int handle;
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private int handle;
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protected ZtexDevice1 dev = null;
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private ZtexDevice1 dev = null;
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private boolean oldDevices[] = new boolean[128];
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private boolean oldDevices[] = new boolean[128];
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private String usbBusName = null;
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private String usbBusName = null;
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/** * Setting to true will enable certain workarounds, e.g. to deal with bad driver/OS implementations. */
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public boolean certainWorkarounds = false;
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/** * The timeout for control messages in ms. */
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public int controlMsgTimeout = 1000; // in ms
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private long lastVendorCommandT = 0;
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// ******* Ztex1 ***************************************************************
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// ******* Ztex1 ***************************************************************
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/**
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* Constructs an instance from a given device.
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* @param pDev The given device.
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* @throws UsbException if an communication error occurred.
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*/
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public Ztex1 ( ZtexDevice1 pDev ) throws UsbException {
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public Ztex1 ( ZtexDevice1 pDev ) throws UsbException {
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dev = pDev;
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dev = pDev;
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handle = LibusbJava.usb_open(dev.dev());
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handle = LibusbJava.usb_open(dev.dev());
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if ( handle<=0 )
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if ( handle<=0 )
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throw new UsbException(dev.dev(), "Error opening device");
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throw new UsbException(dev.dev(), "Error opening device");
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}
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}
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// ******* finalize ************************************************************
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// ******* finalize ************************************************************
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/** * The destructor closes the USB file handle. */
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protected void finalize () {
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protected void finalize () {
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LibusbJava.usb_close(handle);
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LibusbJava.usb_close(handle);
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}
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}
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// ******* handle **************************************************************
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// ******* handle **************************************************************
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/** * Returns the USB file handle. */
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public final int handle()
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public final int handle()
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{
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{
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return handle;
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return handle;
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}
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}
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// ******* dev *****************************************************************
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// ******* dev *****************************************************************
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/**
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* Returns the corresponding {@link ZtexDevice1}.
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* @return the corresponding {@link ZtexDevice1}.
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*/
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public final ZtexDevice1 dev()
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public final ZtexDevice1 dev()
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{
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{
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return dev;
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return dev;
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}
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}
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// ******* valid ***************************************************************
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// ******* valid ***************************************************************
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/**
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* Returns true if ZTEX descriptor 1 is available.
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* @return true if ZTEX descriptor 1 is available.
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*/
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public boolean valid ( ) {
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public boolean valid ( ) {
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return dev.valid();
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return dev.valid();
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}
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}
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// ******* checkValid **********************************************************
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// ******* checkValid **********************************************************
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/**
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* Checks whether ZTEX descriptor 1 is available.
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* @throws InvalidFirmwareException if ZTEX descriptor 1 is not available.
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*/
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public void checkValid () throws InvalidFirmwareException {
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public void checkValid () throws InvalidFirmwareException {
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if ( ! dev.valid() )
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if ( ! dev.valid() )
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throw new InvalidFirmwareException(this, "Can't read ZTEX descriptor 1");
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throw new InvalidFirmwareException(this, "Can't read ZTEX descriptor 1");
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}
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}
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// ******* vendorCommand *******************************************************
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// ******* vendorCommand *******************************************************
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public int vendorCommand (int cmd, String func, int value, int index, byte[] buf, int length) throws UsbException {
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/**
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int i;
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* Sends a vendor command to Endpoint 0 of the EZ-USB device.
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if ( (i=LibusbJava.usb_control_msg(handle, 0x40, cmd, value, index, buf, length, 1000)) < 0 )
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* The command may be send multiple times until the {@link #controlMsgTimeout} is reached.
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throw new UsbException( dev.dev(), (func != null ? func + ": " : "" ) + LibusbJava.usb_strerror());
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* @param cmd The command number (0..255).
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* @param func The name of the command. This string is used for the generation of error messages.
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* @param value The value (0..65535), i.e bytes 2 and 3 of the setup data.
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* @param index The index (0..65535), i.e. bytes 4 and 5 of the setup data.
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* @param length The size of the payload data (0..65535), i.e. bytes 6 and 7 of the setup data.
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* @param buf The payload data buffer.
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* @return the number of bytes sent.
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* @throws UsbException if a communication error occurs.
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*/
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public synchronized int vendorCommand (int cmd, String func, int value, int index, byte[] buf, int length) throws UsbException {
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long t0 = new Date().getTime()-100;
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int trynum = 0;
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int i = -1;
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if ( controlMsgTimeout < 200 )
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controlMsgTimeout = 200;
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while ( i<=0 && new Date().getTime()-t0<controlMsgTimeout ) { // we repeat the message until the timeout has reached
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i = LibusbJava.usb_control_msg(handle, 0x40, cmd, value, index, buf, length, controlMsgTimeout);
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if ( certainWorkarounds ) {
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try {
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try {
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Thread.sleep(1); // avoid package loss (due to interrupts ?)
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Thread.sleep(2);
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}
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}
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catch ( InterruptedException e ) {
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catch ( InterruptedException e ) {
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}
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}
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}
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lastVendorCommandT = new Date().getTime();
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if ( i < 0 ) {
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System.err.println("Warning (try " + (trynum+1) + "): " + LibusbJava.usb_strerror() );
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try {
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Thread.sleep( 1 << trynum ); // we don't want to bother the USB device to often
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}
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catch ( InterruptedException e ) {
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}
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trynum++;
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}
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}
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if ( i < 0 )
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throw new UsbException( dev.dev(), (func != null ? func + ": " : "" )+ LibusbJava.usb_strerror());
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return i;
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return i;
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}
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}
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/**
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* Sends a vendor command with no payload data to Endpoint 0 of the EZ-USB device.
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* The command may be send multiple times until the {@link #controlMsgTimeout} is reached.
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* @param cmd The command number (0..255).
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* @param func The name of the command. This string is used for the generation of error messages.
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* @param value The value (0..65535), i.e bytes 2 and 3 of the setup data.
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* @param index The index (0..65535), i.e. bytes 4 and 5 of the setup data.
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* @return the number of bytes sent.
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* @throws UsbException if a communication error occurs.
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*/
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public int vendorCommand (int cmd, String func, int value, int index) throws UsbException {
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public int vendorCommand (int cmd, String func, int value, int index) throws UsbException {
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byte[] buf = { 0 };
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byte[] buf = { 0 };
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return vendorCommand (cmd, func, value, index, buf, 0);
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return vendorCommand (cmd, func, value, index, buf, 0);
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}
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}
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/**
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* Sends a vendor command with no payload data and no setup data to Endpoint 0 of the EZ-USB device.
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* The command may be send multiple times until the {@link #controlMsgTimeout} is reached.
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* @param cmd The command number (0..255).
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* @param func The name of the command. This string is used for the generation of error messages.
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* @return the number of bytes sent.
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* @throws UsbException if a communication error occurs.
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*/
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public int vendorCommand (int cmd, String func) throws UsbException {
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public int vendorCommand (int cmd, String func) throws UsbException {
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byte[] buf = { 0 };
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byte[] buf = { 0 };
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return vendorCommand (cmd, func, 0, 0, buf, 0);
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return vendorCommand (cmd, func, 0, 0, buf, 0);
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}
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}
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// ******* vendorRequest *******************************************************
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// ******* vendorRequest *******************************************************
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public int vendorRequest (int cmd, String func, int value, int index, byte[] buf, int maxlen) throws UsbException {
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/**
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int i = LibusbJava.usb_control_msg(handle, 0xc0, cmd, value, index, buf, maxlen, 1000);
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* Sends a vendor request to Endpoint 0 of the EZ-USB device.
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if ( i < 0 )
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* The request may be send multiple times until the {@link #controlMsgTimeout} is reached.
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throw new UsbException( dev.dev(), (func != null ? func + ": " : "" ) + LibusbJava.usb_strerror());
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* @param cmd The request number (0..255).
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* @param func The name of the request. This string is used for the generation of error messages.
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* @param value The value (0..65535), i.e bytes 2 and 3 of the setup data.
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* @param index The index (0..65535), i.e. bytes 4 and 5 of the setup data.
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* @param maxlen The size of the requested payload data (0..65535), i.e. bytes 6 and 7 of the setup data.
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* @param buf The payload data buffer.
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* @return the number of bytes received.
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* @throws UsbException if a communication error occurs.
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*/
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public synchronized int vendorRequest (int cmd, String func, int value, int index, byte[] buf, int maxlen) throws UsbException {
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long t0 = new Date().getTime()-100;
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int trynum = 0;
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int i = -1;
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if ( controlMsgTimeout < 200 )
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controlMsgTimeout = 200;
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while ( i<=0 && new Date().getTime()-t0<controlMsgTimeout ) { // we repeat the message until the timeout has reached
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/*
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The HSNAK mechanism of EP0 usually avoids that a request is sent before a command has been completed.
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Unfortunately this mechanism is only 99.99% reliable. Therefore we wait at least 1ms after the last
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command has been send before we transmit a new request.
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*/
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long ms = new Date().getTime() - lastVendorCommandT;
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if ( ms < 2 ) { //
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try {
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try {
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Thread.sleep(1); // avoid package loss (due to interrupts ?)
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Thread.sleep(1);
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}
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}
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catch ( InterruptedException e ) {
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catch ( InterruptedException e ) {
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}
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}
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}
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i = LibusbJava.usb_control_msg(handle, 0xc0, cmd, value, index, buf, maxlen, controlMsgTimeout);
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if ( certainWorkarounds ) {
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try {
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Thread.sleep(2);
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}
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catch ( InterruptedException e ) {
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}
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}
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if ( i < 0 ) {
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System.err.println("Warning (try " + (trynum+1) + "): " + LibusbJava.usb_strerror() );
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try {
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Thread.sleep( 1 << trynum ); // we don't want to bother the USB device to often
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}
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catch ( InterruptedException e ) {
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}
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trynum++;
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}
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}
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if ( i < 0 )
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throw new UsbException( dev.dev(), (func != null ? func + ": " : "" ) + LibusbJava.usb_strerror());
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return i;
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return i;
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}
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}
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/**
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* Sends a vendor request to Endpoint 0 of the EZ-USB device.
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* The request may be send multiple times until the {@link #controlMsgTimeout} is reached.
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* @param cmd The request number (0..255).
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* @param func The name of the request. This string is used for the generation of error messages.
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* @param maxlen The size of the requested payload data (0..65535), i.e. bytes 6 and 7 of the setup data.
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* @param buf The payload data buffer.
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* @return the number of bytes sent.
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* @throws UsbException if a communication error occurs.
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*/
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public int vendorRequest (int cmd, String func, byte[] buf, int maxlen) throws UsbException {
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public int vendorRequest (int cmd, String func, byte[] buf, int maxlen) throws UsbException {
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return vendorRequest (cmd, func, 0, 0, buf, maxlen);
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return vendorRequest (cmd, func, 0, 0, buf, maxlen);
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}
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}
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// ******* vendorCommand2 ******************************************************
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// ******* vendorCommand2 ******************************************************
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public void vendorCommand2 (int cmd, String func, int value, int index, byte[] buf, int length) throws UsbException {
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/**
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* Sends a vendor command to Endpoint 0 of the EZ-USB device and throws an {@link UsbException} if not all of the payload has been sent.
|
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* The command may be send multiple times until the {@link #controlMsgTimeout} is reached.
|
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* @param cmd The command number (0..255).
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* @param func The name of the command. This string is used for the generation of error messages.
|
|
* @param value The value (0..65535), i.e bytes 2 and 3 of the setup data.
|
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* @param index The index (0..65535), i.e. bytes 4 and 5 of the setup data.
|
|
* @param length The size of the payload data (0..65535), i.e. bytes 6 and 7 of the setup data.
|
|
* @param buf The payload data buffer.
|
|
* @throws UsbException if a communication error occurs or if not all of the payload has been sent.
|
|
*/
|
|
public synchronized void vendorCommand2 (int cmd, String func, int value, int index, byte[] buf, int length) throws UsbException {
|
int i = vendorCommand (cmd, func, value, index, buf, length);
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int i = vendorCommand (cmd, func, value, index, buf, length);
|
if ( i != length )
|
if ( i != length )
|
throw new UsbException( dev.dev(), (func != null ? func + ": " : "" ) + "Send " + i + " byte of data instead of " + length + " bytes");
|
throw new UsbException( dev.dev(), (func != null ? func + ": " : "" ) + "Send " + i + " byte of data instead of " + length + " bytes");
|
}
|
}
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|
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public void vendorCommand2 (int cmd, String func, int value, int index) throws UsbException {
|
|
byte[] buf = { 0 };
|
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vendorCommand2 (cmd, func, value, index, buf, 0);
|
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}
|
|
|
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public void vendorCommand2 (int cmd, String func) throws UsbException {
|
|
byte[] buf = { 0 };
|
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vendorCommand2 (cmd, func, 0, 0, buf, 0);
|
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}
|
|
|
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// ******* vendorRequest2 ******************************************************
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// ******* vendorRequest2 ******************************************************
|
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/**
|
|
* Sends a vendor request to Endpoint 0 of the EZ-USB device and throws an {@link UsbException} if not all of the payload has been received.
|
|
* The request may be send multiple times until the {@link #controlMsgTimeout} is reached.
|
|
* @param cmd The request number (0..255).
|
|
* @param func The name of the request. This string is used for the generation of error messages.
|
|
* @param value The value (0..65535), i.e bytes 2 and 3 of the setup data.
|
|
* @param index The index (0..65535), i.e. bytes 4 and 5 of the setup data.
|
|
* @param maxlen The size of the requested payload data (0..65535), i.e. bytes 6 and 7 of the setup data.
|
|
* @param buf The payload data buffer.
|
|
* @throws UsbException if a communication error occurs or not all of the payload has been received.
|
|
*/
|
public void vendorRequest2 (int cmd, String func, int value, int index, byte[] buf, int maxlen) throws UsbException {
|
public void vendorRequest2 (int cmd, String func, int value, int index, byte[] buf, int maxlen) throws UsbException {
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int i = vendorRequest(cmd, func, value, index, buf, maxlen);
|
int i = vendorRequest(cmd, func, value, index, buf, maxlen);
|
if ( i != maxlen )
|
if ( i != maxlen )
|
throw new UsbException( dev.dev(), (func != null ? func + ": " : "" ) + "Received " + i + " byte of data, expected "+maxlen+" bytes");
|
throw new UsbException( dev.dev(), (func != null ? func + ": " : "" ) + "Received " + i + " byte of data, expected "+maxlen+" bytes");
|
}
|
}
|
|
|
|
/**
|
|
* Sends a vendor request to Endpoint 0 of the EZ-USB device and throws an {@link UsbException} if not all of the payload has been received.
|
|
* The request may be send multiple times until the {@link #controlMsgTimeout} is reached.
|
|
* @param cmd The request number (0..255).
|
|
* @param func The name of the request. This string is used for the generation of error messages.
|
|
* @param maxlen The size of the requested payload data (0..65535), i.e. bytes 6 and 7 of the setup data.
|
|
* @param buf The payload data buffer.
|
|
* @throws UsbException if a communication error occurs or not all of the payload has been received.
|
|
*/
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public void vendorRequest2 (int cmd, String func, byte[] buf, int maxlen) throws UsbException {
|
public void vendorRequest2 (int cmd, String func, byte[] buf, int maxlen) throws UsbException {
|
vendorRequest2(cmd, func, 0, 0, buf, maxlen);
|
vendorRequest2(cmd, func, 0, 0, buf, maxlen);
|
}
|
}
|
|
|
// ******* findOldDevices ******************************************************
|
// ******* findOldDevices ******************************************************
|
private void findOldDevices () {
|
private synchronized void findOldDevices () {
|
Usb_Bus bus = dev.dev().getBus();
|
Usb_Bus bus = dev.dev().getBus();
|
usbBusName = bus.getDirname();
|
usbBusName = bus.getDirname();
|
|
|
for ( int i=0; i<=127; i++ )
|
for ( int i=0; i<=127; i++ )
|
oldDevices[i] = false;
|
oldDevices[i] = false;
|
| Line 154... |
Line 315... |
}
|
}
|
oldDevices[dev.dev().getDevnum()] = false;
|
oldDevices[dev.dev().getDevnum()] = false;
|
}
|
}
|
|
|
// ******* findNewDevice *******************************************************
|
// ******* findNewDevice *******************************************************
|
private Usb_Device findNewDevice ( String errMsg ) throws DeviceLostException {
|
private synchronized Usb_Device findNewDevice ( String errMsg ) throws DeviceLostException {
|
Usb_Device newDev = null;
|
Usb_Device newDev = null;
|
LibusbJava.usb_find_busses();
|
LibusbJava.usb_find_busses();
|
LibusbJava.usb_find_devices();
|
LibusbJava.usb_find_devices();
|
|
|
Usb_Bus bus = LibusbJava.usb_get_busses();
|
Usb_Bus bus = LibusbJava.usb_get_busses();
|
| Line 178... |
Line 339... |
|
|
return newDev;
|
return newDev;
|
}
|
}
|
|
|
// ******* initNewDevice *******************************************************
|
// ******* initNewDevice *******************************************************
|
private void initNewDevice ( String errBase ) throws DeviceLostException, UsbException, ZtexDescriptorException {
|
private void initNewDevice ( String errBase ) throws DeviceLostException, UsbException, InvalidFirmwareException {
|
// scan the bus for up to 5 s for a new device
|
// scan the bus for up to 60 s for a new device. Boot sequence may take a while.
|
Usb_Device newDev = null;
|
Usb_Device newDev = null;
|
for ( int i=0; i<20 && newDev==null; i++ ) {
|
for ( int i=0; i<300 && newDev==null; i++ ) {
|
try {
|
try {
|
Thread.sleep( 250 );
|
Thread.sleep( 200 );
|
}
|
}
|
catch ( InterruptedException e ) {
|
catch ( InterruptedException e ) {
|
}
|
}
|
newDev = findNewDevice( errBase + ": " );
|
newDev = findNewDevice( errBase + ": " );
|
}
|
}
|
| Line 199... |
Line 360... |
int vid = dd.getIdVendor() & 65535;
|
int vid = dd.getIdVendor() & 65535;
|
int pid = dd.getIdProduct() & 65535;
|
int pid = dd.getIdProduct() & 65535;
|
try {
|
try {
|
dev = new ZtexDevice1( newDev, vid, pid );
|
dev = new ZtexDevice1( newDev, vid, pid );
|
}
|
}
|
catch ( ZtexDescriptorException e ) {
|
catch ( InvalidFirmwareException e ) {
|
if ( vid == ZtexDevice1.cypressVendorId && pid == ZtexDevice1.cypressProductId ) {
|
if ( vid == ZtexDevice1.cypressVendorId && pid == ZtexDevice1.cypressProductId ) {
|
dev = new ZtexDevice1( newDev, -1, -1 );
|
dev = new ZtexDevice1( newDev, -1, -1 );
|
}
|
}
|
else {
|
else {
|
throw e;
|
throw e;
|
| Line 211... |
Line 372... |
}
|
}
|
handle = LibusbJava.usb_open( dev.dev() );
|
handle = LibusbJava.usb_open( dev.dev() );
|
}
|
}
|
|
|
// ******* uploadFirmware ******************************************************
|
// ******* uploadFirmware ******************************************************
|
|
/**
|
|
* Uploads the firmware to the EZ-USB and manages the renumeration process.
|
|
* <p>
|
|
* Before the firmware is uploaded the device is set into a reset state.
|
|
* After the upload the firmware is booted and the renumeration starts.
|
|
* During this process the device disappears from the bus and a new one
|
|
* occurs which will be assigned to this class automatically (instead of the disappeared one).
|
|
* @param ihxFileName The file name of the firmware image in ihx format. The file can be a regular file or a system resource (e.g. a file from the current jar archive).
|
|
* @param force The compatibility check is skipped if true.
|
|
* @throws IncompatibleFirmwareException if the given firmware is not compatible to the installed one, see {@link ZtexDevice1#compatible(int,int,int,int)} (Upload can be enforced using the <tt>force</tt> parameter)
|
|
* @throws FirmwareUploadException If an error occurred while attempting to upload the firmware.
|
|
* @throws UsbException if a communication error occurs.
|
|
* @throws InvalidFirmwareException if ZTEX descriptor 1 is not available.
|
|
* @throws DeviceLostException if a device went lost after renumeration.
|
|
*/
|
// returns upload time in ms
|
// returns upload time in ms
|
public long uploadFirmware ( String ihxFileName, boolean force ) throws IncompatibleFirmwareException, FirmwareUploadException, UsbException, ZtexDescriptorException, DeviceLostException {
|
public long uploadFirmware ( String ihxFileName, boolean force ) throws IncompatibleFirmwareException, FirmwareUploadException, UsbException, InvalidFirmwareException, DeviceLostException {
|
// load the ihx file
|
// load the ihx file
|
ZtexIhxFile1 ihxFile;
|
ZtexIhxFile1 ihxFile;
|
try {
|
try {
|
ihxFile = new ZtexIhxFile1( ihxFileName );
|
ihxFile = new ZtexIhxFile1( ihxFileName );
|
}
|
}
|
| Line 250... |
Line 426... |
|
|
return time;
|
return time;
|
}
|
}
|
|
|
// ******* resetEzUsb **********************************************************
|
// ******* resetEzUsb **********************************************************
|
public void resetEzUsb () throws IncompatibleFirmwareException, FirmwareUploadException, UsbException, ZtexDescriptorException, DeviceLostException {
|
/**
|
|
* Resets the EZ-USB and manages the renumeration process.
|
|
* <p>
|
|
* After the reset the renumeration starts.
|
|
* During this process the device disappears from the bus and a new one
|
|
* occurs which will be assigned to this class automatically (instead of the disappeared one).
|
|
* @throws FirmwareUploadException If an error occurred while attempting to upload the firmware.
|
|
* @throws UsbException if a communication error occurs.
|
|
* @throws InvalidFirmwareException if ZTEX descriptor 1 is not available.
|
|
* @throws DeviceLostException if a device went lost after renumeration.
|
|
*/
|
|
public void resetEzUsb () throws FirmwareUploadException, UsbException, InvalidFirmwareException, DeviceLostException {
|
// scan the bus for comparison
|
// scan the bus for comparison
|
findOldDevices();
|
findOldDevices();
|
|
|
// reset the EZ-USB
|
// reset the EZ-USB
|
EzUsb.reset(handle,true);
|
EzUsb.reset(handle,true);
|
try {
|
try {
|
EzUsb.reset(handle,false); // error (may caused re-numeration) can be ignored
|
EzUsb.reset(handle,false); // error (may caused by re-numeration) can be ignored
|
}
|
}
|
catch ( FirmwareUploadException e ) {
|
catch ( FirmwareUploadException e ) {
|
}
|
}
|
|
|
// find and init new device
|
// find and init new device
|
initNewDevice( "Device lost after resetting the EZ-USB" );
|
initNewDevice( "Device lost after resetting the EZ-USB" );
|
}
|
}
|
|
|
// ******* toString ************************************************************
|
// ******* toString ************************************************************
|
|
/**
|
|
* Returns a lot of useful information about the corresponding device.
|
|
* @return a lot of useful information about the corresponding device.
|
|
*/
|
public String toString () {
|
public String toString () {
|
return dev.toString();
|
return dev.toString();
|
}
|
}
|
|
|
}
|
}
|
