/*!
intraffic -- example showing how the EZ-USB FIFO interface is used on ZTEX USB-FPGA Module 1.15b
Copyright (C) 2009-2014 ZTEX GmbH.
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/.
!*/
import java.io.*;
import java.util.*;
import ch.ntb.usb.*;
import ztex.*;
// *****************************************************************************
// ******* ParameterException **************************************************
// *****************************************************************************
// Exception the prints a help message
class ParameterException extends Exception {
public final static String helpMsg = new String (
"Parameters:\n"+
" -d Device Number (default: 0)\n" +
" -f Force uploads\n" +
" -p Print bus info\n" +
" -w Enable certain workarounds\n"+
" -h This help" );
public ParameterException (String msg) {
super( msg + "\n" + helpMsg );
}
}
// *****************************************************************************
// ******* USBReader ***********************************************************
// *****************************************************************************
class UsbReader extends Thread {
private final int bufNum = 8;
public final int bufSize = 512*1024;
public byte[][] buf = new byte[bufNum][];
public int[] bufBytes = new int[bufNum];
private int readCount = -1;
private int getCount = -1;
public boolean terminate = false;
private Ztex1v1 ztex;
public UsbReader ( Ztex1v1 p_ztex ) {
super ();
ztex = p_ztex;
for (int i=0; i= readCount) {
try {
sleep(1);
}
catch ( InterruptedException e) {
}
}
return getCount % bufNum;
}
public void reset () {
getCount = readCount + 1;
}
public void run() {
setPriority(MAX_PRIORITY);
// claim interface 0
try {
ztex.trySetConfiguration ( 1 );
ztex.claimInterface ( 0 );
}
catch ( Exception e) {
System.out.println("Error: "+e.getLocalizedMessage() );
System.exit(2);
}
// reader loop
while ( !terminate ) {
readCount += 1;
while ( readCount - bufNum >= getCount ) {
try {
sleep(1);
}
catch ( InterruptedException e) {
}
}
int i = readCount % bufNum;
bufBytes[i] = LibusbJava.usb_bulk_read(ztex.handle(), 0x82, buf[i], bufSize, 1000);
// System.out.println("Buffer " + i +": read " + bufBytes[i] + " bytes");
}
// release interface 0
ztex.releaseInterface( 0 );
}
}
// *****************************************************************************
// ******* Test0 ***************************************************************
// *****************************************************************************
class InTraffic extends Ztex1v1 {
// ******* InTraffic **************************************************************
// constructor
public InTraffic ( ZtexDevice1 pDev ) throws UsbException {
super ( pDev );
}
// ******* main ****************************************************************
public static void main (String args[]) {
int devNum = 0;
boolean force = false;
boolean workarounds = false;
try {
// init USB stuff
LibusbJava.usb_init();
// scan the USB bus
ZtexScanBus1 bus = new ZtexScanBus1( ZtexDevice1.ztexVendorId, ZtexDevice1.ztexProductId, true, false, 1);
if ( bus.numberOfDevices() <= 0) {
System.err.println("No devices found");
System.exit(0);
}
// scan the command line arguments
for (int i=0; i=args.length) throw new Exception();
devNum = Integer.parseInt( args[i] );
}
catch (Exception e) {
throw new ParameterException("Device number expected after -d");
}
}
else if ( args[i].equals("-f") ) {
force = true;
}
else if ( args[i].equals("-p") ) {
bus.printBus(System.out);
System.exit(0);
}
else if ( args[i].equals("-p") ) {
bus.printBus(System.out);
System.exit(0);
}
else if ( args[i].equals("-w") ) {
workarounds = true;
}
else if ( args[i].equals("-h") ) {
System.err.println(ParameterException.helpMsg);
System.exit(0);
}
else throw new ParameterException("Invalid Parameter: "+args[i]);
}
// create the main class
InTraffic ztex = new InTraffic ( bus.device(devNum) );
ztex.certainWorkarounds = workarounds;
// upload the firmware if necessary
if ( force || ! ztex.valid() || ! ztex.dev().productString().equals("intraffic example for UFM 1.15") ) {
System.out.println("Firmware upload time: " + ztex.uploadFirmware( "intraffic.ihx", force ) + " ms");
force = true;
}
// upload the bitstream if necessary
if ( force || ! ztex.getFpgaConfiguration() ) {
System.out.println("FPGA configuration time: " + ztex.configureFpga( "fpga/intraffic.bit" , force ) + " ms");
}
// read the traffic
UsbReader reader = new UsbReader( ztex );
reader.start();
// EZ-USB FIFO test (controlled mode)
ztex.vendorCommand (0x60, "Set test mode", 0, 0);
reader.reset();
int vcurrent = -1;
for (int i=0; i<1000; i++) {
int j = reader.getBuffer();
int bb = reader.bufBytes[j];
byte[] b = reader.buf[j];
int current = vcurrent+1;
int lastwi = -1;
int aerrors = 0;
int ferrors = 0;
int errors = 0;
int prevErrors = 0;
for (int k=1; k 0 ) System.out.println(" 0b" + Integer.toBinaryString(current) );
if ( prevErrors == 1 )
ferrors +=1;
prevErrors = 0;
}
lastwi = 1;
// System.out.println(current);
}
// System.out.println(b[k]+" " +b[k+1]);
}
System.out.print("Buffer " + i + ": " + (errors-ferrors) + " errors, " + ferrors + " FIFO errors, " + aerrors + " alignment errors \r");
}
System.out.println();
// performance test (continous mode)
ztex.vendorCommand (0x60, "Set test mode", 1, 0);
reader.reset();
int words = 0;
int intSum = 0;
int intMax = 0;
int intAdj = 0;
int lastwi = -1;
for (int i=0; i<1000; i++) {
int j = reader.getBuffer();
int bb = reader.bufBytes[j];
byte[] b = reader.buf[j];
int current = vcurrent+1;
for (int k=1; k 0 && words > 0) {
intSum += it;
if ( it > intMax )
intMax = it;
}
words += 2;
vcurrent = current;
intAdj = 0;
}
lastwi = 1;
// System.out.println(current);
}
// System.out.println(b[k]+" " +b[k+1]);
}
System.out.print("Buffer " + i + ": " + Math.round(words*6000.0/(words+intSum))/100.0 + "MB/s, max. interrupt: " + Math.round(intMax/150.0)/100 + "ms \r");
}
System.out.println();
reader.terminate=true;
}
catch (Exception e) {
System.out.println("Error: "+e.getLocalizedMessage() );
}
}
}
