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[/] [usb_fpga_1_2/] [trunk/] [examples/] [usb-fpga-1.15/] [1.15b/] [mmio/] [UCEcho.java] - Rev 8
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/*! mmio -- Memory mapped I/O example for ZTEX USB-FPGA Module 1.15b Copyright (C) 2009-2011 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 <number> 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 ); } } // ***************************************************************************** // ******* Test0 *************************************************************** // ***************************************************************************** class UCEcho extends Ztex1v1 { // ******* UCEcho ************************************************************** // constructor public UCEcho ( ZtexDevice1 pDev ) throws UsbException { super ( pDev ); } // ******* echo **************************************************************** // writes a string to Endpoint 4, reads it back from Endpoint 2 and writes the output to System.out public void echo ( String input ) throws UsbException { byte buf[] = input.getBytes(); int i = LibusbJava.usb_bulk_write(handle(), 0x04, buf, buf.length, 1000); if ( i<0 ) throw new UsbException("Error sending data: " + LibusbJava.usb_strerror()); System.out.println("Send "+i+" bytes: `"+input+"'" ); try { Thread.sleep( 10 ); } catch ( InterruptedException e ) { } buf = new byte[1024]; i = LibusbJava.usb_bulk_read(handle(), 0x82, buf, 1024, 1000); if ( i<0 ) throw new UsbException("Error receiving data: " + LibusbJava.usb_strerror()); System.out.println("Read "+i+" bytes: `"+new String(buf,0,i)+"'" ); } // ******* 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; i++ ) { if ( args[i].equals("-d") ) { i++; try { if (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 UCEcho ztex = new UCEcho ( bus.device(devNum) ); ztex.certainWorkarounds = workarounds; // upload the firmware if necessary if ( force || ! ztex.valid() || ! ztex.dev().productString().equals("ucecho example for UFM 1.15") ) { System.out.println("Firmware upload time: " + ztex.uploadFirmware( "ucecho.ihx", force ) + " ms"); } // upload the bitstream if necessary if ( force || ! ztex.getFpgaConfiguration() ) { System.out.println("FPGA configuration time: " + ztex.configureFpga( "fpga/ucecho.bit" , force ) + " ms"); } // claim interface 0 ztex.trySetConfiguration ( 1 ); ztex.claimInterface ( 0 ); // read string from stdin and write it to USB device String str = ""; BufferedReader reader = new BufferedReader( new InputStreamReader( System.in ) ); while ( ! str.equals("quit") ) { System.out.print("Enter a string or `quit' to exit the program: "); str = reader.readLine(); if ( ! str.equals("") ) ztex.echo(str); System.out.println(""); } // release interface 0 ztex.releaseInterface( 0 ); } catch (Exception e) { System.out.println("Error: "+e.getLocalizedMessage() ); } } }
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