OpenCores
URL https://opencores.org/ocsvn/usb_fpga_1_11/usb_fpga_1_11/trunk

Subversion Repositories usb_fpga_1_11

[/] [usb_fpga_1_11/] [trunk/] [java/] [ztex/] [EzUsb.java] - Blame information for rev 5

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 2 ZTEX
/*!
2 5 ZTEX
   Java host software API of ZTEX EZ-USB FX2 SDK
3
   Copyright (C) 2009-2011 ZTEX GmbH.
4 2 ZTEX
   http://www.ztex.de
5
 
6
   This program is free software; you can redistribute it and/or modify
7
   it under the terms of the GNU General Public License version 3 as
8
   published by the Free Software Foundation.
9
 
10
   This program is distributed in the hope that it will be useful, but
11
   WITHOUT ANY WARRANTY; without even the implied warranty of
12
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
   General Public License for more details.
14
 
15
   You should have received a copy of the GNU General Public License
16
   along with this program; if not, see http://www.gnu.org/licenses/.
17
!*/
18
 
19
package ztex;
20
 
21
import java.io.*;
22
import java.util.*;
23
 
24
import ch.ntb.usb.*;
25
 
26
/**
27
  * Provides methods for uploading firmware to Cypress EZ-USB devices.
28
  */
29
public class EzUsb {
30
// ******* reset **************************************************************
31
/**
32
  * Controls the reset state of a Cypress EZ-USB device.
33
  * @param handle The handle of the device.
34
  * @param r The reset state (true means reset).
35
  * @throws FirmwareUploadException if an error occurred while attempting to control the reset state.
36
  */
37 5 ZTEX
    public static void reset ( long handle, boolean r ) throws FirmwareUploadException {
38 2 ZTEX
        byte buffer[] = { (byte) (r ? 1 : 0) };
39
        int k = LibusbJava.usb_control_msg(handle, 0x40, 0xA0, 0xE600, 0, buffer, 1, 1000);   // upload j bytes
40
        if ( k<0 )
41
            throw new FirmwareUploadException( LibusbJava.usb_strerror() + ": unable to set reset="+buffer[0] );
42
        else if ( k!=1 )
43
            throw new FirmwareUploadException( "Unable to set reset="+buffer[0] );
44
        try {
45
            Thread.sleep( r ? 50 : 400 );       // give the firmware some time for initialization
46
        }
47
            catch ( InterruptedException e ) {
48
        }
49
    }
50
 
51
// ******* uploadFirmware ******************************************************
52
/**
53
  * Uploads the Firmware to a Cypress EZ-USB device.
54
  * @param handle The handle of the device.
55
  * @param ihxFile The firmware image.
56 3 ZTEX
  * @return the upload time in ms.
57 2 ZTEX
  * @throws FirmwareUploadException if an error occurred while attempting to upload the firmware.
58
  */
59 5 ZTEX
    public static long uploadFirmware (long handle, IhxFile ihxFile ) throws FirmwareUploadException {
60 2 ZTEX
        final int transactionBytes = 256;
61
        byte[] buffer = new byte[transactionBytes];
62
 
63
        reset( handle, true );  // reset = 1
64
 
65
        long t0 = new Date().getTime();
66
        int j = 0;
67
        for ( int i=0; i<=ihxFile.ihxData.length; i++ ) {
68
            if ( i >= ihxFile.ihxData.length || ihxFile.ihxData[i] < 0 || j >=transactionBytes ) {
69
                if ( j > 0 ) {
70
                    int k = LibusbJava.usb_control_msg(handle, 0x40, 0xA0, i-j, 0, buffer, j, 1000);   // upload j bytes
71
                    if ( k<0 )
72
                        throw new FirmwareUploadException(LibusbJava.usb_strerror());
73
                    else if ( k!=j )
74
                        throw new FirmwareUploadException();
75
                    try {
76
                        Thread.sleep( 1 );      // to avoid package loss
77
                    }
78
                        catch ( InterruptedException e ) {
79
                    }
80
                }
81
                j = 0;
82
            }
83
 
84
            if ( i < ihxFile.ihxData.length && ihxFile.ihxData[i] >= 0 && ihxFile.ihxData[i] <= 255 ) {
85
                buffer[j] = (byte) ihxFile.ihxData[i];
86
                j+=1;
87
            }
88
        }
89
        long t1 = new Date().getTime();
90
 
91
        try {
92
            EzUsb.reset(handle,false);          // error (may caused re-numeration) can be ignored
93
        }
94
        catch ( FirmwareUploadException e ) {
95
        }
96
        return t1 - t0;
97
    }
98
}
99
 

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.