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1 | This library emulates Jungo Windrvr USB and parallel port functions in |
2 | userspace which are required by XILINX impact to access the Platform cable USB |
3 | and Parallel Cable III. |
4 | With this library it is possible to access the cables without loading a |
5 | proprietary kernel module which breaks with every new kernel release. It uses |
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6 | the functionality provided by the libusb userspace library for USB access and |
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7 | the kernel interface at /dev/parport0 for parallel port access instead and |
8 | should work on every kernel version which is supported by libusb and supports |
9 | ppdev. It was written against impact from ISE Webpack 9.1SP1 and tested with |
10 | the following software: |
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11 | |
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12 | * ISE Webpack 9.1SP3 |
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13 | * ISE Webpack 9.1SP2 |
14 | * ISE Webpack 9.1SP1 |
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15 | * ISE Webpack 8.2SP3 |
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16 | * ISE Webpack 8.1SP3 |
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17 | * ChipScope 9.1.03i |
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18 | * ChipScope 9.1.02i |
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19 | * ChipScope 8.2.04i |
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20 | * EDK 8.2.02i |
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21 | |
22 | Build the library by calling `make'. |
23 | |
24 | To use this library you have to preload the library before starting impact: |
25 | |
26 | $ LD_PRELOAD=/path/to/libusb-driver.so impact |
27 | or |
28 | $ export LD_PRELOAD=/path/to/libusb-driver.so (for sh shells) |
29 | $ setenv LD_PRELOAD /path/to/libusb-driver.so (for csh shells) |
30 | $ impact |
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31 | |
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32 | The source for this library can be found at: |
33 | http://cvs.zerfleddert.de/cgi-bin/viewcvs.cgi/usb-driver/ |
34 | |
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35 | |
36 | Notes for the USB cable |
37 | ======================= |
38 | |
39 | To use the device as an ordinary user, put the following line in a new |
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40 | file in /etc/udev/rules.d/ and restart udev: |
41 | ACTION=="add", BUS=="usb", SYSFS{idVendor}=="03fd", MODE="666" |
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42 | |
43 | |
44 | If your cable does not have the ID 03fd:0008 in the output of lsusb, |
45 | the initial firmware has not been loaded (loading it changes the |
46 | product-ID from another value to 8). To load the firmware follow |
47 | these steps: |
48 | |
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49 | 1. If you have no /etc/udev/rules.d/xusbdfwu.rules file, copy it from |
50 | /path/to/ISE/bin/lin/xusbdfwu.rules to /etc/udev/rules.d/xusbdfwu.rules |
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51 | |
52 | 2. Install the package containing /sbin/fxload from your linux distribution. |
53 | It is usually called "fxload" |
54 | |
55 | 3. copy the file /path/to/ISE/bin/lin/xusbdfwu.hex to /usr/share/xusbdfwu.hex |
56 | |
57 | 4. restart udev and re-plug the cable |
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58 | |
59 | |
60 | Notes for the parallel cable |
61 | ============================ |
62 | |
63 | To access the parallel port from userspace, the kernel needs to be built with |
64 | the features "Parallel port support" (CONFIG_PARPORT), "PC-style hardware" |
65 | (CONFIG_PARPORT_PC) and "Support for user-space parallel port device drivers" |
66 | (CONFIG_PPDEV) builtin or as modules. If these features are built as modules, |
67 | they need to be loaded before using this library. |
68 | These modules are called: |
69 | parport |
70 | parport_pc |
71 | ppdev |
72 | |
73 | |
74 | To use the device as an ordinary user, put the user in the group 'lp' |
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75 | |
76 | |
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77 | If you have an almost compatible cable which works with other software but not |
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78 | with Impact, try adding -DFORCE_PC3_IDENT to the CFLAGS line in the Makefile. |
79 | This enables a hack by Stefan Ziegenbalg to force detection of a parallel cable. |
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80 | |
81 | |
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82 | Parallel Cable IV is currently only supported in 'compatibility mode', as no |
83 | attempt to configure the ECP registers is done by this library. |
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84 | |
85 | |
86 | If you get "Programming failed" or "DONE did not go high" when programming |
87 | through the parallel cable with Impact 9.1, make sure to have the option "Use |
88 | HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration |
89 | Preferences. |
90 | If you are using batch mode, add the following line to your cmd file: |
91 | setPreference -pref UseHighz:TRUE |
92 | (This problem also occurs on windows and when using the real windrvr in linux and |
93 | is solved with the same workaround. Impact 8.2 is working fine with the same |
94 | boards and designs) |