really support multiple parallel ports
[usb-driver] / README
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54357994 1This library emulates Jungo Windrvr USB and parallel port functions in
2userspace which are required by XILINX impact to access the Platform cable USB
3and Parallel Cable III.
4With this library it is possible to access the cables without loading a
5proprietary kernel module which breaks with every new kernel release. It uses
6f766a61 6the functionality provided by the libusb userspace library for USB access and
54357994 7the kernel interface at /dev/parport0 for parallel port access instead and
8should work on every kernel version which is supported by libusb and supports
9ppdev. It was written against impact from ISE Webpack 9.1SP1 and tested with
10the following software:
0b50c513 11
12 * ISE Webpack 9.1SP2
13 * ISE Webpack 9.1SP1
54fc4508 14 * ISE Webpack 8.2SP3
0b50c513 15 * ISE Webpack 8.1SP3
16 * ChipScope 9.1.02i
54fc4508 17 * EDK 8.2.02i
113af964 18
19Build the library by calling `make'.
20
21To use this library you have to preload the library before starting impact:
22
23$ LD_PRELOAD=/path/to/libusb-driver.so impact
24or
25$ export LD_PRELOAD=/path/to/libusb-driver.so (for sh shells)
26$ setenv LD_PRELOAD /path/to/libusb-driver.so (for csh shells)
27$ impact
fdd05738 28
45b9b80b 29The source for this library can be found at:
30http://cvs.zerfleddert.de/cgi-bin/viewcvs.cgi/usb-driver/
31
54357994 32
33Notes for the USB cable
34=======================
35
36To use the device as an ordinary user, put the following line in a new
fdd05738 37file in /etc/udev/rules.d/ and restart udev:
38ACTION=="add", BUS=="usb", SYSFS{idVendor}=="03fd", MODE="666"
979132fe 39
40
41If your cable does not have the ID 03fd:0008 in the output of lsusb,
42the initial firmware has not been loaded (loading it changes the
43product-ID from another value to 8). To load the firmware follow
44these steps:
45
c2e95a30 461. If you have no /etc/udev/rules.d/xusbdfwu.rules file, copy it from
47 /path/to/ISE/bin/lin/xusbdfwu.rules to /etc/udev/rules.d/xusbdfwu.rules
979132fe 48
492. Install the package containing /sbin/fxload from your linux distribution.
50 It is usually called "fxload"
51
523. copy the file /path/to/ISE/bin/lin/xusbdfwu.hex to /usr/share/xusbdfwu.hex
53
544. restart udev and re-plug the cable
54357994 55
56
57Notes for the parallel cable
58============================
59
60To access the parallel port from userspace, the kernel needs to be built with
61the features "Parallel port support" (CONFIG_PARPORT), "PC-style hardware"
62(CONFIG_PARPORT_PC) and "Support for user-space parallel port device drivers"
63(CONFIG_PPDEV) builtin or as modules. If these features are built as modules,
64they need to be loaded before using this library.
65These modules are called:
66parport
67parport_pc
68ppdev
69
70
71To use the device as an ordinary user, put the user in the group 'lp'
6f766a61 72
73
74Parallel Cable IV is currently only supported in 'compatibility mode', as no
75attempt to configure the ECP registers is done by this library.
0c71f276 76
77
78If you get "Programming failed" or "DONE did not go high" when programming
79through the parallel cable with Impact 9.1, make sure to have the option "Use
80HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration
81Preferences.
82If you are using batch mode, add the following line to your cmd file:
83setPreference -pref UseHighz:TRUE
84(This problem also occurs on windows and when using the real windrvr in linux and
85is solved with the same workaround. Impact 8.2 is working fine with the same
86boards and designs)
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