[usb-driver] / README
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
7824bbf6 12 * ISE Webpack 9.1SP3
0b50c513 13 * ISE Webpack 9.1SP2
14 * ISE Webpack 9.1SP1
54fc4508 15 * ISE Webpack 8.2SP3
0b50c513 16 * ISE Webpack 8.1SP3
3b1b5fa8 17 * ChipScope 9.1.03i
0b50c513 18 * ChipScope 9.1.02i
3b1b5fa8 19 * ChipScope 8.2.04i
54fc4508 20 * EDK 8.2.02i
5649925c 21 * EDK 8.1.02i
113af964 22
7606d470 23In addition to the XILINX USB and parallel cables, devices based on the FTDI
242232 serial converter chip are also experimentally supported. This includes
25devices like the Amontec JTAGkey(-Tiny).
113af964 27Build the library by calling `make'.
29To use this library you have to preload the library before starting impact:
31$ LD_PRELOAD=/path/to/libusb-driver.so impact
33$ export LD_PRELOAD=/path/to/libusb-driver.so (for sh shells)
34$ setenv LD_PRELOAD /path/to/libusb-driver.so (for csh shells)
35$ impact
fdd05738 36
45b9b80b 37The source for this library can be found at:
32e2af23 40The main website is located at:
54357994 43
44Notes for the USB cable
47To use the device as an ordinary user, put the following line in a new
fdd05738 48file in /etc/udev/rules.d/ and restart udev:
49ACTION=="add", BUS=="usb", SYSFS{idVendor}=="03fd", MODE="666"
979132fe 50
52If your cable does not have the ID 03fd:0008 in the output of lsusb,
53the initial firmware has not been loaded (loading it changes the
54product-ID from another value to 8). To load the firmware follow
55these steps:
c2e95a30 571. If you have no /etc/udev/rules.d/xusbdfwu.rules file, copy it from
58 /path/to/ISE/bin/lin/xusbdfwu.rules to /etc/udev/rules.d/xusbdfwu.rules
979132fe 59
602. Install the package containing /sbin/fxload from your linux distribution.
61 It is usually called "fxload"
633. copy the file /path/to/ISE/bin/lin/xusbdfwu.hex to /usr/share/xusbdfwu.hex
654. restart udev and re-plug the cable
54357994 66
68Notes for the parallel cable
71To access the parallel port from userspace, the kernel needs to be built with
72the features "Parallel port support" (CONFIG_PARPORT), "PC-style hardware"
73(CONFIG_PARPORT_PC) and "Support for user-space parallel port device drivers"
74(CONFIG_PPDEV) builtin or as modules. If these features are built as modules,
75they need to be loaded before using this library.
76These modules are called:
82To use the device as an ordinary user, put the user in the group 'lp'
6f766a61 83
cdc9c5bf 85If you have an almost compatible cable which works with other software but not
05e1bfcd 86with Impact, try adding -DFORCE_PC3_IDENT to the CFLAGS line in the Makefile.
87This enables a hack by Stefan Ziegenbalg to force detection of a parallel cable.
cdc9c5bf 88
6f766a61 90Parallel Cable IV is currently only supported in 'compatibility mode', as no
91attempt to configure the ECP registers is done by this library.
0c71f276 92
94If you get "Programming failed" or "DONE did not go high" when programming
95through the parallel cable with Impact 9.1, make sure to have the option "Use
96HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration
98If you are using batch mode, add the following line to your cmd file:
99setPreference -pref UseHighz:TRUE
7606d470 100(This problem also occurs on windows and when using the real windrvr in linux
101and is solved with the same workaround. Impact 8.2 is working fine with the same
0c71f276 102boards and designs)
7606d470 103
105Notes for FTDI 2232 based cables
108To build the driver with FTDI 2232 support, you need to have libftdi and
109the libftdi development package installed. On debian, you can install both
110by installing 'libftdi-dev'.
112To set-up the device:
1131. Find out the vendor and product id of your cable using lsusb:
114 Bus 003 Device 005: ID 0403:cff8 Future Technology Devices ...
115 ~~~~~~~~~
1172. Copy the sample libusb-driverrc to ~/.libusb-driverrc, edit it and replace
19020bc5 118 the vendor and product-id in the example file with the values provided in
119 the lsusb-output. You can also change the 'parallel port' which is mapped to
120 this cable. Impact sees the device at that port as a Parallel Cable III.
7606d470 121
1223. To use the device as an ordinary user, put the following line in a new file
123 in /etc/udev/rules.d/ and restart udev:
124 ACTION=="add", BUS=="usb", SYSFS{idVendor}=="0403", SYSFS{idProduct}=="cff8", MODE="666"
125 (replace the vendor and product id with your values)
dc587d11 127The support for FTDI 2232 based devices is experimental and they are currently
1830118e 128significantly slower than the other supported cables.
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