add the possibility to monitor the JTAG state machine

[usb-driver] / README

diff --git a/README b/README
index ae60eebdc5e973a112a752da71c46ad5feaf3d5a..dbb3b9dfa4302029451efe469f371c108dea6656 100644 (file)
--- a/README
+++ b/README
@@ -3,16 +3,26 @@ userspace which are required by XILINX impact to access the Platform cable USB
 and Parallel Cable III.
 With this library it is possible to access the cables without loading a
 proprietary kernel module which breaks with every new kernel release. It uses
 and Parallel Cable III.
 With this library it is possible to access the cables without loading a
 proprietary kernel module which breaks with every new kernel release. It uses

-the functions provided by the libusb userspace library for USB access and
+the functionality provided by the libusb userspace library for USB access and

 the kernel interface at /dev/parport0 for parallel port access instead and
 should work on every kernel version which is supported by libusb and supports
 ppdev. It was written against impact from ISE Webpack 9.1SP1 and tested with
 the following software:
 
 the kernel interface at /dev/parport0 for parallel port access instead and
 should work on every kernel version which is supported by libusb and supports
 ppdev. It was written against impact from ISE Webpack 9.1SP1 and tested with
 the following software:
 

+ * ISE Webpack 9.1SP3

  * ISE Webpack 9.1SP2
  * ISE Webpack 9.1SP1
  * ISE Webpack 9.1SP2
  * ISE Webpack 9.1SP1

+ * ISE Webpack 8.2SP3

  * ISE Webpack 8.1SP3
  * ISE Webpack 8.1SP3

+ * ChipScope 9.1.03i

  * ChipScope 9.1.02i
  * ChipScope 9.1.02i

+ * ChipScope 8.2.04i
+ * EDK 8.2.02i
+ * EDK 8.1.02i
+
+In addition to the XILINX USB and parallel cables, devices based on the FTDI
+2232 serial converter chip are also experimentally supported. This includes
+devices like the Amontec JTAGkey(-Tiny).

 
 Build the library by calling `make'.
 
 
 Build the library by calling `make'.
 


@@ -24,6 +34,12 @@ $ export LD_PRELOAD=/path/to/libusb-driver.so  (for sh shells)
 $ setenv LD_PRELOAD /path/to/libusb-driver.so  (for csh shells)
 $ impact
 
 $ setenv LD_PRELOAD /path/to/libusb-driver.so  (for csh shells)
 $ impact
 

+The source for this library can be found at:
+http://cvs.zerfleddert.de/cgi-bin/viewcvs.cgi/usb-driver/
+
+The main website is located at:
+http://www.rmdir.de/~michael/xilinx/
+

 
 Notes for the USB cable
 =======================
 
 Notes for the USB cable
 =======================


@@ -64,3 +80,49 @@ ppdev
 
 
 To use the device as an ordinary user, put the user in the group 'lp'
 
 
 To use the device as an ordinary user, put the user in the group 'lp'

+
+
+If you have an almost compatible cable which works with other software but not
+with Impact, try adding -DFORCE_PC3_IDENT to the CFLAGS line in the Makefile.
+This enables a hack by Stefan Ziegenbalg to force detection of a parallel cable.
+
+
+Parallel Cable IV is currently only supported in 'compatibility mode', as no
+attempt to configure the ECP registers is done by this library.
+
+
+If you get "Programming failed" or "DONE did not go high" when programming
+through the parallel cable with Impact 9.1, make sure to have the option "Use
+HIGHZ instead of BYPASS" enabled in Edit -> Preferences -> iMPACT Configuration
+Preferences.
+If you are using batch mode, add the following line to your cmd file:
+setPreference -pref UseHighz:TRUE
+(This problem also occurs on windows and when using the real windrvr in linux
+and is solved with the same workaround. Impact 8.2 is working fine with the same
+boards and designs)
+
+
+Notes for FTDI 2232 based cables
+================================
+
+To build the driver with FTDI 2232 support, you need to have libftdi and
+the libftdi development package installed. On debian, you can install both
+by installing 'libftdi-dev'.
+
+To set-up the device:
+1. Find out the vendor and product id of your cable using lsusb:
+   Bus 003 Device 005: ID 0403:cff8 Future Technology Devices ...
+                          ~~~~~~~~~
+
+2. Copy the sample libusb-driverrc to ~/.libusb-driverrc, edit it and replace
+   the vendor and product-id in the example file with the values from provided
+   in the lsusb-output. You can also change the 'parallel port' which is mapped
+   to this cable. Impact sees the device at that port as a Parallel Cable III.
+
+3. To use the device as an ordinary user, put the following line in a new file
+   in /etc/udev/rules.d/ and restart udev:
+   ACTION=="add", BUS=="usb", SYSFS{idVendor}=="0403", SYSFS{idProduct}=="cff8", MODE="666"
+   (replace the vendor and product id with your values)
+
+The support for FTDI 2232 based devices is experimental and they are currently
+significantly slower than the other supported cables.