make it possible to specify the USB bus

[usb-driver] / README

diff --git a/README b/README
index a86a46ac536adc098c8c9cebff6e3693d9b0fb68..f9b6cec9bb558abf9466d6f9f51b914710f53cc4 100644 (file)
--- a/README
+++ b/README
@@ -9,11 +9,13 @@ 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:
 
 ppdev. It was written against impact from ISE Webpack 9.1SP1 and tested with
 the following software:
 

+ * ISE Webpack 9.2SP1

  * ISE Webpack 9.1SP3
  * ISE Webpack 9.1SP2
  * ISE Webpack 9.1SP1
  * ISE Webpack 8.2SP3
  * ISE Webpack 8.1SP3
  * ISE Webpack 9.1SP3
  * ISE Webpack 9.1SP2
  * ISE Webpack 9.1SP1
  * ISE Webpack 8.2SP3
  * ISE Webpack 8.1SP3

+ * ChipScope 9.2.01i

  * ChipScope 9.1.03i
  * ChipScope 9.1.02i
  * ChipScope 8.2.04i
  * ChipScope 9.1.03i
  * ChipScope 9.1.02i
  * ChipScope 8.2.04i


@@ -72,6 +74,14 @@ these steps:
 4. restart udev and re-plug the cable
 
 
 4. restart udev and re-plug the cable
 
 

+If you have multiple cables connected, you can specify the cable to use
+in the XILINX_USB_DEV environment-variable as "bus:device".
+These identifiers are available in the output of lsusb:
+Bus 001 Device 004: ID 03fd:0008 Xilinx, Inc.
+    ^^^        ^^^
+To use this cable, set the XILINX_USB_DEV variable to "001:004".
+
+

 Notes for the parallel cable
 ============================
 
 Notes for the parallel cable
 ============================
 


@@ -133,3 +143,12 @@ To set-up the device:
 
 The support for FTDI 2232 based devices is experimental and they are currently
 significantly slower than the other supported cables.
 
 The support for FTDI 2232 based devices is experimental and they are currently
 significantly slower than the other supported cables.

+
+
+Locked cables
+=============
+
+If you get the message 'The cable is being used by another application.' from
+impact, try running the following command:
+
+echo -e 'cleancablelock\nexit' | impact -batch