README.Windows: clarify the kernel drivers installation 06/2506/3
authorPaul Fertser <>
Tue, 27 Jan 2015 10:37:51 +0000 (13:37 +0300)
committerPaul Fertser <>
Sun, 17 May 2015 20:15:13 +0000 (21:15 +0100)
HID and composite devices need to be mentioned explicitly due to
windows oddities.

Change-Id: I7cdbaa50c60ceb1950c934e0249986d46c875cff
Signed-off-by: Paul Fertser <>
Tested-by: jenkins
Reviewed-by: Xiaofan <>
Reviewed-by: Andreas Fritiofson <>

index 9cdd55c5c2236b53de19bbc2384fd7fe3a893a9f..6c616f38accf41688276baa60095ae2239ef87e6 100644 (file)
@@ -7,6 +7,9 @@ recommended as it doesn't provide enough C99 compatibility).
 Alternatively, one can cross-compile it using MinGW-w64 on a *nix
 host. See README for the generic instructions.
+Also, the MSYS2 project provides both ready-made binaries and an easy
+way to self-compile from their software repository out of the box.
 Native MinGW-w64/MSYS compilation
@@ -22,13 +25,21 @@ installation.
 USB adapters
-You usually need to have WinUSB.sys (or libusbK.sys) driver installed
-for a USB-based adapter. Some vendor software (e.g. for ST-LINKv2)
-does it on its own. For the other cases the easiest way to assign
-WinUSB to a device is to use the latest Zadig installer:
+For the adapters that use a HID-based protocol, e.g. CMSIS-DAP, you do
+not need to perform any additional configuration.
+For all the others you usually need to have WinUSB.sys (or
+libusbK.sys) driver installed. Some vendor software (e.g. for
+ST-LINKv2) does it on its own. For the other cases the easiest way to
+assign WinUSB to a device is to use the latest Zadig installer:
+When using a composite USB device, it's often necessary to assign
+WinUSB.sys to the composite parent instead of the specific
+interface. To do that one needs to activate an advanced option in the
+Zadig installer.
 For the old drivers that use libusb-0.1 API you might need to link
 against libusb-win32 headers and install the corresponding driver with

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