README.devices: add an UT-D04 on Windows section (libwdi and hidapi)

[libsigrok.git] / README.devices

diff --git a/README.devices b/README.devices
index 6d139aa9af0b88b31f7e8f028ed6a12f054abe84..d2f4db8ca1bd973432e04456bc93e54e48fc5a27 100644 (file)
--- a/README.devices
+++ b/README.devices
@@ -288,6 +288,19 @@ rules shipped by the system will be broken.
 Please consult the udev docs for details.
 
 
+Assigning drivers to devices (Windows, Zadig)
+---------------------------------------------
+
+On Windows systems it may be necessary to assign drivers to devices
+before libusb based applications can access them. It may be necessary
+to re-run this driver assignment after firmware upload in case the
+device changes its USB identification as a consequence of loading the
+firmware image.
+
+The https://sigrok.org/wiki/Windows wiki page discusses this subject,
+and other platform specific aspects.
+
+
 Non-default drivers for commodity chips
 ---------------------------------------
 
@@ -390,6 +403,18 @@ See also: http://erste.de/UT61/index.html
   done
 
 
+UNI-T UT-D04 cable issue on Windows
+-----------------------------------
+
+There have been reports that CH9325 based cables are not detected on
+Windows out of the box when they are assigned to libwdi drivers. Though
+they may be usable in that case when the USB address is manually specified.
+This can happen when some "USB to serial" driver is assigned which does not
+provide a genuine COM port that enumerates naturally. Manually assigning a
+"USB input device" driver can improve HIDAPI compatibility and make the
+cable show up in sigrok's serial port enumeration.
+
+
 Enabling multimeter / data logger measurement output
 ----------------------------------------------------
 
@@ -500,7 +525,7 @@ a protocol description and use of the protocol depends on the firmware's
 availability at the user's site. Which then would allow to capture to
 DRAM at high rates without the communication bottleneck, before the data
 gets communicated to the PC after the acquisition has completed. Compare
-the native sigrok supoprt for Asix Sigma.
+the native sigrok support for Asix Sigma.
 
 
 ChronoVu LA8/LA16 USB VID/PIDs