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doc: mention serial-over-HID in README.devices (UT-D09 cable)

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Gerhard Sittig 2017-03-18 14:08:44 +01:00 committed by Uwe Hermann
parent 6e407e9850
commit f736691d13
1 changed files with 7 additions and 1 deletions
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README.devices
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@ -130,7 +130,11 @@ Specifying serial ports
-----------------------
Many devices supported by libsigrok use serial port based cables (real RS232
or USB-to-serial ones) to connect to a PC.
or USB-to-serial ones, CDC class) to connect to a PC. These serial cables are
supported by the libserialport library. Some vendors prefer to use HID chips
instead of CDC chips in their serial cables. These cables can get supported
by means of the hidapi library. Note that each chip type requires specific
support in the libsigrok library.
For all these devices, you need to specify the serial port they are connected
to (e.g. using the 'conn' option in sigrok-cli). It is not possible to scan
@ -139,6 +143,7 @@ for such devices without specifying a serial port.
Example:
$ sigrok-cli --driver <somedriver>:conn=/dev/ttyUSB0 ...
$ sigrok-cli --driver <somedriver>:conn=hid/cp2110 ...
The following drivers/devices require a serial port specification. Some of
the drivers implement a default for the connection. Some of the drivers
@ -290,6 +295,7 @@ ship with different PC connectivity cables:
- UT-D02 (RS232 cable)
- UT-D04 (USB/HID cable with Hoitek HE2325U chip, USB VID/PID 04fa:2490)
- UT-D04 (USB/HID cable with WCH CH9325 chip, USB VID/PID 1a86:e008)
- UT-D09 (USB/HID cable with SiL CP2110 chip, USB VID/PID 10c4:ea80)
The above cables are all physically compatible (same IR connector shape)
with all/most currently known UNI-T multimeters. For example, you can