-----------------------
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. Bluetooth connected devices may be supported
+as well when they communicate by means of RFCOMM channels, or one of the
+implemented BLE notification/indication approaches, and one of the Bluetooth
+supporting platforms is used.
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
Example:
$ sigrok-cli --driver <somedriver>:conn=/dev/ttyUSB0 ...
+ $ sigrok-cli --driver <somedriver>:conn=hid/cp2110 ...
+ $ sigrok-cli --driver <somedriver>:conn=bt/rfcomm/01-23-45-67-89-ab ...
+
+Formal syntax for serial communication:
+
+ - COM ports (RS232, USB CDC):
+ conn=<com-port>
+ - USB HID cables:
+ conn=hid[/<chip>]
+ conn=hid[/<chip>]/usb=<bus>.<dev>[.<if>]
+ conn=hid[/<chip>]/raw=<path>
+ conn=hid[/<chip>]/sn=<serno>
+ chip can be: ch9325, cp2110
+ path may contain slashes
+ path and serno are "greedy" (span to the end of the spec)
+ - Bluetooth Classic and Bluetooth Low Energy (BLE):
+ conn=bt/<conn>/<addr>
+ conn can be: rfcomm, ble122, nrf51, cc254x
+ addr can be "dense" or separated, bt/cc254x/0123456789ab or
+ bt/rfcomm/11-22-33-44-55-66 or bt/ble122/88:6b:12:34:56:78
+ (note that colons may not be available when the conn= spec is taken
+ from a string that separates fields by colon, e.g. in the "--driver
+ <name>:conn=<spec>" example, that is why the dense form and the use
+ of dashes for separation are supported)
The following drivers/devices require a serial port specification. Some of
the drivers implement a default for the connection. Some of the drivers
- serial-lcr (including all subdrivers)
- teleinfo
- tondaj-sl-814
+ - uni-t-dmm (all -ser subdrivers)
+ - uni-t-ut32x
The following drivers/devices do not require a serial port specification:
- rigol-ds (USBTMC or TCP)
- saleae-logic16
- sysclk-lwla
- - uni-t-dmm (including all subdrivers)
- - uni-t-ut32x
- - victor-dmm
+ - uni-t-dmm (all non -ser subdrivers)
- yokogawa-dlm (USBTMC or TCP)
- zeroplus-logic-cube
-Beyond strict serial communication over COM ports (e.g. /dev/ttyUSB0), the
+Beyond strict serial communication over COM ports (discussed above), the
conn= property can also address specific USB devices, as well as specify TCP
or VXI communication parameters. See these examples:
- 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-D07 (Bluetooth adapter, ISSC BL79 BLETR chip)
+ - 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
- Brymen BM257s: Press HOLD during power-on.
- Digitek DT4000ZC: Briefly press the "RS232" button.
- EEVBlog 121GW: Hold "1ms PEAK" until the "BT" indicator is shown.
+ - ES51919 based LCR meters (DER EE DE-5000, PeakTech 2170, UNI-T UT612):
+ Press the button with the "RS232" or "USB" or "PC link" label (usually
+ the "up" cursor button).
- Gossen Metrawatt Metrahit 1x/2x devices, driver gmc-mh-1x-2x-rs232:
- Power on the device with the "DATA" button pressed.
- Metrahit 2x devices must be configured for the respective interface type.
projects / libsigrok.git / blobdiff