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========================================================================
UHD - Device Identification Notes
========================================================================
.. contents:: Table of Contents
------------------------------------------------------------------------
Identifying USRPs
------------------------------------------------------------------------
Every device has several ways of identifying it on the host system:
* **Serial:** A globally unique identifier.
* **Address:** A unique identifier on a network.
* **Name:** An optional user-set identifier.
The address is only applicable for network-based devices.
See the USRP2 application notes.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Device discovery via command line
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
A "find devices" utility application comes bundled with the UHD.
The find devices application will search for all devices on the host system and print the results.
::
uhd_find_devices
Device address arguments can be supplied to narrow the scope of the search.
::
uhd_find_devices --args="type=usrp1"
-- OR --
uhd_find_devices --args="serial=12345678"
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Device discovery through the API
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The device::find() API call searches for devices and returns a list of discovered devices.
::
uhd::device_addr_t hint; //an empty hint discovers all devices
uhd::device_addrs_t dev_addrs = uhd::device::find(hint);
The hint argument can be populated to narrow the scope of the search.
::
uhd::device_addr_t hint;
hint["type"] = "usrp1";
uhd::device_addrs_t dev_addrs = uhd::device::find(hint);
-- OR --
uhd::device_addr_t hint;
hint["serial"] = "12345678";
uhd::device_addrs_t dev_addrs = uhd::device::find(hint);
------------------------------------------------------------------------
Naming a USRP
------------------------------------------------------------------------
For convenience purposes, users may assign a custom name to their USRPs.
The USRP can then be identified via name, rather than a difficult to remember serial or address.
A name has the following properties:
* is composed of ASCII characters
* is between 0 and 20 characters
* is not required to be unique
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Set a custom name
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Run the following commands:
::
cd <prefix>/share/uhd/utils
./usrp_burn_mb_eeprom --args=<optional device args> --key=name --val=lab1_xcvr
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Discovery via name
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The keyword "name" can be used to narrow the scope of the search.
Example with the find devices utility:
::
uhd_find_devices --args="name=lab1_xcvr"
-- OR --
uhd_find_devices --args="type=usrp1, name=lab1_xcvr"
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