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/*! \page page_configuration Configuring Devices and Streamers
\section config_devaddr Device Configuration through address string
The address string for a device is mainly used to identify a device
(see also \ref page_identification), but it can also be used to propagate
settings to the device.
As an example, say you run `rx_samples_to_file` with the following settings:
$ rx_samples_to_file --args type=b200,master_clock_rate=16e6
This will first use the `type` flag to search your system for connected B200
or B210 devices, as described on \ref page_identification. Once it has found
one of these, it will connect to it and pass the `master_clock_rate=16e6` option
to the device initialization (in this case, it will set the master clock rate
to 16 MHz as described on \ref b200_mcr).
The following table lists the configuration options you can pass as device
arguments. Also check out the individual device manuals for more information
and possible more options.
Key | Description | Supported Devices | Example Value
---------------------|------------------------------------------------------------------------------|-------------------|---------------------
blank_eeprom | *Caution!* Having this key will erase the EEPROM and can damage your device! | X3x0 | blank_eeprom=1
fpga | Provide alternative FPGA bitfile | All USB Devices, X3x0 (PCIe only), All embedded devices | fpga=/path/to/bitfile.bit
fw | Provide alternative firmware | All USB Devices, X3x0 | fw=/path/to/fw.bin
ignore-cal-file | Ignores existing device calibration files | All Devices with cal-file support| See \ref ignore_cal_file
master_clock_rate | Master Clock Rate in Hz | X3x0, B2x0, B1x0, E3x0, E1x0 | master_clock_rate=16e6
mcr | Override master clock rate settings (see \ref usrp1_hw_extclk) | USRP1 | mcr=52e6
niusrprpc_port | RPC Port for NI USRP RIO | X3x0 | niusrprpc_port=5445
system_ref_rate | Reference Clock Rate in Hz | X3x0 | system_ref_rate=10e6
In addition, many of the streaming-related options can be set per-device at configuration time.
See \ref config_stream_args and \ref page_transport for more details.
\section config_subdev Specifying the Subdevice
A subdevice specification (or "subdev spec") string for USRP family devices is composed of:
<motherboard slot name>:<daughterboard frontend name>
Ex: The subdev spec markup string to select a WBX on slot B.
B:0
Ex: The subdev spec markup string to select a BasicRX on slot B.
B:AB
-- OR --
B:A
-- OR --
B:B
A subdev spec can consist of multiple strings if a motherboard has the option
for more than one radio device. In the X300, you may have an SBX in slot A and
a CBX in slot B. Both of these daughterboards have one frontend ("0"), so the
subdev spec to configure both these radio channels would look like this:
A:0 B:0
The individual subdev specs are separated by spaces. On some devices, such as the
X300 or the B200, it is possible to swap these to hint that slot B should be the
first radio ("channel 0") and slot A should be the second radio ("channel 1"):
B:0 A:0
On devices with more than one radio, setting the subdev spec to a single value
declares that the other radio is not used. In a configuration with multiple USRPs,
this means that this device will only be assigned a single channel.
Note that a subdev spec string always only pertains to a *single* USRP, even if
multiple USRPs are configured to run together. For such a configuration, you set
a subdev spec string for every device individually.
\subsection config_subdev_slotnames USRP Family Motherboard Slot Names
All USRP family motherboards have a first slot named **A:**. The USRP1 and X3x0
have two daughterboard subdevice slots, known as **A:** and **B:**.
The B210 and E310 series have a different configuration, since their two radios
are logically connected to the same "daughterboard" (which is in reality the
integrated AD9361), but different frontends.
To select both radios on a B200 or an E300, use this string:
A:A A:B
\subsection config_subdev_default USRP Family Motherboard Slot Names
\subsection config_subdev_dbnames Daughterboard Frontend Names
Daughterboard frontend names can be used to specify which signal path is
used from a daughterboard. Most daughterboards have only one frontend `:0`.
A few daughterboards (Basic, LF and TVRX2) have multiple
frontend names available. The frontend names are documented in \ref page_dboards.
\section config_stream_args Streaming Arguments (Stream Args)
When initializing a streamer using uhd::device::get_tx_stream() and/or uhd::device::get_rx_stream(),
you must specify a uhd::stream_args_t object (see the manual for this struct and an in-depth
explanation of the individual components).
*/
// vim:ft=doxygen:
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