libsmu

libsmu contains abstractions for streaming data to and from USB-connected analog interface devices, currently supporting the Analog Devices' ADALM1000. Building off of LibUSB for cross-platform operation, it offers the sourcing of repeated waveforms, configuration of hardware, and measuring of signals.

Python bindings are also provided in the form of the pysmu module. See instructions below for how to build them.

Building

Build dependencies are cmake, pkgconfig, boost (headers only), and libusb-1.0.

Bindings for Python are enabled by default. To be able to build libsmu with Python bindings, use the following steps, before compiling the library:

Install pip and setup tools for Python:

$ sudo apt-get install python-setuptools python-pip

Install Cython

$ sudo pip install cython

To build and install the library and command line application use the following steps:

Clone the repo:

$ git clone https://github.com/analogdevicesinc/libsmu.git

Configure via cmake:

$ mkdir build && cd build && cmake ..

Compile:

$ make

Install:

$ sudo make install

Docs

Doxygen-based documentation is available at https://analogdevicesinc.github.io/libsmu/.

This can also be built locally if enabled using the following cmake option before running make:

cmake -DWITH_DOC=ON ..

After make is run, the generated documentation files can then be found in the html subdir of the build directory.

Testing

The Google Test framework is used to run various streaming tests. Make sure it's installed on the host system and then use the following to build and run tests:

cmake -DBUILD_TESTS=ON ..
make check

Note that at least one device should be inserted to the system for the checks to run properly.

Python

Bindings for python (2.7, 3.4, and 3.5) are available and can be enabled explicitly via the following cmake command (they're enabled by default):

$ cmake -DBUILD_PYTHON=ON ..

Note that this will build only one versions of python for the first supported implementation it finds installed on the system. To build them for other versions it's easiest to build them manually via the setup.py script in the regular python manner if libsmu has already been built and/or installed on the host machine.

Linux

By default, libsmu is installed into various directories inside /usr. However, if it's installed somewhere such as /usr/local the runtime linker cache often needs to be regenerated otherwise runtime linking errors will occur.

Regenerate runtime linker cache:

$ sudo ldconfig

If the same errors still happen, make sure the directory the libsmu library is installed to is in the sourced files for /etc/ld.so.conf before running ldconfig.

In addition, the udev rules file (53-adi-m1k-usb.rules) is installed by default to give regular users access to devices supported by libsmu. Udev has to be forced to reload its rules files in order to use the new file without rebooting the system.

Reload udev rules files:

$ sudo udevadm control --reload-rules

Finally, for python support on Debian/Ubuntu derived distros users will have to export PYTHONPATH or perform a similar method since hand-built modules are installed to the site-packages directory (which isn't in the standard search list) while distro provided modules are placed in dist-packages.

Add pysmu module directory to python search path:

$ export PYTHONPATH=/usr/lib/python2.7/site-packages:${PYTHONPATH}

Note the command will have to be altered for targets with different bitness or python versions.

OS X

For systems running OS X, first install homebrew. Then use brew to install libusb, cmake, boost, pkg-config, and optionally python to build the python bindings. In addition, cython needs to be installed via pip to generate the python extension.

Note that libusb is built for both 32 and 64 bit architectures since the current build system for libsmu builds universal binaries by default.

brew install libusb --universal
brew install cmake boost pkg-config python
pip install cython

After the above dependencies are installed, the command line instructions in the previous sections should work on OS X as well.

Windows

On Windows, it's easiest to use the provided installers, libsmu-setup-x86.exe and libsmu-setup-x64.exe that install either 32 or 64 bit support, respectively. During the install process options are provided to install python and Visual Studio development support.