Adding third party library hidapi

third_party/hidapi/README.txt

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+         HIDAPI library for Windows, Linux, FreeBSD and Mac OS X
+        =========================================================
+
+About
+======
+
+HIDAPI is a multi-platform library which allows an application to interface
+with USB and Bluetooth HID-Class devices on Windows, Linux, FreeBSD, and Mac
+OS X.  HIDAPI can be either built as a shared library (.so or .dll) or
+can be embedded directly into a target application by adding a single source
+file (per platform) and a single header.
+
+HIDAPI has four back-ends:
+	* Windows (using hid.dll)
+	* Linux/hidraw (using the Kernel's hidraw driver)
+	* Linux/libusb (using libusb-1.0)
+	* FreeBSD (using libusb-1.0)
+	* Mac (using IOHidManager)
+
+On Linux, either the hidraw or the libusb back-end can be used. There are
+tradeoffs, and the functionality supported is slightly different.
+
+Linux/hidraw (linux/hid.c):
+This back-end uses the hidraw interface in the Linux kernel.  While this
+back-end will support both USB and Bluetooth, it has some limitations on
+kernels prior to 2.6.39, including the inability to send or receive feature
+reports.  In addition, it will only communicate with devices which have
+hidraw nodes associated with them.  Keyboards, mice, and some other devices
+which are blacklisted from having hidraw nodes will not work. Fortunately,
+for nearly all the uses of hidraw, this is not a problem.
+
+Linux/FreeBSD/libusb (libusb/hid-libusb.c):
+This back-end uses libusb-1.0 to communicate directly to a USB device. This
+back-end will of course not work with Bluetooth devices.
+
+HIDAPI also comes with a Test GUI. The Test GUI is cross-platform and uses
+Fox Toolkit (http://www.fox-toolkit.org).  It will build on every platform
+which HIDAPI supports.  Since it relies on a 3rd party library, building it
+is optional but recommended because it is so useful when debugging hardware.
+
+What Does the API Look Like?
+=============================
+The API provides the the most commonly used HID functions including sending
+and receiving of input, output, and feature reports.  The sample program,
+which communicates with a heavily hacked up version of the Microchip USB
+Generic HID sample looks like this (with error checking removed for
+simplicity):
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include "hidapi.h"
+
+#define MAX_STR 255
+
+int main(int argc, char* argv[])
+{
+	int res;
+	unsigned char buf[65];
+	wchar_t wstr[MAX_STR];
+	hid_device *handle;
+	int i;
+
+	// Initialize the hidapi library
+	res = hid_init();
+
+	// Open the device using the VID, PID,
+	// and optionally the Serial number.
+	handle = hid_open(0x4d8, 0x3f, NULL);
+
+	// Read the Manufacturer String
+	res = hid_get_manufacturer_string(handle, wstr, MAX_STR);
+	wprintf(L"Manufacturer String: %s\n", wstr);
+
+	// Read the Product String
+	res = hid_get_product_string(handle, wstr, MAX_STR);
+	wprintf(L"Product String: %s\n", wstr);
+
+	// Read the Serial Number String
+	res = hid_get_serial_number_string(handle, wstr, MAX_STR);
+	wprintf(L"Serial Number String: (%d) %s\n", wstr[0], wstr);
+
+	// Read Indexed String 1
+	res = hid_get_indexed_string(handle, 1, wstr, MAX_STR);
+	wprintf(L"Indexed String 1: %s\n", wstr);
+
+	// Toggle LED (cmd 0x80). The first byte is the report number (0x0).
+	buf[0] = 0x0;
+	buf[1] = 0x80;
+	res = hid_write(handle, buf, 65);
+
+	// Request state (cmd 0x81). The first byte is the report number (0x0).
+	buf[0] = 0x0;
+	buf[1] = 0x81;
+	res = hid_write(handle, buf, 65);
+
+	// Read requested state
+	res = hid_read(handle, buf, 65);
+
+	// Print out the returned buffer.
+	for (i = 0; i < 4; i++)
+		printf("buf[%d]: %d\n", i, buf[i]);
+
+	// Finalize the hidapi library
+	res = hid_exit();
+
+	return 0;
+}
+
+If you have your own simple test programs which communicate with standard
+hardware development boards (such as those from Microchip, TI, Atmel,
+FreeScale and others), please consider sending me something like the above
+for inclusion into the HIDAPI source.  This will help others who have the
+same hardware as you do.
+
+License
+========
+HIDAPI may be used by one of three licenses as outlined in LICENSE.txt.
+
+Download
+=========
+HIDAPI can be downloaded from github
+	git clone git://github.com/signal11/hidapi.git
+
+Build Instructions
+===================
+
+This section is long. Don't be put off by this. It's not long because it's
+complicated to build HIDAPI; it's quite the opposite.  This section is long
+because of the flexibility of HIDAPI and the large number of ways in which
+it can be built and used.  You will likely pick a single build method.
+
+HIDAPI can be built in several different ways. If you elect to build a
+shared library, you will need to build it from the HIDAPI source
+distribution.  If you choose instead to embed HIDAPI directly into your
+application, you can skip the building and look at the provided platform
+Makefiles for guidance.  These platform Makefiles are located in linux/
+libusb/ mac/ and windows/ and are called Makefile-manual.  In addition,
+Visual Studio projects are provided.  Even if you're going to embed HIDAPI
+into your project, it is still beneficial to build the example programs.
+
+
+Prerequisites:
+---------------
+
+	Linux:
+	-------
+	On Linux, you will need to install development packages for libudev,
+	libusb and optionally Fox-toolkit (for the test GUI). On
+	Debian/Ubuntu systems these can be installed by running:
+	    sudo apt-get install libudev-dev libusb-1.0-0-dev libfox-1.6-dev
+
+	If you downloaded the source directly from the git repository (using
+	git clone), you'll need Autotools:
+	    sudo apt-get install autotools-dev autoconf automake libtool
+
+	FreeBSD:
+	---------
+	On FreeBSD you will need to install GNU make, libiconv, and
+	optionally Fox-Toolkit (for the test GUI). This is done by running
+	the following:
+	    pkg_add -r gmake libiconv fox16
+
+	If you downloaded the source directly from the git repository (using
+	git clone), you'll need Autotools:
+	    pkg_add -r autotools
+
+	Mac:
+	-----
+	On Mac, you will need to install Fox-Toolkit if you wish to build
+	the Test GUI. There are two ways to do this, and each has a slight
+	complication. Which method you use depends on your use case.
+
+	If you wish to build the Test GUI just for your own testing on your
+	own computer, then the easiest method is to install Fox-Toolkit
+	using ports:
+		sudo port install fox
+
+	If you wish to build the TestGUI app bundle to redistribute to
+	others, you will need to install Fox-toolkit from source.  This is
+	because the version of fox that gets installed using ports uses the
+	ports X11 libraries which are not compatible with the Apple X11
+	libraries.  If you install Fox with ports and then try to distribute
+	your built app bundle, it will simply fail to run on other systems.
+	To install Fox-Toolkit manually, download the source package from
+	http://www.fox-toolkit.org, extract it, and run the following from
+	within the extracted source:
+		./configure && make && make install
+
+	Windows:
+	---------
+	On Windows, if you want to build the test GUI, you will need to get
+	the hidapi-externals.zip package from the download site.  This
+	contains pre-built binaries for Fox-toolkit.  Extract
+	hidapi-externals.zip just outside of hidapi, so that
+	hidapi-externals and hidapi are on the same level, as shown:
+
+	     Parent_Folder
+	       |
+	       +hidapi
+	       +hidapi-externals
+
+	Again, this step is not required if you do not wish to build the
+	test GUI.
+
+
+Building HIDAPI into a shared library on Unix Platforms:
+---------------------------------------------------------
+
+On Unix-like systems such as Linux, FreeBSD, Mac, and even Windows, using
+Mingw or Cygwin, the easiest way to build a standard system-installed shared
+library is to use the GNU Autotools build system.  If you checked out the
+source from the git repository, run the following:
+
+	./bootstrap
+	./configure
+	make
+	make install     <----- as root, or using sudo
+
+If you downloaded a source package (ie: if you did not run git clone), you
+can skip the ./bootstrap step.
+
+./configure can take several arguments which control the build. The two most
+likely to be used are:
+	--enable-testgui
+		Enable build of the Test GUI. This requires Fox toolkit to
+		be installed.  Instructions for installing Fox-Toolkit on
+		each platform are in the Prerequisites section above.
+
+	--prefix=/usr
+		Specify where you want the output headers and libraries to
+		be installed. The example above will put the headers in
+		/usr/include and the binaries in /usr/lib. The default is to
+		install into /usr/local which is fine on most systems.
+
+Building the manual way on Unix platforms:
+-------------------------------------------
+
+Manual Makefiles are provided mostly to give the user and idea what it takes
+to build a program which embeds HIDAPI directly inside of it. These should
+really be used as examples only. If you want to build a system-wide shared
+library, use the Autotools method described above.
+
+	To build HIDAPI using the manual makefiles, change to the directory
+	of your platform and run make. For example, on Linux run:
+		cd linux/
+		make -f Makefile-manual
+
+	To build the Test GUI using the manual makefiles:
+		cd testgui/
+		make -f Makefile-manual
+
+Building on Windows:
+---------------------
+
+To build the HIDAPI DLL on Windows using Visual Studio, build the .sln file
+in the windows/ directory.
+
+To build the Test GUI on windows using Visual Studio, build the .sln file in
+the testgui/ directory.
+
+To build HIDAPI using MinGW or Cygwin using Autotools, use the instructions
+in the section titled "Building HIDAPI into a shared library on Unix
+Platforms" above.  Note that building the Test GUI with MinGW or Cygwin will
+require the Windows procedure in the Prerequisites section above (ie:
+hidapi-externals.zip).
+
+To build HIDAPI using MinGW using the Manual Makefiles, see the section
+"Building the manual way on Unix platforms" above.
+
+HIDAPI can also be built using the Windows DDK (now also called the Windows
+Driver Kit or WDK). This method was originally required for the HIDAPI build
+but not anymore. However, some users still prefer this method. It is not as
+well supported anymore but should still work. Patches are welcome if it does
+not. To build using the DDK:
+
+   1. Install the Windows Driver Kit (WDK) from Microsoft.
+   2. From the Start menu, in the Windows Driver Kits folder, select Build
+      Environments, then your operating system, then the x86 Free Build
+      Environment (or one that is appropriate for your system).
+   3. From the console, change directory to the windows/ddk_build/ directory,
+      which is part of the HIDAPI distribution.
+   4. Type build.
+   5. You can find the output files (DLL and LIB) in a subdirectory created
+      by the build system which is appropriate for your environment. On
+      Windows XP, this directory is objfre_wxp_x86/i386.
+
+Cross Compiling
+================
+
+This section talks about cross compiling HIDAPI for Linux using autotools.
+This is useful for using HIDAPI on embedded Linux targets.  These
+instructions assume the most raw kind of embedded Linux build, where all
+prerequisites will need to be built first.  This process will of course vary
+based on your embedded Linux build system if you are using one, such as
+OpenEmbedded or Buildroot.
+
+For the purpose of this section, it will be assumed that the following
+environment variables are exported.
+
+	$ export STAGING=$HOME/out
+	$ export HOST=arm-linux
+
+STAGING and HOST can be modified to suit your setup.
+
+Prerequisites
+--------------
+
+Note that the build of libudev is the very basic configuration.
+
+Build Libusb. From the libusb source directory, run:
+	./configure --host=$HOST --prefix=$STAGING
+	make
+	make install
+
+Build libudev. From the libudev source directory, run:
+	./configure --disable-gudev --disable-introspection --disable-hwdb \
+		 --host=$HOST --prefix=$STAGING
+	make
+	make install
+
+Building HIDAPI
+----------------
+
+Build HIDAPI:
+
+	PKG_CONFIG_DIR= \
+	PKG_CONFIG_LIBDIR=$STAGING/lib/pkgconfig:$STAGING/share/pkgconfig \
+	PKG_CONFIG_SYSROOT_DIR=$STAGING \
+	./configure --host=$HOST --prefix=$STAGING
+
+
+Signal 11 Software - 2010-04-11
+                     2010-07-28
+                     2011-09-10
+                     2012-05-01
+                     2012-07-03