A simple library for accessing the MCP23S17 port expander through SPI.
To build the library, use:
$ make
Install the library to /usr/local using:
$ make install
To test the library, compile and execute the example program:
$ make example
$ ./example
Another example program, using interrupts, is available. Build with:
$ make interrupt_example
$ ./interrupt_example
See example.c and interrupt_example.c for ideas on how to use.
Compile your software with the following flag:
-lmcp23s17
You can specify the path of the library manually, using:
-I/path/to/headers -L/path/to/libmcp23s17 -lmcp23s17
An online version of the documentation is available at http://piface.github.io/libmcp23s17.
Build it with (assuming that you are in the directory of the cloned repository):
$ cd docs/
$ doxygen libmcp23s17-doc.conf
To view as HTML, point your browser to docs/html/index.html.
To view as PDF:
$ cd latex/
$ make
The pdf is called refman.pdf.