tree 82a84c8e33649b099de55a2dba162ba3df6232f1
parent 974c916e2db64738557f219a72ed9c32c35ec3a0
author Matt Spinler <spinler@us.ibm.com> 1501604447 -0500
committer Matt Spinler <spinler@us.ibm.com> 1503086896 -0500

Add PMBus class

This class provides the interfaces to read PMBus devices
via sysfs files.

This commit provides 3 interfaces:
 1) Write an integer (to provide: echo 1 > clear_faults)
 2) Read a file that represents a bit in a register.
 3) Read a file that represents a bit in a register within
    a PMBus page (or in something that acts like a page).

Additional ones may be added in the future.

ReadFailure/WriteFailure exceptions will be thrown on errors.

Change-Id: I7ea166da00ddc558a9f25c07e6ad9a16714cc3b6
Signed-off-by: Matt Spinler <spinler@us.ibm.com>