Axis Software User Manual

One Wire Interface

The Axis hardware includes two one wire interfaces. The one wire interfaces connect to:

• a unique serial number chip on the Axis main board
• an iButton^® option on the Axis backplane

The serial number chip has a 48 bit identifier that can be used to identify specific Axis boards.
An iButton^® can be optionally fitted on the backplane by the customer.

The Axis driver offers a simple interface to read these devices via entries in the /proc file system. The driver creates two entries:

/proc/axis_00/ibutton

and

/proc/axis_00/serial_number

These can be read as if they are normal files and they output a text representation of the serial number.

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© HEBER LTD. 2005. This document and the information contained therein is the intellectual property of Heber Ltd. and must not be disclosed to a third party without consent. Copies may be made only if they are in full and unmodified. The information contained in this documentation is believed to be accurate and reliable. However, Heber Ltd. assumes no responsibility for its use, and reserves the right to revise the documentation without notice.
Document No: 80-17794, Issue 4r1    Release Date: 01.12.05     Email: support@heber.co.uk    www.heber.co.uk