Byte order detection for control system data exchange
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United States of America Patent
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Aug 31, 2016
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Aug 31, 2016
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Abstract
Devices and methods for detecting the byte order (endianness) of a control device with which a peripheral device will exchange data. The control device initially transmits a special byte order determination data command to the peripheral device, which data command includes both a byte sequence having a byte order that can be read in any direction and still have the same value, and a specific data value that is known to both the control device and the peripheral device. Control device byte order is subsequently revealed by using the peripheral device to analyze the data value of the byte order determination data command in each of several possible byte orders to determine which byte order format results in a return of the expected specific value.
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