Appendix E. E 2 Key™ Function - ICP Electronics ROCKY-3786EV User Manual

Appendix E. E
The ROCKY-3786EVG provides an outstanding E
function for system integrator. Based on the E
the user can free to store the ID Code, Password or
Critical Data in the 1Kbit EEPROM. Because the EEPROM
is nonvolatile memory, the user don't have to worry for
losing very important data.
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Basically the E KEY™ is based on a 1Kbit EEPROM which
is configured to 64 words(from 0 to 63). The user could
access (read or write) each word at any time.
When the user start to use the E
have the utility in the package. The software utility will
include four files as follows,
README.DOC
E2KEY.OBJ
EKEYDEMO.C
EKEYDEMO.EXE.
The E2KEY.OBJ provides two library functions for user to
integrate their application with E
library (read_e2key and write_e2key) are written
and compiled in C language. Please check the following
statement, then the user will know how to implement it
easily.
unsigned int read_e2key(unsigned int address)
/* This function will return the
address. The address range is from 0 to 63. Return data
is one word,16 bits
*/void write_e2key(unsigned int address,unsigned
data)
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Key™ Function
2
KEY™ the user should
2
KEY™ function. These
2
E
2
KEY™
2
KEY™,
KEY™'s data at
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