E 2 Key Function - IEI Technology ROCKY-558EV Manual

2
E Key™ Function
The ROCKY-558EV provides an outstanding E
for system integrator. Based on the E
store the ID Code, Pass Word, or Critical Data in the 1Kbit
EEPROM. Because the EEPROM is nonvolatile memory, you
don' t have to worry the losing of the very important data.
2
Basically the E
configured to 64 words(from 0 to 63). You could access(read or
write) each word at any time.
When you start to use the E
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 function for user to
integrate their application with E
(read_e2key and write_e2key) are written and compiled in C
format. Please check the following statement, then you will know
how to implement it easily.
unsigned int read_e2key(unsigned int address)
/* This function will return the E
address range is from 0 to 63. Return data is one word,16 bits */
void write_e2key(unsigned int address,unsigned data)
/* This function will write the given data to E
The address range is from 0 to 63. The data value is from 0 to
0xffff. */
KEY™ is based on a 1Kbit EEPROM which is
2
KEY™ you should have the utility in
2
KEY™ you could free to
2
KEY™ function. These library
2
KEY™ ' s data at address. The
2
KEY™ at address.
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2
KEY™ function