35
Basically the E
2
KEY™
is based on a 1Kbit EEPROM which is
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
2
KEY™
you should have the utility in
the package. The software utility will include four files as follows,
README.DOC
E2KEY.OBJ
EKEYDEMO.C
EKEYDEMO.EXE.
The E
2
KEY.OBJ provides two-library function for user to
integrate their application with E
2
KEY™
function. These libraries
(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 E2KEY™
’ s data at address. The
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
2
KEY™
at address.
The address range is from 0 to 63. The data value is from 0 to
0xffff. */
To easy start to use the function, please refer the included
EKEYDEMO.C code first.
Please note the E
2
KEY™
function is based on the working of
parallel port. So you should enable the ROCKY-P218BXA’ s
parallel port, otherwise it will be not working.
Summary of Contents for ROCKY-P218BXA Pentium II & Creative Sound
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