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22
Function Library
Leading
EDGE COMPUTING
2.2.3
License Management Functions
AD_InstallSecret
Installs secret on DS28C22, and can, optionally, lock the
secret (irreversible).
Syntax
C/C++
short AD_InstallSecret(unsigned short wCard-
Number, unsigned char *MasterSecret, bool
lockbit)
Parameter(s)
wCardNumber:
Retrieved from the return value of
SmartPoE_Register_Card.
MasterSecret:
32 byte buffer with new secret (or partial).
LockBit:
Allows secret to be write-protected, where it is read as pro-
tected by hardware design. Once set, secret protection can-
not be reset.
Return Code
No error occurs if return value >= 0, and if negative value, as
follows
-2
An invalid wCardNumber parameter,
wCardNumber is less than 32
-5
The function is not supported by this card
SmartPoE_Get_MCUVersion
-12 An invalid secret. (SetMastSecret error)
-15 Secret has been locked.
AD_SetMasterSecret
Sets secret on DS28C22.