Maxim Integrated 73S12xxF Software - Manual (Page 62)

73S12xxF Software User Guide UG_12xxF_016
62 Rev. 1.50
Synopsis SFR_RC SFR_Read ( IN char cSFRAddr, OUT char *pcSFRValue );
Parameters
cSFRAddr: Input parameter
Specifies the address of the Special Function Register to be read.
pcSFRValue: Output parameter
Specifies the value read from the specified Special Function Register.
Return Codes SFR_OK
Successful read from the SFR.
SFR_INVALID Invalid SFR referenced.
SFR_Write()
Purpose Write to the specified Special Function Register.
Synopsis
SFR_RC SFR_Write ( IN char cSFRAddr, IN char cSFR, IN char cSFROperation );
Parameters cSFRAddr: Input parameter
Specifies the address of the Special Function Register to be written.
cSFR: Input parameter
Specifies the value to use to either set, clear or assign bits of the Special Function
Register specified.
cSFROperation: Input parameter
Specifies the operation to perform on the Special Function Register with the value
supplied. Possible values are:
ASSIGN_SFR 0
AND_SFR
1
OR_SFR 2
Return Codes SFR_OK
Successful write to the SFR.
SFR_INVALID Invalid or forbidden SFR referenced.
To set specific bits of the SFR, OR them with ‘1’s. To clear specific bits of the SFR AND them with ‘0’s.