Maxim-integrated 73S12xxF Software Manual de usuario descargar pdf (Pagina 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

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.

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Maxim-integrated 73S12xxF Software Manual de usuario Pagina 62