28.2.48 __builtin_readsfr

Description

Reads the Special Function Register (SFR).

Prototype

unsigned int __builtin_readsfr(const void *p);

Argument

p – object address

Return Value

Returns the SFR value.

Assembler Operator/ Machine Instruction

readsfr

Error Messages

If the object address is not in the range of SFR memory space, an error will be produced. Consult your device data sheet for the memory range.