28.2.9 __builtin_dataflashoffset

Description

Returns the offset of the dataflash object whose address is given as a parameter. The argument p must be the address of an object in dataflash space; otherwise an error message is produced and the compilation fails. See the space attribute in Variable Attributes.

Prototype

unsigned int __builtin_dataflashoffset(const void *p);

Argument

p = object address.

Return Value

Returns the offset of the dataflash object whose address is given as a parameter.

Assembler Operator/ Machine Instruction

tbloffset

Error Messages

The following error message is produced when this function is used incorrectly: "Argument to __builtin_dataflashoffset() is not the address of an object in dataflash space." The argument must be an explicit object address. For example, if obj is object in dataflash space, the following syntax is valid: unsigned offset = __builtin_dataflashoffset(&obj);