USERCLASS Compiler Directive

The USERCLASS directive assigns a user-defined class name (user-classname) to a compiler-generated segment (MSpace). By default, the CARM Compiler uses the following basic class names for segment definitions.

To re-assign an MSpace to the default class, use the USERCLASS directive to assign the MSpace to the default class. For example:

#pragma userclass (DATA = default)

A user_classname may be referenced by the LARM Linker and used to locate all segments within that class to a specific memory section. In µVision, you may enter address ranges for user-defined classes under Options—LA Locate—User classes.

#pragma userclass (DATA = NVRAM)
// the following variables are stored in the DATA_NVRAM class
int  x1[10];
int  x2[10];

#pragma userclass (DATA = default)
// the following variables are stored in the default class DATA
int  y1[10];
int  y2[10];

#pragma userclass (CODE = APP)
// the following function is stored in the CODE_APP class
void func (void)  {
  ...
}