Datasheet

PREDEFINED GLOBALS AND CONSTANTS

In order to facilitate AVR programming, mikroBasic PRO for AVR implements a num-

ber of predefined globals and constants.

SFRs and related constants

All AVR SFRs are implicitly declared as global variables of volatile word type.

These identifiers have an external linkage, and are visible in the entire project.

When creating a project, the mikroBasic PRO for AVR will include an appropriate

(*.mbas) file from defs folder, containing declarations of available SFRs and con-

stants (such as PORTB, ADPCFG, etc). All identifiers are in upper case, identical to

nomenclature in the Microchip datasheets.

For a complete set of predefined globals and constants, look for “Defs” in the

mikroBasic PRO for AVR installation folder, or probe the Code Assistant for specific

letters (Ctrl+Space in the Code Editor).

Math constants

In addition, several commonly used math constants are predefined in mikroBasic

PRO for AVR:

PI = 3.1415926

PI_HALF = 1.5707963

TWO_PI = 6.2831853

E = 2.7182818

Predefined project level defines

These defines are based on a value that you have entered/edited in the current proj-

ect, and it is equal to the name of selected device for the project.

If ATmega16 is selected device, then ATmega16 token will be defined as 1, so it can

be used for conditional compilation:

#IFDEF ATmega16

...

#ENDIF