Mikroelektronika MIKROE-742 데이터 시트

The mikroPascal PRO for AVR allows you to access individual bits of 8-bit variables.
It also supports sbit and bit data types

To access the individual bits, simply use the direct member selector (.) with a vari-
able, followed by one of identifiers 

B0, B1, … , B7, or 0, 1, … 7

, with 

7

being

the most significant bit :

// Clear bit 0 on PORTA 

PORTA.B0 := 0;

// Clear bit 5 on PORTB 

PORTB.5 := 0;

There is no need of any special declarations. This kind of selective access is an
intrinsic feature of mikroPascal PRO for AVR and can be used anywhere in the
code. Identifiers 

B0–B7

are not case sensitive and have a specific namespace. You

may override them with your own members 

B0–B7

within any given structure.

See Predefined Globals and Constants for more information on register/bit names.

The mikroPascal PRO for AVR compiler has sbit data type which provides access
to bit-addressable SFRs. You can access them in several ways:

var LEDA : sbit at PORTA.B0;
var name : sbit at sfr-name.B<bit-position>;

var LEDB : sbit at PORTB.0;
var name : sbit at sfr-name.<bit-position>;

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- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 3