MikroElektronika PIC Microcontrollers PIC16 Uživatelský manuál stáhnout pdf (Strana 43)

Symbol makes possible to replace expression with a single identifier alias. Use of

symbols increases the reusability and flexibility of code.

BASIC syntax restricts you to single line expressions, allowing shortcuts for con-

stants, simple statements, function calls, etc. Scope of symbol identifier is a whole

source file in which it is declared.

Symbol is declared as:

symbol alias = single_line_expression

where alias must be a valid identifier which you will be using throughout the

code.

Using a symbol in a program technically consumes no RAM memory - compiler

simply replaces each instance of a symbol with the appropriate code from the dec-

laration.

symbol MaxAllowed = 234

' symbol as alias for numeral

symbol PORT = PORTC

' symbol as alias for SFR

symbol DELAY1S = delay_ms(1000)

' symbol as alias for proc. call

if teA > MaxAllowed then

teA = teA - 100

end if

PORT.1 = 0

DELAY1S

...

mikroBASIC

- Basic Compiler for Microchip PIC microcontrollers

mikroBASIC

MikroElektronika: Development tools - Books - Compilers

making it simple...

page

SYMBOLS

Symbols

and PIC

Example

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 171 172

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MikroElektronika PIC Microcontrollers PIC16 Uživatelský manuál Strana 43