Mikroelektronika MIKROE-742 데이터 시트

The mikroPascal PRO for AVR provides a Sound Library to supply users with routines necessary
for sound signalization in their applications. Sound generation needs additional hardware, such
as piezo-speaker (example of piezo-speaker interface is given on the schematic at the bottom of
this page).

- Sound_Init 
- Sound_Play 

370

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6

var Sound_Play_Pin :
sbit; sfr; external;

Sound output pin.

var Sound_Play_Pin :
sbit at PORTC.B3;

var
Sound_Play_Pin_Direct
ion : 

Direction of the Sound out-
put pin.

var
Sound_Play_Pin_Direct
ion : 

DDRC.B3;

procedure Sound_Init();

Nothing.

Configures the appropriate MCU pin for sound generation.

Global variables: 

- 

Sound_Play_Pin

: Sound output pin 

- 

Sound_Play_Pin_Direction

: Direction of the Sound output pin 

must be defined before using this function.

// Sound library connections
var Sound_Play_Pin : sbit at PORTC.B3;         
var Sound_Play_Pin_Direction : sbit at DDRC.B3;
// End of Sound library connections

...
Sound_Init();