. .

2011

1.

2. 7-SEGMENT DISPLAY

3.

4. INTERRUPTS

5. O TIMER0

6. O TIMER1

7.

8.

9. /D

10.

M - 1 1

A 1

/

:

_ _

: 1. VR

(STK200/CodeVision C). 2. -

C. _ _

ATmega16 32 -, 4 (ports) A,B,C D. 8-bit, bit / . 3 : 1. M DDRx ( x=A,B,C,D) x

( bit 0) ( bit 1). ,

DDRA = 0b11000000; 0-5 6-7 .

2. PINx x, . ,

k = PINB; k ( unsigned char, . 8 bits)

bits ( 1 0) 8 .

3. H bits PORTx ( DDRx). , , PORTx (0 [0 Volt] 1 [5 Volt]) . , / (pull-up resistor), 1/0 bit . ,

DDRC = 0xf0; PORTC = 0x0f; 0-3 C pull up,

4-7 0 Volt. H Codevision C bits 3 . / , bitwise (""). :

DDRC.2 = 1; O 2 C PORTC.2 = 0; 2 C 0 Volt if (PINB.3 == 0).. 3

, ( 1 0). , .. ( ) C 1, PORTC :

M - 1 2

PORTC = 0b11111111; { } , PORTC = 255; { } , PORTC = 0xff; { }

- / STK200 8 (SW0-SW7) 8 (LED0-LED7). LED LEDn 0 Volt. , SWn 5 Volt . , (SW0 - SW7) D , (LED0 LED7) B.

LED PORTB.2 = 0; A LED2 PORTB.4 = 1; LED4

if (PIND.3 == 0) SW3 if (PIND.2 == 1) SW2

_ _

CODEVISION C , AVR E:

1. CodeVisionAVR ( desktop ).

2. project ( File -> New..).

3. , project .

4. (CodeWizard) Yes.

5. :

Chip

(i) Chip ATmega16

(ii) Clock 8,0 z

(iii) Program Type Application

- , , STK200

M - 1 3

6. File Generate, Save and Exit.

. directory . , 1 :

D:\MIKRO_ERG\HLEK1\ASK1\

directory, 3 . Ask1 .

7. , CodeVision Ask1.c CodeWizard. , .

, . , , ( Ctrl-A) delete.

, ( )

#include void main(void) {

#include ,

DDRB = 0b11111111; (0..7) B PORTB = 0b11111111;

1, LED

DDRD = 0b00000000; (0..7) D PORTD = 0b11111111;

pull-up D

while(1) {

( TRUE)

PORTB = 0xF8; PORTB 3 LED (LED0-2) 5

} while(1) ! } ( )

M - 1 4

DOWNLOAD

1. 8 LED STK200 , , B . LED pull-up (330) (Vcc).

2. ( LED ).

3. Project CodeVisionAVR Configure.

4. After Make Program The Chip OK.

!

5. Project CodeVisionAVR Make. , compile . , Program. , Make.

6. Program FLASH .

M - 1 5

_STK 200 _

PORT B

PORT A

PORT C

PORT D

LED0-LED7LED ISPLED

/ FF

ISP

SW0-SW7

jumpers STK200

Bit 0 Bit 1

Bit 7Bit 6VccGnd

PORTx (x=A, B, C, D) headers

STK200.

M - 1 6

_STK 200 _

Atmel ( ).

6 ( pin 2X5 IDC10) pin .

8 . 8 LED . 2 LED, . RS232 ( / ). Brownout ( ). Flash. EEPROM. 8 MHz ( 16 MHz). ISP (In System Programming) USB ( programmer ) /.

M - 1 7

1.1 LEDs

, PORTB, LED. LED0 STK200.

( ) PORTB : o LED{0 1 2 3 4} :

o LED{0 2 4 6} :

, directory , Save as , Ask11.c . , , , sk1.c, . , . , .

1.2

8 LEDs (LED0-LED7) PORT B ( ) a b.

: 255 8 bit. LED 1 0 . #include // unsigned char a=25; // (1 byte: 0-255) unsigned char b=3; unsigned char sum;

void main(void) { DDRB=0xff; // Port B sum=a+b; //

while(1) // { PORTB= ~sum; // Port B } // ~ sum } // LED 0 ,

LEDs. a b LED. C:

A++; // A 1 ( =+1) A--; // 1 ( =-1) A+=2; // 2 ( =+2) A-=3; // 3 ( =-3) A*=2; // ( =*2) A/=5; // 5 ( =/5)

a=210 b=80 . , .

M - 1 8

1.3

D 8 () SW0-SW7 STK200. D PIND LED PORTB.

SW0-SW7 0 , . AVR pull-up (330) PORTD=0xFF;.

: pull-down , , 8 10 GND.

#include // unsigned char a; //

void main(void) { DDRB=0xff; // B DDRD=0x00; // D PORTD=0xff; // : pull-up D

while(1) // { a=PIND; // D a PORTB=a; // a B } } , while :

PORTB = PIND; // Port D // PORT B

LED .

M - 1 9

1.4 if

SW1 LED4, SW2 LED6, SW3 LED.

#include // void main(void) { DDRB = 0xFF; // Port B PORTB = 0xFF; // , LED DDRD = 0x00; // Port D PORTD = 0xFF; // pull-up resistors Port D while(1) { if(PIND.1==0) // SW1 PORTB.4 = 0; // LED4 ( ) if(!PIND.2) // SW2 PORTB.6 = 0; // LED6 ( ) if(!PIND.3) // SW3 PORTB = 0xFF; // LED } } ( ) if (PIND.1==0) :

if(PIND==0xFD) ( ) if(PIND.1==0) ():

if(!(PIND&=0x02)) ( ) PORTB.4 = 0; PORTB = 0xEF;

LED SW0 SW7 SW3 SW4.

1.6

AVR Studio, ( )

M - 1 10

AVRStudio AVRStudio , , PC AVR. , compiler. ( /). ( 3 AVRStudio).

Codevision, compile , AVRStudio

AVRStudio, :

AVR Studio,

. ( , Alt+5 ).

(, , /, .) / ( ). , B D :

Debug , , . Trace into, F11 ( ). , I/O.

STK200, ( 1) "Input Pins" PORTD . STK200, , , .

- 2 1

A 2

:

_ _

(interrupts), interrupts. seven segment display , (delay).

_ _ , ,

7 (7 segment display) 0-9. 7 (LED) ( a, b, c, d, e, f g ), LED ( . dp), . . , 7 , display 8, , , a,b,c,d g, 3.

a b

c

de

fg CA

CA

ab

c

de

fg

.

To display (S52-11HA) (common anode), ( ). , display +VCC, segments 0 .

, display , flat idc-10, C, .

LLLLLLL

CA

+

ab

cd

e

fg

5 V

330R

5 V

LLLLLLL

L 557

CA

+

ab

cd

e

fg

Gated

BC557

PNP

5 V

L(0V)

1,5 K

a b g

330

CA

L L L

- 2 2

2.1 7 (seven segment display)

STK200, display (0-7). display .

D , SW0-SW7.

#include

void main(void) { DDRC =0xFF; PORTC=0xFF; //, display DDRD =0x00; //Port D PORTD=0xFF;

while(1) { switch(PIND) // { case 0xFE:PORTC=~0x3F;break; // SW0 display 0 case 0xFD:PORTC=~0x06;break; // SW1 display 1 case 0xFB:PORTC=~0x5B;break; // SW2 display 2 case 0xF7:PORTC=~0x4F;break; // SW3 display 3 case 0xEF:PORTC=~0x66;break; // SW4 display 4 case 0xDF:PORTC=~0x6D;break; // SW5 display 5 case 0xBF:PORTC=~0x7D;break; // SW6 display 6 case 0x7F:PORTC=~0x07;break; // SW7 display 7 default: PORTC=~0x00;break; // , // display } } } ( PORTC) display ;

2 .

default .

, SW3 SW5 display .

- 2 3

2.2

display , C. display .

#include

unsigned char button[] ={ 0xFE, 0xFD, 0xFB, 0xF7, 0xEF, 0xDF, 0xBF, 0x7F}; //buttons unsigned char display[]={~0x3F, ~0x06, ~0x5B, ~0x4F, ~0x66, ~0x6D, ~0x7D, ~0x07}; //display unsigned char i; void main(void) { DDRC =0xFF; PORTC=0xFF; DDRD =