dasar avr timer

8/16/2019 dasar AVR Timer

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IMER

CLOCKI

B 2 ( CN)

CN

BOTTOM > TOP

•T TCNT 1

• TCNT TOP BOTTOM ()

• F , .


2/45

OPCN0 (8 )

255

(1111 1111)

OVERFLOW

FLAG

TOV=1

BOOM=0

(0000 0000)

255


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MODE F IMER

•M :

, , .

•M PM : DC

•M I C :

, , .

•M CC :


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K IMER

•J 1 1 A2313 = 3 (0, 1 )

A 16 = 4 (0, 1, 2 )

A128 = 5 (0 4 )

•L (CN) 0 2 = 8

1 3 = 16

•M M 0 2

M 1 3

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

07


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3. 0 M PM

1. 0 M N2. 0

4. 0 M CC

5. 1 M I C


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1. IMER0

255255

TOV=1 TOV=1 TOV=1

255

0

CN0

TOV=0 TOV=0

1/1

1/8

1/64

1/128

1/1024

11.059.200 HTOV=1

CN0(8 )

P

B>255I

11059200

1382.400

172.800

43.200

10.800


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S CS02:CS01:CS00

T 000

1/1 001

1/8 010

1/64 011

1/256 100

1/1024 101

E T0

110

REGISER CCR0

REGISER REGISER PADA IMER 0

0 WGM

00

WGM

01 CS02 CS01 CS00

O0

REGISER IFR ( )

OEI0

REGISER IMSK

0255CN0

T0


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CN0

P 0

TOV

255

1

F = 10.800 HT1 = 0.0000926

0TOV=1

= JMLAH CLOCK 1

= 255 0.0000926 DEIK = 0.0236 DEIK


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F = 10.800 HT1 = 0.0000926 55

CN0TOV

1

M 0 0

CN0

BOTTOM=55 = (25555) 1

= 200 0.0000926 DEIK

= 0.01852 DEIKBOTTOM= 0

= (OPBOOM) 1

= (2550) 1

= 255 0.0000926 DEIK

= 0.0236 DEIK


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C P 0 = 0.01852

10800

B ?B BOOM/ CN0?

P 0 = 1

T1 = 1/10800 = 0 .0000926

= 0.01852 /0 .0000926

=

TCNT0=?

= 0.01852

TOP

0

CN0

255

37

JUMLAH CLOCK = TOP BOTTOM

BOTTOM = TOP JUMLAH CLOCK

= 255 200 = 55

ICN0 ()

0.01852

55

0


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0

1. / CN0 .

2. E ( OEI0=1, IMSK)

3. ( 0,1,2, CCR0)

4. / /ISR .

()

• M 0

CCR0 = 0;

• M 0( 2 1 0

)

CCR0 =00000 0101; // 005;


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0

P IDE


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2. 0

S CS02:CS01:CS00

T 000

1/1 001

1/8 010

REGISER CCR0 PADA IMER 0

0 0 CS02 CS01 CS00

1/256 100

1/1024 101

T0 110

T0 111

000CN0

T0


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0

255 255 255

O=1 O=2 O=3

TCNT0

J = TCNT0 + ( * 255)


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0

1. 0 .

2. E ( OEI0=1, IMSK)

3. S B/ CN0 = 0

4. 0 ( 0,1,2, CCR0)

5. I ISR 0

()

5. J T0 = TCNT0 + ( * 255)


16/45

#

=0;

// T 0

TIM0OVF 0()

= + 1;

()

DDRA= 0FF; //PORTA SEBAGAI OUTPUT

DDRC=0FF; //PORTC SEBAGAI OUTPUT

// T/C 0

// C : T0 R E

// M: N =FF

TCCR0=007;

TCNT0=000;

// T()/C() I()

TIMSK=001;

// G

#("")

(1)

PORTC = TCNT0

PORTA = ;

;


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5. 1 M I C

= ?

PIN ICP1


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CARA KERJA INP CAPRE

•TIMER1 DISET MENCACAH MODE NORMAL•INTERUPSI INPUT CAPTURE DIAKTIFKAN/ENABLE

•TIMER 1 DIAKTIFKAN DGN MENETAPKAN SUMBER CLOCK

•TCNT1 TERUS BERGULIR INCREMENT DAN RESET KETIKA NILAI MA

•

KETIKA ADA PERUBAHAN SINAL DI PIN ICP1 ,MENEBABKAN INTERUPSIINPUT CAPTURE

•ISI TCNT1 SAAT ITU DICOP KE REG ICR1

INISIALISASI

TIMER1

ICR1

TCNT1

•

•KETIKA ADA PERUBAHAN SINALBERIKUTNA KEMBALI

TERJADI INTERUPSI INPUT CAPTURE , BACA ICR1

•SELISIH DATA ICR1 SAAT INI DGN ICR1 G DISIMPAN

SEBELUMNA ADALAH PERIODE PULSA

ICR1

TCNT1


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65.536 65.536 65.536

TCNT1

16

P INP CAPRE CN1

0


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65.536

TCNT1

ICR1 = TCNT1 ICR1 = TCNT1

0


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65.536

TCNT1

ICR1 = TCNT1 ICR1 = TCNT1

0

500

P :

=4500 500

= 4000


23/45

65.536

T

TCNT1

64536 1200 J ICR1 CN1

=1 =2=0

1200

1000

P :

=1200 1000

= 200

65,736


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65.536

65.536

T

TCNT1

=1 =1=0

1200

1000

ICR1 = TCNT1

ICR1= ICR1

= ICR + (65.536 * ) = ICR

I =

ICR1 = TCNT1

ICR1= ICR1

= ICR + (65.536 * ) = ICR

I =

T = 1200 +(65.536*1) 1000 =


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ICR1

TCNT1

ICR1

TCNT1TOV TOV065536 065536

CARA KERJA INP CAPRE

++ ++

PIN

ICP1

INTCAPT


26/45

REGISER CCR1A

COM1A1 COM1A0 GM11 GM10

ICIE1 OEI1

REGISER IMSK 07

REGISER CCR1B

ICNC1 ICES1 GM13 GM12 CS12 CS11 CS10

1= N C

1= ICP

P S TCNT0 N


27/45

REGISER CN1 REGISER ICR1

ICR1H0

7

7

0

7CN1H

CN1L

07

0 0 0 0 1 0 1 1

1 1 1 1 1 0 1 1

G 8

ICR1LICR1H

0 0 0 0 1 0 1 1

1 1 1 1 1 0 1 1


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IM1CAP 1()

ICR1S = (ICR1H


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#

;

S, S; C;

/*T 1 ISR*/

TIM1OVF 1()

++;

/*T 1 ISR*/

S = (CR1H


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()

TCCR1A = 0; /* */

TCCR1B = 0C2;/*T 1 /8, */

TIMSK = 024; /* 1 */

#() /* */

(1)

; /* */


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3. 0 M PM

20%

50%

80%


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0


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0 WGM

00

01

C

00

WGMCS02 CS01 CS00

S CS02:CS01:CS00

T 000

1/1 001

1/8 010

1/64 011

1/256 100

1/1024 101

E T0

110

REGISER CCR0

0 1 1 0 1 0 1 1

C CCR0 PM

0 WGM

00

01

C

00

WGM

01 CS02 CS01 CS00


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OCR OCR OCR

255

CN0

80%

MOTOR DC


35/45

255

CN0

OCR

30%

MOTOR DC


36/45

255

CN0

OCR OCR OCR

10%

MOTOR DC


37/45

PWM :

N (1, 8, 64, 256, 1024).

D = OCR

256

100


38/45

C 0 M PM

#

# PM (PINA & 3)

()

DDRA=000;

PORA = 003; /* */

PORB=000;DDRB=008; /*OC0 */

CCR0=06B;

(1)

PA0

PA5

PA7

PA1

PA2

PA3

PA4

PA6

PB0

PB5

PB7

PB1

PB2

PB3 (OC0)

PB4

PB6

PWM

OUTPUT

(PM)

0: OCR0=25; /*10 % */

;

1: OCR0=76; /*30% */

;

2: OCR0=128; /*50% */;

3: OCR0=204; /*80% */

;

:

;

PC0

PC7

PC2

PC6

PC5

PC4

PC3

PC1

PC7

PD0

PA5

PD1

PD2

PD3

PD4

PD6

GND

C 1 M PM


39/45

#

# PM (PINA & 3) ()

PORA = 003; /* */

DDRD = 020; /*OC1A */

CCR1A = 091;/* A /CCR1B = 002; /* / 8 */

(1)

PA0

PA5

PA7

PA1

PA2

PA3

PA4

PA6

C 1 M PM

(PM)

0: OCR1A = 25; /*10 % */

;

1: OCR1A = 51; /*20% */

;

2: OCR1A = 76; /*30% */

;

3: OCR1A = 102; /*40% */

;

:

PD0

PD5 (OC1A)

PD1

PD2

PD3

PD4

PD6

PWM

OUTPUT


40/45

4. 0 M CC

(F )


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OCR OCR OCR

TOP = OCR

255

CN0

PERIODE = 2 * OCR * 1FREKWENSI = F

2*N * (1 + OCR)

N = (1, 8, 64, 256, 1024).

OCR = F1/2F

C = 26 H


42/45

TOP = OCR0CN0

() 10.800

B OCR0 ?

OCR = F1/2F

OCR = 10800/2*26 = 54

OCR0 OCR0 OCR0 OCR0 OCR0 OCR0255

6 (1)


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#

# CC (PINA & 3)

()

DDRA=000;

PORA = 003; /* */

PORB=000;

DDRB=008;

CCR0=01D;

(PM)

0: OCR0=25; //207H

;

1: OCR0=76; //70H

;

2: OCR0=128; //41H;

3: OCR0=204; //26H

;

CN0=000;

OCR0=05;

:

;


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PA0

PA5

PA7

PA1

PA2

PA3

PA4

PA6

PB0

PB5

PB7

PB1

PB2

PB3 (OC0)

PB4

PB6

CTC

OUTPUT

PC0

PC7

PC2

PC6

PC5

PC4

PC3

PC1

PC7

PD0

PA5

PD1

PD2

PD3

PD4

PD6

GND

AVCC


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dasar avr timer

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