1. (6. Sunu) (AVR Assembly Örnekleri)
BM-305
Mikrodenetleyiciler
Güz 2016
(6. Sunu) (AVR Assembly Örnekleri)
(Yrd. Doç. Dr. Deniz Dal)

2. Geçici Anahtar ile LED Kontrolü (Dijital Giriş ve Çıkış)

3. Geçici Anahtar ile LED Kontrolü (Dijital Giriş ve Çıkış) (Arduino)/*
Turns on and off a light emitting diode(LED) connected to digital
pin 13, when pressing a pushbutton attached to pin 2. */
const int buttonPin = 2;//the number of the pushbutton pin
const int ledPin = 13;//the number of the LED pin
int buttonState = 0;//variable for reading the pushbutton status
void setup() {
pinMode(ledPin, OUTPUT);//initialize the LED pin as an output
pinMode(buttonPin, INPUT);//initialize the pushbutton pin as an input }
void loop() {
//read the state of the pushbutton value
buttonState = digitalRead(buttonPin);
//check if the pushbutton is pressed
//if it is, the buttonState is HIGH
if (buttonState == HIGH)
digitalWrite(ledPin, HIGH);//turn LED on
else
digitalWrite(ledPin, LOW);//turn LED off

4. Geçici Anahtar ile LED Kontrolü (Dijital Giriş ve Çıkış) (Arduino)

5. Geçici Anahtar ile LED Kontrolü (Dijital Giriş ve Çıkış) (AVR C)/*
Led connected to Digital Pin 13 (PORTB.5)
Pushbutton switch connected to Digital Pin 2 (PORTD.2) */
#include <avr/io.h>
int main() {
// Setup //
DDRB |= (1 << 5); //Set PORTB.5 as output
PORTB &= ~(1 << 5);//Turn led off
DDRD &= ~(1 << 2); //Set PORTD.2 as input
// Loop //
while(1)
if((PIND & (1 << 2)) == 0)
else
PORTB |= (1 << 5); //Turn led on }
return 0;

6. Geçici Anahtar ile LED Kontrolü (Dijital Giriş ve Çıkış) (AVR C)

7. Geçici Anahtar ile LED Kontrolü (AVR Assembly) (Button.asm)
Bu program kaç buyruk/komut içeriyor?
Her bir buyruk/komut kaç byte lık veri içeriyor?
Bu AVR Assembly programı toplamda kaç byte lık veri içeriyor?
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;When the button is pressed, the led is turned on ;
;Led connected to Digital Pin 13 (PORTB.5) ;
;Pushbutton switch connected to Digital Pin 2 (PORTD.2);
.INCLUDE "m328pdef.inc";Header for ATMEGA328P
setup:
LDI R16,0x ;LoaD Immeadiate value to R16
OUT DDRB,R ;Set PORTB.5 as output
LDI R16,0x ;LoaD Immeadiate value to R16
OUT PORTB,R ;Turn led off
OUT DDRD,R ;Set PORTB.2 as input
loop:
IN R16,PIND ;Read PORTD pin values and store them in R16
ANDI R16,0x ;AND Immediate
BRNE elseLabel ;BRanch Not Equal
ifLabel:
RJMP ifEndLabel ;Relative JuMP
elseLabel:
OUT PORTB,R ;Turn led on
ifEndLabel:
RJMP loop ;Relative JuMP
Bu program nereye yüklenecek?

8. Geçici Anahtar ile LED Kontrolü (AVR Assembly) (Button.asm)

9. Merhaba Dünya (Digital Write with Delay) (Arduino)
//Turns on an LED on for one second, then off for one second, repeatedly
//setup function runs once when you press reset or power the board
void setup() {
//initialize digital pin LED_BUILTIN as an output
pinMode(LED_BUILTIN, OUTPUT); }
//loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH);//turn the LED on (HIGH is the voltage level)
delay(1000); //wait for a second
digitalWrite(LED_BUILTIN, LOW); //turn the LED off by making the voltage LOW

10. Merhaba Dünya (Digital Write with Delay) (AVR C) (Delay is Generated by Timer 1 in Normal Mode)
//Turn the led on and off for 1 second using Timer 1 in Normal Mode
//Clock Frequency (Fcpu)=16 MHz, Prescaler=1024
#include <avr/io.h>
int main() {
DDRB|=(1<<5);//Set Pin 13 as OUTPUT
PORTB&=~(1<<5);//Set Pin 13 as LOW
TCCR1B|=((1<<CS12)|(1<<CS10));//Set Timer 1 scaler as Fcpu/1024
while(1)
TCNT1=49911;//
while((TIFR1&(1<<TOV1))==0);//Polling
TIFR1|=(1<<TOV1);//Clear the overflow flag??
PORTB^=(1<<5);//Toogle Pin 13 }
return 0;

11. Merhaba Dünya (Digital Write with Delay) (AVR C) (Delay is Generated by Timer 1 in Normal Mode)

12. Merhaba Dünya (Digital Write with Delay) (AVR Assembly) (HelloWorld
Merhaba Dünya (Digital Write with Delay) (AVR Assembly) (HelloWorld.asm) (Delay is Generated by Timer 1 in Normal Mode)
Bu program kaç buyruk/komut içeriyor?
Her bir buyruk/komut kaç byte lık veri içeriyor?
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Turn the led on and off for 1 second using Timer 1 in Normal Mode;
;Clock frequency (Fcpu)=16 MHz, Prescaler= ;
;Led connected to Digital Pin 13 (PORTB.5) ;
.INCLUDE "m328pdef.inc";Header for ATMEGA328P
setup:
LDI R16,0x ;LoaD Immeadiate value to R16
OUT DDRB,R ;Set PORTB.5 as output
LDI R16,0x ;LoaD Immeadiate value to R16
OUT PORTB,R ;Turn led off
;No action is required for Normal Mode
LDI R16,0x ;Turn CS12 and CS10 on
STS TCCR1B,R ;STore direct to data Space
;Set Timer 1 prescaler as Fcpu/1024
loop:
LDI R17,HIGH(49911);Load 0xC2 to R17
LDI R16,LOW(49911) ;Load 0xF7 to R16
STS TCNT1H,R ;STore direct to data Space
STS TCNT1L,R ;STore direct to data Space
pollingLabel:
IN R16,TIFR ;Read the flags
ANDI R16,0x ;Check if the TOV1 flag is 0
BREQ pollingLabel ;BRanch EQual
ORI R16,0x ;OR Immediate
OUT TIFR1,R ;Clear TOV1 flag by setting
IN R16,PORTB ;Read PORTB pins
LDI R17, 0x ;LoaD Immeadiate value to R17
EOR R16,R ;Exclusive OR
OUT PORTB,R ;Toggle Pin 13
RJMP loop ;Relative JuMP
Bu AVR Assembly programı toplamda kaç byte lık veri içeriyor?
Bu program nereye yüklenecek?

13. Merhaba Dünya (Digital Write with Delay) (AVR Assembly) (HelloWorld
Merhaba Dünya (Digital Write with Delay) (AVR Assembly) (HelloWorld.asm) (Delay is Generated by Timer 1 in Normal Mode)

14. Merhaba Dünya (Digital Write with Delay Function) (AVR C) (Delay is Generated by Timer 1 in Normal Mode)
//Turn the led on and off for n seconds using Timer 1 in Normal Mode
//Clock Frequency Fcpu=16 MHz, Prescaler=1024
#include <avr/io.h>
void DelayNSecond(int n);//Function Prototype
int main() {
DDRB|=(1<<5);//Set Pin 13 as OUTPUT
TCCR1B|=((1<<CS12)|(1<<CS10));//Set Timer 1 scaler as Fcpu/1024
while(1)
PORTB&=~(1<<5);//Set Pin 13 as LOW
DelayNSecond(5);
PORTB|=(1<<5);//Set Pin 13 as HIGH }
return 0;
void DelayNSecond(int n)//Function Definition
for(int i=1;i<=n;i++)
TCNT1=49911;//
while((TIFR1&(1<<TOV1))==0);//Polling
TIFR1|=(1<<TOV1);//Clear the overflow flag

15. Merhaba Dünya (Digital Write with Delay Function) (AVR Assembly) (HelloWorld.asm) (Delay is Generated by Timer 1 in Normal Mode)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Turn the led on and off for n seconds using Timer 1 in Normal Mode;
;Clock frequency Fcpu=16 MHz, Prescaler= ;
;Led connected to Digital Pin 13 (PORTB.5) ;
.INCLUDE "m328pdef.inc";Header for ATMEGA328P
setup:
;Initialize Stack Pointer
LDI R16,LOW(RAMEND)
OUT SPL,R ;Stack Pointer Low
LDI R16,HIGH(RAMEND)
OUT SPH,R ;Stack Pointer High
;Set PORTB.5 as output
LDI R16,0x20
OUT DDRB,R16
;No action is required for Normal Mode
;Set Timer 1 prescaler as Fcpu/1024
LDI R16,0x ;Turn CS12 and CS10 on
STS TCCR1B,R ;STore direct to data Space
;Set N as 5 seconds
LDI R18,0x05
loop:
;Turn led off
LDI R16,0x00
OUT PORTB,R16
RCALL delayNseconds ;Relative CALL
;Turn led on
RJMP loop ;Relative JuMP
;Delay subroutine
delayNseconds:
PUSH R18
delay1sec:
LDI R17,HIGH(49911);Load 0xC2 to R17
LDI R16,LOW(49911) ;Load 0xF7 to R16
STS TCNT1H,R ;STore direct to data Space
STS TCNT1L,R ;STore direct to data Space
pollingLabel:
IN R16,TIFR ;Read the flags
ANDI R16,0x ;Check if the TOV1 flag is 0
BREQ pollingLabel ;BRanch EQual
ORI R16,0x ;OR Immediate
OUT TIFR1,R ;Clear TOV1 flag by setting
DEC R18
BRNE delay1sec
POP R18
RET

16. Merhaba Dünya (Digital Write with Delay Function) (AVR Assembly) (HelloWorld.asm) (Delay is Generated by Timer 1 in Normal Mode)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Turn the led on and off for n seconds using Timer 1 in Normal Mode;
;Clock frequency Fcpu=16 MHz, Prescaler= ;
;Led connected to Digital Pin 13 (PORTB.5) ;
.INCLUDE "m328pdef.inc";Header for ATMEGA328P
setup:
;Initialize Stack Pointer
LDI R16,low(RAMEND)
OUT SPL,R ;Stack Pointer Low
LDI R16,high(RAMEND)
OUT SPH,R ;Stack Pointer High
;Set PORTB.5 as output
LDI R16,0x20
OUT DDRB,R16
;No action is required for Normal Mode
;Set Timer 1 prescaler as Fcpu/1024
LDI R16,0x ;Turn CS12 and CS10 on
STS TCCR1B,R ;STore direct to data Space
;Set N as 5 seconds
LDI R18,0x05
loop:
;Turn led off
LDI R16,0x00
OUT PORTB,R16
RCALL delayNseconds ;Relative CALL
;Turn led on
RJMP loop ;Relative JuMP
;Delay subroutine
delayNseconds:
PUSH R18
delay1sec:
LDI R17,HIGH(49911);Load 0xC2 to R17
LDI R16,LOW(49911) ;Load 0xF7 to R16
STS TCNT1H,R ;STore direct to data Space
STS TCNT1L,R ;STore direct to data Space
pollingLabel:
IN R16,TIFR ;Read the flags
ANDI R16,0x ;Check if the TOV1 flag is 0
BREQ pollingLabel ;BRanch EQual
ORI R16,0x ;OR Immediate
OUT TIFR1,R ;Clear TOV1 flag by setting
DEC R18
BRNE delay1sec
POP R18
RET

17. Merhaba Dünya (Digital Write with Delay Function) (AVR Assembly) (HelloWorld.asm) (Delay is Generated by Timer 1 in Normal Mode)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;Turn the led on and off for n seconds using Timer 1 in Normal Mode;
;Clock frequency Fcpu=16 MHz, Prescaler= ;
;Led connected to Digital Pin 13 (PORTB.5) ;
.INCLUDE "m328pdef.inc";Header for ATMEGA328P
setup:
;Initialize Stack Pointer
LDI R16,low(RAMEND)
OUT SPL,R ;Stack Pointer Low
LDI R16,high(RAMEND)
OUT SPH,R ;Stack Pointer High
;Set PORTB.5 as output
LDI R16,0x20
OUT DDRB,R16
;No action is required for Normal Mode
;Set Timer 1 prescaler as Fcpu/1024
LDI R16,0x ;Turn CS12 and CS10 on
STS TCCR1B,R ;STore direct to data Space
;Set N as 5 seconds
LDI R18,0x05
loop:
;Turn led off
LDI R16,0x00
OUT PORTB,R16
RCALL delayNseconds ;Relative CALL
;Turn led on
RJMP loop ;Relative JuMP
;Delay subroutine
delayNseconds:
PUSH R18
delay1sec:
LDI R17,HIGH(49911);Load 0xC2 to R17
LDI R16,LOW(49911) ;Load 0xF7 to R16
STS TCNT1H,R ;STore direct to data Space
STS TCNT1L,R ;STore direct to data Space
pollingLabel:
IN R16,TIFR ;Read the flags
ANDI R16,0x ;Check if the TOV1 flag is 0
BREQ pollingLabel ;BRanch EQual
ORI R16,0x ;OR Immediate
OUT TIFR1,R ;Clear TOV1 flag by setting
DEC R18
BRNE delay1sec
POP R18
RET