added chapter 01 lessons

Author: Dentrax

Chapter 01 - Basics/01-bare-minimum.asm

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+; ====================================================
+; AVR-Programming-with-Assembly Copyright(C) 2017 Furkan Türkal
+; This program comes with ABSOLUTELY NO WARRANTY; This is free software,
+; and you are welcome to redistribute it under certain conditions; See
+; file LICENSE, which is part of this source code package, for details.
+; ====================================================
+
+; Example : Purpose of the Assembly example
+
+; Ports   : Required ports

Chapter 01 - Basics/02-org-0-main.asm

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+; ====================================================
+; DLL-Injection-with-Assembly Copyright(C) 2017 Furkan Türkal
+; This program comes with ABSOLUTELY NO WARRANTY; This is free software,
+; and you are welcome to redistribute it under certain conditions; See
+; file LICENSE, which is part of this source code package, for details.
+; ====================================================
+
+; Example	: Purpose of the ".org 0" (Indispensable)
+
+; The command at the 0th place (also known as ".org 0"), is the first executed command when the first time it is started or reset								
+
+.org 0				; The 0th address in the program memory, allows the next command to be written.
+	rjmp main		; Redirecting to main (or whatever you want) which we want to work first.
+
+main
+    ;Codes

Chapter 01 - Basics/03-led-activate.asm

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+; ====================================================
+; DLL-Injection-with-Assembly Copyright(C) 2017 Furkan Türkal
+; This program comes with ABSOLUTELY NO WARRANTY; This is free software,
+; and you are welcome to redistribute it under certain conditions; See
+; file LICENSE, which is part of this source code package, for details.
+; ====================================================
+
+; Example	: Activate the LED if button pressed
+
+; Ports		: LED		-> PORTB's 5th pin
+ 
+.org 0
+	rjmp main
+	
+main:
+	ldi r16, 0x20	; 0x20=0010 0000 -> PORTB nin 5. pinini output yapmak istiyoruz, o nedenle 5. bit 1
+	out DDRB, r16	; PortB nin data direction registeri DDRB ye r16 daki degeri yaziyoruz
+   
+loop_main:
+	sbi PORTB, 5	; PORTB nin 5. pinini lojik 1 yapiyoruz yani set ediyoruz ve led yaniyor.
+	rjmp loop_main	; Programin loop_main etiketine giderek sonsuz dongude calismasini sagliyoruz

Chapter 01 - Basics/04-led-button.asm

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+; ====================================================
+; DLL-Injection-with-Assembly Copyright(C) 2017 Furkan Türkal
+; This program comes with ABSOLUTELY NO WARRANTY; This is free software,
+; and you are welcome to redistribute it under certain conditions; See
+; file LICENSE, which is part of this source code package, for details.
+; ====================================================
+
+; Example	: Activate the LED if button pressed
+
+; Ports		: LED		-> PORTB's 5th pin
+;			: Button	-> PORTB's 6th pin		
+
+.org 0
+	rjmp main
+
+main:
+	ldi r16, 0x20	 ; Set PORTB's 5th pin to output mode [0x20 = 0010 0000, r16 = PORTB]
+	out DDRB, r16	 ; Write the r16's value at the PORTB's DDRB (DataDirectionRegister)
+	sbi PORTB, 6	 ; Activate the PB6's pull-up resistor. When you press the button, you will read 0, else you will read 1
+
+loop_main:
+	sbis PINB, 6	 ; If PB6 pin's value == 1 (button_not_pressed), skip next command
+	rjmp button_led	 ; If PB6 pin's value == 0 (button_pressed), dont skip and execute command
+	cbi PORTB, 5	 ; Deactivate the LED If button is not pressed
+	rjmp loop_main   ; Go to loop_button tag via RelativeJump and make it work in an infinite loop
+
+button_led:
+	sbi PORTB, 5	 ; If button is pressed, activate the LED 
+	rjmp loop_main   ; Infinite loop

Chapter 01 - Basics/05-led-blink.asm

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+; ====================================================
+; DLL-Injection-with-Assembly Copyright(C) 2017 Furkan Türkal
+; This program comes with ABSOLUTELY NO WARRANTY; This is free software,
+; and you are welcome to redistribute it under certain conditions; See
+; file LICENSE, which is part of this source code package, for details.
+; ====================================================
+
+; Example	: Blink the LED at intervals of about 700 ms.
+
+; Ports		: LED		-> PORTB's 5th pin
+
+.org 0
+   rjmp main
+
+main:
+   ldi r16, 0x20 	; Set PORTB's 5th pin to output mode [0x20 = 0010 0000, r16 = PORTB]
+   out DDRB, r16	; Write the r16's value at the PORTB's DDRB (DataDirectionRegister)
+   clr r17			; Using r17 as a tempory to activate/deactivate the LED
+
+loop_main:
+   eor r17, r16 	; XOR the r16's unchanged 0x20 data with r17 (this command will change the 5th bit with 1 and 0, on every tick) 
+   out PORTB, r17 	; Write the r17's value at the PORTB
+   call delay_ms	; Call the delay function
+   rjmp loop_main 	; Go to loop_main tag via RelativeJump and make it work in an infinite loop
+
+delay_ms:			; Delay function (700ms)
+   push r16			; We need to use loop_main's r16 and r17's values in delay_ms function
+   push r17			; Using the push command, we record the values inside these registers into stack
+   
+   ldi r16, 0x40 	; Run the loop 0x400000 times
+   ldi r17, 0x00 	; Run the ~12 million command cycle
+   ldi r18, 0x00 	; ~0.7s time delay will be obtained for 16Mhz working frequency
+
+_w0:
+   dec r18			; Decrement by 1 the r18's value 
+   brne _w0			; If the result of reduction is not 0, callback _w0 branch
+   dec r17			; Decrement by 1 the r17's value 
+   brne _w0			; If the result of reduction is not 0, callback _w0 branch
+   dec r16			; Decrement by 1 the r16's value 
+   brne _w0			; If the result of reduction is not 0, return _w0 branch
+   pop r17			; Pop the latest pushed r17 before returning from function
+   pop r16			; Pop the latest pushed r16 before returning from function
+   ret				; Return from the function