P4 Changed Interrupt PortB -> PortC; Unfinished implementation of PortB for teens

2023-12-06 14:14:59 +01:00
parent c6080d47db
commit ee22ff0819
32 changed files with 1904 additions and 152 deletions
--- a/Abgaben/P3/Hazinedar_3108590_ARBKVS_3.c
+++ b/Abgaben/P3/Hazinedar_3108590_ARBKVS_3.c
@@ -0,0 +1,58 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#define F_CPU 16000000UL    // 16MHz clock frequency
+#define LED_PIN PD0         // LED is connected to Pin D0
+
+volatile uint32_t systemClock = 0;
+
+void setupTimer0() {
+	// Configure Timer0 for CTC mode
+	TCCR0A |= (1 << WGM01);                 // Set Waveform Generation Mode bits for CTC
+	TCCR0B |= (1 << CS01) | (1 << CS00);    // Set prescaler to 64
+	OCR0A = 249;                            // Set Output Compare Register to 249 for ~1ms interrupt
+	TIMSK0 |= (1 << OCIE0A);                // Enable Timer0 Output Compare A Match interrupt
+}
+
+// Timer0 Output Compare A Match Interrupt Service Routine
+ISR(TIMER0_COMPA_vect) {
+	systemClock++;  // Increment the milliseconds counter
+}
+
+uint32_t getSystemClock(){
+	cli();
+	uint32_t tempSystemClock = systemClock;
+	sei();
+	return tempSystemClock;
+}
+
+void waitFor(uint32_t ms) {
+	uint32_t endTime = getSystemClock() + ms;
+	while (getSystemClock() != endTime);
+}
+
+void waitUntil(uint32_t ms) {
+	while (getSystemClock() != ms);
+}
+
+void initializeLED() {
+	DDRD |= (1 << LED_PIN);  // Set LED_PIN as an output
+}
+
+void toggleLED() {
+	PORTD ^= (1 << LED_PIN); // Toggle the LED
+}
+
+int main(void) {
+	initializeLED();    // Initialize the LED pin
+	setupTimer0();      // Setup Timer0
+	//sei();              // Enable global interrupts
+
+	waitUntil(500);     // Wait until 500 ms have passed
+	toggleLED();        // Toggle the LED to turn it on
+
+	while (1) {
+		waitFor(500);   // Wait for 500 ms
+		toggleLED();    // Toggle the LED
+	}
+}
--- a/P3/.vs/P3/v14/.atsuo
+++ b/P3/.vs/P3/v14/.atsuo
--- a/P3/P3/Debug/P3.elf
+++ b/P3/P3/Debug/P3.elf
--- a/P3/P3/Debug/P3.hex
+++ b/P3/P3/Debug/P3.hex
@@ -6,22 +6,22 @@
 :100050000C9446000C9446000C9446000C94460008
 :100060000C9446000C94460011241FBECFEFD8E03C
 :10007000DEBFCDBF21E0A0E0B1E001C01D92A43001
-:10008000B207E1F70E94B2000C94C8000C94000083
+:10008000B207E1F70E94B7000C94CC000C9400007A
 :1000900084B5826084BD85B5836085BD89EF87BDE9
 :1000A000EEE6F0E080818260808308951F920F92D7
 :1000B0000FB60F9211248F939F93AF93BF938091AC
 :1000C000000190910101A0910201B09103010196FC
 :1000D000A11DB11D8093000190930101A093020125
 :1000E000B0930301BF91AF919F918F910F900FBE7D
-:1000F0000F901F9018950F931F930091000110917E
-:1001000001012091020130910301AB01BC01400FBC
-:10011000511F621F731F8091000190910101A091F6
-:100120000201B091030184179507A607B70798F35A
-:100130001F910F910895AB01BC0180910001909136
-:100140000101A0910201B091030184179507A60750
-:10015000B70798F30895509A08959BB181E08927D5
-:100160008BB908950E94AB000E944800789464EF18
-:1001700071E080E090E00E949B000E94AD0064EF7F
-:1001800071E080E090E00E947B000E94AD00F7CF1C
-:04019000F894FFCF11
+:1000F0000F901F901895F894609100017091010184
+:10010000809102019091030178940895CF92DF923B
+:10011000EF92FF926B017C010E947B00C60ED71EFE
+:10012000E81EF91E0E947B00C616D706E806F906EF
+:10013000C9F7FF90EF90DF90CF900895CF92DF92B4
+:10014000EF92FF926B017C010E947B006C157D0594
+:100150008E059F05C9F7FF90EF90DF90CF9008952F
+:10016000509A08959BB181E089278BB908950E9428
+:10017000B0000E94480064EF71E080E090E00E94CF
+:100180009E000E94B20064EF71E080E090E00E9467
+:0C01900086000E94B200F7CFF894FFCF69
 :00000001FF
--- a/P3/P3/Debug/P3.lss
+++ b/P3/P3/Debug/P3.lss
@@ -3,31 +3,31 @@ P3.elf:     file format elf32-avr

 Sections:
 Idx Name          Size      VMA       LMA       File off  Algn
-  0 .data         00000000  00800100  00800100  00000208  2**0
+  0 .data         00000000  00800100  00800100  00000210  2**0
                  CONTENTS, ALLOC, LOAD, DATA
-  1 .text         00000194  00000000  00000000  00000074  2**1
+  1 .text         0000019c  00000000  00000000  00000074  2**1
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
-  2 .bss          00000004  00800100  00800100  00000208  2**0
+  2 .bss          00000004  00800100  00800100  00000210  2**0
                  ALLOC
-  3 .comment      00000030  00000000  00000000  00000208  2**0
+  3 .comment      00000030  00000000  00000000  00000210  2**0
                  CONTENTS, READONLY
-  4 .note.gnu.avr.deviceinfo 00000040  00000000  00000000  00000238  2**2
+  4 .note.gnu.avr.deviceinfo 00000040  00000000  00000000  00000240  2**2
                  CONTENTS, READONLY
-  5 .debug_aranges 00000050  00000000  00000000  00000278  2**0
+  5 .debug_aranges 00000058  00000000  00000000  00000280  2**0
                  CONTENTS, READONLY, DEBUGGING
-  6 .debug_info   000007d8  00000000  00000000  000002c8  2**0
+  6 .debug_info   0000080e  00000000  00000000  000002d8  2**0
                  CONTENTS, READONLY, DEBUGGING
-  7 .debug_abbrev 000006b6  00000000  00000000  00000aa0  2**0
+  7 .debug_abbrev 000006c5  00000000  00000000  00000ae6  2**0
                  CONTENTS, READONLY, DEBUGGING
-  8 .debug_line   000002b4  00000000  00000000  00001156  2**0
+  8 .debug_line   000002d6  00000000  00000000  000011ab  2**0
                  CONTENTS, READONLY, DEBUGGING
-  9 .debug_frame  000000b0  00000000  00000000  0000140c  2**2
+  9 .debug_frame  000000dc  00000000  00000000  00001484  2**2
                  CONTENTS, READONLY, DEBUGGING
- 10 .debug_str    000003c7  00000000  00000000  000014bc  2**0
+ 10 .debug_str    000003e6  00000000  00000000  00001560  2**0
                  CONTENTS, READONLY, DEBUGGING
- 11 .debug_loc    00000092  00000000  00000000  00001883  2**0
+ 11 .debug_loc    00000197  00000000  00000000  00001946  2**0
                  CONTENTS, READONLY, DEBUGGING
- 12 .debug_ranges 00000040  00000000  00000000  00001915  2**0
+ 12 .debug_ranges 00000048  00000000  00000000  00001add  2**0
                  CONTENTS, READONLY, DEBUGGING

 Disassembly of section .text:
@@ -81,8 +81,8 @@ Disassembly of section .text:
  7e:	a4 30       	cpi	r26, 0x04	; 4
  80:	b2 07       	cpc	r27, r18
  82:	e1 f7       	brne	.-8      	; 0x7c <.do_clear_bss_loop>
-  84:	0e 94 b2 00 	call	0x164	; 0x164 <main>
-  88:	0c 94 c8 00 	jmp	0x190	; 0x190 <_exit>
+  84:	0e 94 b7 00 	call	0x16e	; 0x16e <main>
+  88:	0c 94 cc 00 	jmp	0x198	; 0x198 <_exit>

 0000008c <__bad_interrupt>:
  8c:	0c 94 00 00 	jmp	0	; 0x0 <__vectors>
@@ -149,106 +149,124 @@ ISR(TIMER0_COMPA_vect) {
  f2:	1f 90       	pop	r1
  f4:	18 95       	reti

-000000f6 <waitFor>:
+000000f6 <getSystemClock>:
+
+uint32_t getSystemClock(){
+	cli();
+  f6:	f8 94       	cli
+	uint32_t tempSystemClock = systemClock;
+  f8:	60 91 00 01 	lds	r22, 0x0100	; 0x800100 <_edata>
+  fc:	70 91 01 01 	lds	r23, 0x0101	; 0x800101 <_edata+0x1>
+ 100:	80 91 02 01 	lds	r24, 0x0102	; 0x800102 <_edata+0x2>
+ 104:	90 91 03 01 	lds	r25, 0x0103	; 0x800103 <_edata+0x3>
+	sei();
+ 108:	78 94       	sei
+	return tempSystemClock;
+}
+ 10a:	08 95       	ret
+
+0000010c <waitFor>:

 void waitFor(uint32_t ms) {
-  f6:	0f 93       	push	r16
-  f8:	1f 93       	push	r17
-	uint32_t endTime = systemClock + ms;
-  fa:	00 91 00 01 	lds	r16, 0x0100	; 0x800100 <_edata>
-  fe:	10 91 01 01 	lds	r17, 0x0101	; 0x800101 <_edata+0x1>
- 102:	20 91 02 01 	lds	r18, 0x0102	; 0x800102 <_edata+0x2>
- 106:	30 91 03 01 	lds	r19, 0x0103	; 0x800103 <_edata+0x3>
- 10a:	ab 01       	movw	r20, r22
- 10c:	bc 01       	movw	r22, r24
- 10e:	40 0f       	add	r20, r16
- 110:	51 1f       	adc	r21, r17
- 112:	62 1f       	adc	r22, r18
- 114:	73 1f       	adc	r23, r19
-	while (systemClock < endTime);
- 116:	80 91 00 01 	lds	r24, 0x0100	; 0x800100 <_edata>
- 11a:	90 91 01 01 	lds	r25, 0x0101	; 0x800101 <_edata+0x1>
- 11e:	a0 91 02 01 	lds	r26, 0x0102	; 0x800102 <_edata+0x2>
- 122:	b0 91 03 01 	lds	r27, 0x0103	; 0x800103 <_edata+0x3>
- 126:	84 17       	cp	r24, r20
- 128:	95 07       	cpc	r25, r21
- 12a:	a6 07       	cpc	r26, r22
- 12c:	b7 07       	cpc	r27, r23
- 12e:	98 f3       	brcs	.-26     	; 0x116 <waitFor+0x20>
+ 10c:	cf 92       	push	r12
+ 10e:	df 92       	push	r13
+ 110:	ef 92       	push	r14
+ 112:	ff 92       	push	r15
+ 114:	6b 01       	movw	r12, r22
+ 116:	7c 01       	movw	r14, r24
+	uint32_t endTime = getSystemClock() + ms;
+ 118:	0e 94 7b 00 	call	0xf6	; 0xf6 <getSystemClock>
+ 11c:	c6 0e       	add	r12, r22
+ 11e:	d7 1e       	adc	r13, r23
+ 120:	e8 1e       	adc	r14, r24
+ 122:	f9 1e       	adc	r15, r25
+	while (getSystemClock() != endTime);
+ 124:	0e 94 7b 00 	call	0xf6	; 0xf6 <getSystemClock>
+ 128:	c6 16       	cp	r12, r22
+ 12a:	d7 06       	cpc	r13, r23
+ 12c:	e8 06       	cpc	r14, r24
+ 12e:	f9 06       	cpc	r15, r25
+ 130:	c9 f7       	brne	.-14     	; 0x124 <waitFor+0x18>
 }
- 130:	1f 91       	pop	r17
- 132:	0f 91       	pop	r16
- 134:	08 95       	ret
+ 132:	ff 90       	pop	r15
+ 134:	ef 90       	pop	r14
+ 136:	df 90       	pop	r13
+ 138:	cf 90       	pop	r12
+ 13a:	08 95       	ret

-00000136 <waitUntil>:
+0000013c <waitUntil>:

 void waitUntil(uint32_t ms) {
- 136:	ab 01       	movw	r20, r22
- 138:	bc 01       	movw	r22, r24
-	while (systemClock < ms);
- 13a:	80 91 00 01 	lds	r24, 0x0100	; 0x800100 <_edata>
- 13e:	90 91 01 01 	lds	r25, 0x0101	; 0x800101 <_edata+0x1>
- 142:	a0 91 02 01 	lds	r26, 0x0102	; 0x800102 <_edata+0x2>
- 146:	b0 91 03 01 	lds	r27, 0x0103	; 0x800103 <_edata+0x3>
- 14a:	84 17       	cp	r24, r20
- 14c:	95 07       	cpc	r25, r21
- 14e:	a6 07       	cpc	r26, r22
- 150:	b7 07       	cpc	r27, r23
- 152:	98 f3       	brcs	.-26     	; 0x13a <waitUntil+0x4>
+ 13c:	cf 92       	push	r12
+ 13e:	df 92       	push	r13
+ 140:	ef 92       	push	r14
+ 142:	ff 92       	push	r15
+ 144:	6b 01       	movw	r12, r22
+ 146:	7c 01       	movw	r14, r24
+	while (getSystemClock() != ms);
+ 148:	0e 94 7b 00 	call	0xf6	; 0xf6 <getSystemClock>
+ 14c:	6c 15       	cp	r22, r12
+ 14e:	7d 05       	cpc	r23, r13
+ 150:	8e 05       	cpc	r24, r14
+ 152:	9f 05       	cpc	r25, r15
+ 154:	c9 f7       	brne	.-14     	; 0x148 <waitUntil+0xc>
 }
- 154:	08 95       	ret
+ 156:	ff 90       	pop	r15
+ 158:	ef 90       	pop	r14
+ 15a:	df 90       	pop	r13
+ 15c:	cf 90       	pop	r12
+ 15e:	08 95       	ret

-00000156 <initializeLED>:
+00000160 <initializeLED>:

 void initializeLED() {
 	DDRD |= (1 << LED_PIN);  // Set LED_PIN as an output
- 156:	50 9a       	sbi	0x0a, 0	; 10
- 158:	08 95       	ret
+ 160:	50 9a       	sbi	0x0a, 0	; 10
+ 162:	08 95       	ret

-0000015a <toggleLED>:
+00000164 <toggleLED>:
 }

 void toggleLED() {
 	PORTD ^= (1 << LED_PIN); // Toggle the LED
- 15a:	9b b1       	in	r25, 0x0b	; 11
- 15c:	81 e0       	ldi	r24, 0x01	; 1
- 15e:	89 27       	eor	r24, r25
- 160:	8b b9       	out	0x0b, r24	; 11
- 162:	08 95       	ret
+ 164:	9b b1       	in	r25, 0x0b	; 11
+ 166:	81 e0       	ldi	r24, 0x01	; 1
+ 168:	89 27       	eor	r24, r25
+ 16a:	8b b9       	out	0x0b, r24	; 11
+ 16c:	08 95       	ret

-00000164 <main>:
+0000016e <main>:
 }

 int main(void) {
 	initializeLED();    // Initialize the LED pin
- 164:	0e 94 ab 00 	call	0x156	; 0x156 <initializeLED>
+ 16e:	0e 94 b0 00 	call	0x160	; 0x160 <initializeLED>
 	setupTimer0();      // Setup Timer0
- 168:	0e 94 48 00 	call	0x90	; 0x90 <setupTimer0>
-	sei();              // Enable global interrupts
- 16c:	78 94       	sei
+ 172:	0e 94 48 00 	call	0x90	; 0x90 <setupTimer0>
+	//sei();              // Enable global interrupts

 	waitUntil(500);     // Wait until 500 ms have passed
- 16e:	64 ef       	ldi	r22, 0xF4	; 244
- 170:	71 e0       	ldi	r23, 0x01	; 1
- 172:	80 e0       	ldi	r24, 0x00	; 0
- 174:	90 e0       	ldi	r25, 0x00	; 0
- 176:	0e 94 9b 00 	call	0x136	; 0x136 <waitUntil>
+ 176:	64 ef       	ldi	r22, 0xF4	; 244
+ 178:	71 e0       	ldi	r23, 0x01	; 1
+ 17a:	80 e0       	ldi	r24, 0x00	; 0
+ 17c:	90 e0       	ldi	r25, 0x00	; 0
+ 17e:	0e 94 9e 00 	call	0x13c	; 0x13c <waitUntil>
 	toggleLED();        // Toggle the LED to turn it on
- 17a:	0e 94 ad 00 	call	0x15a	; 0x15a <toggleLED>
+ 182:	0e 94 b2 00 	call	0x164	; 0x164 <toggleLED>

 	while (1) {
 		waitFor(500);   // Wait for 500 ms
- 17e:	64 ef       	ldi	r22, 0xF4	; 244
- 180:	71 e0       	ldi	r23, 0x01	; 1
- 182:	80 e0       	ldi	r24, 0x00	; 0
- 184:	90 e0       	ldi	r25, 0x00	; 0
- 186:	0e 94 7b 00 	call	0xf6	; 0xf6 <waitFor>
+ 186:	64 ef       	ldi	r22, 0xF4	; 244
+ 188:	71 e0       	ldi	r23, 0x01	; 1
+ 18a:	80 e0       	ldi	r24, 0x00	; 0
+ 18c:	90 e0       	ldi	r25, 0x00	; 0
+ 18e:	0e 94 86 00 	call	0x10c	; 0x10c <waitFor>
 		toggleLED();    // Toggle the LED
- 18a:	0e 94 ad 00 	call	0x15a	; 0x15a <toggleLED>
- 18e:	f7 cf       	rjmp	.-18     	; 0x17e <main+0x1a>
+ 192:	0e 94 b2 00 	call	0x164	; 0x164 <toggleLED>
+ 196:	f7 cf       	rjmp	.-18     	; 0x186 <main+0x18>

-00000190 <_exit>:
- 190:	f8 94       	cli
+00000198 <_exit>:
+ 198:	f8 94       	cli

-00000192 <__stop_program>:
- 192:	ff cf       	rjmp	.-2      	; 0x192 <__stop_program>
+0000019a <__stop_program>:
+ 19a:	ff cf       	rjmp	.-2      	; 0x19a <__stop_program>
--- a/P3/P3/Debug/P3.map
+++ b/P3/P3/Debug/P3.map
@@ -169,7 +169,7 @@ END GROUP
 .rela.plt
 *(.rela.plt)

-.text           0x00000000      0x194
+.text           0x00000000      0x19c
 *(.vectors)
 .vectors       0x00000000       0x68 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o
                0x00000000                __vector_default
@@ -259,24 +259,27 @@ END GROUP
 .text.__vector_14
                0x000000ac       0x4a main.o
                0x000000ac                __vector_14
- .text.waitFor  0x000000f6       0x40 main.o
-                0x000000f6                waitFor
+ .text.getSystemClock
+                0x000000f6       0x16 main.o
+                0x000000f6                getSystemClock
+ .text.waitFor  0x0000010c       0x30 main.o
+                0x0000010c                waitFor
 .text.waitUntil
-                0x00000136       0x20 main.o
-                0x00000136                waitUntil
+                0x0000013c       0x24 main.o
+                0x0000013c                waitUntil
 .text.initializeLED
-                0x00000156        0x4 main.o
-                0x00000156                initializeLED
+                0x00000160        0x4 main.o
+                0x00000160                initializeLED
 .text.toggleLED
-                0x0000015a        0xa main.o
-                0x0000015a                toggleLED
- .text.main     0x00000164       0x2c main.o
-                0x00000164                main
-                0x00000190                . = ALIGN (0x2)
+                0x00000164        0xa main.o
+                0x00000164                toggleLED
+ .text.main     0x0000016e       0x2a main.o
+                0x0000016e                main
+                0x00000198                . = ALIGN (0x2)
 *(.fini9)
- .fini9         0x00000190        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
-                0x00000190                _exit
-                0x00000190                exit
+ .fini9         0x00000198        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+                0x00000198                _exit
+                0x00000198                exit
 *(.fini9)
 *(.fini8)
 *(.fini8)
@@ -295,11 +298,11 @@ END GROUP
 *(.fini1)
 *(.fini1)
 *(.fini0)
- .fini0         0x00000190        0x4 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+ .fini0         0x00000198        0x4 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
 *(.fini0)
-                0x00000194                _etext = .
+                0x0000019c                _etext = .

-.data           0x00800100        0x0 load address 0x00000194
+.data           0x00800100        0x0 load address 0x0000019c
                [!provide]                PROVIDE (__data_start, .)
 *(.data)
 *(.data*)
@@ -320,8 +323,8 @@ END GROUP
                0x00800100                systemClock
 *(COMMON)
                0x00800104                PROVIDE (__bss_end, .)
-                0x00000194                __data_load_start = LOADADDR (.data)
-                0x00000194                __data_load_end = (__data_load_start + SIZEOF (.data))
+                0x0000019c                __data_load_start = LOADADDR (.data)
+                0x0000019c                __data_load_end = (__data_load_start + SIZEOF (.data))

 .noinit         0x00800104        0x0
                [!provide]                PROVIDE (__noinit_start, .)
@@ -392,42 +395,42 @@ END GROUP
 .debug_sfnames
 *(.debug_sfnames)

-.debug_aranges  0x00000000       0x50
+.debug_aranges  0x00000000       0x58
 *(.debug_aranges)
 .debug_aranges
-                0x00000000       0x50 main.o
+                0x00000000       0x58 main.o

 .debug_pubnames
 *(.debug_pubnames)

-.debug_info     0x00000000      0x7d8
+.debug_info     0x00000000      0x80e
 *(.debug_info .gnu.linkonce.wi.*)
 .debug_info    0x00000000      0x5f4 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o
- .debug_info    0x000005f4      0x1e4 main.o
+ .debug_info    0x000005f4      0x21a main.o

-.debug_abbrev   0x00000000      0x6b6
+.debug_abbrev   0x00000000      0x6c5
 *(.debug_abbrev)
 .debug_abbrev  0x00000000      0x5a2 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o
- .debug_abbrev  0x000005a2      0x114 main.o
+ .debug_abbrev  0x000005a2      0x123 main.o

-.debug_line     0x00000000      0x2b4
+.debug_line     0x00000000      0x2d6
 *(.debug_line .debug_line.* .debug_line_end)
 .debug_line    0x00000000      0x133 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o
- .debug_line    0x00000133      0x181 main.o
+ .debug_line    0x00000133      0x1a3 main.o

-.debug_frame    0x00000000       0xb0
+.debug_frame    0x00000000       0xdc
 *(.debug_frame)
- .debug_frame   0x00000000       0xb0 main.o
+ .debug_frame   0x00000000       0xdc main.o

-.debug_str      0x00000000      0x3c7
+.debug_str      0x00000000      0x3e6
 *(.debug_str)
 .debug_str     0x00000000      0x208 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o
- .debug_str     0x00000208      0x1bf main.o
-                                0x1f3 (size before relaxing)
+ .debug_str     0x00000208      0x1de main.o
+                                0x212 (size before relaxing)

-.debug_loc      0x00000000       0x92
+.debug_loc      0x00000000      0x197
 *(.debug_loc)
- .debug_loc     0x00000000       0x92 main.o
+ .debug_loc     0x00000000      0x197 main.o

 .debug_macinfo
 *(.debug_macinfo)
@@ -447,9 +450,9 @@ END GROUP
 .debug_pubtypes
 *(.debug_pubtypes)

-.debug_ranges   0x00000000       0x40
+.debug_ranges   0x00000000       0x48
 *(.debug_ranges)
- .debug_ranges  0x00000000       0x40 main.o
+ .debug_ranges  0x00000000       0x48 main.o

 .debug_macro
 *(.debug_macro)
--- a/P3/P3/Debug/P3.srec
+++ b/P3/P3/Debug/P3.srec
@@ -7,22 +7,22 @@ S11300400C9446000C9446000C9446000C94460014
 S11300500C9446000C9446000C9446000C94460004
 S11300600C9446000C94460011241FBECFEFD8E038
 S1130070DEBFCDBF21E0A0E0B1E001C01D92A430FD
-S1130080B207E1F70E94B2000C94C8000C9400007F
+S1130080B207E1F70E94B7000C94CC000C94000076
 S113009084B5826084BD85B5836085BD89EF87BDE5
 S11300A0EEE6F0E080818260808308951F920F92D3
 S11300B00FB60F9211248F939F93AF93BF938091A8
 S11300C0000190910101A0910201B09103010196F8
 S11300D0A11DB11D8093000190930101A093020121
 S11300E0B0930301BF91AF919F918F910F900FBE79
-S11300F00F901F9018950F931F930091000110917A
-S113010001012091020130910301AB01BC01400FB8
-S1130110511F621F731F8091000190910101A091F2
-S11301200201B091030184179507A607B70798F356
-S11301301F910F910895AB01BC0180910001909132
-S11301400101A0910201B091030184179507A6074C
-S1130150B70798F30895509A08959BB181E08927D1
-S11301608BB908950E94AB000E944800789464EF14
-S113017071E080E090E00E949B000E94AD0064EF7B
-S113018071E080E090E00E947B000E94AD00F7CF18
-S1070190F894FFCF0D
+S11300F00F901F901895F894609100017091010180
+S1130100809102019091030178940895CF92DF9237
+S1130110EF92FF926B017C010E947B00C60ED71EFA
+S1130120E81EF91E0E947B00C616D706E806F906EB
+S1130130C9F7FF90EF90DF90CF900895CF92DF92B0
+S1130140EF92FF926B017C010E947B006C157D0590
+S11301508E059F05C9F7FF90EF90DF90CF9008952B
+S1130160509A08959BB181E089278BB908950E9424
+S1130170B0000E94480064EF71E080E090E00E94CB
+S11301809E000E94B20064EF71E080E090E00E9463
+S10F019086000E94B200F7CFF894FFCF65
 S9030000FC
--- a/P3/P3/Debug/main.o
+++ b/P3/P3/Debug/main.o
--- a/P3/P3/main.c
+++ b/P3/P3/main.c
@@ -19,13 +19,20 @@ ISR(TIMER0_COMPA_vect) {
 	systemClock++;  // Increment the milliseconds counter
 }

+uint32_t getSystemClock(){
+	cli();
+	uint32_t tempSystemClock = systemClock;
+	sei();
+	return tempSystemClock;
+}
+
 void waitFor(uint32_t ms) {
-	uint32_t endTime = systemClock + ms;
-	while (systemClock < endTime);
+	uint32_t endTime = getSystemClock() + ms;
+	while (getSystemClock() != endTime);
 }

 void waitUntil(uint32_t ms) {
-	while (systemClock < ms);
+	while (getSystemClock() != ms);
 }

 void initializeLED() {
@@ -39,7 +46,7 @@ void toggleLED() {
 int main(void) {
 	initializeLED();    // Initialize the LED pin
 	setupTimer0();      // Setup Timer0
-	sei();              // Enable global interrupts
+	//sei();              // Enable global interrupts

 	waitUntil(500);     // Wait until 500 ms have passed
 	toggleLED();        // Toggle the LED to turn it on
--- a/P4/.vs/P4/v14/.atsuo
+++ b/P4/.vs/P4/v14/.atsuo
--- a/P4/P4.atsln
+++ b/P4/P4.atsln
@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Atmel Studio Solution File, Format Version 11.00
+VisualStudioVersion = 14.0.23107.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{54F91283-7BC4-4236-8FF9-10F437C3AD48}") = "P4", "P4\P4.cproj", "{DCE6C7E3-EE26-4D79-826B-08594B9AD897}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|AVR = Debug|AVR
+		Release|AVR = Release|AVR
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.ActiveCfg = Debug|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Debug|AVR.Build.0 = Debug|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.ActiveCfg = Release|AVR
+		{DCE6C7E3-EE26-4D79-826B-08594B9AD897}.Release|AVR.Build.0 = Release|AVR
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal
--- a/P4/P4/Debug/Makefile
+++ b/P4/P4/Debug/Makefile
@@ -0,0 +1,151 @@
+################################################################################
+# Automatically-generated file. Do not edit!
+################################################################################
+
+SHELL := cmd.exe
+RM := rm -rf
+
+USER_OBJS :=
+
+LIBS := 
+PROJ := 
+
+O_SRCS := 
+C_SRCS := 
+S_SRCS := 
+S_UPPER_SRCS := 
+OBJ_SRCS := 
+ASM_SRCS := 
+PREPROCESSING_SRCS := 
+OBJS := 
+OBJS_AS_ARGS := 
+C_DEPS := 
+C_DEPS_AS_ARGS := 
+EXECUTABLES := 
+OUTPUT_FILE_PATH :=
+OUTPUT_FILE_PATH_AS_ARGS :=
+AVR_APP_PATH :=$$$AVR_APP_PATH$$$
+QUOTE := "
+ADDITIONAL_DEPENDENCIES:=
+OUTPUT_FILE_DEP:=
+LIB_DEP:=
+LINKER_SCRIPT_DEP:=
+
+# Every subdirectory with source files must be described here
+SUBDIRS := 
+
+
+# Add inputs and outputs from these tool invocations to the build variables 
+C_SRCS +=  \
+../keys.c \
+../main.c \
+../sevenseg.c
+
+
+PREPROCESSING_SRCS += 
+
+
+ASM_SRCS += 
+
+
+OBJS +=  \
+keys.o \
+main.o \
+sevenseg.o
+
+OBJS_AS_ARGS +=  \
+keys.o \
+main.o \
+sevenseg.o
+
+C_DEPS +=  \
+keys.d \
+main.d \
+sevenseg.d
+
+C_DEPS_AS_ARGS +=  \
+keys.d \
+main.d \
+sevenseg.d
+
+OUTPUT_FILE_PATH +=P4.elf
+
+OUTPUT_FILE_PATH_AS_ARGS +=P4.elf
+
+ADDITIONAL_DEPENDENCIES:=
+
+OUTPUT_FILE_DEP:= ./makedep.mk
+
+LIB_DEP+= 
+
+LINKER_SCRIPT_DEP+= 
+
+
+# AVR32/GNU C Compiler
+./keys.o: .././keys.c
+	@echo Building file: $<
+	@echo Invoking: AVR/GNU C Compiler : 5.4.0
+	$(QUOTE)C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe$(QUOTE)  -x c -funsigned-char -funsigned-bitfields -DDEBUG  -I"C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include"  -O1 -ffunction-sections -fdata-sections -fpack-struct -fshort-enums -g2 -Wall -mmcu=atmega328p -B "C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\gcc\dev\atmega328p" -c -std=gnu99 -MD -MP -MF "$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -MT"$(@:%.o=%.o)"   -o "$@" "$<" 
+	@echo Finished building: $<
+	
+
+./main.o: .././main.c
+	@echo Building file: $<
+	@echo Invoking: AVR/GNU C Compiler : 5.4.0
+	$(QUOTE)C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe$(QUOTE)  -x c -funsigned-char -funsigned-bitfields -DDEBUG  -I"C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include"  -O1 -ffunction-sections -fdata-sections -fpack-struct -fshort-enums -g2 -Wall -mmcu=atmega328p -B "C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\gcc\dev\atmega328p" -c -std=gnu99 -MD -MP -MF "$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -MT"$(@:%.o=%.o)"   -o "$@" "$<" 
+	@echo Finished building: $<
+	
+
+./sevenseg.o: .././sevenseg.c
+	@echo Building file: $<
+	@echo Invoking: AVR/GNU C Compiler : 5.4.0
+	$(QUOTE)C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe$(QUOTE)  -x c -funsigned-char -funsigned-bitfields -DDEBUG  -I"C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include"  -O1 -ffunction-sections -fdata-sections -fpack-struct -fshort-enums -g2 -Wall -mmcu=atmega328p -B "C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\gcc\dev\atmega328p" -c -std=gnu99 -MD -MP -MF "$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -MT"$(@:%.o=%.o)"   -o "$@" "$<" 
+	@echo Finished building: $<
+	
+
+
+
+
+# AVR32/GNU Preprocessing Assembler
+
+
+
+# AVR32/GNU Assembler
+
+
+
+
+ifneq ($(MAKECMDGOALS),clean)
+ifneq ($(strip $(C_DEPS)),)
+-include $(C_DEPS)
+endif
+endif
+
+# Add inputs and outputs from these tool invocations to the build variables 
+
+# All Target
+all: $(OUTPUT_FILE_PATH) $(ADDITIONAL_DEPENDENCIES)
+
+$(OUTPUT_FILE_PATH): $(OBJS) $(USER_OBJS) $(OUTPUT_FILE_DEP) $(LIB_DEP) $(LINKER_SCRIPT_DEP)
+	@echo Building target: $@
+	@echo Invoking: AVR/GNU Linker : 5.4.0
+	$(QUOTE)C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-gcc.exe$(QUOTE) -o$(OUTPUT_FILE_PATH_AS_ARGS) $(OBJS_AS_ARGS) $(USER_OBJS) $(LIBS) -Wl,-Map="P4.map" -Wl,--start-group -Wl,-lm  -Wl,--end-group -Wl,--gc-sections -mmcu=atmega328p -B "C:\Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\gcc\dev\atmega328p"  
+	@echo Finished building target: $@
+	"C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-objcopy.exe" -O ihex -R .eeprom -R .fuse -R .lock -R .signature -R .user_signatures  "P4.elf" "P4.hex"
+	"C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-objcopy.exe" -j .eeprom  --set-section-flags=.eeprom=alloc,load --change-section-lma .eeprom=0  --no-change-warnings -O ihex "P4.elf" "P4.eep" || exit 0
+	"C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-objdump.exe" -h -S "P4.elf" > "P4.lss"
+	"C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-objcopy.exe" -O srec -R .eeprom -R .fuse -R .lock -R .signature -R .user_signatures "P4.elf" "P4.srec"
+	"C:\Program Files (x86)\Atmel\Studio\7.0\toolchain\avr8\avr8-gnu-toolchain\bin\avr-size.exe" "P4.elf"
+	
+	
+
+
+
+
+
+# Other Targets
+clean:
+	-$(RM) $(OBJS_AS_ARGS) $(EXECUTABLES)  
+	-$(RM) $(C_DEPS_AS_ARGS)   
+	rm -rf "P4.elf" "P4.a" "P4.hex" "P4.lss" "P4.eep" "P4.map" "P4.srec" "P4.usersignatures"
+	
--- a/P4/P4/Debug/P4.eep
+++ b/P4/P4/Debug/P4.eep
@@ -0,0 +1 @@
+:00000001FF
--- a/P4/P4/Debug/P4.elf
+++ b/P4/P4/Debug/P4.elf
--- a/P4/P4/Debug/P4.hex
+++ b/P4/P4/Debug/P4.hex
@@ -0,0 +1,43 @@
+:100000000C9434000C9451000C9451000C94680032
+:100010000C9451000C9451000C9451000C9451001C
+:100020000C9451000C9451000C9451000C9451000C
+:100030000C9451000C9451000C9451000C945100FC
+:100040000C9451000C9451000C9451000C945100EC
+:100050000C9451000C9451000C9451000C945100DC
+:100060000C9451000C94510011241FBECFEFD8E026
+:10007000DEBFCDBF11E0A0E0B1E0EEE7F2E002C0EC
+:1000800005900D92A431B107D9F721E0A4E1B1E0C8
+:1000900001C01D92A831B207E1F70E94D4000C9470
+:1000A0003D010C9400008FEF8AB981E08BB984B9CF
+:1000B00085B1866085B9F894E8E6F0E080818160DA
+:1000C0008083EBE6F0E080818660808378940895F9
+:1000D0001F920F920FB60F9211248F939F93AF939D
+:1000E000BF9319992BC08091140190911501A09193
+:1000F0001601B0911701892B8A2B8B2B61F484E6B2
+:1001000090E0A0E0B0E08093140190931501A093DB
+:100110001601B09317018091140190911501A091DF
+:100120001601B09117010197A109B109809314013B
+:1001300090931501A0931601B09317011A992BC043
+:100140008091140190911501A0911601B0911701B1
+:1001500083369105A105B10559F48FEF9FEFDC01BE
+:100160008093140190931501A0931601B093170189
+:100170008091140190911501A0911601B091170181
+:100180000196A11DB11D8093140190931501A093B8
+:100190001601B0931701BF91AF919F918F910F906E
+:1001A0000FBE0F901F9018950E9453000F2EFAE07B
+:1001B0008F2E912CA12CB12CF02D16EF60911401F3
+:1001C000709115018091160190911701A50194017C
+:1001D0000E941B016B017C0140E051E081E00E9424
+:1001E00007018091140190911501A0911601B09121
+:1001F000170196011203B001139F700D1124680FAF
+:10020000791F40E051E080E00E940701D7CF660FE0
+:10021000771FFA01E60FF71F90819BB9EFE3FCE926
+:100220003197F1F700C00000882319F081E085B90B
+:10023000089515B80895A1E21A2EAA1BBB1BFD0153
+:100240000DC0AA1FBB1FEE1FFF1FA217B307E407B5
+:10025000F50720F0A21BB30BE40BF50B661F771F0D
+:10026000881F991F1A9469F76095709580959095ED
+:0E0270009B01AC01BD01CF010895F894FFCFB2
+:10027E00C000F900A4003000990092008200F8003E
+:04028E00800090005C
+:00000001FF
--- a/P4/P4/Debug/P4.lss
+++ b/P4/P4/Debug/P4.lss
@@ -0,0 +1,385 @@
+
+P4.elf:     file format elf32-avr
+
+Sections:
+Idx Name          Size      VMA       LMA       File off  Algn
+  0 .data         00000014  00800100  0000027e  00000312  2**0
+                  CONTENTS, ALLOC, LOAD, DATA
+  1 .text         0000027e  00000000  00000000  00000094  2**1
+                  CONTENTS, ALLOC, LOAD, READONLY, CODE
+  2 .bss          00000004  00800114  00800114  00000326  2**0
+                  ALLOC
+  3 .comment      00000030  00000000  00000000  00000326  2**0
+                  CONTENTS, READONLY
+  4 .note.gnu.avr.deviceinfo 00000040  00000000  00000000  00000358  2**2
+                  CONTENTS, READONLY
+  5 .debug_aranges 00000068  00000000  00000000  00000398  2**0
+                  CONTENTS, READONLY, DEBUGGING
+  6 .debug_info   00000944  00000000  00000000  00000400  2**0
+                  CONTENTS, READONLY, DEBUGGING
+  7 .debug_abbrev 000007e4  00000000  00000000  00000d44  2**0
+                  CONTENTS, READONLY, DEBUGGING
+  8 .debug_line   00000458  00000000  00000000  00001528  2**0
+                  CONTENTS, READONLY, DEBUGGING
+  9 .debug_frame  0000009c  00000000  00000000  00001980  2**2
+                  CONTENTS, READONLY, DEBUGGING
+ 10 .debug_str    00000430  00000000  00000000  00001a1c  2**0
+                  CONTENTS, READONLY, DEBUGGING
+ 11 .debug_loc    00000118  00000000  00000000  00001e4c  2**0
+                  CONTENTS, READONLY, DEBUGGING
+ 12 .debug_ranges 00000038  00000000  00000000  00001f64  2**0
+                  CONTENTS, READONLY, DEBUGGING
+
+Disassembly of section .text:
+
+00000000 <__vectors>:
+   0:	0c 94 34 00 	jmp	0x68	; 0x68 <__ctors_end>
+   4:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+   8:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+   c:	0c 94 68 00 	jmp	0xd0	; 0xd0 <__vector_3>
+  10:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  14:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  18:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  1c:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  20:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  24:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  28:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  2c:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  30:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  34:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  38:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  3c:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  40:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  44:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  48:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  4c:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  50:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  54:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  58:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  5c:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  60:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+  64:	0c 94 51 00 	jmp	0xa2	; 0xa2 <__bad_interrupt>
+
+00000068 <__ctors_end>:
+  68:	11 24       	eor	r1, r1
+  6a:	1f be       	out	0x3f, r1	; 63
+  6c:	cf ef       	ldi	r28, 0xFF	; 255
+  6e:	d8 e0       	ldi	r29, 0x08	; 8
+  70:	de bf       	out	0x3e, r29	; 62
+  72:	cd bf       	out	0x3d, r28	; 61
+
+00000074 <__do_copy_data>:
+  74:	11 e0       	ldi	r17, 0x01	; 1
+  76:	a0 e0       	ldi	r26, 0x00	; 0
+  78:	b1 e0       	ldi	r27, 0x01	; 1
+  7a:	ee e7       	ldi	r30, 0x7E	; 126
+  7c:	f2 e0       	ldi	r31, 0x02	; 2
+  7e:	02 c0       	rjmp	.+4      	; 0x84 <__do_copy_data+0x10>
+  80:	05 90       	lpm	r0, Z+
+  82:	0d 92       	st	X+, r0
+  84:	a4 31       	cpi	r26, 0x14	; 20
+  86:	b1 07       	cpc	r27, r17
+  88:	d9 f7       	brne	.-10     	; 0x80 <__do_copy_data+0xc>
+
+0000008a <__do_clear_bss>:
+  8a:	21 e0       	ldi	r18, 0x01	; 1
+  8c:	a4 e1       	ldi	r26, 0x14	; 20
+  8e:	b1 e0       	ldi	r27, 0x01	; 1
+  90:	01 c0       	rjmp	.+2      	; 0x94 <.do_clear_bss_start>
+
+00000092 <.do_clear_bss_loop>:
+  92:	1d 92       	st	X+, r1
+
+00000094 <.do_clear_bss_start>:
+  94:	a8 31       	cpi	r26, 0x18	; 24
+  96:	b2 07       	cpc	r27, r18
+  98:	e1 f7       	brne	.-8      	; 0x92 <.do_clear_bss_loop>
+  9a:	0e 94 d4 00 	call	0x1a8	; 0x1a8 <main>
+  9e:	0c 94 3d 01 	jmp	0x27a	; 0x27a <_exit>
+
+000000a2 <__bad_interrupt>:
+  a2:	0c 94 00 00 	jmp	0	; 0x0 <__vectors>
+
+000000a6 <init>:
+
+#include"keys.h"
+
+
+void init(){
+	DDRD = 0xff;										// Data direction register D (D0 -> D6) as input
+  a6:	8f ef       	ldi	r24, 0xFF	; 255
+  a8:	8a b9       	out	0x0a, r24	; 10
+	PORTD = (1 << PIND0);								// setting bit for 7-segment
+  aa:	81 e0       	ldi	r24, 0x01	; 1
+  ac:	8b b9       	out	0x0b, r24	; 11
+	
+	DDRB = 0x01;										// Data direction register B0 as output, B1 & B2 as input
+  ae:	84 b9       	out	0x04, r24	; 4
+	PORTB |= (1 << PINB1) | (1 << PINB2);				// setting bit for SW1 and SW2
+  b0:	85 b1       	in	r24, 0x05	; 5
+  b2:	86 60       	ori	r24, 0x06	; 6
+  b4:	85 b9       	out	0x05, r24	; 5
+	
+	cli();												// clear global interrupt flag: interrupts will be immediately disabled
+  b6:	f8 94       	cli
+	PCICR |= 0x01;										// Pin Change Interrupt Control Register: turn on PortB
+  b8:	e8 e6       	ldi	r30, 0x68	; 104
+  ba:	f0 e0       	ldi	r31, 0x00	; 0
+  bc:	80 81       	ld	r24, Z
+  be:	81 60       	ori	r24, 0x01	; 1
+  c0:	80 83       	st	Z, r24
+	PCMSK0 |= (1 << PINB1) | (1 << PINB2);				// trigger interrupt when PB1's and PB2's state changes
+  c2:	eb e6       	ldi	r30, 0x6B	; 107
+  c4:	f0 e0       	ldi	r31, 0x00	; 0
+  c6:	80 81       	ld	r24, Z
+  c8:	86 60       	ori	r24, 0x06	; 6
+  ca:	80 83       	st	Z, r24
+	sei();												// set global interrupt enable
+  cc:	78 94       	sei
+  ce:	08 95       	ret
+
+000000d0 <__vector_3>:
+*/
+
+int numbersAsSegments[10] = { 192, 249, 164, 48, 153, 146, 130, 248, 128, 144 };		// display number from 0 to 9;
+volatile uint32_t count = 0;
+
+ISR(PCINT0_vect){
+  d0:	1f 92       	push	r1
+  d2:	0f 92       	push	r0
+  d4:	0f b6       	in	r0, 0x3f	; 63
+  d6:	0f 92       	push	r0
+  d8:	11 24       	eor	r1, r1
+  da:	8f 93       	push	r24
+  dc:	9f 93       	push	r25
+  de:	af 93       	push	r26
+  e0:	bf 93       	push	r27
+	if (bit_is_clear(PINB, PINB1)) {								// sw1 is pressed
+  e2:	19 99       	sbic	0x03, 1	; 3
+  e4:	2b c0       	rjmp	.+86     	; 0x13c <__vector_3+0x6c>
+		if (count == 0) {									
+  e6:	80 91 14 01 	lds	r24, 0x0114	; 0x800114 <__data_end>
+  ea:	90 91 15 01 	lds	r25, 0x0115	; 0x800115 <__data_end+0x1>
+  ee:	a0 91 16 01 	lds	r26, 0x0116	; 0x800116 <__data_end+0x2>
+  f2:	b0 91 17 01 	lds	r27, 0x0117	; 0x800117 <__data_end+0x3>
+  f6:	89 2b       	or	r24, r25
+  f8:	8a 2b       	or	r24, r26
+  fa:	8b 2b       	or	r24, r27
+  fc:	61 f4       	brne	.+24     	; 0x116 <__vector_3+0x46>
+			count = 100;											// if count == 0 and sw1 is pressed, set count = 100 then minus 1 and leds will display 99
+  fe:	84 e6       	ldi	r24, 0x64	; 100
+ 100:	90 e0       	ldi	r25, 0x00	; 0
+ 102:	a0 e0       	ldi	r26, 0x00	; 0
+ 104:	b0 e0       	ldi	r27, 0x00	; 0
+ 106:	80 93 14 01 	sts	0x0114, r24	; 0x800114 <__data_end>
+ 10a:	90 93 15 01 	sts	0x0115, r25	; 0x800115 <__data_end+0x1>
+ 10e:	a0 93 16 01 	sts	0x0116, r26	; 0x800116 <__data_end+0x2>
+ 112:	b0 93 17 01 	sts	0x0117, r27	; 0x800117 <__data_end+0x3>
+		}
+		count--;
+ 116:	80 91 14 01 	lds	r24, 0x0114	; 0x800114 <__data_end>
+ 11a:	90 91 15 01 	lds	r25, 0x0115	; 0x800115 <__data_end+0x1>
+ 11e:	a0 91 16 01 	lds	r26, 0x0116	; 0x800116 <__data_end+0x2>
+ 122:	b0 91 17 01 	lds	r27, 0x0117	; 0x800117 <__data_end+0x3>
+ 126:	01 97       	sbiw	r24, 0x01	; 1
+ 128:	a1 09       	sbc	r26, r1
+ 12a:	b1 09       	sbc	r27, r1
+ 12c:	80 93 14 01 	sts	0x0114, r24	; 0x800114 <__data_end>
+ 130:	90 93 15 01 	sts	0x0115, r25	; 0x800115 <__data_end+0x1>
+ 134:	a0 93 16 01 	sts	0x0116, r26	; 0x800116 <__data_end+0x2>
+ 138:	b0 93 17 01 	sts	0x0117, r27	; 0x800117 <__data_end+0x3>
+	}
+	if (bit_is_clear(PINB, PINB2)) {								// sw2 is pressed
+ 13c:	1a 99       	sbic	0x03, 2	; 3
+ 13e:	2b c0       	rjmp	.+86     	; 0x196 <__vector_3+0xc6>
+		if (count == 99) {
+ 140:	80 91 14 01 	lds	r24, 0x0114	; 0x800114 <__data_end>
+ 144:	90 91 15 01 	lds	r25, 0x0115	; 0x800115 <__data_end+0x1>
+ 148:	a0 91 16 01 	lds	r26, 0x0116	; 0x800116 <__data_end+0x2>
+ 14c:	b0 91 17 01 	lds	r27, 0x0117	; 0x800117 <__data_end+0x3>
+ 150:	83 36       	cpi	r24, 0x63	; 99
+ 152:	91 05       	cpc	r25, r1
+ 154:	a1 05       	cpc	r26, r1
+ 156:	b1 05       	cpc	r27, r1
+ 158:	59 f4       	brne	.+22     	; 0x170 <__vector_3+0xa0>
+			count = -1;												// if count == 99 and sw2 is pressed, set count = -1 then plus 1 and leds will display 00
+ 15a:	8f ef       	ldi	r24, 0xFF	; 255
+ 15c:	9f ef       	ldi	r25, 0xFF	; 255
+ 15e:	dc 01       	movw	r26, r24
+ 160:	80 93 14 01 	sts	0x0114, r24	; 0x800114 <__data_end>
+ 164:	90 93 15 01 	sts	0x0115, r25	; 0x800115 <__data_end+0x1>
+ 168:	a0 93 16 01 	sts	0x0116, r26	; 0x800116 <__data_end+0x2>
+ 16c:	b0 93 17 01 	sts	0x0117, r27	; 0x800117 <__data_end+0x3>
+		}
+		count++;
+ 170:	80 91 14 01 	lds	r24, 0x0114	; 0x800114 <__data_end>
+ 174:	90 91 15 01 	lds	r25, 0x0115	; 0x800115 <__data_end+0x1>
+ 178:	a0 91 16 01 	lds	r26, 0x0116	; 0x800116 <__data_end+0x2>
+ 17c:	b0 91 17 01 	lds	r27, 0x0117	; 0x800117 <__data_end+0x3>
+ 180:	01 96       	adiw	r24, 0x01	; 1
+ 182:	a1 1d       	adc	r26, r1
+ 184:	b1 1d       	adc	r27, r1
+ 186:	80 93 14 01 	sts	0x0114, r24	; 0x800114 <__data_end>
+ 18a:	90 93 15 01 	sts	0x0115, r25	; 0x800115 <__data_end+0x1>
+ 18e:	a0 93 16 01 	sts	0x0116, r26	; 0x800116 <__data_end+0x2>
+ 192:	b0 93 17 01 	sts	0x0117, r27	; 0x800117 <__data_end+0x3>
+	}
+}
+ 196:	bf 91       	pop	r27
+ 198:	af 91       	pop	r26
+ 19a:	9f 91       	pop	r25
+ 19c:	8f 91       	pop	r24
+ 19e:	0f 90       	pop	r0
+ 1a0:	0f be       	out	0x3f, r0	; 63
+ 1a2:	0f 90       	pop	r0
+ 1a4:	1f 90       	pop	r1
+ 1a6:	18 95       	reti
+
+000001a8 <main>:
+
+int main(void)
+{
+	init();															// initializing SW1 and SW2
+ 1a8:	0e 94 53 00 	call	0xa6	; 0xa6 <init>
+	
+	while(1) {
+		int led03 = count % 10;							// Segmentanzeige f<>r Zehner
+ 1ac:	0f 2e       	mov	r0, r31
+ 1ae:	fa e0       	ldi	r31, 0x0A	; 10
+ 1b0:	8f 2e       	mov	r8, r31
+ 1b2:	91 2c       	mov	r9, r1
+ 1b4:	a1 2c       	mov	r10, r1
+ 1b6:	b1 2c       	mov	r11, r1
+ 1b8:	f0 2d       	mov	r31, r0
+		display(true, led03, numbersAsSegments);
+				
+		int led02 = count - led03 * 10;					// Segmentanzeige f<>r Einer
+		display(false, led02, numbersAsSegments);
+ 1ba:	16 ef       	ldi	r17, 0xF6	; 246
+int main(void)
+{
+	init();															// initializing SW1 and SW2
+	
+	while(1) {
+		int led03 = count % 10;							// Segmentanzeige f<>r Zehner
+ 1bc:	60 91 14 01 	lds	r22, 0x0114	; 0x800114 <__data_end>
+ 1c0:	70 91 15 01 	lds	r23, 0x0115	; 0x800115 <__data_end+0x1>
+ 1c4:	80 91 16 01 	lds	r24, 0x0116	; 0x800116 <__data_end+0x2>
+ 1c8:	90 91 17 01 	lds	r25, 0x0117	; 0x800117 <__data_end+0x3>
+ 1cc:	a5 01       	movw	r20, r10
+ 1ce:	94 01       	movw	r18, r8
+ 1d0:	0e 94 1b 01 	call	0x236	; 0x236 <__udivmodsi4>
+ 1d4:	6b 01       	movw	r12, r22
+ 1d6:	7c 01       	movw	r14, r24
+		display(true, led03, numbersAsSegments);
+ 1d8:	40 e0       	ldi	r20, 0x00	; 0
+ 1da:	51 e0       	ldi	r21, 0x01	; 1
+ 1dc:	81 e0       	ldi	r24, 0x01	; 1
+ 1de:	0e 94 07 01 	call	0x20e	; 0x20e <display>
+				
+		int led02 = count - led03 * 10;					// Segmentanzeige f<>r Einer
+ 1e2:	80 91 14 01 	lds	r24, 0x0114	; 0x800114 <__data_end>
+ 1e6:	90 91 15 01 	lds	r25, 0x0115	; 0x800115 <__data_end+0x1>
+ 1ea:	a0 91 16 01 	lds	r26, 0x0116	; 0x800116 <__data_end+0x2>
+ 1ee:	b0 91 17 01 	lds	r27, 0x0117	; 0x800117 <__data_end+0x3>
+		display(false, led02, numbersAsSegments);
+ 1f2:	96 01       	movw	r18, r12
+ 1f4:	12 03       	mulsu	r17, r18
+ 1f6:	b0 01       	movw	r22, r0
+ 1f8:	13 9f       	mul	r17, r19
+ 1fa:	70 0d       	add	r23, r0
+ 1fc:	11 24       	eor	r1, r1
+ 1fe:	68 0f       	add	r22, r24
+ 200:	79 1f       	adc	r23, r25
+ 202:	40 e0       	ldi	r20, 0x00	; 0
+ 204:	51 e0       	ldi	r21, 0x01	; 1
+ 206:	80 e0       	ldi	r24, 0x00	; 0
+ 208:	0e 94 07 01 	call	0x20e	; 0x20e <display>
+ 20c:	d7 cf       	rjmp	.-82     	; 0x1bc <main+0x14>
+
+0000020e <display>:
+#include "sevenseg.h"
+#include <stdbool.h>
+
+void display(bool tens, int num, int numList[]) {
+
+	PORTD = numList[num];			// Displays the Number on PortD
+ 20e:	66 0f       	add	r22, r22
+ 210:	77 1f       	adc	r23, r23
+ 212:	fa 01       	movw	r30, r20
+ 214:	e6 0f       	add	r30, r22
+ 216:	f7 1f       	adc	r31, r23
+ 218:	90 81       	ld	r25, Z
+ 21a:	9b b9       	out	0x0b, r25	; 11
+	#else
+		//round up by default
+		__ticks_dc = (uint32_t)(ceil(fabs(__tmp)));
+	#endif
+
+	__builtin_avr_delay_cycles(__ticks_dc);
+ 21c:	ef e3       	ldi	r30, 0x3F	; 63
+ 21e:	fc e9       	ldi	r31, 0x9C	; 156
+ 220:	31 97       	sbiw	r30, 0x01	; 1
+ 222:	f1 f7       	brne	.-4      	; 0x220 <display+0x12>
+ 224:	00 c0       	rjmp	.+0      	; 0x226 <display+0x18>
+ 226:	00 00       	nop
+	_delay_ms(10);
+	
+	if(tens) {
+ 228:	88 23       	and	r24, r24
+ 22a:	19 f0       	breq	.+6      	; 0x232 <display+0x24>
+		PORTB = 1;
+ 22c:	81 e0       	ldi	r24, 0x01	; 1
+ 22e:	85 b9       	out	0x05, r24	; 5
+ 230:	08 95       	ret
+	}
+	else {
+		PORTB = 0;
+ 232:	15 b8       	out	0x05, r1	; 5
+ 234:	08 95       	ret
+
+00000236 <__udivmodsi4>:
+ 236:	a1 e2       	ldi	r26, 0x21	; 33
+ 238:	1a 2e       	mov	r1, r26
+ 23a:	aa 1b       	sub	r26, r26
+ 23c:	bb 1b       	sub	r27, r27
+ 23e:	fd 01       	movw	r30, r26
+ 240:	0d c0       	rjmp	.+26     	; 0x25c <__udivmodsi4_ep>
+
+00000242 <__udivmodsi4_loop>:
+ 242:	aa 1f       	adc	r26, r26
+ 244:	bb 1f       	adc	r27, r27
+ 246:	ee 1f       	adc	r30, r30
+ 248:	ff 1f       	adc	r31, r31
+ 24a:	a2 17       	cp	r26, r18
+ 24c:	b3 07       	cpc	r27, r19
+ 24e:	e4 07       	cpc	r30, r20
+ 250:	f5 07       	cpc	r31, r21
+ 252:	20 f0       	brcs	.+8      	; 0x25c <__udivmodsi4_ep>
+ 254:	a2 1b       	sub	r26, r18
+ 256:	b3 0b       	sbc	r27, r19
+ 258:	e4 0b       	sbc	r30, r20
+ 25a:	f5 0b       	sbc	r31, r21
+
+0000025c <__udivmodsi4_ep>:
+ 25c:	66 1f       	adc	r22, r22
+ 25e:	77 1f       	adc	r23, r23
+ 260:	88 1f       	adc	r24, r24
+ 262:	99 1f       	adc	r25, r25
+ 264:	1a 94       	dec	r1
+ 266:	69 f7       	brne	.-38     	; 0x242 <__udivmodsi4_loop>
+ 268:	60 95       	com	r22
+ 26a:	70 95       	com	r23
+ 26c:	80 95       	com	r24
+ 26e:	90 95       	com	r25
+ 270:	9b 01       	movw	r18, r22
+ 272:	ac 01       	movw	r20, r24
+ 274:	bd 01       	movw	r22, r26
+ 276:	cf 01       	movw	r24, r30
+ 278:	08 95       	ret
+
+0000027a <_exit>:
+ 27a:	f8 94       	cli
+
+0000027c <__stop_program>:
+ 27c:	ff cf       	rjmp	.-2      	; 0x27c <__stop_program>
--- a/P4/P4/Debug/P4.map
+++ b/P4/P4/Debug/P4.map
@@ -0,0 +1,517 @@
+Archive member included to satisfy reference by file (symbol)
+
+c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+                              main.o (__udivmodsi4)
+c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+                              C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o (exit)
+c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_copy_data.o)
+                              main.o (__do_copy_data)
+c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_clear_bss.o)
+                              main.o (__do_clear_bss)
+
+Discarded input sections
+
+ .data          0x00000000        0x0 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o
+ .bss           0x00000000        0x0 C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/gcc/dev/atmega328p/avr5/crtatmega328p.o
+ .text          0x00000000        0x0 keys.o
+ .data          0x00000000        0x0 keys.o
+ .bss           0x00000000        0x0 keys.o
+ .text          0x00000000        0x0 main.o
+ .data          0x00000000        0x0 main.o
+ .bss           0x00000000        0x0 main.o
+ .text          0x00000000        0x0 sevenseg.o
+ .data          0x00000000        0x0 sevenseg.o
+ .bss           0x00000000        0x0 sevenseg.o
+ .text          0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .data          0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .bss           0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .text.libgcc.mul
+                0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .text.libgcc   0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .text.libgcc.prologue
+                0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .text.libgcc.builtins
+                0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .text.libgcc.fmul
+                0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .text.libgcc.fixed
+                0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_udivmodsi4.o)
+ .text          0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+ .data          0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+ .bss           0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+ .text.libgcc.mul
+                0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+ .text.libgcc.div
+                0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+ .text.libgcc   0x00000000        0x0 c:/program files (x86)/atmel/studio/7.0/toolchain/avr8/avr8-gnu-toolchain/bin/../lib/gcc/avr/5.4.0/avr5\libgcc.a(_exit.o)
+ .text.libgcc.prologue
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+ .text.libgcc.builtins
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+S11302400DC0AA1FBB1FEE1FFF1FA217B307E407B1
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+S11102709B01AC01BD01CF010895F894FFCFAE
+S113027EC000F900A4003000990092008200F8003A
+S107028E8000900058
+S9030000FC
--- a/P4/P4/Debug/keys.d
+++ b/P4/P4/Debug/keys.d
@@ -0,0 +1,39 @@
+keys.d keys.o: .././keys.c .././keys.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\io.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\sfr_defs.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\inttypes.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdint.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\stdint.h \
+ C:\Program\ Files\ (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include/avr/iom328p.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\portpins.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\common.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\version.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\fuse.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\lock.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\interrupt.h
+
+.././keys.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\io.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\sfr_defs.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\inttypes.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdint.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\stdint.h:
+
+C:\Program\ Files\ (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include/avr/iom328p.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\portpins.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\common.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\version.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\fuse.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\lock.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\interrupt.h:
--- a/P4/P4/Debug/keys.o
+++ b/P4/P4/Debug/keys.o
--- a/P4/P4/Debug/main.d
+++ b/P4/P4/Debug/main.d
@@ -0,0 +1,54 @@
+main.d main.o: .././main.c .././keys.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\io.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\sfr_defs.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\inttypes.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdint.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\stdint.h \
+ C:\Program\ Files\ (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include/avr/iom328p.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\portpins.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\common.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\version.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\fuse.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\lock.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\interrupt.h \
+ .././sevenseg.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay_basic.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\math.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdbool.h
+
+.././keys.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\io.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\sfr_defs.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\inttypes.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdint.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\stdint.h:
+
+C:\Program\ Files\ (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include/avr/iom328p.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\portpins.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\common.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\version.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\fuse.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\lock.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\interrupt.h:
+
+.././sevenseg.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay_basic.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\math.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdbool.h:
--- a/P4/P4/Debug/main.o
+++ b/P4/P4/Debug/main.o
--- a/P4/P4/Debug/makedep.mk
+++ b/P4/P4/Debug/makedep.mk
@@ -0,0 +1,10 @@
+################################################################################
+# Automatically-generated file. Do not edit or delete the file
+################################################################################
+
+keys.c
+
+main.c
+
+sevenseg.c
+
--- a/P4/P4/Debug/sevenseg.d
+++ b/P4/P4/Debug/sevenseg.d
@@ -0,0 +1,48 @@
+sevenseg.d sevenseg.o: .././sevenseg.c .././sevenseg.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\inttypes.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdint.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\stdint.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay_basic.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\math.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\io.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\sfr_defs.h \
+ C:\Program\ Files\ (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include/avr/iom328p.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\portpins.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\common.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\version.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\fuse.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\lock.h \
+ c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdbool.h
+
+.././sevenseg.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\inttypes.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdint.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\stdint.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\util\delay_basic.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\math.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\io.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\sfr_defs.h:
+
+C:\Program\ Files\ (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include/avr/iom328p.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\portpins.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\common.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\version.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\fuse.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\avr\include\avr\lock.h:
+
+c:\program\ files\ (x86)\atmel\studio\7.0\toolchain\avr8\avr8-gnu-toolchain\lib\gcc\avr\5.4.0\include\stdbool.h:
--- a/P4/P4/Debug/sevenseg.o
+++ b/P4/P4/Debug/sevenseg.o
--- a/P4/P4/Keys_SAFAK_Dez-06-141334-2023_CaseConflict.c
+++ b/P4/P4/Keys_SAFAK_Dez-06-141334-2023_CaseConflict.c
@@ -0,0 +1,22 @@
+/*
+ * keys.c
+ *
+ * Created: 12/12/2021 07:26:18
+ *  Author: haypsilcn
+ */ 
+
+#include"keys.h"
+
+
+void init(){
+	DDRD = 0xff;										// Data direction register D (D0 -> D6) as input
+	PORTD = (1 << PIND0);								// setting bit for 7-segment
+	
+	DDRB = 0x01;										// Data direction register B0 as output, B1 & B2 as input
+	PORTB |= (1 << PINB1) | (1 << PINB2);				// setting bit for SW1 and SW2
+	
+	cli();												// clear global interrupt flag: interrupts will be immediately disabled
+	PCICR |= 0x02;										// Pin Change Interrupt Control Register: turn on PortC
+	PCMSK0 |= (1 << PINC0) | (1 << PINC1);				// trigger interrupt when PB1's and PB2's state changes
+	sei();												// set global interrupt enable
+}
--- a/P4/P4/P4.componentinfo.xml
+++ b/P4/P4/P4.componentinfo.xml
@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Store xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="AtmelPackComponentManagement">
+	<ProjectComponents>
+		<ProjectComponent z:Id="i1" xmlns:z="http://schemas.microsoft.com/2003/10/Serialization/">
+			<CApiVersion></CApiVersion>
+			<CBundle></CBundle>
+			<CClass>Device</CClass>
+			<CGroup>Startup</CGroup>
+			<CSub></CSub>
+			<CVariant></CVariant>
+			<CVendor>Atmel</CVendor>
+			<CVersion>1.2.0</CVersion>
+			<DefaultRepoPath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs</DefaultRepoPath>
+			<DependentComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" />
+			<Description></Description>
+			<Files xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>include</Category>
+					<Condition>C</Condition>
+					<FileContentHash i:nil="true" />
+					<FileVersion></FileVersion>
+					<Name>include</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\include\avr\iom328p.h</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>header</Category>
+					<Condition>C</Condition>
+					<FileContentHash>UMk4QUzkkuShabuoYtNl/Q==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>include/avr/iom328p.h</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\templates\main.c</AbsolutePath>
+					<Attribute>template</Attribute>
+					<Category>source</Category>
+					<Condition>C Exe</Condition>
+					<FileContentHash>tT5ONm3vILdPjO5YQRtoRA==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>templates/main.c</Name>
+					<SelectString>Main file (.c)</SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\templates\main.cpp</AbsolutePath>
+					<Attribute>template</Attribute>
+					<Category>source</Category>
+					<Condition>C Exe</Condition>
+					<FileContentHash>YXFphlh0CtZJU+ebktABgQ==</FileContentHash>
+					<FileVersion></FileVersion>
+					<Name>templates/main.cpp</Name>
+					<SelectString>Main file (.cpp)</SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+				<d4p1:anyType i:type="FileInfo">
+					<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATmega_DFP\1.2.209\gcc\dev\atmega328p</AbsolutePath>
+					<Attribute></Attribute>
+					<Category>libraryPrefix</Category>
+					<Condition>GCC</Condition>
+					<FileContentHash i:nil="true" />
+					<FileVersion></FileVersion>
+					<Name>gcc/dev/atmega328p</Name>
+					<SelectString></SelectString>
+					<SourcePath></SourcePath>
+				</d4p1:anyType>
+			</Files>
+			<PackName>ATmega_DFP</PackName>
+			<PackPath>C:/Program Files (x86)/Atmel/Studio/7.0/Packs/atmel/ATmega_DFP/1.2.209/Atmel.ATmega_DFP.pdsc</PackPath>
+			<PackVersion>1.2.209</PackVersion>
+			<PresentInProject>true</PresentInProject>
+			<ReferenceConditionId>ATmega328P</ReferenceConditionId>
+			<RteComponents xmlns:d4p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
+				<d4p1:string></d4p1:string>
+			</RteComponents>
+			<Status>Resolved</Status>
+			<VersionMode>Fixed</VersionMode>
+			<IsComponentInAtProject>true</IsComponentInAtProject>
+		</ProjectComponent>
+	</ProjectComponents>
+</Store>
--- a/P4/P4/P4.cproj
+++ b/P4/P4/P4.cproj
@@ -0,0 +1,128 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="14.0">
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectVersion>7.0</ProjectVersion>
+    <ToolchainName>com.Atmel.AVRGCC8.C</ToolchainName>
+    <ProjectGuid>dce6c7e3-ee26-4d79-826b-08594b9ad897</ProjectGuid>
+    <avrdevice>ATmega328P</avrdevice>
+    <avrdeviceseries>none</avrdeviceseries>
+    <OutputType>Executable</OutputType>
+    <Language>C</Language>
+    <OutputFileName>$(MSBuildProjectName)</OutputFileName>
+    <OutputFileExtension>.elf</OutputFileExtension>
+    <OutputDirectory>$(MSBuildProjectDirectory)\$(Configuration)</OutputDirectory>
+    <AssemblyName>P4</AssemblyName>
+    <Name>P4</Name>
+    <RootNamespace>P4</RootNamespace>
+    <ToolchainFlavour>Native</ToolchainFlavour>
+    <KeepTimersRunning>true</KeepTimersRunning>
+    <OverrideVtor>false</OverrideVtor>
+    <CacheFlash>true</CacheFlash>
+    <ProgFlashFromRam>true</ProgFlashFromRam>
+    <RamSnippetAddress />
+    <UncachedRange />
+    <preserveEEPROM>true</preserveEEPROM>
+    <OverrideVtorValue />
+    <BootSegment>2</BootSegment>
+    <ResetRule>0</ResetRule>
+    <eraseonlaunchrule>0</eraseonlaunchrule>
+    <EraseKey />
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Release' ">
+    <ToolchainSettings>
+      <AvrGcc>
+        <avrgcc.common.Device>-mmcu=atmega328p -B "%24(PackRepoDir)\atmel\ATmega_DFP\1.2.209\gcc\dev\atmega328p"</avrgcc.common.Device>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>NDEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\atmel\ATmega_DFP\1.2.209\include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize for size (-Os)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.PackStructureMembers>True</avrgcc.compiler.optimization.PackStructureMembers>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcc.linker.libraries.Libraries>
+        <avrgcc.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\atmel\ATmega_DFP\1.2.209\include</Value>
+          </ListValues>
+        </avrgcc.assembler.general.IncludePaths>
+      </AvrGcc>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)' == 'Debug' ">
+    <ToolchainSettings>
+      <AvrGcc>
+        <avrgcc.common.Device>-mmcu=atmega328p -B "%24(PackRepoDir)\atmel\ATmega_DFP\1.2.209\gcc\dev\atmega328p"</avrgcc.common.Device>
+        <avrgcc.common.outputfiles.hex>True</avrgcc.common.outputfiles.hex>
+        <avrgcc.common.outputfiles.lss>True</avrgcc.common.outputfiles.lss>
+        <avrgcc.common.outputfiles.eep>True</avrgcc.common.outputfiles.eep>
+        <avrgcc.common.outputfiles.srec>True</avrgcc.common.outputfiles.srec>
+        <avrgcc.common.outputfiles.usersignatures>False</avrgcc.common.outputfiles.usersignatures>
+        <avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>True</avrgcc.compiler.general.ChangeDefaultCharTypeUnsigned>
+        <avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>True</avrgcc.compiler.general.ChangeDefaultBitFieldUnsigned>
+        <avrgcc.compiler.symbols.DefSymbols>
+          <ListValues>
+            <Value>DEBUG</Value>
+          </ListValues>
+        </avrgcc.compiler.symbols.DefSymbols>
+        <avrgcc.compiler.directories.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\atmel\ATmega_DFP\1.2.209\include</Value>
+          </ListValues>
+        </avrgcc.compiler.directories.IncludePaths>
+        <avrgcc.compiler.optimization.level>Optimize (-O1)</avrgcc.compiler.optimization.level>
+        <avrgcc.compiler.optimization.PackStructureMembers>True</avrgcc.compiler.optimization.PackStructureMembers>
+        <avrgcc.compiler.optimization.AllocateBytesNeededForEnum>True</avrgcc.compiler.optimization.AllocateBytesNeededForEnum>
+        <avrgcc.compiler.optimization.DebugLevel>Default (-g2)</avrgcc.compiler.optimization.DebugLevel>
+        <avrgcc.compiler.warnings.AllWarnings>True</avrgcc.compiler.warnings.AllWarnings>
+        <avrgcc.linker.libraries.Libraries>
+          <ListValues>
+            <Value>libm</Value>
+          </ListValues>
+        </avrgcc.linker.libraries.Libraries>
+        <avrgcc.assembler.general.IncludePaths>
+          <ListValues>
+            <Value>%24(PackRepoDir)\atmel\ATmega_DFP\1.2.209\include</Value>
+          </ListValues>
+        </avrgcc.assembler.general.IncludePaths>
+        <avrgcc.assembler.debugging.DebugLevel>Default (-Wa,-g)</avrgcc.assembler.debugging.DebugLevel>
+      </AvrGcc>
+    </ToolchainSettings>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="keys.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="keys.h">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="main.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="sevenseg.c">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="sevenseg.h">
+      <SubType>compile</SubType>
+    </Compile>
+  </ItemGroup>
+  <Import Project="$(AVRSTUDIO_EXE_PATH)\\Vs\\Compiler.targets" />
+</Project>
--- a/P4/P4/keys.h
+++ b/P4/P4/keys.h
@@ -0,0 +1,20 @@
+/*
+ * keys.h
+ *
+ * Created: 12/12/2021 07:25:56
+ *  Author: haypsilcn
+ */ 
+
+
+#ifndef KEYS_H_
+#define KEYS_H_
+
+#include <avr/io.h>
+#include <avr/interrupt.h>
+
+#define bit_is_clear(sfr, bit) (!(_SFR_BYTE(sfr) & _BV(bit)))		// Test whether bit 'bit' in IO register 'sfr' is clear. This will return non-zero if the bit is clear, and a 0 if the bit is set.
+
+void init();
+
+
+#endif /* KEYS_H_ */
--- a/P4/P4/main.c
+++ b/P4/P4/main.c
@@ -0,0 +1,60 @@
+/*
+ * Praktikum04.c
+ *
+ * Created: 12/12/2021 07:21:18
+ * Author : haypsilcn
+ */ 
+
+#include "keys.h"
+#include "sevenseg.h"
+#include <stdbool.h>
+
+/*
+logical 0: on
+logical 1: off
+
+	.gfe dcba	HEX	int
+0 : 1100 0000 = C0	192
+1 : 1111 1001 = F9	249
+2 : 1010 0100 = A4	164
+3 :	1011 0000 = 30	48
+4 : 1001 1001 = 99	153
+5 : 1001 0010 = 92	146
+6 : 1000 0010 = 82	130
+7 : 1111 1000 = F8	248
+8 : 1000 0000 = 80	128
+9 : 1001 0000 = 90	144
+*/
+
+int numbersAsSegments[10] = { 192, 249, 164, 48, 153, 146, 130, 248, 128, 144 };		// display number from 0 to 9;
+volatile uint32_t count = 0;
+
+ISR(PCINT0_vect){
+	if (bit_is_clear(PINB, PINB1)) {								// sw1 is pressed
+		if (count == 0) {									
+			count = 100;											// if count == 0 and sw1 is pressed, set count = 100 then minus 1 and leds will display 99
+		}
+		count--;
+	}
+	if (bit_is_clear(PINB, PINB2)) {								// sw2 is pressed
+		if (count == 99) {
+			count = -1;												// if count == 99 and sw2 is pressed, set count = -1 then plus 1 and leds will display 00
+		}
+		count++;
+	}
+}
+
+int main(void)
+{
+	init();															// initializing SW1 and SW2
+	
+	while(1) {
+		int led03 = count % 10;							// Segmentanzeige f<>r Zehner
+		display(true, led03, numbersAsSegments);
+				
+		int led02 = count - led03 * 10;					// Segmentanzeige f<>r Einer
+		display(false, led02, numbersAsSegments);
+	}
+}
+
+
--- a/P4/P4/sevenseg.c
+++ b/P4/P4/sevenseg.c
@@ -0,0 +1,17 @@
+#include "sevenseg.h"
+#include <stdbool.h>
+
+void display(bool tens, int num, int numList[]) {
+
+	PORTD = numList[num];			// Displays the Number on PortD
+	_delay_ms(10);
+	
+	// teens durch den Wert von PortB ersetzen
+	
+	if(tens) {
+		PORTB = 1;
+	}
+	else {
+		PORTB = 0;
+	}
+}
--- a/P4/P4/sevenseg.h
+++ b/P4/P4/sevenseg.h
@@ -0,0 +1,19 @@
+/*
+ * sevenseg.h
+ *
+ * Created: 12/12/2021 07:25:14
+ *  Author: haypsilcn
+ */ 
+
+
+#ifndef SEVENSEG_H_
+#define SEVENSEG_H_
+
+#define F_CPU 16000000
+#include <util/delay.h>
+#include "avr/io.h"
+#include <stdbool.h>
+
+void display(bool tens, int num, int numList[]);
+
+#endif /* SEVENSEG_H_ */