diff --git a/module04/ex00/bitmanip.h b/module04/ex00/bitmanip.h
deleted file mode 100644
index ce33649..0000000
--- a/module04/ex00/bitmanip.h
+++ /dev/null
@@ -1,61 +0,0 @@
-#ifndef BITMANIP_H
-#define BITMANIP_H
-
-#include "utils.h"
-
-// Bit operations on registers
-#define SET(register, bit)		(register |= (1 << (bit)))
-#define CLEAR(register, bit)	(register &= ~(1 << (bit)))
-#define TEST(register, bit)		(register & (1 << (bit)))
-#define TOGGLE(register, bit)	(register ^= (1 << (bit)))
-
-// Get arguments from tuple-like definitions
-#define ARG_1(v1, v2)			v1
-#define ARG_2(v1, v2)			v2
-#define GET_PORT(args)			ARG_1 args
-#define GET_BIT(args)			ARG_2 args
-// // version with "LED1 B, D1" without parenthesis
-// #define ARG_1(v1, ...)			v1
-// #define ARG_2(v1, v2, ...)		v2
-// #define GET_PORT(...)			ARG_1(__VA_ARGS__)
-// #define GET_BIT(...)			ARG_2(__VA_ARGS__)
-
-// Actions on elements
-// #define SET_ELEM(...)			SET(CONCAT(PORT, GET_PORT(__VA_ARGS__)), GET_BIT(__VA_ARGS__)) // version for "LED1 B, D1" without parenthesis
-#define SET_ELEM(elem)			SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define CLEAR_ELEM(elem)		CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define TEST_ELEM(elem)			TEST(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define TOGGLE_ELEM(elem)		TOGGLE(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-
-#define MODE_OUTPUT(elem)		SET(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
-#define MODE_INPUT(elem)		CLEAR(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
-#define TOGGLE_PIN(elem)		SET(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem))
-#define TEST_PIN(elem)			(TEST(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem)))
-#define IS_PIN_SET(elem)		(TEST_PIN(elem) == 0)
-#define IS_PIN_CLEAR(elem)		(TEST_PIN(elem) == 1)
-#define PULLUP_ON(elem)			SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define PULLUP_OFF(elem)		CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-
-// Bit definitions
-#define D1 0
-#define D2 1
-#define D3 2
-#define D4 4
-#define SW1 2
-#define SW2 4
-#define D5B 3
-#define D5R 5
-#define D5G 6
-
-// Elements (port, bit)
-#define LED1		(B, D1)
-#define LED2		(B, D2)
-#define LED3		(B, D3)
-#define LED4		(B, D4)
-#define BUTTON1		(D, SW1)
-#define BUTTON2		(D, SW2)
-#define RGB5_BLUE	(D, D5B)
-#define RGB5_RED	(D, D5R)
-#define RGB5_GEEN	(D, D5G)
-
-#endif // BITMANIP_H
\ No newline at end of file
diff --git a/module04/ex00/interrupt.h b/module04/ex00/interrupt.h
deleted file mode 100644
index 9668ef7..0000000
--- a/module04/ex00/interrupt.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef INTERRUPT_H
-#define INTERRUPT_H
-
-// 7.3.1 : SREG – AVR Status Register
-#define ENABLE_GLOBAL_INTERRUPT		(1<<SREG_I)
-#define DISABLE_GLOBAL_INTERRUPT	(0<<SREG_I)
-
-#endif // INTERRUPT_H
\ No newline at end of file
diff --git a/module04/ex00/utils.h b/module04/ex00/utils.h
deleted file mode 100644
index 1dfefcb..0000000
--- a/module04/ex00/utils.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef UTILS_H
-#define UTILS_H
-
-// stringify
-#define STRINGIFY_HELPER(x)			#x
-#define STRINGIFY(x)				STRINGIFY_HELPER(x)
-
-// concatenate
-#define CONCAT_HELPER(x, y)			x ## y
-#define CONCAT(x, y)				CONCAT_HELPER(x, y)
-
-// mathematics
-#define PERCENT(percent, total)		(((float)percent / 100) * total)
-#define DIV_ROUND_CLOSEST(n, d)		((((n) < 0) == ((d) < 0)) ? (((n) + (d)/2)/(d)) : (((n) - (d)/2)/(d)))
-
-// text
-#define SWITCH_CASE(ch) (((ch) >= 'A' && (ch) <= 'Z') || ((ch) >= 'a' && (ch) <= 'z') ? ((ch) ^ (1 << 5)) : (ch))
-
-// boolean
-#define TRUE						1
-#define FALSE						0
-
-#endif // UTILS_H
\ No newline at end of file
diff --git a/module04/ex01/bitmanip.h b/module04/ex01/bitmanip.h
deleted file mode 100644
index 0808aec..0000000
--- a/module04/ex01/bitmanip.h
+++ /dev/null
@@ -1,61 +0,0 @@
-#ifndef BITMANIP_H
-#define BITMANIP_H
-
-#include "utils.h"
-
-// Bit operations on registers
-#define SET(register, bit)		(register |= (1 << (bit)))
-#define CLEAR(register, bit)	(register &= ~(1 << (bit)))
-#define TEST(register, bit)		(register & (1 << (bit)))
-#define TOGGLE(register, bit)	(register ^= (1 << (bit)))
-
-// Get arguments from tuple-like definitions
-#define ARG_1(v1, v2)			v1
-#define ARG_2(v1, v2)			v2
-#define GET_PORT(args)			ARG_1 args
-#define GET_BIT(args)			ARG_2 args
-// // version with "LED1 B, D1" without parenthesis
-// #define ARG_1(v1, ...)			v1
-// #define ARG_2(v1, v2, ...)		v2
-// #define GET_PORT(...)			ARG_1(__VA_ARGS__)
-// #define GET_BIT(...)			ARG_2(__VA_ARGS__)
-
-// Actions on elements
-// #define SET_ELEM(...)			SET(CONCAT(PORT, GET_PORT(__VA_ARGS__)), GET_BIT(__VA_ARGS__)) // version for "LED1 B, D1" without parenthesis
-#define SET_ELEM(elem)			SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define CLEAR_ELEM(elem)		CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define TEST_ELEM(elem)			TEST(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define TOGGLE_ELEM(elem)		TOGGLE(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-
-#define MODE_OUTPUT(elem)		SET(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
-#define MODE_INPUT(elem)		CLEAR(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
-#define TOGGLE_PIN(elem)		SET(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem))
-#define TEST_PIN(elem)			(TEST(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem)))
-#define IS_PIN_SET(elem)		(TEST_PIN(elem) == 0)
-#define IS_PIN_CLEAR(elem)		(TEST_PIN(elem) == 1)
-#define PULLUP_ON(elem)			SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define PULLUP_OFF(elem)		CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-
-// Bit definitions (<pin number> // <pin name>)
-#define D1 0	// PB0
-#define D2 1	// PB1
-#define D3 2	// PB2
-#define D4 4	// PB4
-#define SW1 2	// PD2
-#define SW2 4	// PD4
-#define D5B 3	// PD3
-#define D5R 5	// PD5
-#define D5G 6	// PD6
-
-// Elements (port, bit)
-#define LED1		(B, D1)
-#define LED2		(B, D2)
-#define LED3		(B, D3)
-#define LED4		(B, D4)
-#define BUTTON1		(D, SW1)
-#define BUTTON2		(D, SW2)
-#define RGB5_BLUE	(D, D5B)
-#define RGB5_RED	(D, D5R)
-#define RGB5_GEEN	(D, D5G)
-
-#endif // BITMANIP_H
\ No newline at end of file
diff --git a/module04/ex01/interrupt.h b/module04/ex01/interrupt.h
deleted file mode 100644
index 9668ef7..0000000
--- a/module04/ex01/interrupt.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef INTERRUPT_H
-#define INTERRUPT_H
-
-// 7.3.1 : SREG – AVR Status Register
-#define ENABLE_GLOBAL_INTERRUPT		(1<<SREG_I)
-#define DISABLE_GLOBAL_INTERRUPT	(0<<SREG_I)
-
-#endif // INTERRUPT_H
\ No newline at end of file
diff --git a/module04/ex01/timer.h b/module04/ex01/timer.h
deleted file mode 100644
index df4eaaa..0000000
--- a/module04/ex01/timer.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#ifndef TIMER_H
-#define TIMER_H
-
-// table 15-9 : timer 0 prescale sets
-#define T0_PRESCALE_SET(value)  \
-									((value) == 1   ? (0<<CS02 | 0<<CS01 | 1<<CS00) : \
-									 (value) == 8   ? (0<<CS02 | 1<<CS01 | 0<<CS00) : \
-									 (value) == 64  ? (0<<CS02 | 1<<CS01 | 1<<CS00) : \
-									 (value) == 256 ? (1<<CS02 | 0<<CS01 | 0<<CS00) : \
-									 (value) == 1024? (1<<CS02 | 0<<CS01 | 1<<CS00) : \
-													  (0<<CS02 | 0<<CS01 | 0<<CS00))
-#define TIME_MS(ms, prescale_value)	(((F_CPU / prescale_value) * ms) / 1000)
-
-// table 16-5 : timer 1 prescale sets
-#define T1_PRESCALE_SET(value)  \
-									((value) == 1   ? (0<<CS12 | 0<<CS11 | 1<<CS10) : \
-									 (value) == 8   ? (0<<CS12 | 1<<CS11 | 0<<CS10) : \
-									 (value) == 64  ? (0<<CS12 | 1<<CS11 | 1<<CS10) : \
-									 (value) == 256 ? (1<<CS12 | 0<<CS11 | 0<<CS10) : \
-									 (value) == 1024? (1<<CS12 | 0<<CS11 | 1<<CS10) : \
-													  (0<<CS12 | 0<<CS11 | 0<<CS10))
-#define TIME_MS(ms, prescale_value)	(((F_CPU / prescale_value) * ms) / 1000)
-
-// Table 16-4 : Waveform Generation Mode Bit Description
-#define CTC_TOP_OCR1A_IN_TCCR1B			(0<<WGM13 | 1<<WGM12)
-#define CTC_TOP_OCR1A_IN_TCCR1A									(0<<WGM11 | 0<<WGM10)
-#define CTC_TOP_ICR1_IN_TCCR1B			(1<<WGM13 | 1<<WGM12)
-#define CTC_TOP_ICR1_IN_TCCR1A									(0<<WGM11 | 0<<WGM10)
-#define FAST_PWM_TOP_OCR1A_IN_TCCR1B	(1<<WGM13 | 1<<WGM12)
-#define FAST_PWM_TOP_OCR1A_IN_TCCR1A							(1<<WGM11 | 1<<WGM10)
-#define FAST_PWM_TOP_ICR1_IN_TCCR1B		(1<<WGM13 | 1<<WGM12)
-#define FAST_PWM_TOP_ICR1_IN_TCCR1A								(1<<WGM11 | 0<<WGM10)
-// 16.11.8 : Timer/Counter1 Interrupt Mask Register
-#define INTERRUPT_ENABLE_CHANNEL_A		(1 << OCIE1A)
-#define INTERRUPT_DISABLE_CHANNEL_A		(0 << OCIE1A)
-
-#endif // TIMER_H
\ No newline at end of file
diff --git a/module04/ex01/usart.h b/module04/ex01/usart.h
deleted file mode 100644
index b930036..0000000
--- a/module04/ex01/usart.h
+++ /dev/null
@@ -1,31 +0,0 @@
-#ifndef USART_H
-#define USART_H
-
-#define BAUD_PRESCALER(usart_baudrate)	(DIV_ROUND_CLOSEST(F_CPU, (16 * usart_baudrate)) - 1)
-// Table 20-8 : Mode Selection (USART Mode SELect)
-#define ASYNCHRONOUS					(0<<UMSEL01 | 0<<UMSEL00)
-#define SYNCHRONOUS						(0<<UMSEL01 | 1<<UMSEL00)
-// Table 20-9 : Parity Bit Selection (USART Parity Mode)
-#define PARITY_DISABLED					(0<<UPM01 | 0<<UPM00)
-#define PARITY_EVEN						(1<<UPM01 | 0<<UPM00)
-#define PARITY_ODD						(1<<UPM01 | 1<<UPM00)
-// Table 20-10 : Stop Bit Selection (USART Stop Bit Select)
-#define STOP_ONE_BIT					(0<<USBS0)
-#define STOP_TWO_BIT					(1<<USBS0)
-// Table 20-11 : Data Bit Selection (USART Character SiZe)
-#define DATA_FIVE_BIT					(0<<UCSZ02 | 0<<UCSZ01 | 0<<UCSZ00)
-#define DATA_SIX_BIT					(0<<UCSZ02 | 0<<UCSZ01 | 1<<UCSZ00)
-#define DATA_SEVEN_BIT					(0<<UCSZ02 | 1<<UCSZ01 | 0<<UCSZ00)
-#define DATA_EIGHT_BIT					(0<<UCSZ02 | 1<<UCSZ01 | 1<<UCSZ00)
-#define DATA_NINE_BIT					(1<<UCSZ02 | 1<<UCSZ01 | 1<<UCSZ00)
-// 20.11.3 : USART Control and Status Register B (UCSRnB)
-#define RECEIVER_DISABLED				(0<<RXEN0)
-#define RECEIVER_ENABLED				(1<<RXEN0)
-#define TRANSMITTER_DISABLED			(0<<TXEN0)
-#define TRANSMITTER_ENABLED				(1<<TXEN0)
-#define INTERRUPT_RECEIVER_DISABLED		(0<<RXCIE0)
-#define INTERRUPT_RECEIVER_ENABLED		(1<<RXCIE0)
-#define INTERRUPT_TRANSMITTER_DISABLED	(0<<TXCIE0)
-#define INTERRUPT_TRANSMITTER_ENABLED	(1<<TXCIE0)
-
-#endif // USART_H
\ No newline at end of file
diff --git a/module04/ex01/utils.h b/module04/ex01/utils.h
deleted file mode 100644
index 1dfefcb..0000000
--- a/module04/ex01/utils.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef UTILS_H
-#define UTILS_H
-
-// stringify
-#define STRINGIFY_HELPER(x)			#x
-#define STRINGIFY(x)				STRINGIFY_HELPER(x)
-
-// concatenate
-#define CONCAT_HELPER(x, y)			x ## y
-#define CONCAT(x, y)				CONCAT_HELPER(x, y)
-
-// mathematics
-#define PERCENT(percent, total)		(((float)percent / 100) * total)
-#define DIV_ROUND_CLOSEST(n, d)		((((n) < 0) == ((d) < 0)) ? (((n) + (d)/2)/(d)) : (((n) - (d)/2)/(d)))
-
-// text
-#define SWITCH_CASE(ch) (((ch) >= 'A' && (ch) <= 'Z') || ((ch) >= 'a' && (ch) <= 'z') ? ((ch) ^ (1 << 5)) : (ch))
-
-// boolean
-#define TRUE						1
-#define FALSE						0
-
-#endif // UTILS_H
\ No newline at end of file
diff --git a/module04/ex02/bitmanip.h b/module04/ex02/bitmanip.h
deleted file mode 100644
index 0808aec..0000000
--- a/module04/ex02/bitmanip.h
+++ /dev/null
@@ -1,61 +0,0 @@
-#ifndef BITMANIP_H
-#define BITMANIP_H
-
-#include "utils.h"
-
-// Bit operations on registers
-#define SET(register, bit)		(register |= (1 << (bit)))
-#define CLEAR(register, bit)	(register &= ~(1 << (bit)))
-#define TEST(register, bit)		(register & (1 << (bit)))
-#define TOGGLE(register, bit)	(register ^= (1 << (bit)))
-
-// Get arguments from tuple-like definitions
-#define ARG_1(v1, v2)			v1
-#define ARG_2(v1, v2)			v2
-#define GET_PORT(args)			ARG_1 args
-#define GET_BIT(args)			ARG_2 args
-// // version with "LED1 B, D1" without parenthesis
-// #define ARG_1(v1, ...)			v1
-// #define ARG_2(v1, v2, ...)		v2
-// #define GET_PORT(...)			ARG_1(__VA_ARGS__)
-// #define GET_BIT(...)			ARG_2(__VA_ARGS__)
-
-// Actions on elements
-// #define SET_ELEM(...)			SET(CONCAT(PORT, GET_PORT(__VA_ARGS__)), GET_BIT(__VA_ARGS__)) // version for "LED1 B, D1" without parenthesis
-#define SET_ELEM(elem)			SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define CLEAR_ELEM(elem)		CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define TEST_ELEM(elem)			TEST(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define TOGGLE_ELEM(elem)		TOGGLE(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-
-#define MODE_OUTPUT(elem)		SET(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
-#define MODE_INPUT(elem)		CLEAR(CONCAT(DDR, GET_PORT(elem)), GET_BIT(elem))
-#define TOGGLE_PIN(elem)		SET(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem))
-#define TEST_PIN(elem)			(TEST(CONCAT(PIN, GET_PORT(elem)), GET_BIT(elem)))
-#define IS_PIN_SET(elem)		(TEST_PIN(elem) == 0)
-#define IS_PIN_CLEAR(elem)		(TEST_PIN(elem) == 1)
-#define PULLUP_ON(elem)			SET(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-#define PULLUP_OFF(elem)		CLEAR(CONCAT(PORT, GET_PORT(elem)), GET_BIT(elem))
-
-// Bit definitions (<pin number> // <pin name>)
-#define D1 0	// PB0
-#define D2 1	// PB1
-#define D3 2	// PB2
-#define D4 4	// PB4
-#define SW1 2	// PD2
-#define SW2 4	// PD4
-#define D5B 3	// PD3
-#define D5R 5	// PD5
-#define D5G 6	// PD6
-
-// Elements (port, bit)
-#define LED1		(B, D1)
-#define LED2		(B, D2)
-#define LED3		(B, D3)
-#define LED4		(B, D4)
-#define BUTTON1		(D, SW1)
-#define BUTTON2		(D, SW2)
-#define RGB5_BLUE	(D, D5B)
-#define RGB5_RED	(D, D5R)
-#define RGB5_GEEN	(D, D5G)
-
-#endif // BITMANIP_H
\ No newline at end of file
diff --git a/module04/ex02/interrupt.h b/module04/ex02/interrupt.h
deleted file mode 100644
index 9668ef7..0000000
--- a/module04/ex02/interrupt.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef INTERRUPT_H
-#define INTERRUPT_H
-
-// 7.3.1 : SREG – AVR Status Register
-#define ENABLE_GLOBAL_INTERRUPT		(1<<SREG_I)
-#define DISABLE_GLOBAL_INTERRUPT	(0<<SREG_I)
-
-#endif // INTERRUPT_H
\ No newline at end of file
diff --git a/module04/ex02/timer.h b/module04/ex02/timer.h
deleted file mode 100644
index df4eaaa..0000000
--- a/module04/ex02/timer.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#ifndef TIMER_H
-#define TIMER_H
-
-// table 15-9 : timer 0 prescale sets
-#define T0_PRESCALE_SET(value)  \
-									((value) == 1   ? (0<<CS02 | 0<<CS01 | 1<<CS00) : \
-									 (value) == 8   ? (0<<CS02 | 1<<CS01 | 0<<CS00) : \
-									 (value) == 64  ? (0<<CS02 | 1<<CS01 | 1<<CS00) : \
-									 (value) == 256 ? (1<<CS02 | 0<<CS01 | 0<<CS00) : \
-									 (value) == 1024? (1<<CS02 | 0<<CS01 | 1<<CS00) : \
-													  (0<<CS02 | 0<<CS01 | 0<<CS00))
-#define TIME_MS(ms, prescale_value)	(((F_CPU / prescale_value) * ms) / 1000)
-
-// table 16-5 : timer 1 prescale sets
-#define T1_PRESCALE_SET(value)  \
-									((value) == 1   ? (0<<CS12 | 0<<CS11 | 1<<CS10) : \
-									 (value) == 8   ? (0<<CS12 | 1<<CS11 | 0<<CS10) : \
-									 (value) == 64  ? (0<<CS12 | 1<<CS11 | 1<<CS10) : \
-									 (value) == 256 ? (1<<CS12 | 0<<CS11 | 0<<CS10) : \
-									 (value) == 1024? (1<<CS12 | 0<<CS11 | 1<<CS10) : \
-													  (0<<CS12 | 0<<CS11 | 0<<CS10))
-#define TIME_MS(ms, prescale_value)	(((F_CPU / prescale_value) * ms) / 1000)
-
-// Table 16-4 : Waveform Generation Mode Bit Description
-#define CTC_TOP_OCR1A_IN_TCCR1B			(0<<WGM13 | 1<<WGM12)
-#define CTC_TOP_OCR1A_IN_TCCR1A									(0<<WGM11 | 0<<WGM10)
-#define CTC_TOP_ICR1_IN_TCCR1B			(1<<WGM13 | 1<<WGM12)
-#define CTC_TOP_ICR1_IN_TCCR1A									(0<<WGM11 | 0<<WGM10)
-#define FAST_PWM_TOP_OCR1A_IN_TCCR1B	(1<<WGM13 | 1<<WGM12)
-#define FAST_PWM_TOP_OCR1A_IN_TCCR1A							(1<<WGM11 | 1<<WGM10)
-#define FAST_PWM_TOP_ICR1_IN_TCCR1B		(1<<WGM13 | 1<<WGM12)
-#define FAST_PWM_TOP_ICR1_IN_TCCR1A								(1<<WGM11 | 0<<WGM10)
-// 16.11.8 : Timer/Counter1 Interrupt Mask Register
-#define INTERRUPT_ENABLE_CHANNEL_A		(1 << OCIE1A)
-#define INTERRUPT_DISABLE_CHANNEL_A		(0 << OCIE1A)
-
-#endif // TIMER_H
\ No newline at end of file
diff --git a/module04/ex02/usart.h b/module04/ex02/usart.h
deleted file mode 100644
index b930036..0000000
--- a/module04/ex02/usart.h
+++ /dev/null
@@ -1,31 +0,0 @@
-#ifndef USART_H
-#define USART_H
-
-#define BAUD_PRESCALER(usart_baudrate)	(DIV_ROUND_CLOSEST(F_CPU, (16 * usart_baudrate)) - 1)
-// Table 20-8 : Mode Selection (USART Mode SELect)
-#define ASYNCHRONOUS					(0<<UMSEL01 | 0<<UMSEL00)
-#define SYNCHRONOUS						(0<<UMSEL01 | 1<<UMSEL00)
-// Table 20-9 : Parity Bit Selection (USART Parity Mode)
-#define PARITY_DISABLED					(0<<UPM01 | 0<<UPM00)
-#define PARITY_EVEN						(1<<UPM01 | 0<<UPM00)
-#define PARITY_ODD						(1<<UPM01 | 1<<UPM00)
-// Table 20-10 : Stop Bit Selection (USART Stop Bit Select)
-#define STOP_ONE_BIT					(0<<USBS0)
-#define STOP_TWO_BIT					(1<<USBS0)
-// Table 20-11 : Data Bit Selection (USART Character SiZe)
-#define DATA_FIVE_BIT					(0<<UCSZ02 | 0<<UCSZ01 | 0<<UCSZ00)
-#define DATA_SIX_BIT					(0<<UCSZ02 | 0<<UCSZ01 | 1<<UCSZ00)
-#define DATA_SEVEN_BIT					(0<<UCSZ02 | 1<<UCSZ01 | 0<<UCSZ00)
-#define DATA_EIGHT_BIT					(0<<UCSZ02 | 1<<UCSZ01 | 1<<UCSZ00)
-#define DATA_NINE_BIT					(1<<UCSZ02 | 1<<UCSZ01 | 1<<UCSZ00)
-// 20.11.3 : USART Control and Status Register B (UCSRnB)
-#define RECEIVER_DISABLED				(0<<RXEN0)
-#define RECEIVER_ENABLED				(1<<RXEN0)
-#define TRANSMITTER_DISABLED			(0<<TXEN0)
-#define TRANSMITTER_ENABLED				(1<<TXEN0)
-#define INTERRUPT_RECEIVER_DISABLED		(0<<RXCIE0)
-#define INTERRUPT_RECEIVER_ENABLED		(1<<RXCIE0)
-#define INTERRUPT_TRANSMITTER_DISABLED	(0<<TXCIE0)
-#define INTERRUPT_TRANSMITTER_ENABLED	(1<<TXCIE0)
-
-#endif // USART_H
\ No newline at end of file
diff --git a/module04/ex02/utils.h b/module04/ex02/utils.h
deleted file mode 100644
index 1dfefcb..0000000
--- a/module04/ex02/utils.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef UTILS_H
-#define UTILS_H
-
-// stringify
-#define STRINGIFY_HELPER(x)			#x
-#define STRINGIFY(x)				STRINGIFY_HELPER(x)
-
-// concatenate
-#define CONCAT_HELPER(x, y)			x ## y
-#define CONCAT(x, y)				CONCAT_HELPER(x, y)
-
-// mathematics
-#define PERCENT(percent, total)		(((float)percent / 100) * total)
-#define DIV_ROUND_CLOSEST(n, d)		((((n) < 0) == ((d) < 0)) ? (((n) + (d)/2)/(d)) : (((n) - (d)/2)/(d)))
-
-// text
-#define SWITCH_CASE(ch) (((ch) >= 'A' && (ch) <= 'Z') || ((ch) >= 'a' && (ch) <= 'z') ? ((ch) ^ (1 << 5)) : (ch))
-
-// boolean
-#define TRUE						1
-#define FALSE						0
-
-#endif // UTILS_H
\ No newline at end of file