diff --git a/main.c b/main.c
index ea95c63..f598bd7 100644
--- a/main.c
+++ b/main.c
@@ -5,12 +5,12 @@
 #include "timer.h"
 #include "keyboard.h"
 #include "uart.h"
-#include "calculator.h"
+#include "spi_master.h"
 
 void setup_registers() {
 	MCUCR &= ~(1 << 4); // PUD
-	MCUCR &= ~(1 << 5); 
-	MCUCR &= ~(1 << 6); 
+	MCUCR &= ~(1 << 5);
+	MCUCR &= ~(1 << 6);
 	MCUCR &= ~(1 << 7);
 	DDRD &= 0x0F;
 	PORTD |= 0xF0;
@@ -21,21 +21,23 @@ void setup_registers() {
 
 void setup() {
 	USART_Init(MYUBRR);
+	SPI_MasterInit();
 	setup_timer();
 	setup_registers();
 }
 
+int up_amoumt = 0;
+int down_amount = 0;
+int diff = 0;
+int diff_prev = 0;
+
 int main(void) {
-	puts("Program started\r\n");
-	
 	setup();
-	
-	struct calculator calc;
+	puts("Hello\r\n");
 	struct key keys[KEYS_AMOUNT];
-	
-	fill_buttons_names(keys);
+	struct calculator calc;
 	clearCalc(&calc);
-	
+	fill_buttons_names(keys);
 	while(1) {
 		get_physical_keys(keys);
 		get_logical_keys(keys);
@@ -43,15 +45,18 @@ int main(void) {
 		for (int i = 0; i < KEYS_AMOUNT; i++) {
 			bool up, down;
 			get_event(&keys[i], &up, &down);
-			if (down) {
+			if (down)
+			{
+				//printf("button %d\r\n", keys[i].button);
 				handleCalc(&calc, keys[i].button);
-				printf("-------\r\n");
-				printf("%d\r\n", keys[i].button);
-				printf("%li\r\n", calc.num1);
-				printf("%li\r\n", calc.num2);
-				printf("%li\r\n", calc.result);
-				printf("%d\r\n", calc.operation);
-				printf("%d\r\n", calc.state);
+				output_on_display(&calc);
+				//printf("-----\r\n");
+				//printf("%ld\r\n", calc.num1);
+				//printf("%ld\r\n", calc.num2);
+				//printf("%ld\r\n", calc.result);
+				//printf("%d\r\n", calc.operation);
+				//printf("%d\r\n", calc.state);
+				
 			}
 		}
 	}
@@ -72,8 +77,8 @@ int printf( const char * format, ... )
 	va_start (args, format);
 	size_t s = vsprintf (buffer,format, args);
 	for(size_t i = 0; i < s; i++){
-			while (!(UCSR0A & (1<<UDREn)));
-			UDR0 = buffer[i];
+		while (!(UCSR0A & (1<<UDREn)));
+		UDR0 = buffer[i];
 	}
 	va_end (args);
 	return s;