#include <msp430x14x.h>
int btn1pressed()
{
	if(P4IN == 0x10)
	{
		return 1;
	}
	else
	{
		return 0;
	}
}

int btn2pressed()
{
	if(P4IN == 0x20)
	{
		return 1;
	}
	else
	{
		return 0;
	}
}

int btn3pressed()
{
	if(P4IN == 0x40)
	{
		return 1;
	}
	else
	{
		return 0;
	}
}

int btn4pressed()
{
	if(P4IN == 0x80)
	{
		return 1;
	}
	else
	{
		return 0;
	}
}

void delay(int x)
{
	int count;
	for (count = 0; count < x; count++);
}

void main()
{
	WDTCTL = WDTPW + WDTHOLD;
	P4DIR=12;
	while(1)
	{
		if(btn1pressed())
		{
			delay(400);
		}
		if(btn2pressed())
		{
			delay(500);
		}
		if(btn3pressed())
		{
			delay(600);
		}
		if(btn4pressed())
		{
			delay(700);
		}
	}
}