#include<msp430x16x.h>
void main()
{
WDTCTL = WDTPW + WDTHOLD;//關看門狗
unsigned int i=60000;
P1DIR &= ~BIT5;//輸入

P4DIR |= BIT0;
P4OUT |= BIT0;
while(1)
{
if((P1IN&BIT5)==0)//二鍵按下
{
while(i--);
i=60000;
if((P1IN&BIT5)==0)
{
while(P1IN&BIT5==0);
P4OUT ^=BIT0;//取反,黃燈
}
}
}

}