四位len灯流水

#include <msp430x14x.h>
//#include<intrins.h>
#define uint unsigned int
void delay(long c);
void main( void )
{
  uint i=0;
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  P2DIR=0x0f;
  P2OUT=0x0e;
  while(1)
  { 
    for(i=0;i<4;i++)
    {
      delay(100000);
      P2OUT<<=1;
      P2OUT|=0x01;
      if(P2OUT==0xef)
      {
        P2OUT=0x0b;
      }
    }
    //P2OUT=0x0d;
    for(i=0;i<3;i++)
    {
      delay(100000);
      P2OUT>>=1;
      P2OUT|=0x08;
    }
    P2OUT=0x0e;
  }

}

void delay(long c)
{
  while(c--);
}