MSP430F249GPIO控制入门

#include "MSP430x24x.h"


void main(void)
{
// Stop watchdog timer to prevent time out reset
WDTCTL = WDTPW + WDTHOLD; //关狗

P4DIR = BIT0|BIT1|BIT2|BIT3; //设置为输出
P4SEL = 0;

while(1)
{


volatile unsigned int i;


P4OUT ^= 0x0F; //电平翻转


i = 50000; // Delay
do (i--);
while (i != 0);
}



}