原创 MSP430F2618基础实验1（LED灯控制）

工程文件：https://static.assets-stash.eet-china.com/album/old-resources/2009/2/10/b96a33fd-fb57-4dc0-9e60-7c37522c5ad7.rar

硬件原理图：

//*******************************************************************************
//  MSP430x26x Demo - Software Toggle P4.0 ~P4.3
//
//  Description: Toggle LED by xor'ing P4.0 ~P4.3 inside of a software loop.
//  ACLK= n/a, MCLK= SMCLK= default DCO ~1.045MHz
//
//               MSP430F261x/241x
//             -----------------
//         /|\|              XIN|-
//          | |                 |
//          --|RST          XOUT|-
//            |                 |
//            |             P4.0|-->LED1
//                          P4.1|-->LED2
//                          P4.2|-->LED3
//                          P4.3|-->LED4
//
//CDWXL:JY
//******************************************************************************

#include  <msp430x26x.h>

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog timer
  P4DIR |= 0x0F;                            // Set P4.0~P4.3 to output direction
  P4OUT |=0x0f;
  for (;;)
  {
    volatile unsigned int i;
    unsigned char n;
    for(n=0;n<4;n++)
    {
      P4OUT ^= (0x01<<n);                          // Toggle P1.0 using exclusive-OR

      i = 10000;                              // Delay
      do (i--);
      while (i != 0);

    }
  }
}