starttriggerblinking.c

Led blinking for msp430

//******************************************************************************
//  MSP430x2xx Demo - Software Toggle P1.0
//
//  Description; Toggle P1.0 by xor'ing P1.0 inside of a software loop.
//  ACLK = n/a, MCLK = SMCLK = default DCO
//
//                MSP430x2xx
//             -----------------
//         /|\|              XIN|-
//          | |                 |
//          --|RST          XOUT|-
//            |                 |
//            |             P1.0|-->LED
//
//  A. Dannenberg
//  Texas Instruments, Inc
//  January 2006
//  Built with CCE for MSP430 Version: 3.0
//******************************************************************************

#include "msp430x20x3.h"

int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;             // Stop watchdog timer

  P1DIR = 0xF3;                       
  P1SEL = 0x00;                        
//  SD16EA = 0x70;						

  P2DIR = 0x80;                       
  P2SEL = 0x00;
                          
  P1OUT = 0x00;
  P2OUT = 0x00;
 
  for (;;)
  {
    volatile unsigned int i, j;            // volatile to prevent optimization

    j = 10;
    do 
    {
      i = 10000;
      while (i-- != 0);
    }
    while (j-- !=0);
	

    P1OUT &= 0x01;
     
    if (P2IN & 0x40)
      P1OUT |= 0x01;
    else
      P1OUT &= ~0x01;

  }
}