msp430-tusb3410_fet1.c

桦宣430研讨会资料盘里的430源码资料

//******************************************************************************
//  FET1 Demo - Software Toggle P4.1/3/5/7
//
//  Description; Toggles the LEDs on the MSP430-TUSB3410 Reference Design
//  board by xor'ing P4.1/3/5/7 inside of a software loop.
//  ACLK= n/a, MCLK= SMCLK= default DCO ~ 800k
//
//                MSP430F1612
//             -----------------
//         /|\|              XIN|-
//          | |                 |
//          --|RST          XOUT|-
//            |                 |
//            |             P4.1|-->LED
//            |             P4.3|-->LED
//            |             P4.5|-->LED
//            |             P4.7|-->LED
//
//  A. Dannenberg
//  Texas Instruments, Inc
//  October 2005
//  Built with IAR Embedded Workbench V3.30
//******************************************************************************

#include "msp430x16x.h"

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;             // Stop watchdog timer
  P4OUT = 0x00;                         // Clear output latch
  P4DIR |= 0xaa;                        // Set P4.1/3/5/7 to output direction

  for (;;)
  {
    volatile unsigned int i;

    P4OUT ^= 0xaa;                      // Toggle LEDs using exclusive-OR

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