fet440_1.c

来自「MSP430F43x, MSP430F44x.zip c语言 例程」· C语言 代码 · 共 38 行

//*******************************************************************************
//  MSP-FET430P440 Demo - Software Toggle P5.1
//
//  Description: Toggle P5.1 by xor'ing P5.1 inside of a software loop.
//  ACLK = n/a, MCLK = SMCLK = default DCO
//
//                MSP430F449
//             -----------------
//         /|\|              XIN|-
//          | |                 |
//          --|RST          XOUT|-
//            |                 |
//            |             P5.1|-->LED
//
//  M. Buccini
//  Texas Instruments Inc.
//  Feb 2005
//  Built with IAR Embedded Workbench Version: 3.21A
//*****************************************************************************
#include  <msp430x44x.h>

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog timer
  P5DIR |= 0x02;                            // Set P5.1 to output direction

  for (;;)
  {
    volatile unsigned int i;

    P5OUT ^= 0x02;                          // Toggle P5.1 using exclusive-OR

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