msp430x54x_pa_05.c

来自「MSP430的开发程序的例子+中文注释」· C语言 代码 · 共 32 行

//******************************************************************************
//   msp430FG5438 Demo - Write a Word to Port A (Port1+Port2)
//
//   Description: Writes a Word(FFFFh) to Port A and stays in LPM4
//   ACLK = 32.768kHz, MCLK = SMCLK = default DCO
//
//               msp430FG5438
//             -----------------
//         /|\|                 |
//          | |                 |
//          --|RST              |
//            |                 |
//            |                 |
//
//   M Smertneck
//   Texas Instruments Inc.
//   April 2008
//   Built with CCEv3.2 IAR Embedded Workbench Version: 3.42A
//******************************************************************************

#include <msp430x54x.h>

void main(void)
{
  WDTCTL = WDTPW+WDTHOLD;                   // Stop WDT

  PADIR |= 0x0FFFF;                         // PA.x output
  PAOUT |= 0x0FFFF;                         // Set all PA pins HI

  _BIS_SR(LPM4_bits + GIE);                 // LPM4
}