msp430x54x_pb_05.c

MSP430F5XXX的sample code

//******************************************************************************
//   msp430FG5438 Demo - Write a Word to Port B (Port3+Port4)
//
//   Description: Writes a Word(FFFFh) to Port B 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

  PBDIR |= 0x0FFFF;                         // PB.x output
  PBOUT |= 0x0FFFF;                         // Set all PB pins HI

  _BIS_SR(LPM4_bits + GIE);                 // LPM4
}