msp430x54x_ucs_5.c

来自「msp430单片机最新的产品MSP430F5438内部硬件通信模块的操作的示例程」· C语言 代码 · 共 37 行

//******************************************************************************
//  MSP430F54x Demo - VLO sources ACLK
//
//  Description: This program demonstrates using VLO to source ACLK
//  ACLK = VLO = ~12kHz	
//
//                 MSP430F5438
//             -----------------
//         /|\|                 |
//          | |                 |
//          --|RST              |
//            |                 |
//            |                 |
//            |            P11.0|--> ACLK = ~12kHz
//            |                 |
//
//   M Smertneck / W. Goh
//   Texas Instruments Inc.
//   September 2008
//   Built with CCE Version: 3.2.2 and IAR Embedded Workbench Version: 4.11B
//******************************************************************************

#include "msp430x54x.h"

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog timer
  UCSCTL4 |= SELA_1;                        // VLO Clock Sources ACLK

  P11DIR = BIT0;                            // P11.0 to output direction
  P11SEL = BIT0;                            // P11.0 to output ACLK

  __bis_SR_register(LPM3_bits);             // Enter LPM3
  __no_operation();                         // For debugger  
}