msp430g2xx2 wdt 06

LPM3 is // entered, this example will demonstrate WDT+ feature by automatically // re-enabling WDT+ clock source as DCO if external XTAL fails.. This can be // seen as a continued, thoug

//****************************************************************************** // MSP430G2xx2 Demo - WDT+ Failsafe Clock, 32kHz ACLK

//

// Description; Allow WDT+ in watchdog to timeout sourced by ACLK LPM3 is // entered, this example will demonstrate WDT+ feature by automatically

// re-enabling WDT+ clock source as DCO if external XTAL fails This can be // seen as a continued, though faster as clocked by DCO, watchdog timeout

// which will toggle on P1.0 in main function

// ACLK = 32kHz, MCLK = SMCLK = default DCO

//

// MSP430G2xx2

//

-// /|\|

XIN|-// | | | 32kHz

// |RST

XOUT|-// | |

// | P1.0| >LED

//

// D Dang

// Texas Instruments, Inc

// December 2010

// Built with CCS Version 4.2.0 and IAR Embedded Workbench Version: 5.10

//******************************************************************************

#include <msp430g2452.h>

void main(void)

{

WDTCTL = WDT_ARST_1000; // Set Watchdog Timer timeout 1s P1DIR |= 0x01; // Set P1.0 to output

P1OUT ^= 0x01; // Toggle P1.0

_BIS_SR(LPM3_bits);

}