LPC1768 Watchdog timer use

void Wwdg_init(void)

{

LPC_SC, PCLKSEL0 |= (3<<0); Crossover number is eight

LPC_WDT-Wdclksel &= ~ (3<<0);

LPC_WDT, Wdclksel |= (1<<0); Set WDT clock to APB

LPC_WDT, Wdclksel |= (1<<); Lock Clock Source

LPC_WDT-WDTC = 0xFFFF; Setting overloaded values

LPC_WDT, wdmod |= (1<<0) | ( 1<<1); Watchdog enable and set trigger reset

At this point the initialization is complete.

}

Shutdown Total System Interrupt

__asm void Nvic_setprimask(void)

{

Cpsid I

BX R14

}

Turn on total system outage

__asm void Nvic_resetprimask(void)

{

Cpsie I

BX R14

}

void Wwdg_feed(void)

{

Nvic_setprimask(); Disabling interrupts

LPC_WDT-wdfeed = 0xaa;

LPC_WDT-wdfeed = 0x55;

Nvic_resetprimask(); Re-open interrupts

}

LPC1768 Watchdog timer use