Atmega32(l) – Rainbow Electronics ATmega32L User Manual

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ATmega32(L)

2503C–AVR–10/02

The following code example shows one assembly and one C function for turning off the
WDT. The example assumes that interrupts are controlled (for example by disabling
interrupts globally) so that no interrupts will occur during execution of these functions.

Assembly Code Example

WDT_off:

; Write logical one to WDTOE and WDE

ldi

r16, (1<

out

WDTCR, r16

; Turn off WDT

ldi

r16, (0<

out

WDTCR, r16

ret

C Code Example

void

WDT_off(void)

{

/* Write logical one to WDTOE and WDE */

WDTCR = (1<

/* Turn off WDT */

WDTCR = 0x00;

}