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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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ATtiny261-ESSZ Scheda tecnica(PDF) 49 Page - ATMEL Corporation |
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ATtiny261-ESSZ Scheda tecnica(HTML) 49 Page - ATMEL Corporation |
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49 / 227 page  49 7753C–AVR–07/09 ATtiny261/ATtiny461/ATtiny861 The following code example shows one assembly and one C function for turning off the WDT. The example assumes that interrupts are controlled (e.g., by disabling interrupts globally) so that no interrupts will occur during execution of these functions. Note: 1. The example code assumes that the part specific header file is included. Assembly Code Example (1) WDT_off: WDR ; Clear WDRF in MCUSR ldi r16, (0<<WDRF) out MCUSR, r16 ; Write logical one to WDCE and WDE ; Keep old prescaler setting to prevent unintentional Watchdog Reset in r16, WDTCR ori r16, (1<<WDCE)|(1<<WDE) out WDTCR, r16 ; Turn off WDT ldi r16, (0<<WDE) out WDTCR, r16 ret C Code Example (1) void WDT_off(void) { _WDR(); /* Clear WDRF in MCUSR */ MCUSR = 0x00 /* Write logical one to WDCE and WDE */ WDTCR |= (1<<WDCE) | (1<<WDE); /* Turn off WDT */ WDTCR = 0x00; } |
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