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Timer0 blink (interrupt-driven)

An original public-domain ATtiny85 program. It configures Timer0 in CTC mode with a /1024 prescaler and enables the compare-match A interrupt (OCIE0A); the main loop does nothing but the COMPA interrupt service routine toggles the onboard LED (PB1) on every compare match. Exercises the ATtiny85 interrupt vector table and avr8js's timer + interrupt delivery. (The ATtiny85's other timer, the PLL-clocked async Timer1, is not modelled by avr8js, so the well-supported Timer0 is used.)

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Format: Compiled ATtiny85 flash image (16-bit words, base64)  ·  By: emulators.org  ·  Licence: Public domain