#include #include "mystd.h" #include "timer.h" #include "uart.h" #include "utils.h" int main(void) { uart_init(); timer1_init(); // DDRB |= _BV(PB0); while (true) { } } // This function is automatically called on TIMER1 Compare Match A interrupt void __attribute__((signal)) __vector_11(void) { uart_sendstring("Hello World!\r\n"); // PORTB ^= (1 << PB0); }