.clangd

@@ -1,2 +0,0 @@
-CompileFlags:
-  Add: -I/usr/avr/include

timer/main.c

@@ -1,61 +0,0 @@
-/*
- * Control PB5 with the two buttons. One button disables, the other enables.
- * The board uses interrupts for this. PB5 will quickly oscilate between on and
- * off to make cool sounds with a summer.
- */
-#define F_CPU 16000000UL
-#define __AVR_ATmega328P__
-#include <avr/interrupt.h>
-#include <avr/io.h>
-#include <util/delay.h>
-
-#define MINUTE 60 * 1000
-const int TIME = 45 * MINUTE;
-
-int volatile reset = 0;
-
-int alarm();
-
-// code for INT0
-ISR(INT0_vect) { reset = 1; }
-
-int main(void) {
-
-  DDRB = 0xff; // write to B
-  DDRD = 0;    // read from D
-
-  PORTD |= (1 << PORTD2) | (1 << PORTD3); // pull up D2 and D3
-
-  PORTB = 0; // pull down port B
-
-  // enable external interruprs
-  EIMSK |= (1 << INT0);
-  EIMSK |= (1 << INT1);
-
-  // trigger when anything changes
-  EICRA |= (1 << ISC00); // for INT0
-  EICRA |= (1 << ISC10); // for INT1
-
-  sei(); // interrupt magic macro
-  while (1) {
-    _delay_ms(TIME);
-    alarm();
-  }
-}
-
-int alarm(void) {
-  int sound = 0;
-  while (!reset) {
-    PORTB |= (1 << PORTB5);
-    _delay_us(sound);
-    PORTB &= ~(1 << PORTB5);
-    _delay_us(sound);
-    sound++;
-    if (sound > 1000) {
-      sound = 0;
-    }
-  }
-  reset = 0;
-  PORTB &= ~(1 << PORTB5);
-  return 0;
-}