From 36c8a5f897e23f663224ca3fd6cabd03b73d81fd Mon Sep 17 00:00:00 2001
From: Lea <lea@janderedev.xyz>
Date: Tue, 29 Aug 2023 20:54:39 +0200
Subject: [PATCH] optimise beeping code

---
 main.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/main.c b/main.c
index aed2e47..32ecf46 100644
--- a/main.c
+++ b/main.c
@@ -12,8 +12,8 @@
 
 int tick_timer_start =  0xffff - (F_CPU / 1024 / 1000); // 1ms
 volatile uint32_t ticks = 0;
+volatile beep_time = 0;
 volatile bool counting = false;
-volatile bool beeping = false;
 
 void start_timer() {
     // Sets the Clock Select. See table on page 157 the Atmel datasheet.
@@ -40,8 +40,9 @@ ISR(TIMER1_OVF_vect) {
 
     if (bit_is_set(PIND, PIND0)) {
         PORTD &= 0b11111110;
-    } else if (beeping) {
+    } else if (beep_time > 0) {
         PORTD |= 0b00000001;
+        beep_time--;
     }
 }
 
@@ -50,9 +51,7 @@ ISR(TIMER2_OVF_vect) {
 }
 
 void beep() {
-    beeping = true;
-    _delay_ms(50);
-    beeping = false;
+    beep_time = 50;
 }
 
 void main() {
@@ -82,7 +81,7 @@ void main() {
             ticks = 0;
             counting = false;
 
-            if (!pressed_clear) beep(50);
+            if (!pressed_clear) beep();
             pressed_clear = true;
         } else pressed_clear = false;
     }