From bb17abaa908c1e8d919bef837822a96643cfd43e Mon Sep 17 00:00:00 2001
From: Lea <lea@janderedev.xyz>
Date: Tue, 29 Aug 2023 19:11:48 +0200
Subject: [PATCH] add reset button

---
 main.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/main.c b/main.c
index 154713a..6ef26d9 100644
--- a/main.c
+++ b/main.c
@@ -12,6 +12,7 @@
 
 int timer_start =  0xffff - (F_CPU / 1024 / 1000);
 volatile uint32_t ticks = 0;
+volatile bool counting = false;
 
 void start_timer() {
     // Sets the Clock Select. See table on page 157 the Atmel datasheet.
@@ -37,7 +38,7 @@ void main() {
 // is triggered whenever timer 1 (16 bit) overflows.
 ISR(TIMER1_OVF_vect) {
     TCNT1 = timer_start; // TODO figure out how to get the correct number
-    ticks += 1;
+    if (counting) ticks += 1;
 }
 
 void prog_7segment() {
@@ -69,26 +70,25 @@ void prog_7segment() {
 void prog_7segment_4digit() {
     DDRF  = 0b11111111;
     DDRK  = 0b00001111;
-    PORTK = 0b10000000; // set pull-up
+    PORTK = 0b11000000; // set pull-up
 
     float num = 0.0f;
-    bool running = false;
-    bool pressed = false;
+    bool pressed_pause = false;
 
     while(1) {
         show_float(ticks / 1000.0f);
         float sleep_time = update_display();
 
-        if (!pressed && bit_is_clear(PINK, PINK7)) {
-            running = !running;
-            pressed = true;
-        } else if (pressed && bit_is_set(PINK, PINK7)) {
-            pressed = false;
+        if (!pressed_pause && bit_is_clear(PINK, PINK7)) {
+            counting = !counting;
+            pressed_pause = true;
+        } else if (pressed_pause && bit_is_set(PINK, PINK7)) {
+            pressed_pause = false;
         }
 
-        if (running) {
-            num += sleep_time / 1000.0f / 1000.0f;
-            if (num >= 10000) num = 0.0f;
+        if (bit_is_clear(PINK, PINK6)) {
+            ticks = 0;
+            counting = false;
         }
     }
 }