From 4976af6a8458b8263abceb19368e95688031fb9a Mon Sep 17 00:00:00 2001
From: brett <brett@bretts-windows-laptop>
Date: Thu, 25 Apr 2024 00:09:09 -0500
Subject: doooone

---
 final_project/clock.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

(limited to 'final_project/clock.c')

diff --git a/final_project/clock.c b/final_project/clock.c
index 7c216fc..ce4ee11 100644
--- a/final_project/clock.c
+++ b/final_project/clock.c
@@ -10,22 +10,24 @@ void timer_init_ctc() {
 	TCCR1A = 0x00; //WGM10 = 0, WGM11 = 0 (CTC mode when combined with WGM12 in TCCR1B)
 	TCCR1B = (1 << WGM12);
 	TCNT1 = 0; // initialize timer at 0
-	//TIMSK1 |= (1<<OCIE1A); // enable int at timer1
 
 }
 
 void start_timer() {
 	TCNT1 = 0;
-	OCR1A = 0x3d09; // 1 second
-	if(TIFR1 & (1 << OCF1A)) TIFR1 |= (1 << OCF1A);
-	TCCR1B |=  (1<<CS12) | (1 << CS10); //start timer with 1024 prescalar
+	//OCRN1A = (seconds to wait / (prescaler / f_cpu))
+	OCR1A = 0x3d09; // we'll only need to delay 1 second 
+	if(TIFR1 & (1 << OCF1A)) TIFR1 |= (1 << OCF1A); //discard possible compare match
+	TCCR1B |=  (1<<CS12) | (1 << CS10); //start timer with 1024 prescaler
 }
 
+//disable timer
 void stop_timer() {
-	if(TIFR1 & (1 << OCF1A)) TIFR1 |= (1 << OCF1A);
-	TIMSK1 = (1 << WGM12);
+	if(TIFR1 & (1 << OCF1A)) TIFR1 |= (1 << OCF1A); //discard possible compare match
+	TIMSK1 = (1 << WGM12); //no clock source
 }
 
+//see if a second pas passed since start_timer
 bool timer_done() {
-	return (TIFR1 & (1 << OCF1A)); 
+	return (TIFR1 & (1 << OCF1A)); //check if compare match
 }
\ No newline at end of file
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