From 5f0dbc2e23b2267b556b5b7759298f708aef62fd Mon Sep 17 00:00:00 2001
From: Vineet K <git@vineetk.net>
Date: Sun, 21 Apr 2024 21:46:20 -0400
Subject: [PATCH] bypass _delay_ms and user timer instead for silent note

---
 notes.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/notes.c b/notes.c
index 44b24c0..8d082ad 100644
--- a/notes.c
+++ b/notes.c
@@ -196,7 +196,19 @@ play_note(unsigned char _note, unsigned short _cycles)
 		for (unsigned short i = 0; i < _cycles; i++)
 			playtone();
 	} else {
-		_delay_ms(_cycles);
+		// when note is 255, don't play anything for _cycles ms
+		// Prepare Timer/Counter
+		TCNT1 = 1;
+		OCR1A = 16e3 * _cycles / T1_PRESCALAR;
+		TCCR1B |= 1 << CS11;
+
+		// Monitor OutPut Compare Flag
+		while ((TIFR1 & (1 << OCF1A)) == 0);
+
+		// Toggles port For Speaker
+		PORTD ^= 1 << P_SPKR;
+		TIFR1 |= 1 << OCF1A;
+		TCCR1B &= ~(1 << CS11);
 	}
 }