From 0f01eda65f8c9c1dce4142045073c87679acfe8d Mon Sep 17 00:00:00 2001
From: hugogogo <hugogogo@protonmail.com>
Date: Wed, 5 Mar 2025 17:22:18 +0100
Subject: [PATCH] added comments on mod01 ex00

---
 module01/ex00/main.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/module01/ex00/main.c b/module01/ex00/main.c
index 3809963..ed512c0 100644
--- a/module01/ex00/main.c
+++ b/module01/ex00/main.c
@@ -25,7 +25,7 @@
 #define TURN_OFF_LED(bit)			CLEAR(PORTB, bit)
 #define TOGGLE_LED(led)				TOGGLE_PIN(B, led)
 
-
+// ELEMENTS
 #define D1 0
 #define D2 1
 #define D3 2
@@ -33,17 +33,18 @@
 #define SW1 2
 #define SW2 4
 
+// TIME
 #define PRESCALE_VALUE				1024
 #if (PRESCALE_VALUE == 1)
-	#define PRESCALE_SET (1 << CS10)
+	#define PRESCALE_SET			(1 << CS10)
 #elif (PRESCALE_VALUE == 8)
-	#define PRESCALE_SET (1 << CS11)
+	#define PRESCALE_SET			(1 << CS11)
 #elif (PRESCALE_VALUE == 64)
-	#define PRESCALE_SET (1 << CS10) | (1 << CS11)
+	#define PRESCALE_SET			(1 << CS10) | (1 << CS11)
 #elif (PRESCALE_VALUE == 256)
-	#define PRESCALE_SET (1 << CS12)
+	#define PRESCALE_SET			(1 << CS12)
 #elif (PRESCALE_VALUE == 1024)
-	#define PRESCALE_SET (1 << CS10) | (1 << CS12)
+	#define PRESCALE_SET			(1 << CS10) | (1 << CS12)
 #endif
 #define TIME_MS(ms)					(((F_CPU / PRESCALE_VALUE) * ms) / 1000)
 
@@ -51,12 +52,14 @@ int main() {
 	MODE_OUTPUT(B, D2);
 	TURN_OFF_LED(D2);
 
-	TCCR1B |= (PRESCALE_SET); // set timer with prescale
+	TCCR1B |= (PRESCALE_SET);				// set timer with prescale
+											//   -> set timer with bits CS10-12, in register TCCR1B : 16.4 Timer/Counter Clock Sources
+											//   -> prescale values : 16.11.2 TCCR1B – Timer/Counter1 Control Register B, table 16-5. Clock Select Bit Description
 
 	while(1) {
 		if ( TCNT1 >= TIME_MS(500)) {
 			TOGGLE_LED(D2);
-			TCNT1 = 0; // reset timer value
+			TCNT1 = 0;						// reset timer value
 		}
 	}
 }