mod01 ex02 works

module01/ex02/main.c

@@ -48,12 +48,47 @@
 #define BUTTON1	(D, SW1)
 #define BUTTON2	(D, SW2)
 
+// TIME
+#define PRESCALE_VALUE				1024
+#if (PRESCALE_VALUE == 1)
+	#define PRESCALE_SET			(1 << CS10)
+#elif (PRESCALE_VALUE == 8)
+	#define PRESCALE_SET			(1 << CS11)
+#elif (PRESCALE_VALUE == 64)
+	#define PRESCALE_SET			(1 << CS10) | (1 << CS11)
+#elif (PRESCALE_VALUE == 256)
+	#define PRESCALE_SET			(1 << CS12)
+#elif (PRESCALE_VALUE == 1024)
+	#define PRESCALE_SET			(1 << CS10) | (1 << CS12)
+#endif
+#define TIME_MS(ms)					(((F_CPU / PRESCALE_VALUE) * ms) / 1000)
+#define PERIOD						1000
+#define DUTY_CYCLE					10
+
 // END MACROS
 
-int main()
-{
-	MODE_OUTPUT(LED1);
-	SET_ELEM(LED1);
 
-    return 0;
+int main() {
+	MODE_OUTPUT(LED2);
+
+	// Table 16-4 : set timer in Fast PWM (Pulse With Modulation) mode with TOP = ICR1 (Mode 14)
+    SET(TCCR1A, WGM11);
+	SET(TCCR1B, WGM12);
+    SET(TCCR1B, WGM13);
+
+	// Table 16-2 : Non-inverting mode, the LED will be ON for DUTY_CYCLE% of the time (CLEAR OC1A on compare match, SET OC1A at BOTTOM)
+	SET(TCCR1A, COM1A1);
+
+    // set the period (compare TOP value)
+    ICR1 = TIME_MS(PERIOD);
+    
+    // set the duty cycle to DUTY_CYCLE% of the time
+    OCR1A = TIME_MS(DUTY_CYCLE);
+
+    // start the timer with the prescaler
+    TCCR1B |= (PRESCALE_SET);
+
+	while(1) {
+		continue;
+	}
 }