From a3192fc431ab39b25befab3b146f39096cced0bc Mon Sep 17 00:00:00 2001
From: Marco <mgross@sw-gross.de>
Date: Sun, 29 May 2022 16:47:15 +0200
Subject: [PATCH] Introduce functions that configures Timer 1 with Fast PWM.

---
 src/include/timer.h |  1 +
 src/timer.c         | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/src/include/timer.h b/src/include/timer.h
index a751398..828c4f3 100644
--- a/src/include/timer.h
+++ b/src/include/timer.h
@@ -1,3 +1,4 @@
+void initPwmTimer1(void);
 void initCtcTimer0(void);
 void initOverflowTimer0(void);
 void initOverflowTimer1(void);
\ No newline at end of file
diff --git a/src/timer.c b/src/timer.c
index c04ad11..1fbc712 100644
--- a/src/timer.c
+++ b/src/timer.c
@@ -6,6 +6,28 @@
 
 #include "include/timer.h"
 
+void initPwmTimer1(void)
+{
+	/* Enable Fast PWM with TOP in OCR1A */
+	TCCR1A |= (1 << WGM11) | (1 << WGM10);
+	TCCR1B |= (1 << WGM13) | (1 << WGM12);
+
+	/* Clock prescaler of 8 */
+	TCCR1B |= (1 << CS11);
+
+	/* Set OC1B on compare match, clear OC1B at TOP */
+	TCCR1A |= (1 << COM1B1);
+
+	/* Enable Counter1 Compare Match B Interrupt */
+	TIMSK1 |= (1 << OCIE1B);
+
+	/* TOP value */
+	OCR1A = 1000;
+
+	/* Compare Match with OCR1B */
+	OCR1B = 900;
+}
+
 void initCtcTimer0(void)
 {
 	/* Initialize counter 0 */