From 89826c563e38a30d5bfc589905eb1202fa14b751 Mon Sep 17 00:00:00 2001
From: Leo C <erbl259-lmu@yahoo.de>
Date: Sat, 8 Sep 2018 20:29:11 +0200
Subject: [PATCH] move sys timer setup from main to timer.c

---
 avr/main.c      | 9 +++------
 avr/timer.c     | 9 +++++++++
 include/timer.h | 6 ++++--
 3 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/avr/main.c b/avr/main.c
index 1fba3cb..0a49a1f 100644
--- a/avr/main.c
+++ b/avr/main.c
@@ -110,7 +110,7 @@ void setup_avr(void)
 		_BV(PRUSART3) | _BV(PRUSART2) | _BV(PRUSART1);
 
 
-	/* disable analog comparator */
+	/* Disable analog comparator */
 	ACSR = _BV(ACD);
 	/* Ports */
 
@@ -118,11 +118,8 @@ void setup_avr(void)
 	CLKPR = _BV(CLKPCE);
 	CLKPR = 0;
 
-	/* Timer */
-	PRR1 &= ~_BV(PRTIM4);
-	OCR4A = F_CPU / 1000 - 1;	/* Timer4: 1000Hz interval */
-	TCCR4B = (0b00<<WGM42)|(0b001<<CS40); /* Normal Mode, Prescaler 1 */
-	TIMSK4 = _BV(OCIE4A);		/* Enable Output Compare A interrupt */
+	/* System timer */
+	setup_timer();
 
 	/* INT5, INT6: falling edge */
 	EICRB = (EICRB & ~((0b11 << ISC50) | (0b11 << ISC60))) |
diff --git a/avr/timer.c b/avr/timer.c
index 1b15985..03c86c8 100644
--- a/avr/timer.c
+++ b/avr/timer.c
@@ -47,6 +47,15 @@ ISR(TIMER4_COMPA_vect)
 	tick_10ms = i;
 }
 
+/*--------------------------------------------------------------------------*/
+
+void setup_timer(void)
+{
+	PRR1 &= ~_BV(PRTIM4);
+	OCR4A = F_CPU / 1000 - 1;	/* Timer4: 1000Hz interval */
+	TCCR4B = (0b00<<WGM42)|(0b001<<CS40); /* Normal Mode, Prescaler 1 */
+	TIMSK4 = _BV(OCIE4A);		/* Enable Output Compare A interrupt */
+}
 
 /*--------------------------------------------------------------------------*/
 
diff --git a/include/timer.h b/include/timer.h
index 83bc329..d604008 100644
--- a/include/timer.h
+++ b/include/timer.h
@@ -1,7 +1,7 @@
 /*
- * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
+ * (C) Copyright 2014,2018 Leo C. <erbl259-lmu@yahoo.de>
  *
- * SPDX-License-Identifier:	GPL-2.0+
+ * SPDX-License-Identifier:	GPL-2.0
  */
 
 #ifndef TIMER_H
@@ -9,6 +9,8 @@
 
 #include "common.h"
 
+void setup_timer(void);
+
 uint32_t get_timer(uint32_t);
 
 #endif /* TIMER_H */
-- 
2.39.2