From 6708da2661d693f855b6f56d69af1e2fb8502463 Mon Sep 17 00:00:00 2001
From: Lars-Dominik Braun <lars@6xq.net>
Date: Tue, 23 Sep 2014 17:24:57 +0200
Subject: Add wakeup source mechanism

Should reduce amount of cpu wakeups with expensive computations.
---
 pwm.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'pwm.c')

diff --git a/pwm.c b/pwm.c
index 568ed73..944720e 100644
--- a/pwm.c
+++ b/pwm.c
@@ -19,7 +19,6 @@ static const uint8_t offbits[2] = {(uint8_t) ~((1 << PB6) | (1 << PB7)),
 		(uint8_t) ~((1 << PD2) | (1 << PD3) | (1 << PD4) | (1 << PD5) | (1 << PD6))};
 
 ISR(TIMER0_COMPA_vect) {
-#warning "speaker works now, led1 and 2 do not work"
 	if (speakerCount > 0) {
 		--speakerCount;
 		/* stop speaker after beep */
@@ -36,6 +35,8 @@ ISR(TIMER0_COMPA_vect) {
 
 	/* auto wrap-around */
 	count = (count+1) & (PWM_MAX_BRIGHTNESS-1);
+
+	/* no wakeup */
 }
 
 static uint8_t ledToArray (const uint8_t i) {
@@ -105,7 +106,7 @@ void pwmSet (const uint8_t i, const uint8_t value) {
 	}
 }
 
-void speakerStart (const speakerMode mode) {
+void speakerStart (const speakerMode mode __unused__) {
 	/* 12.8ms */
 	speakerCount = 100;
 	for (uint8_t i = 0; i < PWM_MAX_BRIGHTNESS; i += 2) {
-- 
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