From b742ab3a288a1164b4ceb6e58ae42115d320d580 Mon Sep 17 00:00:00 2001
From: Lars-Dominik Braun <lars@6xq.net>
Date: Tue, 16 Sep 2014 15:31:53 +0200
Subject: Finally fix speaker

Use one timer for LED/speaker. Not sure why two did not work.
---
 speaker.c | 55 -------------------------------------------------------
 1 file changed, 55 deletions(-)
 delete mode 100644 speaker.c

(limited to 'speaker.c')

diff --git a/speaker.c b/speaker.c
deleted file mode 100644
index e96afcf..0000000
--- a/speaker.c
+++ /dev/null
@@ -1,55 +0,0 @@
-/*	speaker control, uses timer2
- */
-
-#include "common.h"
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <util/delay.h>
-#include <stdbool.h>
-#include <stdlib.h>
-
-#include "speaker.h"
-
-static volatile uint16_t count;
-
-/*	Compare interrupt
- */
-ISR(TIMER2_COMPA_vect) {
-	PORTD ^= (1 << PD6);
-	--count;
-	if (count == 0) {
-		speakerStop ();
-	}
-}
-
-void speakerInit () {
-	/* set PD6 to output */
-	DDRD |= (1 << PD6);
-	/* turn off */
-	PORTD = PORTD & ~(1 << PD6);
-}
-
-void speakerStart (const speakerMode mode) {
-	/* 12.8ms */
-	count = 100;
-
-	/* compare value (hit on every tick) */
-	OCR2A = 1;
-	/* reset timer value */
-	TCNT2 = 0;
-	/* set ctc mode */
-	TCCR2A = (1 << WGM21);
-	/* enable overflow interrupt */
-	TIMSK2 = (1 << OCIE2A);
-	/* io clock with 1024 prescaler -> ~4kHz tone, ctc part2 */
-	TCCR2B = (1 << CS22) | (1 << CS21) | (1 << CS20);
-}
-
-void speakerStop () {
-	/* zero clock source */
-	TCCR2B &= ~(0x7);
-	/* turn off */
-	PORTD = PORTD & ~(1 << PD6);
-}
-
-- 
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