From 6091b368d6e91c2f2d4bf03faab63693f4666075 Mon Sep 17 00:00:00 2001
From: Kai Ryu <kai1103@gmail.com>
Date: Thu, 17 Jul 2014 14:16:35 +0900
Subject: [PATCH] Add macro to make breathing led to use timer1 if timer3 is in
 other use

---
 common/breathing_led.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/common/breathing_led.c b/common/breathing_led.c
index 4e4822f8..11346e8f 100644
--- a/common/breathing_led.c
+++ b/common/breathing_led.c
@@ -10,6 +10,18 @@ static uint8_t breathing_led_duration = 0;
 
 void breathing_led_init(void)
 {
+#ifdef BREATHING_LED_TIMER1
+    /* Timer1 setup */
+    /* CTC mode */
+    TCCR1B |= (1<<WGM12);
+    /* Clock selelct: clk/8 */
+    TCCR1B |= (1<<CS10);
+    /* Set TOP value */
+    uint8_t sreg = SREG;
+    cli();
+    OCR1AH = (BREATHING_LED_TIMER_TOP>>8)&0xff;
+    OCR1AL = BREATHING_LED_TIMER_TOP&0xff;
+#else
     /* Timer3 setup */
     /* CTC mode */
     TCCR3B |= (1<<WGM32);
@@ -20,28 +32,44 @@ void breathing_led_init(void)
     cli();
     OCR3AH = (BREATHING_LED_TIMER_TOP>>8)&0xff;
     OCR3AL = BREATHING_LED_TIMER_TOP&0xff;
+#endif
     SREG = sreg;
 }
 
 void breathing_led_enable(void)
 {
     /* Enable Compare Match Interrupt */
+#ifdef BREATHING_LED_TIMER1
+    TIMSK1 |= (1<<OCIE1A);
+    dprintf("breathing led on: %u\n", TIMSK1 & (1<<OCIE1A));
+#else
     TIMSK3 |= (1<<OCIE3A);
     dprintf("breathing led on: %u\n", TIMSK3 & (1<<OCIE3A));
+#endif
 }
 
 void breathing_led_disable(void)
 {
     /* Disable Compare Match Interrupt */
+#ifdef BREATHING_LED_TIMER1
+    TIMSK1 &= ~(1<<OCIE1A);
+    dprintf("breathing led off: %u\n", TIMSK1 & (1<<OCIE1A));
+#else
     TIMSK3 &= ~(1<<OCIE3A);
     dprintf("breathing led off: %u\n", TIMSK3 & (1<<OCIE3A));
+#endif
 }
 
 void breathing_led_toggle(void)
 {
     /* Disable Compare Match Interrupt */
+#ifdef BREATHING_LED_TIMER1
+    TIMSK1 ^= (1<<OCIE1A);
+    dprintf("breathing led toggle: %u\n", TIMSK1 & (1<<OCIE1A));
+#else
     TIMSK3 ^= (1<<OCIE3A);
     dprintf("breathing led toggle: %u\n", TIMSK3 & (1<<OCIE3A));
+#endif
 }
 
 void breathing_led_set_duration(uint8_t dur)
@@ -60,7 +88,11 @@ static const uint8_t breathing_table[256] PROGMEM = {
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 8, 8, 9, 10, 11, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 26, 27, 29, 30, 32, 34, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 56, 58, 61, 63, 66, 68, 71, 74, 77, 80, 83, 86, 89, 92, 95, 98, 102, 105, 108, 112, 116, 119, 123, 126, 130, 134, 138, 142, 145, 149, 153, 157, 161, 165, 169, 173, 176, 180, 184, 188, 192, 195, 199, 203, 206, 210, 213, 216, 219, 223, 226, 228, 231, 234, 236, 239, 241, 243, 245, 247, 248, 250, 251, 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 254, 253, 252, 251, 250, 248, 247, 245, 243, 241, 239, 236, 234, 231, 228, 226, 223, 219, 216, 213, 210, 206, 203, 199, 195, 192, 188, 184, 180, 176, 173, 169, 165, 161, 157, 153, 149, 145, 142, 138, 134, 130, 126, 123, 119, 116, 112, 108, 105, 102, 98, 95, 92, 89, 86, 83, 80, 77, 74, 71, 68, 66, 63, 61, 58, 56, 53, 51, 49, 47, 45, 43, 41, 39, 37, 35, 34, 32, 30, 29, 27, 26, 25, 23, 22, 21, 19, 18, 17, 16, 15, 14, 13, 12, 11, 11, 10, 9, 8, 8, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0
 };
 
+#ifdef BREATHING_LED_TIMER1
+ISR(TIMER1_COMPA_vect)
+#else
 ISR(TIMER3_COMPA_vect)
+#endif
 {
     static uint8_t index = 0;
     static uint8_t step = 0;