From 189a19259748324ff9a62b41ccdca9104e35f828 Mon Sep 17 00:00:00 2001
From: Allen Chak <allenchak@gmail.com>
Date: Thu, 6 Jun 2019 15:10:55 +0800
Subject: [PATCH] Due to ATmeg8/8A does not have register "TCCR2A", using marco
 to bypass the related code. PS: ATmega8/8A can use PWM pin 9 or 10 in
 IRSenderPWM mode ONLY.

---
 IRSenderPWM.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/IRSenderPWM.cpp b/IRSenderPWM.cpp
index f217f1b..efac7a8 100644
--- a/IRSenderPWM.cpp
+++ b/IRSenderPWM.cpp
@@ -119,6 +119,7 @@ void IRSenderPWM::setFrequency(int frequency)
       OCR5A = pwmval16 / 3;
 #else
 // Arduino Duemilanove etc
+#if !defined(__AVR_ATmega8__)
     case 3:
       // Fall-through to 11, timer2 controls both 3 and 11
     case 11:
@@ -127,6 +128,7 @@ void IRSenderPWM::setFrequency(int frequency)
       OCR2A = pwmval8;
       OCR2B = pwmval8 / 3;
       break;
+#endif
     case 9:
       // Fall-through to 10, timer1 controls both 9 and 10
     case 10:
@@ -176,18 +178,22 @@ void IRSenderPWM::mark(int markLength)
       break;
 #else
 // Arduino Duemilanove etc
+#if !defined(__AVR_ATmega8__)
     case 3:
       (TCCR2A |= _BV(COM2B1)); // Enable pin 3 PWM output
       break;
+#endif
     case 9:
       (TCCR1A |= _BV(COM1A1)); // Enable pin 9 PWM output
       break;
     case 10:
       (TCCR1A |= _BV(COM1B1)); // Enable pin 10 PWM output
       break;
+#if !defined(__AVR_ATmega8__)
     case 11:
       (TCCR2A |= _BV(COM2A1)); // Enable pin 11 PWM output
       break;
+#endif
 #endif
   }
 #endif
@@ -227,19 +233,23 @@ void IRSenderPWM::space(int spaceLength)
       (TCCR5A &= ~(_BV(COM5A1))); // Disable pin 46 PWM output on Arduino Mega
 #else
 // Arduino Duemilanove etc
+#if !defined(__AVR_ATmega8__)
     case 3:
       (TCCR2A &= ~(_BV(COM2B1))); // Disable pin 3 PWM output
       break;
+#endif
     case 9:
       (TCCR1A &= ~(_BV(COM1A1))); // Disable pin 9 PWM output
       break;
     case 10:
       (TCCR1A &= ~(_BV(COM1B1))); // Disable pin 10 PWM output
       break;
+#if !defined(__AVR_ATmega8__)
     case 11:
       (TCCR2A &= ~(_BV(COM2A1))); // Disable pin 11 PWM output
       break;
 #endif
+#endif
 }
 #endif