From 74a2d1cb904ae085ec10440a9beda7028a94e67c Mon Sep 17 00:00:00 2001
From: nick6x <nick.6.x@gmail.com>
Date: Sun, 30 Jul 2017 12:08:24 -0700
Subject: [PATCH] Update DDS.ino example for DDS library changes

---
 examples/DDS/DDS.ino | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/examples/DDS/DDS.ino b/examples/DDS/DDS.ino
index c738a5b..de6e916 100644
--- a/examples/DDS/DDS.ino
+++ b/examples/DDS/DDS.ino
@@ -18,6 +18,7 @@
 #define RESET_PIN A3
 #define SWITCH_PIN 2
 
+#define DDS_USE_ONLY_TIMER2 true
 #define TIMER2_PHASE_ADVANCE 24
 
 HamShield radio;
@@ -41,7 +42,7 @@ void setup() {
   radio.frequency(438000);
   radio.setModeTransmit();
   dds.start();
-  dds.startPhaseAccumulator(false);
+  dds.startPhaseAccumulator(DDS_USE_ONLY_TIMER2);
   dds.playWait(600, 3000);
   dds.on();
   //dds.setAmplitude(31);
@@ -55,23 +56,21 @@ void loop() {
 }
 
 
-//Uncomment if using dds.startPhaseAccumulator(true);
-/*ISR(TIMER2_OVF_vect) {
+#if DDS_USE_ONLY_TIMER2
+ISR(TIMER2_OVF_vect) {
   static unsigned char tcnt = 0;
   if(++tcnt == TIMER2_PHASE_ADVANCE) {
     tcnt = 0;
     dds.clockTick();
   }
-}*/
-
-//Comment if using dds.startPhaseAccumulator(true);
-ISR(ADC_vect) {
-  if(false){
-    static unsigned char tcnt = 0;
-    TIFR1 = _BV(ICF1); // Clear the timer flag
-    if(++tcnt == 4) {
-      tcnt = 0;
-    }
-    dds.clockTick();
-  }
 }
+#else // Use the ADC timer instead
+ISR(ADC_vect) {
+  static unsigned char tcnt = 0;
+  TIFR1 = _BV(ICF1); // Clear the timer flag
+  if(++tcnt == 4) {
+    tcnt = 0;
+  }
+  dds.clockTick();
+}
+#endif