Added basic External Beat clock mode. Still needs a lot of work

software/GToE/GToE.ino

@@ -151,15 +151,19 @@ void clock() {
       sendTriggers();
     }
 
+    if (masterClockMode == 2) {
+      updateTiming();
+    }
+
     //this part gets the Pulse and Ticks ticking
     //it's placed after the triggers to avoid problems on the start (when pulseCount==0)
     tickCount++;
-    if (masterClockMode == 0) {
+    if (masterClockMode == 0 || 2) {
       if (tickCount == pulsePeriod) {
         tickCount = 0;
         if (pulseCount < (PPQN-1)) { //-1 is here to avoid extra IF to reset to 0
           pulseCount++;
-        } else {
+        } else if (masterClockMode == 0) {
           pulseCount = 0;
         } 
       }
@@ -179,14 +183,15 @@ void externalClock() {
   lastExtPulseTime = newExtPulseTime;
   newExtPulseTime = millis();
 
-  //reset cycles if there was no pulses for a while
-  if ((newExtPulseTime - lastExtPulseTime) > 125) { //125ms is 20bpm
-    for (int i = 0; i<6; i++) { 
-      channelPulseCount[i] = 0;
-    }    
-  }
-
   if (masterClockMode == 1) {  // EXT-24
+
+    //reset cycles if there was no pulses for a while
+    if ((newExtPulseTime - lastExtPulseTime) > 125) { //125ms is 20bpm
+      for (int i = 0; i<6; i++) { 
+        channelPulseCount[i] = 0;
+      }    
+    }
+
     if (!isPlaying) {
       isPlaying = true;
     }
@@ -195,7 +200,13 @@ void externalClock() {
       pulseCount++;
     } else {
       pulseCount = 0;
-    } 
+    }
+  } else if (masterClockMode == 2) {  // EXT-Beat
+    if (!isPlaying) {
+      isPlaying = true;
+    }
+    pulseCount = 0;
+    tickCount = 0;
   }
 }