Extracted volumeDown to seperate file

include/constants.h

@@ -1,5 +1,8 @@
 #pragma once
 
+const int USER_STEPS = 2;
+const int STAFF_STEPS = 16;
+
 const int POT_CS = 10;
 const int POT_UD = 9;
 

include/userFunctions.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void volumeDown(int *userVolume, int *oldUserVolume);

src/ledControlls.cpp

@@ -1,5 +1,5 @@
 #include <Arduino.h>
-#include <pinDefinitions.h>
+#include <constants.h>
 #include <ledControlls.h>
 
 void resetLeds()

src/main.cpp

@@ -1,10 +1,8 @@
 #include <Arduino.h>
-#include <pinDefinitions.h>
+#include <constants.h>
 #include <potControlls.h>
 #include <ledControlls.h>
-
+#include <userFunctions.h>
-const int USER_STEPS = 2;
-const int STAFF_STEPS = 16;
 
 int maxVolume = 64;
 int userVolume = 64;
@@ -197,26 +195,7 @@ void loop()
   // Remote C - Volume Down
   if (debounceRead(REMOTE_C) && !(oldUserVolume > userVolume))
   {
-    if ((userVolume - USER_STEPS) < 0)
+    volumeDown(&userVolume, &oldUserVolume);
-    {
-      for (int i = 0; i < userVolume; i++)
-      {
-        potDecrement();
-      }
-
-      userVolume = 0;
-      oldUserVolume = userVolume;
-    }
-    else
-    {
-      for (int i = 0; i < USER_STEPS; i++)
-      {
-        potDecrement();
-      }
-
-      userVolume -= USER_STEPS;
-      oldUserVolume = userVolume;
-    }
   }
 }
 

src/potControlls.cpp

@@ -1,5 +1,5 @@
 #include <Arduino.h>
-#include <pinDefinitions.h>
+#include <constants.h>
 #include <potControlls.h>
 
 void potIncrement()

src/userFunctions.cpp

@@ -0,0 +1,27 @@
+#include <userFunctions.h>
+#include <constants.h>
+#include <potControlls.h>
+
+void volumeDown(int *userVolume, int *oldUserVolume)
+{
+    if ((*userVolume - USER_STEPS) < 0)
+    {
+        for (int i = 0; i < *userVolume; i++)
+        {
+            potDecrement();
+        }
+
+        *userVolume = 0;
+        *oldUserVolume = *userVolume;
+    }
+    else
+    {
+        for (int i = 0; i < USER_STEPS; i++)
+        {
+            potDecrement();
+        }
+
+        *userVolume -= USER_STEPS;
+        *oldUserVolume = *userVolume;
+    }
+}