Scheduler callback argument preliminary support (Issue Toshik#4)

Example: t.add(0, 1000, [&](int*arg) { Serial.println((int)*arg); }, &arg);

TickerScheduler.cpp

@@ -25,24 +25,25 @@ void TickerScheduler::handleTickerFlag(volatile bool * flag)
 		*flag = true;
 }
 
-void TickerScheduler::handleTicker(tscallback_t f, volatile bool * flag)
+void TickerScheduler::handleTicker(tscallback_t f, void * arg, volatile bool * flag)
 {
     if (*flag)
     {
         yield();
         *flag = false;
         yield();
-        f();
+        f(arg);
         yield();
     }
 }
 
-bool TickerScheduler::add(uint8_t i, uint32_t period, tscallback_t f, boolean shouldFireNow)
+bool TickerScheduler::add(uint8_t i, uint32_t period, tscallback_t f, void* arg, boolean shouldFireNow)
 {
     if (i >= this->size || this->items[i].is_used)
         return false;
 
     this->items[i].cb = f;
+    this->items[i].cb_arg = arg;
     this->items[i].flag = shouldFireNow;
     this->items[i].period = period;
     this->items[i].is_used = true;
@@ -116,7 +117,7 @@ void TickerScheduler::update()
 			this->items[i].t.Tick();
 			#endif
 
-			handleTicker(this->items[i].cb, &this->items[i].flag);
+			handleTicker(this->items[i].cb, this->items[i].cb_arg, &this->items[i].flag);
 		}
         yield();
     }

TickerScheduler.h

@@ -51,14 +51,15 @@ void tickerFlagHandle(volatile bool * flag);
 #ifdef _GLIBCXX_FUNCTIONAL
 typedef std::function<void(void)> tscallback_t;
 #else
-typedef void(*tscallback_t)(void);
+typedef void(*tscallback_t)(void*);
 #endif
 
 struct TickerSchedulerItem
 {
     Ticker t;
     volatile bool flag = false;
     tscallback_t cb;
+	void * cb_arg;
     uint32_t period;
     volatile bool is_used = false;
 };
@@ -69,14 +70,14 @@ class TickerScheduler
 	uint8_t size;
     TickerSchedulerItem *items = NULL;
 
-    void handleTicker(tscallback_t, volatile bool * flag);
+    void handleTicker(tscallback_t, void *, volatile bool * flag);
 	static void handleTickerFlag(volatile bool * flag);
 
 public:
     TickerScheduler(uint8_t size);
     ~TickerScheduler();
 
-    bool add(uint8_t i, uint32_t period, tscallback_t, boolean shouldFireNow = false);
+    bool add(uint8_t i, uint32_t period, tscallback_t, void *, boolean shouldFireNow = false);
     bool remove(uint8_t i);
     bool enable(uint8_t i);
     bool disable(uint8_t i);