Added tasks function definition and implementation files

src/app/tasks.cpp

@@ -0,0 +1,20 @@
+#include "tasks.h"
+
+boolean task1(void *pData)
+{
+  Serial.println("Hi, i am the task one");
+
+  return true;
+}
+
+boolean task2(void *pData)
+{
+  Serial.println("Hi, i am the task two");
+
+  return true;
+}
+boolean task_blink(void *pData)
+{
+  SAB *p = (SAB *) pData;
+  p->getIoManager().getPcf().togglePin(PCF8574::P2);
+}

src/app/tasks.h

@@ -0,0 +1,10 @@
+#ifndef TASKS_H
+#define TASKS_H
+#include <Arduino.h>
+#include "SAB.h"
+
+boolean task1(void *);
+boolean task2(void *);
+boolean task_blink(void *);
+
+#endif //TASKS_H