Added a new very simple class to cleanly perform non blocking delays

src/app/NonBlockingDelay.cpp

@@ -0,0 +1,25 @@
+/**
+ * Author : Anatole SCHRAMM-HENRY
+ * Created on : 03/04/2022
+ * Licence : MIT
+ * 
+ * Dead simple object implementing a non blocking delay using the Arduino framework.
+ */
+#include "NonBlockingDelay.h"
+
+NonBlockingDelay::NonBlockingDelay(const unsigned long delay, unsigned long tickReference) : _delay(delay), _tickReference(tickReference){}
+
+void NonBlockingDelay::reset()
+{
+    _tickReference = millis();
+}
+
+NonBlockingDelay::operator bool()
+{
+    bool isTimeElapsed(millis() - _tickReference > _delay);
+
+    if(isTimeElapsed)
+        reset();
+
+    return isTimeElapsed;
+}

src/app/NonBlockingDelay.h

@@ -0,0 +1,27 @@
+/**
+ * Author : Anatole SCHRAMM-HENRY
+ * Created on : 03/04/2022
+ * Licence : MIT
+ * 
+ * Dead simple object implementing a non blocking delay using the Arduino framework.
+ */
+#ifndef NONBLOCKINGDELAY_H
+#define NONBLOCKINGDELAY_H
+
+#include <Arduino.h>
+
+class NonBlockingDelay
+{
+    public:
+        NonBlockingDelay(const unsigned long delay, unsigned long tickReference = millis());
+        
+        // Manually reset the internal tick reference
+        void reset();
+        operator bool();
+    protected:
+    private:
+        const unsigned long _delay;
+        unsigned long _tickReference;
+};
+
+#endif //NONBLOCKINGDELAY_H