Add example timer code to HD4470.cpp and .h

HD44780.cpp

@@ -50,7 +50,8 @@ m_pwmDim(pwmDim),
 m_duplex(duplex),
 //m_duplex(true), // uncomment to force duplex display for testing!
 m_fd(-1),
-m_dmr(false)
+m_dmr(false),
+m_timer(1000U, 0U, 250U)		// 250ms
 {
 	assert(rows > 1U);
 	assert(cols > 15U);
@@ -679,6 +680,14 @@ void CHD44780::clearFusionInt()
 
 void CHD44780::clockInt(unsigned int ms)
 {
+	m_timer.clock(ms);
+	if (m_timer.isRunning() && m_timer.hasExpired()) {
+		// Do work every 250ms here
+
+		// Start the timer with m_timer.start();
+		// and stop it with m_timer.stop();
+		m_timer.start();
+	}
 }
 
 void CHD44780::close()

HD44780.h

@@ -20,6 +20,7 @@
 #define	HD44780_H
 
 #include "Display.h"
+#include "Timer.h"
 
 #include <string>
 #include <vector>
@@ -93,6 +94,7 @@ private:
 	bool         m_duplex;
 	int          m_fd;
 	bool         m_dmr;
+	CTimer       m_timer;
 
 #ifdef ADAFRUIT_DISPLAY
   void adafruitLCDSetup();