added reDraw() for MicroViewWidget class

MicroView.h

@@ -226,6 +226,7 @@ private:
 
 class MicroViewWidget {
 public:
+	bool needToDrawPrev;
 	MicroViewWidget(uint8_t newx, uint8_t newy, int16_t min, int16_t max);
 	uint8_t getX();
 	uint8_t getY();
@@ -242,6 +243,8 @@ public:
     virtual void draw(){};
     /** \brief Draw widget face overridden by child class. */
 	virtual void drawFace(){};
+	/** \brief ReDraw widget overridden by child class. */
+	virtual void reDraw(){};
 	
 private:
 	uint8_t x;
@@ -257,6 +260,7 @@ public:
 	MicroViewSlider(uint8_t newx, uint8_t newy, int16_t min, int16_t max, uint8_t sty);
 	void draw();
 	void drawFace();
+	void reDraw();
 private:
 	uint8_t totalTicks, style;
 	bool needFirstDraw;
@@ -269,6 +273,7 @@ public:
 	MicroViewGauge(uint8_t newx, uint8_t newy, int16_t min, int16_t max, uint8_t sty);
 	void draw();
 	void drawFace();
+	void reDraw();
 private:
 	uint8_t radius, style;
 	bool needFirstDraw;
@@ -339,6 +344,5 @@ void MVSPIClass::detachInterrupt() {
   SPCR &= ~_BV(SPIE);
 }
 
-
 extern MicroView uView;
 #endif

README.md

@@ -83,6 +83,7 @@ void loop() {
 void setup() {
     uView.begin();
     uView.clear(PAGE);
+	Serial.begin(115200);	// user decide the baud rate
 }
 
 void loop() {
@@ -91,6 +92,10 @@ void loop() {
 </code></pre>
 
 ## History
+**v1.17b: 4th August 2014 by JP Liew**
+* added reDraw() for MicroViewWidget class
+* removed Serial.begin() from uView.begin() so that user can have control
+
 **v1.16b: 3rd August 2014 by czetie**
 * added vertical slider widget
 
@@ -143,7 +148,7 @@ void loop() {
 
 **v1.05b: 6th February 2014 by JP Liew**
 * changed MICROVIEW class name to MicroView
-* created MICROVIEWWIDGET class
+* created MicroViewWidget class
 * added routines to draw widget
 * added slider widget
 * merged MicroViewWidget into MicroView