Version 2.0.1

CHANGES.txt

@@ -1,3 +1,8 @@
+Version 2.0.1
+
+- ISSUE #15: Backwards compatibility with previous Arduino IDE (pure virtual functions were not supported);
+- ISSUE #18: Corrected problem with setLEDs() caused by changes in the previous version.
+
 Version 2.0.0
 
 - Support for the TM1640;

TM1638.cpp

@@ -82,11 +82,11 @@ void TM1638::setLEDs(word leds)
   for (int i = 0; i < displays; i++) {
     byte color = 0;
 
-    if (leds & (1 << i) != 0) {
+    if ((leds & (1 << i)) != 0) {
       color |= TM1638_COLOR_RED;
     }
 
-    if (leds & (1 << (i + 8)) != 0) {
+    if ((leds & (1 << (i + 8))) != 0) {
       color |= TM1638_COLOR_GREEN;
     }
 

TM16XX.cpp

@@ -165,3 +165,9 @@ byte TM16XX::receive()
 
   return temp;
 }
+
+#if !defined(ARDUINO) || ARDUINO < 100
+// empty implementation instead of pure virtual for older Arduino IDE
+void TM16XX::sendChar(byte pos, byte data, boolean dot) {}
+#endif
+

TM16XX.h

@@ -59,7 +59,13 @@ class TM16XX
 		const byte font[] = FONT_DEFAULT);
 
   protected:
-	virtual void sendChar(byte pos, byte data, boolean dot) = 0;
+	#if defined(ARDUINO) && ARDUINO >= 100
+		// pure virtual is NOT supported in older Arduino IDE
+		virtual void sendChar(byte pos, byte data, boolean dot) = 0;
+	#else
+		virtual void sendChar(byte pos, byte data, boolean dot);
+	#endif
+	
 	
     virtual void sendCommand(byte led);
     virtual void sendData(byte add, byte data);