Version 1.6.0

CHANGES.txt

@@ -1,3 +1,12 @@
+Version 1.6.0
+
+- ISSUE #10: Support for starting position on setDisplayToString() methods.
+  WARNING: setDisplayToString methods have changed prototype and are incompatible with code compiled for 1.5.x (if you specified a custom font)
+
+Version 1.5.2
+
+- ISSUE #9: Backwards compatibility with previous Arduino IDE.
+
 Version 1.5.1
 
 - ISSUE #7: New character data in default font for '*';

TM1638.cpp

@@ -49,11 +49,6 @@ TM1638::TM1638(byte dataPin, byte clockPin, byte strobePin, boolean activateDisp
   digitalWrite(strobePin, HIGH);
 }
 
-TM1638::~TM1638()
-{
-	// nothing to do
-}
-
 void TM1638::setupDisplay(boolean active, byte intensity)
 {
   sendCommand(0x80 | (active ? 8 : 0) | min(7, intensity));
@@ -129,22 +124,26 @@ void TM1638::clearDisplay()
   }
 }
 
-void TM1638::setDisplayToString(const char* string, const byte dots, const byte font[])
+void TM1638::setDisplayToString(const char* string, const byte dots, const byte pos, const byte font[])
 {
-  for (int i = 0; i < 8; i++) {
+  for (int i = 0; i < 8 - pos; i++) {
-    sendChar(i, font[string[i] - 32], dots & (1 << (7 - i)));
+  	if (string[i] != '\0') {
+	  sendChar(i + pos, font[string[i] - 32], dots & (1 << (7 - i)));
+	} else {
+	  break;
+	}
   }
 }
 
-void TM1638::setDisplayToString(const String string, const byte dots, const byte font[])
+void TM1638::setDisplayToString(const String string, const byte dots, const byte pos, const byte font[])
 {
   int stringLength = string.length();
 
-  for (int i = 0; i < 8; i++) {
+  for (int i = 0; i < 8 - pos; i++) {
     if (i < stringLength) {
-      sendChar(i, font[string.charAt(i) - 32], dots & (1 << (7 - i)));
+      sendChar(i + pos, font[string.charAt(i) - 32], dots & (1 << (7 - i)));
     } else {
-      sendChar(i, 0, dots & (1 << (7 - i)));
+      break;
     }
   }
 }

TM1638.h

@@ -35,7 +35,6 @@ class TM1638
   public:
     /** Instantiate a tm1638 module specifying the display state, the starting intensity (0-7) data, clock and stobe pins. */
     TM1638(byte dataPin, byte clockPin, byte strobePin, boolean activateDisplay = true, byte intensity = 7);
-	virtual ~TM1638();
 
     /** Set the display (segments and LEDs) active or off and intensity (range from 0-7). */
     void setupDisplay(boolean active, byte intensity);
@@ -61,9 +60,11 @@ class TM1638
     /** Clear the display */
 	void clearDisplay();
     /** Set the display to the string (defaults to built in font) */
-	void setDisplayToString(const char* string, const byte dots = 0, const byte font[] = FONT_DEFAULT);
+	void setDisplayToString(const char* string, const byte dots = 0, const byte pos = 0,
+		const byte font[] = FONT_DEFAULT);
     /** Set the display to the String (defaults to built in font) */
-	void setDisplayToString(String string, const byte dots = 0, const byte font[] = FONT_DEFAULT);
+	void setDisplayToString(String string, const byte dots = 0, const byte pos = 0,
+		const byte font[] = FONT_DEFAULT);
 
     /** Set the LED at pos to color (TM1638_COLOR_RED, TM1638_COLOR_GREEN or both) */
     virtual void setLED(byte color, byte pos);