Version 1.5.1

CHANGES.txt

@@ -0,0 +1,40 @@
+Version 1.5.1
+
+- ISSUE #7: New character data in default font for '*';
+- Minor optimization on inverted TM1638.
+
+Version 1.5.0
+
+- support for inverted module;
+- support for Arduino IDE 1.0;
+- some restructuring.
+
+Version 1.4.0
+
+- ISSUE #6: Support for specifying dots on setDisplayToString
+  WARNING: setDisplayToString methods have changed prototype and are incompatible with code compiled for 1.3.x (if you specified a custom font)
+
+Version 1.3.2
+
+- ISSUE #5: Correction of string library import.
+
+Version 1.3.1
+
+- changed pins on the examples to match schematics on project site.
+
+Version 1.3.0
+
+- added support for String Object;
+- added support for removing leading zeros in displaying numbers.
+
+Version 1.2.0
+
+- added support for writing text.
+
+Version 1.1.0
+
+- restructuring and added 2 proper examples, available in the arduino ide.
+
+Version 1.0.0
+
+- initial release.

InvertedTM1638.cpp

@@ -0,0 +1,57 @@
+/*
+InvertedTM1638.cpp - Library implementation for inverted TM1638.
+
+Copyright (C) 2011 Ricardo Batista (rjbatista <at> gmail <dot> com)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the version 3 GNU General Public License as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if defined(ARDUINO) && ARDUINO >= 100
+	#include "Arduino.h"
+#else
+	#include "WProgram.h"
+#endif
+
+#include "InvertedTM1638.h"
+
+InvertedTM1638::InvertedTM1638(byte dataPin, byte clockPin, byte strobePin, boolean activateDisplay,
+	byte intensity) : TM1638(dataPin, clockPin, strobePin, activateDisplay, intensity)
+{
+	// nothing to do
+}
+
+void InvertedTM1638::setLED(byte color, byte pos)
+{
+    sendData(((7 - pos) << 1) + 1, color);
+}
+
+byte InvertedTM1638::getButtons()
+{
+	byte buttons = TM1638::getButtons();
+
+	// swap each other
+	buttons = (buttons & 0b01010101) <<  1 | (buttons & 0b10101010) >>  1;
+
+	// swap each pair 
+	buttons = (buttons & 0b00110011) <<  2 | (buttons & 0b11001100) >>  2;
+ 
+	// swap each quad
+	buttons = (buttons & 0b00001111) <<  4 | (buttons & 0b11110000) >>  4;
+
+	return buttons;
+}
+
+void InvertedTM1638::sendChar(byte pos, byte data, boolean dot)
+{
+	TM1638::sendChar(7 - pos, data & 0xC0 | (data & 0x07) << 3 | (data & 0x38) >> 3, dot);
+}

InvertedTM1638.h

@@ -0,0 +1,45 @@
+/*
+InvertedTM1638.h - Library for an inverted TM1638.
+
+Copyright (C) 2011 Ricardo Batista <rjbatista at gmail dot com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the version 3 GNU General Public License as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef InvertedTM1638_h
+#define InvertedTM1638_h
+
+#if defined(ARDUINO) && ARDUINO >= 100
+	#include "Arduino.h"
+#else
+	#include "WProgram.h"
+#endif
+
+#include "TM1638.h"
+
+class InvertedTM1638 : public TM1638
+{
+  public:
+    /** Instantiate an inverted tm1638 module specifying the display state, the starting intensity (0-7) data, clock and stobe pins. */
+    InvertedTM1638(byte dataPin, byte clockPin, byte strobePin, boolean activateDisplay = true, byte intensity = 7);
+
+    /** Set the LED at pos to color (TM1638_COLOR_RED, TM1638_COLOR_GREEN or both) */
+    virtual void setLED(byte color, byte pos);
+    /** Returns the pressed buttons as a bit set (left to right). */
+    virtual byte getButtons();
+
+  protected:
+    virtual void sendChar(byte pos, byte data, boolean dot);
+};
+
+#endif

README.txt

@@ -10,7 +10,9 @@ Includes:
 - Helper methods for displaying numbers in decimal, hexadecimal and binary;
 - Support for multiple chained tm1638;
 - Reading simultaneous button presses;
-- Support for dimming the display and LEDs.
+- Support for dimming the display and LEDs;
+- Support for writing text;
+- Support for module in inverted position.
 
 See: TM1638 Display/LED module at http://www.dealextreme.com/p/81873?r=68099021
 

TM1638.cpp

@@ -1,10 +1,8 @@
 /*
-TM1638.h - Library for TM1638.
+TM1638.cpp - Library implementation for TM1638.
 
 Copyright (C) 2011 Ricardo Batista (rjbatista <at> gmail <dot> com)
 
-Based on a sketch by: Martin Hubacek (http://www.martinhubacek.cz)
-
 This program is free software: you can redistribute it and/or modify
 it under the terms of the version 3 GNU General Public License as
 published by the Free Software Foundation.
@@ -18,48 +16,14 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include "WProgram.h"
+#if defined(ARDUINO) && ARDUINO >= 100
+	#include "Arduino.h"
+#else
+	#include "WProgram.h"
+#endif
+
 #include "TM1638.h"
-
+#include "string.h"
-/*
-The bits are displayed by mapping bellow
- -- 0 --
-|       |
-5       1
- -- 6 --
-4       2
-|       |
- -- 3 --  .7
-*/
-const byte NUMBER_DATA[] = {
-  0b00111111, // 0
-  0b00000110, // 1
-  0b01011011, // 2
-  0b01001111, // 3
-  0b01100110, // 4
-  0b01101101, // 5
-  0b01111101, // 6
-  0b00000111, // 7
-  0b01111111, // 8
-  0b01101111, // 9
-  0b01110111, // A
-  0b01111100, // B
-  0b00111001, // C
-  0b01011110, // D
-  0b01111001, // E
-  0b01110001  // F
-};
-
-const byte ERROR[] = {
-  0b01111001, // E
-  0b01010000, // r
-  0b01010000, // r
-  0b01011100, // o
-  0b01010000, // r
-  0,
-  0,
-  0
-};
 
 TM1638::TM1638(byte dataPin, byte clockPin, byte strobePin, boolean activateDisplay, byte intensity)
 {
@@ -85,52 +49,103 @@ 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));
 }
 
-
+void TM1638::setDisplayToHexNumber(unsigned long number, byte dots, boolean leadingZeros,
-void TM1638::setDisplayToHexNumber(unsigned long number, byte dots)
+	const byte numberFont[])
 {
   for (int i = 0; i < 8; i++) {
-    setDisplayDigit(number & 0xF, 7 - i, (dots & (1 << i)) != 0);
+	if (!leadingZeros && number == 0) {
-    number >>= 4;
+		clearDisplayDigit(7 - i, (dots & (1 << i)) != 0);
+	} else {
+		setDisplayDigit(number & 0xF, 7 - i, (dots & (1 << i)) != 0, numberFont);
+		number >>= 4;
+    }
   }
 }
 
-void TM1638::setDisplayToDecNumber(unsigned long number, byte dots)
+void TM1638::setDisplayToDecNumber(unsigned long number, byte dots, boolean leadingZeros,
+	const byte numberFont[])
 {
   if (number > 99999999L) {
-    setDisplay(ERROR);
+    setDisplayToError();
   } else {
     for (int i = 0; i < 8; i++) {
       if (number != 0) {
-        setDisplayDigit(number % 10, 7 - i, (dots & (1 << i)) != 0);
+        setDisplayDigit(number % 10, 7 - i, (dots & (1 << i)) != 0, numberFont);
         number /= 10;
       } else {
-        setDisplayDigit(0, 7 - i, (dots & (1 << i)) != 0);
+		  if (leadingZeros) {
+		  setDisplayDigit(0, 7 - i, (dots & (1 << i)) != 0, numberFont);
+		} else {
+		  clearDisplayDigit(7 - i, (dots & (1 << i)) != 0);
+		}
       }
     }
   }
 }
 
-void TM1638::setDisplayToBinNumber(byte number, byte dots)
+void TM1638::setDisplayToBinNumber(byte number, byte dots, const byte numberFont[])
 {
   for (int i = 0; i < 8; i++) {
-    setDisplayDigit((number & (1 << i)) == 0 ? 0 : 1, 7 - i, (dots & (1 << i)) != 0);
+    setDisplayDigit((number & (1 << i)) == 0 ? 0 : 1, 7 - i, (dots & (1 << i)) != 0, numberFont);
   }
 }
 
-void TM1638::setDisplayDigit(byte digit, byte pos, boolean dot)
+void TM1638::setDisplayDigit(byte digit, byte pos, boolean dot, const byte numberFont[])
 {
-  sendData(pos << 1, NUMBER_DATA[digit & 0xF] | (dot ? 0b10000000 : 0));
+  sendChar(pos, numberFont[digit & 0xF], dot);
+}
+
+void TM1638::setDisplayToError()
+{
+    setDisplay(ERROR_DATA);
+}
+
+void TM1638::clearDisplayDigit(byte pos, boolean dot)
+{
+  sendChar(pos, 0, dot);
 }
 
 void TM1638::setDisplay(const byte values[])
 {
   for (int i = 0; i < 8; i++) {
-    sendData(i << 1, values[i]);
+    sendChar(i, values[i], 0);
+  }
+}
+
+void TM1638::clearDisplay()
+{
+  for (int i = 0; i < 8; i++) {
+    sendData(i << 1, 0);
+  }
+}
+
+void TM1638::setDisplayToString(const char* string, const byte dots, const byte font[])
+{
+  for (int i = 0; i < 8; i++) {
+    sendChar(i, font[string[i] - 32], dots & (1 << (7 - i)));
+  }
+}
+
+void TM1638::setDisplayToString(const String string, const byte dots, const byte font[])
+{
+  int stringLength = string.length();
+
+  for (int i = 0; i < 8; i++) {
+    if (i < stringLength) {
+      sendChar(i, font[string.charAt(i) - 32], dots & (1 << (7 - i)));
+    } else {
+      sendChar(i, 0, dots & (1 << (7 - i)));
+    }
   }
 }
 
@@ -142,17 +157,17 @@ void TM1638::setLED(byte color, byte pos)
 void TM1638::setLEDs(word leds)
 {
   for (int i = 0; i < 8; i++) {
-    byte val = 0;
+    byte color = 0;
 
     if (leds & (1 << i)) {
-      val |= 1;
+      color |= TM1638_COLOR_RED;
     }
 
     if (leds & (1 << (i + 8))) {
-      val |= 2;
+      color |= TM1638_COLOR_GREEN;
     }
 
-    sendData((i << 1) + 1, val);
+    setLED(color, i);
   }
 }
 
@@ -170,6 +185,11 @@ byte TM1638::getButtons(void)
   return keys;
 }
 
+void TM1638::sendChar(byte pos, byte data, boolean dot)
+{
+	sendData(pos << 1, data | (dot ? 0b10000000 : 0));
+}
+
 void TM1638::sendCommand(byte cmd)
 {
   digitalWrite(strobePin, LOW);
@@ -222,4 +242,3 @@ byte TM1638::receive()
 
   return temp;
 }
-

TM1638.h

@@ -3,8 +3,6 @@ TM1638.h - Library for TM1638.
 
 Copyright (C) 2011 Ricardo Batista <rjbatista at gmail dot com>
 
-Based on a sketch by: Martin Hubacek (http://www.martinhubacek.cz)
-
 This program is free software: you can redistribute it and/or modify
 it under the terms of the version 3 GNU General Public License as
 published by the Free Software Foundation.
@@ -21,7 +19,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef TM1638_h
 #define TM1638_h
 
-#include <WProgram.h>
+#if defined(ARDUINO) && ARDUINO >= 100
+	#include "Arduino.h"
+#else
+	#include "WProgram.h"
+#endif
+
+#include "TM1638Fonts.h"
 
 #define TM1638_COLOR_RED    1
 #define TM1638_COLOR_GREEN  2
@@ -31,30 +35,47 @@ 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);
 
-    /** Set the display to a unsigned hexadecimal number */
+    /** Set the display to a unsigned hexadecimal number (with or without leading zeros) */
-    void setDisplayToHexNumber(unsigned long number, byte dots);
+    void setDisplayToHexNumber(unsigned long number, byte dots, boolean leadingZeros = true,
-    /** Set the display to a unsigned decimal number */
+		const byte numberFont[] = NUMBER_FONT);
-    void setDisplayToDecNumber(unsigned long number, byte dots);
+    /** Set the display to a unsigned decimal number (with or without leading zeros) */
+    void setDisplayToDecNumber(unsigned long number, byte dots, boolean leadingZeros = true,
+		const byte numberFont[] = NUMBER_FONT);
     /** Set the display to a unsigned binary number */
-    void setDisplayToBinNumber(byte number, byte dots);
+    void setDisplayToBinNumber(byte number, byte dots,
+		const byte numberFont[] = NUMBER_FONT);
     /** Set a single display at pos (starting at 0) to a digit (left to right) */ 
-    void setDisplayDigit(byte digit, byte pos, boolean dot);
+    void setDisplayDigit(byte digit, byte pos, boolean dot,
+		const byte numberFont[] = NUMBER_FONT);
+	/** Set the display to an error message */
+	void setDisplayToError();
+	/** Clear  a single display at pos (starting at 0, left to right) */ 
+    void clearDisplayDigit(byte pos, boolean dot);
     /** Set the display to the 8 values (left to right) */
     void setDisplay(const byte values[]);
+    /** 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);
+    /** Set the display to the String (defaults to built in font) */
+	void setDisplayToString(String string, const byte dots = 0, const byte font[] = FONT_DEFAULT);
 
     /** Set the LED at pos to color (TM1638_COLOR_RED, TM1638_COLOR_GREEN or both) */
-    void setLED(byte color, byte pos);
+    virtual void setLED(byte color, byte pos);
     /** Set the LEDs. MSB byte for the green LEDs, LSB for the red LEDs */
     void setLEDs(word led);
 
     /** Returns the pressed buttons as a bit set (left to right). */
-    byte getButtons();
+    virtual byte getButtons();
 
   protected:
+	virtual void sendChar(byte pos, byte data, boolean dot);
+
     void sendCommand(byte led);
     void sendData(byte add, byte data);
     void send(byte data);
@@ -67,4 +88,3 @@ class TM1638
 };
 
 #endif
-

TM1638Fonts.h

@@ -0,0 +1,164 @@
+/*
+TM1638Fonts.h - Font definition for TM1638.
+
+Copyright (C) 2011 Ricardo Batista (rjbatista <at> gmail <dot> com)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the version 3 GNU General Public License as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+The bits are displayed by mapping bellow
+ -- 0 --
+|       |
+5       1
+ -- 6 --
+4       2
+|       |
+ -- 3 --  .7
+
+*/
+
+#ifndef TM1638Fonts_h
+#define TM1638Fonts_h
+
+// definition for standard hexadecimal numbers
+const byte NUMBER_FONT[] = {
+  0b00111111, // 0
+  0b00000110, // 1
+  0b01011011, // 2
+  0b01001111, // 3
+  0b01100110, // 4
+  0b01101101, // 5
+  0b01111101, // 6
+  0b00000111, // 7
+  0b01111111, // 8
+  0b01101111, // 9
+  0b01110111, // A
+  0b01111100, // B
+  0b00111001, // C
+  0b01011110, // D
+  0b01111001, // E
+  0b01110001  // F
+};
+
+// definition for error
+const byte ERROR_DATA[] = {
+  0b01111001, // E
+  0b01010000, // r
+  0b01010000, // r
+  0b01011100, // o
+  0b01010000, // r
+  0,
+  0,
+  0
+};
+
+// definition for the displayable ASCII chars
+const byte FONT_DEFAULT[] = {
+  0b00000000, // (32)  <space>
+  0b10000110, // (33)	!
+  0b00100010, // (34)	"
+  0b01111110, // (35)	#
+  0b01101101, // (36)	$
+  0b00000000, // (37)	%
+  0b00000000, // (38)	&
+  0b00000010, // (39)	'
+  0b00110000, // (40)	(
+  0b00000110, // (41)	)
+  0b01100011, // (42)	*
+  0b00000000, // (43)	+
+  0b00000100, // (44)	,
+  0b01000000, // (45)	-
+  0b10000000, // (46)	.
+  0b01010010, // (47)	/
+  0b00111111, // (48)	0
+  0b00000110, // (49)	1
+  0b01011011, // (50)	2
+  0b01001111, // (51)	3
+  0b01100110, // (52)	4
+  0b01101101, // (53)	5
+  0b01111101, // (54)	6
+  0b00100111, // (55)	7
+  0b01111111, // (56)	8
+  0b01101111, // (57)	9
+  0b00000000, // (58)	:
+  0b00000000, // (59)	;
+  0b00000000, // (60)	<
+  0b01001000, // (61)	=
+  0b00000000, // (62)	>
+  0b01010011, // (63)	?
+  0b01011111, // (64)	@
+  0b01110111, // (65)	A
+  0b01111111, // (66)	B
+  0b00111001, // (67)	C
+  0b00111111, // (68)	D
+  0b01111001, // (69)	E
+  0b01110001, // (70)	F
+  0b00111101, // (71)	G
+  0b01110110, // (72)	H
+  0b00000110, // (73)	I
+  0b00011111, // (74)	J
+  0b01101001, // (75)	K
+  0b00111000, // (76)	L
+  0b00010101, // (77)	M
+  0b00110111, // (78)	N
+  0b00111111, // (79)	O
+  0b01110011, // (80)	P
+  0b01100111, // (81)	Q
+  0b00110001, // (82)	R
+  0b01101101, // (83)	S
+  0b01111000, // (84)	T
+  0b00111110, // (85)	U
+  0b00101010, // (86)	V
+  0b00011101, // (87)	W
+  0b01110110, // (88)	X
+  0b01101110, // (89)	Y
+  0b01011011, // (90)	Z
+  0b00111001, // (91)	[
+  0b01100100, // (92)	\ (this can't be the last char on a line, even in comment or it'll concat)
+  0b00001111, // (93)	]
+  0b00000000, // (94)	^
+  0b00001000, // (95)	_
+  0b00100000, // (96)	`
+  0b01011111, // (97)	a
+  0b01111100, // (98)	b
+  0b01011000, // (99)	c
+  0b01011110, // (100)	d
+  0b01111011, // (101)	e
+  0b00110001, // (102)	f
+  0b01101111, // (103)	g
+  0b01110100, // (104)	h
+  0b00000100, // (105)	i
+  0b00001110, // (106)	j
+  0b01110101, // (107)	k
+  0b00110000, // (108)	l
+  0b01010101, // (109)	m
+  0b01010100, // (110)	n
+  0b01011100, // (111)	o
+  0b01110011, // (112)	p
+  0b01100111, // (113)	q
+  0b01010000, // (114)	r
+  0b01101101, // (115)	s
+  0b01111000, // (116)	t
+  0b00011100, // (117)	u
+  0b00101010, // (118)	v
+  0b00011101, // (119)	w
+  0b01110110, // (120)	x
+  0b01101110, // (121)	y
+  0b01000111, // (122)	z
+  0b01000110, // (123)	{
+  0b00000110, // (124)	|
+  0b01110000, // (125)	}
+  0b00000001, // (126)	~
+};
+
+#endif

examples/tm1638_functions_example/tm1638_functions_example.pde

@@ -0,0 +1,102 @@
+/*
+Library examples for TM1638.
+
+Copyright (C) 2011 Ricardo Batista <rjbatista at gmail dot com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the version 3 GNU General Public License as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <TM1638.h>
+#include <InvertedTM1638.h>
+
+#define NO_MODULES  2
+
+// define a regular module and a inverted module
+TM1638 module1(3, 2, 4);
+InvertedTM1638 module2(3, 2, 5);
+TM1638* modules[NO_MODULES] = {
+  &module1,
+  &module2
+};
+byte modes[NO_MODULES];
+
+unsigned long startTime;
+
+void setup() {
+  startTime = millis();
+  
+  for (int i = 0; i < NO_MODULES; i++) {
+    modules[i]->setupDisplay(true, 7);
+    modes[i] = 0;
+  }
+}
+
+void update(TM1638* module, byte* mode) {
+  byte buttons = module->getButtons();
+  unsigned long runningSecs = (millis() - startTime) / 1000;
+  
+  // button pressed - change mode
+  if (buttons != 0) {
+    *mode = buttons >> 1;
+    module->clearDisplay();
+    module->setLEDs(0);
+  }
+
+  switch (*mode) {
+    case 0:
+      module->setDisplayToDecNumber(runningSecs, 1 << 7);
+      break;
+    case 1:
+      module->setDisplayToDecNumber(runningSecs, 1 << 6, false);
+      break;
+    case 2:
+      module->setDisplayToHexNumber(runningSecs, 1 << 5);
+      break;
+    case 4:
+      module->setDisplayToHexNumber(runningSecs, 1 << 4, false);
+      break;
+    case 8:
+      module->setDisplayToBinNumber(runningSecs, 1 << 3);
+      break;
+    case 16:
+      module->clearDisplayDigit((runningSecs - 1) % 8, 0);
+      module->setDisplayDigit(runningSecs % 8, runningSecs % 8, 0);
+      break;
+    case 32:
+      char s[8];
+      sprintf(s, "Secs %03d", runningSecs % 999);
+      module->setDisplayToString(s);
+      break;
+    case 64:
+      if (runningSecs % 2 == 0) {
+        module->setDisplayToString("TM1638  ");
+      } else {
+        module->setDisplayToString("LIBRARY ");
+      }
+
+      module->setLED(0, (runningSecs - 1) % 8);
+      module->setLED(1 + runningSecs % 3, runningSecs % 8);
+      break;
+    case 65:
+      module->setDisplayToError();
+      break;
+
+  }
+}
+
+void loop() {
+  for (int i = 0; i < NO_MODULES; i++) {
+    update(modules[i], &modes[i]);
+  }
+}
+

examples/tm1638_one_module_example/tm1638_one_module_example.pde

@@ -18,8 +18,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <TM1638.h>
 
-// define a module on data pin 3, clock pin 2 and strobe pin 4
+// define a module on data pin 8, clock pin 9 and strobe pin 7
-TM1638 module(3, 2, 4);
+TM1638 module(8, 9, 7);
 
 void setup() {
   // display a hexadecimal number and set the left 4 dots

examples/tm1638_scrolling_modules_example/tm1638_scrolling_modules_example.pde

@@ -0,0 +1,56 @@
+/*
+TM1638.h - Library for TM1638.
+
+Copyright (C) 2011 Ricardo Batista <rjbatista at gmail dot com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the version 3 GNU General Public License as
+published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <TM1638.h>
+
+#define MODULES 4
+
+// define a modules
+TM1638 modules[] = {
+	TM1638(8, 9, 7),
+	TM1638(8, 9, 6),
+	TM1638(8, 9, 5),
+	TM1638(8, 9, 4)
+};
+
+void setup() {
+}
+
+const char string[] = "       SEE LIBRARY PROJECT AT CODE.GOOGLE.COM        ";
+int base = 0;
+
+void loop() {
+  for (int i = 0; i < MODULES; i++) {
+    const char* pos = string + base + (i * 8);
+
+    if (pos >= string && pos + 8 < string + sizeof(string)) {
+      modules[i].setDisplayToString(pos);
+    } else {
+      modules[i].clearDisplay();
+    }
+  }
+
+  base++;
+
+  if (base == sizeof(string) - 8) {
+    base = -MODULES * 8;
+  }
+
+  delay(100);
+}
+

examples/tm1638_two_modules_example/tm1638_two_modules_example.pde

@@ -24,9 +24,9 @@ const byte hello[] = {
 };
 
 // define the first module
-TM1638 module1(3, 2, 4);
+TM1638 module1(8, 9, 7);
 // to chain modules, use the same clk and data - just specify a different strobe pin
-TM1638 module2(3, 2, 5);
+TM1638 module2(8, 9, 6);
 
 unsigned long value = 0L;
 boolean state = true;

keywords.txt

@@ -7,6 +7,7 @@
 #######################################
 
 TM1638	KEYWORD1
+InvertedTM1638	KEYWORD1
 
 #######################################
 # Methods and Functions (KEYWORD2)
@@ -18,11 +19,14 @@ setDisplayToDecNumber	KEYWORD2
 setDisplayToBinNumber	KEYWORD2
 setDisplayDigit	KEYWORD2
 setDisplay	KEYWORD2
+clearDisplay	KEYWORD2
+setDisplayToString	KEYWORD2
 setLED	KEYWORD2
 setLEDs	KEYWORD2
 getButtons	KEYWORD2
 sendCommand	KEYWORD2
 sendData	KEYWORD2
+sendChar	KEYWORD2
 send	KEYWORD2
 receive	KEYWORD2