Added "mostly all" characters and letters and a setString function

examples/LCDemo7Segment/LCDemo7Segment.ino

@@ -3,18 +3,28 @@
 
 /*
  Now we need a LedControl to work with.
- ***** These pin numbers will probably not work with your hardware *****
- pin 12 is connected to the DataIn 
- pin 11 is connected to the CLK 
- pin 10 is connected to LOAD 
+ ***** Check pin numbers will probably not work with your hardware *****
  We have only a single MAX72XX.
  */
-LedControl lc=LedControl(12,11,10,1);
+#define TRACE_ON
+
+#define LC_DATA_PIN 8
+#define LC_LOAD_PIN 7
+#define LC_CLK_PIN 6
+#define LC_MODULE_COUNT 1
+
+LedControl lc=LedControl(LC_DATA_PIN,LC_CLK_PIN,LC_LOAD_PIN,LC_MODULE_COUNT);
+bool rotate=false;
 
 /* we always wait a bit between updates of the display */
-unsigned long delaytime=250;
+unsigned long delaytime=500;
 
 void setup() {
+  #ifdef TRACE_ON 
+    char compile_signature[] = "--- START (Build: " __DATE__ " " __TIME__ ") ---";   
+    Serial.begin(9600);
+    Serial.println(compile_signature); 
+  #endif
   /*
    The MAX72XX is in power-saving mode on startup,
    we have to do a wakeup call
@@ -26,30 +36,67 @@ void setup() {
   lc.clearDisplay(0);
 }
 
+/* Loop over demonstration sequences. Comment unnecessary if u like*/
+void loop() { 
+
+  writeArduinoOn7Segment(); // expects 1 digit
+  scrollDigits(); // expects 4 digits
+  writeArduinoString(); // expects 8 digits
+  writeGoStringOnPositions(); // expects 8 digits
+  traverseCodepage(); // expects 8 digits
+  rotate=!rotate;
+  lc.setRotate180(0,rotate);
+}
+
 
 /*
  This method will display the characters for the
  word "Arduino" one after the other on digit 0. 
  */
+
 void writeArduinoOn7Segment() {
+  lc.clearDisplay(0);
   lc.setChar(0,0,'a',false);
   delay(delaytime);
-  lc.setRow(0,0,0x05);
+  lc.setChar(0,0,'r',false);
   delay(delaytime);
   lc.setChar(0,0,'d',false);
   delay(delaytime);
-  lc.setRow(0,0,0x1c);
+  lc.setChar(0,0,'u',false);
   delay(delaytime);
-  lc.setRow(0,0,B00010000);
+  lc.setChar(0,0,'i',false);
   delay(delaytime);
-  lc.setRow(0,0,0x15);
+  lc.setChar(0,0,'n',false);
   delay(delaytime);
-  lc.setRow(0,0,0x1D);
+  lc.setChar(0,0,'o',false);
   delay(delaytime);
   lc.clearDisplay(0);
   delay(delaytime);
 } 
 
+/*
+ This method will display the String 
+ "Arduino" on a 8 digit 7 Seg display 
+ */
+void writeArduinoString() {
+  lc.setString(0,7,"Arduino",0x02);
+  delay(delaytime*5);
+}
+
+/*
+ This method will display the String 
+ "Go" at different locations and demonstrate how the other digirs are preseved 
+ */
+
+void writeGoStringOnPositions() {
+  lc.setString(0,7,"________",0x55);
+  for(int i=1;i<8;i++)
+  {
+    lc.setString(0,i,"Go",0x80);
+    delay(delaytime);
+  }
+}
+
 /*
   This method will scroll all the hexa-decimal
  numbers and letters on the display. You will need at least
@@ -67,7 +114,27 @@ void scrollDigits() {
   delay(delaytime);
 }
 
-void loop() { 
-  writeArduinoOn7Segment();
-  scrollDigits();
+/*
+  This method will travers over the whole codepage in 4 byte steps
+  showing the characters on the rightside and the offset in decimal on the left
+  */
+
+void traverseCodepage()
+{
+  String offsetAsString;
+  lc.clearDisplay(0);
+  lc.setString(0,7,"Codepage",0);
+  delay(delaytime*2);
+  lc.clearDisplay(0);
+  for (int i=0;i<128;i+=4) {
+    offsetAsString=String(i);
+    lc.setString(0,4+offsetAsString.length(),offsetAsString,0);
+    lc.setChar(0,3,i,false);
+    lc.setChar(0,2,i+1,false);
+    lc.setChar(0,1,i+2,false);
+    lc.setChar(0,0,i+3,false);
+    delay(delaytime*4);
+  }
 }
+
+

keywords.txt

@@ -21,6 +21,7 @@ setRow		KEYWORD2
 setColumn	KEYWORD2
 setDigit	KEYWORD2
 setChar		KEYWORD2
+setString	KEYWORD2
 
 #######################################
 # Constants (LITERAL1)

src/LedControl.cpp

@@ -43,7 +43,7 @@
 #define OP_SHUTDOWN    12
 #define OP_DISPLAYTEST 15
 
-LedControl::LedControl(int dataPin, int clkPin, int csPin, int numDevices) {
+LedControl::LedControl(int dataPin, int clkPin, int csPin, int numDevices, byte rotate180Flags) {
     SPI_MOSI=dataPin;
     SPI_CLK=clkPin;
     SPI_CS=csPin;
@@ -57,6 +57,7 @@ LedControl::LedControl(int dataPin, int clkPin, int csPin, int numDevices) {
     SPI_MOSI=dataPin;
     for(int i=0;i<64;i++) 
         status[i]=0x00;
+	rotate180=rotate180Flags;
     for(int i=0;i<maxDevices;i++) {
         spiTransfer(i,OP_DISPLAYTEST,0);
         //scanlimit is set to max on startup
@@ -162,6 +163,10 @@ void LedControl::setDigit(int addr, int digit, byte value, boolean dp) {
         return;
     offset=addr*8;
     v=pgm_read_byte_near(charTable + value); 
+	if(bitRead(rotate180,addr)) {
+		digit=7-digit;
+		v=(B01110000&(v<<3))|(B00001110&(v>>3))|(B00000001&v); //Rotate pabcdefg -> pdefabcg
+	}
     if(dp)
         v|=B10000000;
     status[offset+digit]=v;
@@ -183,29 +188,58 @@ void LedControl::setChar(int addr, int digit, char value, boolean dp) {
         index=32;
     }
     v=pgm_read_byte_near(charTable + index); 
+	if(bitRead(rotate180,addr)) {
+		digit=7-digit;
+		v=(B01110000&(v<<3))|(B00001110&(v>>3))|(B00000001&v); //Rotate pabcdefg -> pdefabcg
+	}
     if(dp)
         v|=B10000000;
     status[offset+digit]=v;
     spiTransfer(addr, digit+1,v);
 }
 
+void LedControl::setString(int addr, int digit, String theString,uint8_t dotpattern)
+{
+
+	if(addr<0 || addr>=maxDevices)
+        return;
+    if(digit<0 || digit>7)
+        return;
+	for(int i=0;i<theString.length();i++) 
+	{
+		setChar(addr,digit,theString.charAt(i),(0x80&dotpattern)!=0);
+		dotpattern<<=1;
+		if(--digit<0) 
+		{
+			digit=7;
+			if(++addr>=maxDevices) return;
+		}
+	}
+}
+
 void LedControl::spiTransfer(int addr, volatile byte opcode, volatile byte data) {
-    //Create an array with the data to shift out
+
     int offset=addr*2;
-    int maxbytes=maxDevices*2;
+    int maxbytes=maxDevices*2; // two bytes (opcode+data) for every device
 
-    for(int i=0;i<maxbytes;i++)
-        spidata[i]=(byte)0;
-    //put our device data into the array
+	//Prepare array with the data to shift out 
+	memset(spidata,0,maxbytes);
+
+    //put our device data into the array (other devices get 0x0000)
     spidata[offset+1]=opcode;
     spidata[offset]=data;
+
     //enable the line 
     digitalWrite(SPI_CS,LOW);
-    //Now shift out the data 
+    //Now shift out the data (Backwards order necessary) 
     for(int i=maxbytes;i>0;i--)
         shiftOut(SPI_MOSI,SPI_CLK,MSBFIRST,spidata[i-1]);
     //latch the data onto the display
     digitalWrite(SPI_CS,HIGH);
 }    
 
+void LedControl::setRotate180(int addr, boolean isRotated) {
+	bitWrite(rotate180,addr,isRotated);
+};
+