First Commit

lib/MAX7219/examples/Scrolling/Scrolling.ino

@@ -0,0 +1,54 @@
+#include <SPI.h>
+#include <bitBangedSPI.h>
+#include <MAX7219.h>
+
+const byte chips = 1;
+
+// 1 chip, bit banged SPI on pins 6, 7, 8
+MAX7219 display (chips, 6, 7, 8);  // Chips / LOAD / DIN / CLK
+
+const char message [] = "Hello there - testing 123456789 ";
+
+void setup ()
+  {
+  display.begin ();
+  }  // end of setup
+
+unsigned long lastMoved = 0;
+unsigned long MOVE_INTERVAL = 500;  // mS
+unsigned int  messageOffset;
+
+void updateDisplay ()
+  {
+  const unsigned int messageLength = strlen (message);
+  
+  // get each byte required
+  for (byte i = 0; i < (8 * chips); i++)
+    {
+    // find the offset in the message array
+    unsigned int charOffset = messageOffset + i;
+    // if we have passed the end, go back to the start
+    if (charOffset >= messageLength)
+       charOffset -=  messageLength;
+    // send that character
+    display.sendChar (i, message [charOffset]);
+    }
+  // next time show one character on
+  if (messageOffset++ >= messageLength)
+    messageOffset = 0;
+  }  // end of updateDisplay
+
+void loop () 
+  { 
+    
+  // update display if time is up
+  if (millis () - lastMoved >= MOVE_INTERVAL)
+    {
+    updateDisplay ();
+    lastMoved = millis ();
+    }
+
+  // do other stuff here    
+     
+  }  // end of loop
+