3 files changed, 73 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index c2535d2..ce673e8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,9 +1,15 @@
+2009-03-27 Josh Kropf <josh@slashdev.ca>
+
+	* Lcd.h, Lcd.cpp
+	  (print): added method overrides for printing numbers
+
+
 2008-09-17 Josh Kropf <josh@slashdev.ca>
 
 	* Lcd.h: use protected member to store 4bit flag instead of line function
 	* Lcd.cpp: use flag to check if 4bit mode is enabled
 	  (check_bf): fixed bug resulting in wrong pin selected for BF check
-	  (check_bf); do second enable pin pulse in 4bit mode
+	  (check_bf): do second enable pin pulse in 4bit mode
 
 
 2008-09-14 Josh Kropf <josh@slashdev.ca>
diff --git a/Lcd.cpp b/Lcd.cpp
index 1ea20b8..e15e0f5 100644
--- a/Lcd.cpp
+++ b/Lcd.cpp
@@ -269,6 +269,40 @@ Lcd::print(char* s)
 }
 
 void
+Lcd::print(unsigned long n, uint8_t base)
+{
+   char buf[8 * sizeof(long)];
+   int i = 0;
+
+   if (n == 0) {
+      print('0');
+      return;
+   }
+
+   while (n > 0) {
+      buf[i++] = n % base;
+      n /= base;
+   }
+
+   for(; i > 0; i--) {
+      print((char) (buf[i - 1] < 10?
+               '0' + buf[i - 1] :
+               'A' + buf[i - 1] - 10));
+   }
+}
+
+void
+Lcd::print(long n, uint8_t base)
+{
+   if (n < 0) {
+      print('-');
+      n = -n;
+   }
+
+   print((unsigned long)n);
+}
+
+void
 Lcd::define_char(uint8_t index, uint8_t data[])
 {
    int h = _function & FUNCTION_5x11? 11 : 8;
diff --git a/Lcd.h b/Lcd.h
index d0a3892..a9e6fac 100644
--- a/Lcd.h
+++ b/Lcd.h
@@ -90,7 +90,7 @@
  * Default pin arrangement is (4pin mode uses D4~D7):
  * D0=4, D1=5... , D7=11
  *
- * Version: 0.3
+ * Version: 0.4
  */
 class Lcd {
 protected:
@@ -196,7 +196,37 @@ public:
     * current cursor position.
     */
    void print(char* str);
-   
+
+   /**
+    * Print a number to the LCD screen at the current cursor position.
+    * \param n unsigned long integer
+    * \param base number system, default is decimal (base ten)
+    */
+   void print(unsigned long n, uint8_t base = 10);
+
+   /**
+    * Print a number to the LCD screen at the current cursor position.
+    * \param n signed long integer
+    * \param base number system, default is decimal (base ten)
+    */
+   void print(long n, uint8_t base = 10);
+
+   /**
+    * Print a number to the LCD screen at the current cursor position.
+    * \param n unsigned integer
+    * \param base number system, default is decimal (base ten)
+    */
+   void print(unsigned int n, uint8_t base = 10)
+   { print((unsigned long)n, base); }
+
+   /**
+    * Print a number to the LCD screen at the current cursor position.
+    * \param n signed integer
+    * \param base number system, default is decimal (base ten)
+    */
+   void print(int n, uint8_t base = 10)
+   { print((long)n, base); }
+
    /**
     * Define character in CGRAM.  This defines a custom character.  When the
     * LCD is setup to use 5x8 font the user can specify up to eight characters.