Diff: lcd.cpp

Revision:

0:5dbeda619328

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lcd.cpp	Fri Nov 13 02:03:19 2015 +0000
@@ -0,0 +1,49 @@
+// LCD.cpp File
+#include "lcd.h"// Define mbed objects 
+
+
+ DigitalOut RS(p26) ;
+ DigitalOut E(p25) ;
+ BusOut data(p24, p23, p22, p21) ;
+ 
+ // Toggle enable function
+  void toggle_enable(void)
+   { E = 1 ; 
+   wait(0.001) ;
+    E = 0 ; 
+    wait(0.001) ; 
+    }// Initialise LCD function 
+    void LCD_init(void) 
+    { wait(0.02) ; 
+      RS = 0 ; E = 0 ;
+      
+      // Function mode 
+      data = 0x2 ; 
+      toggle_enable( ) ; 
+      data = 0x8 ; 
+      toggle_enable( ) ;
+      
+      // Display mode 
+      data = 0x0 ; 
+      toggle_enable( ) ; 
+      data = 0xF ; 
+      toggle_enable( ) ;
+      
+      // Clear display 
+      data = 0x0 ; 
+      toggle_enable( ) ; 
+      data = 0x1 ; 
+      toggle_enable( ) ;
+      
+      }
+      
+      // Display function 
+      void display_to_LCD(char value ) 
+      {
+          RS = 1;// display character 
+      data = value >> 4 ; // Upper 4 
+      toggle_enable( ) ; 
+      data = value & 0x0F ; // Lower 4 
+      toggle_enable( ) ; 
+      
+      }
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