Diff: SerialLCD.h

Revision:

0:0f36b9fac4c5

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SerialLCD.h	Mon Jul 11 15:02:04 2011 +0000
@@ -0,0 +1,64 @@
+#pragma once
+
+//! class that implements an interface like TextLCD, for a serial LCD :)
+class SerialLCD : public Serial
+{
+public:
+    //! Constructor
+    SerialLCD(PinName tx, PinName rx)
+        : Serial(tx, rx) 
+    {
+        baud(9600);
+    }
+    
+    //! Enum with command codes.
+    struct Codes
+    {
+        enum Enum
+        {
+            BackLight   = 0x7C,
+            Command     = 0xFE,
+            Clear       = 0x01,
+            DisplayOn   = 0x0C,
+            DisplayOff  = 0x08,
+            UnderlineCursorOn  = 0x0E,
+            UnderlineCursorOff = 0x0C,
+            BlinkingCursorOn   = 0x0D,
+            BlinkingCursorOff  = 0x0C,
+            CursorLeft  = 0x10,
+            CursorRight = 0x14,
+            ScrollLeft  = 0x18,
+            ScrollRight = 0x1C,
+            
+            Position    = 0x80,
+            
+        };
+    };
+
+    /** Locate to a screen column and row
+    *
+    * @param column  The horizontal position from the left, indexed from 0
+    * @param row     The vertical position from the top, indexed from 0
+    */
+    void locate(int column, int row)
+    {
+        unsigned char const code = Codes::Position | ((row & 0x1) << 6) | (column % 0x3F);
+        
+        send_command(code);
+    }
+ 
+    /** Clear the screen and locate to 0,0 */
+    void cls()
+    {
+        send_command(Codes::Clear);
+        
+        locate(0,0);
+    }
+    
+    //!Send a command
+    void send_command(int const command_code)
+    {
+        putc(Codes::Command);
+        putc(command_code);
+    }
+};