Diff: PC2119_16X2_LCD.h

Revision:

0:581d2def0734

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PC2119_16X2_LCD.h	Fri May 13 13:25:10 2011 +0000
@@ -0,0 +1,50 @@
+#ifndef PCF2119_16X2_LCD_H
+#define PCF2119_16X2_LCD_H
+
+#include "mbed.h"
+
+
+#define ASCII_OFFSET 0x80
+
+// Define LCD parameters
+#define LCD_I2C_ADR          0x76  // address + W
+
+#define FUNCTION_SET 0x34 //Function_set - 2 lines x 16, 1:18 Multiplex drive mode, 8 bits, basic instr. set
+#define DISPLAY_CTL 0x0C // Cursor off / Blink off / Character blink off
+
+#define INSTRUCTION_CTRL_BYTE 0x00
+#define DATA_CTRL_BYTE 0x40
+
+#define VLCD_MULTIPLIER 0x90
+#define VLCD_CONTRAST 0xA8
+#define ENTRY_MODE 0x06 // DDRAM or CGRAM address increments by 1, cursor moves to the right / Display does not shift
+#define CURSOR_DISLPAY_SHIFT 0x04 // cursor moves to the right (no display shift)
+#define ICON_CTRL 0x08 // direct mode off / icon blink disabled / character mode full display
+
+#define CLEAR_DISPLAY 0x01
+
+#define BLANK_CHAR ' '
+
+class PC2119_16X2_LCD {
+public:
+    PC2119_16X2_LCD(PinName p_sda, PinName p_scl, PinName p_reset);
+    PC2119_16X2_LCD(I2C& p_i2c, PinName p_reset);
+    void Init();
+    void flip_display();
+    void unflip_display();
+    void clear_display();
+    void clear_line(char row);
+    void write_xy(char ddram_byte, char row, char column, bool raw = false);
+    void write(char *b);
+    void printf(const char * format, ... );
+protected:    
+
+private:
+    I2C _i2c;
+    DigitalOut _reset;
+    
+    char ascii_to_lcd(char ch);
+
+};
+
+#endif
\ No newline at end of file