I2CLCD.h

00001 /*
00002  * mbed library for I2C LCD
00003  * Copyright (c) 2011 Hiroshi Suga
00004  * Released under the MIT License: http://mbed.org/license/mit
00005  *
00006  * This product includes:
00007  * mbed TextLCD Library, for a 4-bit LCD based on HD44780
00008  * Copyright (c) 2007-2010, sford
00009  */
00010 
00011 /** @file I2CLCD.h
00012  * @brief I2C LCD library (mbed Phone Platform)
00013  */
00014  
00015 #ifndef I2CLCD_H
00016 #define I2CLCD_H
00017 
00018 #include "mbed.h"
00019 
00020 /**
00021  * @brief default I2C address
00022  */
00023 //#define I2CLCD_ADDR 0x7c
00024 
00025 #define I2CLCD_ADDR 0x78 //SO1602AWWB
00026 
00027 /**
00028  * @brief LCD type
00029  */
00030 enum I2CLCDType {
00031     LCD8x2,
00032     LCD16x1,
00033     LCD16x2,
00034     LCD16x2B,
00035     LCD16x4,
00036     LCD20x2,
00037     LCD20x4
00038 };
00039 
00040 /**
00041  * @brief LCD config
00042  */
00043 enum I2CLCDConfig {
00044     LCDCFG_ENABLE   = 0x20,
00045     LCDCFG_PWMCOUNT = 0x10,
00046     LCDCFG_LED      = 0x08,
00047     LCDCFG_3V       = 0x04,
00048     LCDCFG_ADDR     = 0x02,
00049     LCDCFG_INIT     = 0x01
00050 };
00051 
00052 /**
00053  * @brief I2CLCD class
00054  */
00055 class I2CLCD : public Stream {
00056 public:
00057     I2CLCD (PinName p_sda, PinName p_scl, int p_i2caddr = I2CLCD_ADDR, I2CLCDType p_type = LCD16x2, I2CLCDConfig p_config = LCDCFG_3V);
00058     I2CLCD (I2C& p_i2c, int p_i2caddr = I2CLCD_ADDR, I2CLCDType p_type = LCD16x2, I2CLCDConfig p_config = LCDCFG_3V);
00059 
00060     void locate (int, int);
00061     void cls ();
00062     void lcd_cfg (I2CLCDConfig);
00063 
00064 protected:
00065     virtual int _putc (int);
00066     virtual int _getc ();
00067 
00068     int address (int, int);
00069     int rows ();
00070     int cols ();
00071     void init (int, I2CLCDType, I2CLCDConfig);
00072     void lcd_out (char, char);
00073     char lcd_in (char);
00074 
00075     I2C i2c;
00076     int i2caddr;
00077     I2CLCDType type;
00078     int x, y;
00079 };
00080 
00081 #endif