Grove_LCD_RGB_Backlight.h

00001 #include "mbed.h"
00002 
00003 // I2C addresses for LCD and RGB
00004 #define LCD_ADDRESS     (0x7c)
00005 #define RGB_ADDRESS     (0xc4)
00006 
00007 #define RED_REG         0x04        
00008 #define GREEN_REG       0x03        
00009 #define BLUE_REG        0x02        
00010 
00011 // commands
00012 #define LCD_CLEARDISPLAY 0x01
00013 #define LCD_DISPLAYCONTROL 0x08
00014 #define LCD_FUNCTIONSET 0x20
00015 
00016 // flags for display on/off control
00017 #define LCD_DISPLAYON 0x04
00018 #define LCD_DISPLAYOFF 0x00
00019 
00020 // flag for entry mode
00021 #define LCD_ENTRYLEFT 0x02
00022 
00023 // flags for function set
00024 #define LCD_8BITMODE 0x10
00025 #define LCD_2LINE 0x08
00026 #define LCD_5x10DOTS 0x04
00027 
00028     
00029 class Grove_LCD_RGB_Backlight
00030 {
00031 
00032 public:
00033     
00034     //Contructor
00035     Grove_LCD_RGB_Backlight(PinName sda, PinName scl); 
00036     
00037 
00038     
00039     //Set RGB Color of backglight
00040     void setRGB(char r, char g, char b);     
00041     
00042     //Initialize device
00043     void init();   
00044     
00045     //Turn on display
00046     void displayOn();
00047     
00048     //Clear all text from display
00049     void clear();
00050     
00051     //Print text to the lcd screen
00052     void print(char *str);
00053     
00054     //Move cursor to specified location
00055     void locate(char col, char row);
00056 
00057     
00058 private:
00059     
00060     //Send command to display
00061     void sendCommand(char value);
00062     
00063     //Set register value
00064     void setReg(char addr, char val); 
00065     
00066     //MBED I2C object used to transfer data to LCD
00067     I2C i2c;              
00068     
00069 };