Chandler Matz / Grove_LCD_RGB_Backlight

Code used to connect the Grove RGB LCD display to an mbed microcontroller.

Dependents:   Grove_LCD_RGB_Backlight_HelloWorld Test_BERTIN LASS_LoRa_mbed Affichage_MesureEnvironnement ... more

Grove_LCD_RGB_Backlight.h@0:253885b1f364, 2016-03-15 (annotated)

Committer:
cmatz3
Date:
Tue Mar 15 17:19:39 2016 +0000
Revision:
0:253885b1f364
Child:
1:40a3b6506c9f
Initial Commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
cmatz3 0:253885b1f364 1 #include "mbed.h"
cmatz3 0:253885b1f364 2
cmatz3 0:253885b1f364 3 // I2C addresses for LCD and RGB
cmatz3 0:253885b1f364 4 #define LCD_ADDRESS (0x7c)
cmatz3 0:253885b1f364 5 #define RGB_ADDRESS (0xc4)
cmatz3 0:253885b1f364 6
cmatz3 0:253885b1f364 7 #define RED_REG 0x04
cmatz3 0:253885b1f364 8 #define GREEN_REG 0x03
cmatz3 0:253885b1f364 9 #define BLUE_REG 0x02
cmatz3 0:253885b1f364 10
cmatz3 0:253885b1f364 11 // commands
cmatz3 0:253885b1f364 12 #define LCD_CLEARDISPLAY 0x01
cmatz3 0:253885b1f364 13 #define LCD_DISPLAYCONTROL 0x08
cmatz3 0:253885b1f364 14 #define LCD_FUNCTIONSET 0x20
cmatz3 0:253885b1f364 15
cmatz3 0:253885b1f364 16 // flags for display on/off control
cmatz3 0:253885b1f364 17 #define LCD_DISPLAYON 0x04
cmatz3 0:253885b1f364 18 #define LCD_DISPLAYOFF 0x00
cmatz3 0:253885b1f364 19
cmatz3 0:253885b1f364 20 // flag for entry mode
cmatz3 0:253885b1f364 21 #define LCD_ENTRYLEFT 0x02
cmatz3 0:253885b1f364 22
cmatz3 0:253885b1f364 23 // flags for function set
cmatz3 0:253885b1f364 24 #define LCD_8BITMODE 0x10
cmatz3 0:253885b1f364 25 #define LCD_2LINE 0x08
cmatz3 0:253885b1f364 26 #define LCD_5x10DOTS 0x04
cmatz3 0:253885b1f364 27
cmatz3 0:253885b1f364 28
cmatz3 0:253885b1f364 29 class Grove_LCD_RGB_Backlight
cmatz3 0:253885b1f364 30 {
cmatz3 0:253885b1f364 31 public:
cmatz3 0:253885b1f364 32
cmatz3 0:253885b1f364 33 //Contructor
cmatz3 0:253885b1f364 34 Grove_LCD_RGB_Backlight(PinName sda, PinName scl);
cmatz3 0:253885b1f364 35
cmatz3 0:253885b1f364 36
cmatz3 0:253885b1f364 37
cmatz3 0:253885b1f364 38 //Set RGB Color of backglight
cmatz3 0:253885b1f364 39 void setRGB(char r, char g, char b);
cmatz3 0:253885b1f364 40
cmatz3 0:253885b1f364 41 //Initialize device
cmatz3 0:253885b1f364 42 void init();
cmatz3 0:253885b1f364 43
cmatz3 0:253885b1f364 44 //Turn on display
cmatz3 0:253885b1f364 45 void displayOn();
cmatz3 0:253885b1f364 46
cmatz3 0:253885b1f364 47 //Clear all text from display
cmatz3 0:253885b1f364 48 void clear();
cmatz3 0:253885b1f364 49
cmatz3 0:253885b1f364 50 //Print text to the lcd screen
cmatz3 0:253885b1f364 51 void print(char *str);
cmatz3 0:253885b1f364 52
cmatz3 0:253885b1f364 53 //Move cursor to specified location
cmatz3 0:253885b1f364 54 void locate(char col, char row);
cmatz3 0:253885b1f364 55
cmatz3 0:253885b1f364 56
cmatz3 0:253885b1f364 57 private:
cmatz3 0:253885b1f364 58
cmatz3 0:253885b1f364 59 //Send command to display
cmatz3 0:253885b1f364 60 void sendCommand(char value);
cmatz3 0:253885b1f364 61
cmatz3 0:253885b1f364 62 //Set register value
cmatz3 0:253885b1f364 63 void setReg(char addr, char val);
cmatz3 0:253885b1f364 64
cmatz3 0:253885b1f364 65 //MBED I2C object used to transfer data to LCD
cmatz3 0:253885b1f364 66 I2C i2c;
cmatz3 0:253885b1f364 67
cmatz3 0:253885b1f364 68 };