Demo: SeeedStudio Grove LCD RGB Backlight

The LCD RGB Backlight provides a simple I2C-based character LCD with various backlight colors to rapidly display status for your project.

Example run restore

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
var b = require('bonescript');
var status = {};
function mydebug(x) {
    console.log(x);
}
exports = (function(){
    var exports = {};
    // based on https://github.com/Seeed-Studio/Grove_LCD_RGB_Backlight
    
    // Device I2C address
    var LCD_ADDRESS = 0x7c>>1;
    var RGB_ADDRESS = 0xc4>>1;
    
    // color define 
    var WHITE = 0;
    var RED = 1;
    var GREEN = 2;
    var BLUE = 3;
    
    var REG_RED = 0x04;   // pwm2
    var REG_GREEN = 0x03; // pwm1
    var REG_BLUE = 0x02;  // pwm0
    
    var REG_MODE1 = 0x00;
    var REG_MODE2 = 0x01;
    var REG_OUTPUT = 0x08;
    
    // commands
    var LCD_CLEARDISPLAY = 0x01;
    var LCD_RETURNHOME = 0x02;
    var LCD_ENTRYMODESET = 0x04;
    var LCD_DISPLAYCONTROL = 0x08;
    var LCD_CURSORSHIFT = 0x10;
    var LCD_FUNCTIONSET = 0x20;
    var LCD_SETCGRAMADDR = 0x40;
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Build and execute instructions

See also

Related functions

• require