So Much Problems with Arduino UNO about grove_lcd_rgb_backlight

[ReanimationXP]

Edit: I thought I had solved this but I was wrong at first. I was getting a lot of references to a missing "Wire.h" file. Turns out since I was using a RedBear Duo for this project (an enhanced clone of the Particle Photon) that means a couple things must be changed in that case. First, all references to Arduino, inttypes, Wire.h, etc need to be commented out both in code and in libraries, and replaced with #include "application.h", which is part of Particle's libraries. To do this:

I navigated to my local copy of https://github.com/Seeed-Studio/Grove_LCD_RGB_Backlight/blob/master/rgb_lcd.cpp and commented out

#include <Arduino.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <Wire.h>

Secondly I navigated to my local copy of https://github.com/Seeed-Studio/Grove_LCD_RGB_Backlight/blob/master/rgb_lcd.h and commented out

#include <inttypes.h>
#include "Print.h"

I also did the same on the example code,
https://github.com/Seeed-Studio/Grove_LCD_RGB_Backlight/blob/master/examples/HelloWorld/HelloWorld.ino
commenting out //#include <Wire.h>

Lastly I added #include "application.h" to all of these instances in lieu of the original code. This corrected the Hello World example for me and allowed it to compile. Now I have the problem of only getting the backlight to change color, no text is displayed. Never seen this before, but after some researching noticed that this is likely expecting 5v on the positive rail, and the RBLink I'm using with my RedBear Duo is only providing 3v3. Will try 5v and see how it goes.

Update: 5v worked great! Hours of headache over (two) stupid problems.

[jsilence]

The text is displayed when setting the display to one row:
lcd.begin(16, 1);
But then really only one row is usable. And the contrast of the text is very low.
Opening a separate issue for this.

[awong1900]

I can't found that compiling issue, so close. And feel free to fix it and I'll merge the change.