Support

Hello

I wonder if somewhow my backlight colors are inverted

https://www.youtube.com/watch?v=x91qp-ex7qM

I could not find any description about the menu colors

In my case, the backlight when doing the self-test is blue

then when ready seems to be green+blue

Sleeping is red

and in menu all colors are OFF, I can bearly read the text with another light source

So are they inverted?

If so, I wonder if I can fix it by altering the line 506 in LiquidTWI2.cpp

from 

well, to answer my own post:

!_backlightInverted  instead of _backlightInverted  does indeed invert the colors

I compiled it and now it's usable, although not as it should be.

Colors now are:

Ready: RED
Sleeping: BLUE+GREEN
Menu: WHITE

The LCD pinout is the same, I did test the LCD using 5V, but the LCD colors are triggered with positive 5V, not with GND 0V

Maye the detected  LCD is wrong, is there any way to see what LCD type did openevse detect?

Or to force a specific LCD type?

the pinout should be the same, except for reversing of the GND and +5V, thus my need to invert the backlight

But indeed it would seem the red and green are swapped, thanks! I should have realized it too, but I did not see the pattern  :)

I will check the wiring between the LCD and MCP23017

Notice the 3rd columd, it says: 5V for ON  and low lever (GND) for OFF  for pins 16-18.

And I can confirm that in practice I tested it and the RGB lights on with 5V on pins 16-18

Well, I did check my wiring and what do you know, indeed the Red and Green were inversed, just as you predicted  :)

So now colors look as they should, at least the ones I managed to test before connecting the cable going to the car and testing the charging / connected colors

anyway for future readers:  
if you have LCDs that have backlight colors triggered with 5V instead of GND,   adding just one character:  "!" and recompiling solves the problem  :)

And of course, having OpenEVSE Support telling you what should have been obvious helps a lot!