Custom Display

ESPHome
1

Hi all,

I’m new to ESPHome and quite impressed what it can do. Many thanks at this point to all contributors.

After doing my first steps I want to integrate one display which I have here into ESPHome: W082XLG

I tried to create a clone of the existing LCD integration and then add it via a custom include. The basis config in the yaml was as well the LCD example. Unfortunately I cannot use that module. It is not recognized as Plattform custom nore the name I gave it.

Is this mechanism not possible for displays?

Any idea? Did anyone already create custom displays?

Meinereiner

2

You give no actual clue as to what you have coded. Too vague.

3

You are right, here some more detailed information:

On the ESP8266 I already had this display running without ESPHome by using this code as a basis: https://www.lcd-module.de/fileadmin/html-seiten/deu/disk/development_service/Arduino/EA_Wxxx-XLG%20%20OLED%20textseries.zip

So I thought I take the existing LCD code as a reference:

Anyway, what I did is copying the folder from the link before in my config folder, renamed it accordingly:
esphome-configs/lcd_W082-XLG/
→ display.py
→ init.py
→ w082xlg_display.cpp
→ w082xlg_display.h

Then I integrated the entire folder:

esphome:
...
  includes:
      - lcd_W082-XLG

The is no difference when I directly link the .h file.
Then I tried to add it as a display:

display:
  - platform: lcd_w082xlg
    dimensions: 8x2
    lambda: |-
      it.print("Hello World!");

The class is called :

class W082xlgLCDDisplay : public lcd_base::LCDDisplay, public spi::SPIDevice {
...

The implementation is tagged with:

static const char *const TAG = "lcd_w082xlg";

When I try to compile I get the error that the platform is not found:

  Platform not found: 'display.lcd_w082xlg'.
  platform: lcd_w082xlg
  dimensions: 8x2
  lambda: it.print("Hello World!");

Where do I need to place the display implementation that it is found by the esphome compilation process?

4

Did you ever get this worked out? I would like to test a different display as well.

5

Hi,

Partly :slight_smile: I was able to create a custom display but I didn’t get it working with the internal SPI. The original example code was using a custom SPI implementation that did the job.

BUT: first I was doing it on an esp8266 where it was working like a charm, on an ESP32 it was constantly failing and only showing rubbish. This is why I replaced it :confused:

1 Like
6

Hi. Where did you end up pacing the files so it resolved your platform not found issue?

7

Unfortunately I was not able to recover the code as I gave up this display. It was not running stable due to the emulated SPI.
But as far as I remember I was using the full path to get it properly building …

Hope this helps!