Waveshare E-Paper: Waveshare example working, GxEPD library not

Other Hardware Displays
1

Hi all,

I refer to discussion Waveshare E-Paper: Waveshare example working, GxEPD library not - Displays - Arduino Forum

I've the same problem

I have the original Waveshare e-paper (7.5" b/w) and the e-Paper driver board. This has a ESP 8266 ESP-12F on it.

I can load the original example from the waveshare homepage and I can send an image to the display. So controller and display are confiremed to work.

Now I am trying an GxEPD example and the display never updates....

Only different from setup is, my display is a 4.2" with 3 Colours.

I tried many things but the display does not show anything expcept the image which I can upload with the waveshare demo script.

My goal is to fill the display with text and some images.

My last try was the recommendadtion from ZinggJM

Try example GxEPD2_WS_ESP32_Driver.ino

But this one drives me crazy, I think I'm to stupid for that. With this script I always got errors
see attachement error1.png

error1.png
error1.png1363×865 113 KB

error1.png
error1.png1363×865 113 KB

GxEPD2_WS_ESP32_Driver.ino (38.3 KB)

2

@quaker75,

welcome to the forum and the Displays section.

Please read How to get the best out of this forum (short version)

Please post links to the devices in question.

Don't post pictures of error output; nobody will look at it.

Do not confound ESP32 and ESP8266, neither for compiling, nor for examples used.

Note that there are 2 versions of the ESP8266 driver board from Waveshare, with different pinout. Check.

Jean-Marc

3

Hi, ok here are my setup.
Display

Display Driver

And I am not able to write text on this display. I’m really new within this topic so please try to explain your ideas for dummies.

4

Just try to configure the example GxEPD2_Example for your configuration (by selecting/uncommenting), compile and run it.

There is even a function for you: void helloWorldForDummies().

Then ask what you don't understand. Report if it doesn't work. Observe diagnostic output in Serial Monitor.

5

Hi,
found problem. Seems to be this one works for me
// adapt the constructor parameters to your wiring
// mapping of Waveshare e-Paper ESP8266 Driver Board, new version
GxEPD2_DISPLAY_CLASS<GxEPD2_DRIVER_CLASS, MAX_HEIGHT(GxEPD2_DRIVER_CLASS)> display(GxEPD2_DRIVER_CLASS(/CS=15/ EPD_CS, /DC=4/ 4, /RST=2/ 2, /BUSY=5/ 5));
Thanks and Regards
Sven

6

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