New 0.71" Round Display

[Basitadam]

Hi,
Anyone played with this little thing: https://tr.aliexpress.com/item/1005007531935475.html
I tried with these attached files and works quite good. Only there is no backlight pin, it is always on
GC9D01_Defines.txt
GC9D01_Init.txt
GC9D01_Rotation.txt

Of course you need to change file extensions to .h put them in TFT_Drivers folder and make modifications to TFT_eSPI.cpp and TFT_eSPI.h

[Basitadam]

Sample images:

[webfraggle]

Hello @Basitadam ,

Thank you for your work.
That takes me a step further. I have a 0.99’ display with 40x160 pixels and unfortunately it looks like the photo.
Can you share your changes to the other files?
Do you know what the problem might be?
Thank you very much
Christoph

[Basitadam]

Hi Christoph,
Thank you.

For 0.71" you can download all the files via this link: https://www.filemail.com/d/imvnzqfhncrrcue
Please make sure to backup your original files first. Just in case. Been some time, I might have missed a file or modification to send, let me know if it doesnt work.

For 0.99" which TFT controller is used? Seems like scan issue
Tim

[webfraggle]

Hello Tim,
thank you for your files. Just tried it, but the result is the same. I'm using this display https://de.aliexpress.com/item/1005005268679505.html with a GC9D01 Controller and a resolution of 40x160 Pixel.

Kind regards
Christoph

[Basitadam]

There is no pin description in the page. Did the seller send you it? Can you send your setup.h file

[webfraggle]

I'm not using the Arduino IDE, i'm using platform.io and these are my build flags:
`build_flags =

-DDEBUG=1
-DUSER_SETUP_LOADED=1
-DGC9D01_DRIVER=1
-DTFT_WIDTH=160
-DTFT_HEIGHT=160
; -DCGRAM_OFFSET=1
-DTFT_RGB_ORDER=0
-DTFT_RST=21 ; -> 4 RES
-DTFT_CS=-1
-DTFT_DC=47 ; -> 3 RS
-DTFT_MOSI=11 ; -> 1 SDA
-DTFT_SCLK=12 ; -> 2 SCL
-DLOAD_GLCD=1
-DLOAD_GFXFF=1
-DSPI_FREQUENCY=20000000
-DSPI_READ_FREQUENCY=20000000
; -DSPI_TOUCH_FREQUENCY=2500000
-DTFT_CS1=45 ; -> 5 CS
-DTFT_CS2=48 ; -> 5 CS
-DTFT_CS3=1
-DTFT_CS4=2
-DTFT_BL=14
-DBUTTON_PIN=0
-DBUTTON1_PIN=40
-DBUTTON2_PIN=39
-DNEOPIXEL_PIN=38
-DCONFIG_SPIRAM_SUPPORT=1

`

I have the pinout from another webpage:

[Basitadam]

Shouldn't one of these be 40?
-DTFT_WIDTH=160
-DTFT_HEIGHT=160

[webfraggle]

I had some Displays where I had to use a much larger size with an offset. But using the right resolution doesn't not change anything.

But I found out why your code isn't working. The controller is a GC9D01N and Liligo has a module with that display and a github repo for that.
And I used their init sequence and it works.

https://github.com/Xinyuan-LilyGO/T-0.99TFT/blob/main/src/TFT_GC9D01N.cpp

Thanks again for you work

[Basitadam]

Thank you for sharing. Did you build a set of eSPI files?

[webfraggle]

@Basitadam I have created a fork of Bodmers repo, so I can use it easy in my projects:

https://github.com/webfraggle/TFT_eSPI