Please add support for GC9D01N_40*160 LCD

[iggymayer]

Datasheet:
https://mega.nz/folder/VNMkzKiR#A7V1B4k2vza7yTO_WvD5-Q

Thank you!

[iggymayer]

New files has been uploaded: TTH089HVG-01.pdf & GC9D01N_init.txt

[Bodmer]

Post web links to vendor pages for the screens.

[iggymayer]

https://www.panelook.cn/QT099-0416THBIG01-detail_cn_158790.html
https://www.panelook.cn/TTH089HVG-01-detail_cn_159005.html
https://item.taobao.com/item.htm?spm=a230r.1.14.1.79b84a04eGyh5m&id=677743417274&ns=1&abbucket=4#detail
https://item.taobao.com/item.htm?spm=a230r.1.14.33.79b84a04eGyh5m&id=686026085866&ns=1&abbucket=4#detail

[Bodmer]

Since I do not have one of those displays it would not be possible to test any updates. Do you have a display connected up and running with code? If so which processor are you using?

[iggymayer]

vscode&platformio

[iggymayer]

Rotation.h file TFT_MAD_BGR modified to TFT_MAD_RGB, the color anomaly problem has been resolved.

rotation = m % 4;

writecommand(TFT_MADCTL);
switch (rotation) {
case 0: // Portrait
writedata(TFT_MAD_RGB);
_width = _init_width;
_height = _init_height;
break;
case 1: // Landscape (Portrait + 90)
writedata(TFT_MAD_MX | TFT_MAD_MV | TFT_MAD_RGB);
_width = _init_height;
_height = _init_width;
break;
case 2: // Inverter portrait
writedata(TFT_MAD_MX | TFT_MAD_MY | TFT_MAD_RGB);
_width = _init_width;
_height = _init_height;
break;
case 3: // Inverted landscape
writedata(TFT_MAD_MV | TFT_MAD_MY | TFT_MAD_RGB);
_width = _init_height;
_height = _init_width;
break;
}

[Bodmer]

Great, so the flickering is gone too, and it is all working OK?

[iggymayer]

There is also a problem that there are several pixels in the corners of the screen that show other colors all the time, but the screen is normal (all pixels have no defective pixel).

[iggymayer]

fillRect(1, 1, 38, 158, TFT_RED)
https://github.com/Xinyuan-LilyGO/T-0.99TFT
Use this library to display normally.

[Shamsyrup]

fillRect(1, 1, 38, 158, TFT_RED) https://github.com/Xinyuan-LilyGO/T-0.99TFT Use this library to display normally.

Hi could you share your code and modified files ? I Got the same display and unable to display anything.

[iggymayer]

init code:
https://mega.nz/folder/VNMkzKiR#A7V1B4k2vza7yTO_WvD5-Q

rotation code:
#2638 (reply in thread)

There is currently a defect that cannot be solved and does not display perfectly.

⬇Use this library to display normally.
https://github.com/Xinyuan-LilyGO/T-0.99TFT

If it still doesn't display, replace the screen or check the hardware design.