Do I need this pin? ST7789 DC pin?

[MJU20]

I've got a LilyGo T8 V1.1 board with a ESP32-S2 chip and a ST7789 display onboard.

In the properties for the ST7789 display I can not disable the DC pin

st7789-1.jpg (67.35 KiB) Viewed 3857 times

The board doesn't seem to have a DC pin attached to the display.
The display isn't working maybe because of this non existing pin?



Any ideas about this problem?

[mnfisher]

The display does use a D/C pin (to select data or command)
They have maybe missed it from the diagram?

[medelec35]

Hello.
I have read that the documentation has errors.
Can you try the following:
CS - 34 (B2)
DC - 37 (B5)
RST - 38 (B6)
LED BL - 33 (B1)
MOSI - 35 (B3)
CLK 36 (B4)
MISO -Any unused pin as not used.


I have not got the hardware to confirm the above connections, So I can't guarantee it will work.

[MJU20]

Thank you both!!

But this doesn't work either..
It seems that the DC pin is not used on the display?

Strange because fresh out of the box it works by showing the LilyGo logo on the screen..

st7789.jpg (98.78 KiB) Viewed 3824 times