The Creality printers are so popular that it is important to support its display controller. Finding pin mappings on the Internet was impossible (They merged 2x 10-pin to 1x 10-pin)
Here is the secret undiscovered PIN layout of their connector (The button pins might need a swap)
5V GND
SID ?
SCLK Btn_En1
CS Btn_En2
Click Beeper
Here is my Klipper config for the BigTreeTech SKR 1.3 control board.
## Creality Ender-3 / CR-10 Full Graphic Smart Controller - 1x 10 pin cable ##
[display]
lcd_type: st7920
cs_pin: P1.19
sclk_pin: P1.21
sid_pin: P1.23
encoder_pins: ^P1.18, ^P1.20
click_pin: !P0.28
#
[output_pin beeper]
pin: P1.30
using the multimeter it seems it's on the right