Waveshare 2.9inch E-Ink Rev2.1 - Wemos D1 Mini ESP8266

Waveshare 2.9inch E-Ink Rev2.1 - Wemos D1 Mini ESP8266

Arduino Lib.: GxEPD
Class: GxGDEH029A1
Pinout:
BUSY (purple)   4 D2
RST  (white)   12 D6
DC   (green)   16 D0
CS   (orange)   5 D1
CLK  (yellow)  14 D5
DIN  (blue)    13 D7
GND  (brown)  GND
VCC  (grey)   3v3

GxIO_Class io(SPI, /*CS=D8*/ 5, /*DC=D3*/ 16, /*RST=D4*/ 12);
GxEPD_Class display(io, /*RST=D4*/12, /*BUSY=D2*/ 4);

Obs.:
SPI
M-CLK => D5
MISO => D6
MOSI => D7
(SPI Bus SS (CS)is D8.)