Connections for LCD screen to ESP using SPI?

Using Arduino Project Guidance
1

I'm using this as a guide for hooking up an LCD screen via SPI:

The guide uses an UNO as its board of choice, but I'm using an ESP8266 - https://www.amazon.com/gp/product/B010O1G1ES/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1

So I'm following the guide and I installed the Adafruit GFX and HX8357 libraries. Now I'm trying to run the 'graphicstest' example sketch from the HX library, but I'm not sure about all the connections of my LCD screen to my ESP.

It looks like I want
CLK -> D5
MISO -> D6
MOSI -> D7
CS -> D8

... but what do I want for D/C?

Once thats determined, what do I want to define for CS and DC in the example code? I cant tell if these numbers represent digital pins or GPIO pins or what. Heres the beginning part of the example code unmodified:

#include <SPI.h>
#include "Adafruit_GFX.h"
#include "Adafruit_HX8357.h"

// These are 'flexible' lines that can be changed
#define TFT_CS 10
#define TFT_DC 9
#define TFT_RST 8 // RST can be set to -1 if you tie it to Arduino's reset

// Use hardware SPI (on Uno, #13, #12, #11) and the above for CS/DC
Adafruit_HX8357 tft = Adafruit_HX8357(TFT_CS, TFT_DC, TFT_RST);

Any thoughts would certainly be appreciated, thanks!

2

I've since switched to the Metro Mini board, which is Uno compatible in terms of pins, etc. This means the example sketch now works out of the box unmodified, which is great.

I'd still be interested in any thoughts on getting this LCD to work with the esp though, so if anyone has any ideas, please share! Thanks!

3

It is hard to see what your problem is. You are probably aware that the user SPI bus is on pins 12-15, and the code clearly says that the pins for CS and DC may be changed. The latter is because they are not part of the SPI bus.

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