Added ESP32 support

[anabolyc]

Fixes #<GitHub-issue-number>.

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<Description of and rationale behind this PR>

[edasque]

So this was never merged, was it?

[anabolyc]

I've created it accidentally, intention was to keep in in fork. My changes would break upstream repo.

[edasque]

Gotcha. I can't create issues on https://github.com/anabolyc/esp32-esp8266-weather-station-color - do you think it would work on a LILYGO TTGO T-Display ESP32 (IPS ST7789V 1.14 Inch at 135px*240px) and if not, what should I be looking at to make it work (guessing you don't support that display resolution), @anabolyc ?

[anabolyc]

@edasque I'm using same display controller and don't have touch, so it will work. Please have a look at platformio.ini file and make pinout and screen size adjustments, it should work with no code changes apart from that.

[edasque]

Some of that worked but not the display. Serial monitor gets up to:

start document
Free mem: 264904

with

	-D ST7789_TFTWIDTH=135
	-D ST7789_TFTHEIGHT=240
	-D TFT_CS=5
	-D TFT_RST=23
	-D TFT_DC=16
	-D TFT_LED=4
	-D TFT_ROTATION=0
	-D TFT_MOSI=19
	-D TFT_SCLK=18

But I think the earlier screen setup part probably isn't working. I changed the code to:

  gfx.init();
  gfx.fillBuffer(MINI_YELLOW/);
  gfx.setRotation(TFT_ROTATION);
  gfx.commit();

And it doesn't turn yellow (LED is on though)

Where would you start debugging?

[anabolyc]

@edasque pinout seems right, MOSI and SCLK is redundant, since it is configured as HW SPI. Really hard to say without having board to poke around.
I'd try to run Bodmer's TFT_eSPI and Adafruit ST7789 lib samples, as soon as you'd get it to work you can check what is the initialization code that works.