TTGO T-WATCH-2020 v3 Support

[jouellnyc]

Hello. Tremendous repo. (Most other blogs left me without working v3 so far, well done here!)

I noticed:

"""TTGO TWATCH-2020 V2 with ST7789 240x240 display""" in the tft_config.py so am wondering if there is v3 support coming.

For reference, I dabbled with some basic changes for the v3's IO pins/etc I found here:

https://www.aliexpress.us/item/3256802898629918.html

i.e After just changing the config function in tft_config.py as below (basically just the backlight) made the V3 work beautifully. I can see the example watch face.

def config(rotation=0, buffer_size=0, options=0):
    axp = axp202c.PMU()
    axp.enablePower(axp202c.AXP202_LDO2)
    return st7789.ST7789(
        SPI(1, baudrate=32000000, sck=Pin(18, Pin.OUT), mosi=Pin(19, Pin.OUT)),
        240,
        240,
        cs=Pin(5, Pin.OUT),
        dc=Pin(27, Pin.OUT),
        backlight=Pin(15, Pin.OUT),
        buffer_size=buffer_size)

I have not had too much time to delve deeper in terms of what is different on the V3, perhaps this will help others get started.

(FWIW, I tried lots of things/blogs before this firmwmare, this repo was the only one (w/ the above change) to actually get the V3 to work.

Thanks!