Sunton ESP32-8048S050 backlight ok but no display

[plord12]

Perform all steps below and tick them with [x]

• Check the related part of the Documentation
• Update openHASP to the latest version
• Reproduce the issue and describe all steps

Describe the bug

On ESP32-8048S050, although the backlight works there is nothing drawn on the display. Sometimes you get slow flashing whole-screen colours.

See #861 for chat.

To Reproduce

Use https://nightly.openhasp.com/ to flash device - on startup, no graphics is seen.

Expected behavior

On flashing, you should see the hostname & IP address

Screenshots or video

[plord12]

Note that I have a PR pending

[plord12]

Note that high values of TFT_PREFER_SPEED is required to make the screen work but too high and the wifi slows considerably.