ESP32 3.0.0-a appears to break TFT_eSPI on at least ESP32C3 with GC9A01 driver

[Shaolo]

I can't speak to other combos, but I made the mistake of starting with 3.0.0-a instead of 2.0.14.

Really long story short, on 3.0.0-a , it will compile, won't run w/o USE_HSPI_PORT, but will only draw a black screen. If USE_HSPI_PORT isn't declared, then the code hangs in the init function.

Roll back to 2.0.14 if you're seeing this and banging your head against the wall.

This is also a working config for the ESP32C3 boards with the little round display attached on AliExpress that use the GC9A01 driver.

// See SetupX_Template.h for all options available
#define USER_SETUP_ID 200

#define GC9A01_DRIVER

#define TFT_WIDTH 240 // GC9A01 240 x 240
#define TFT_HEIGHT 240 // GC9A01 240 x 240

#define TFT_SCLK 6
#define TFT_MOSI 7 // In some display driver board, it might be written as "SDA" and so on.
#define TFT_DC 2 // Data Command control pin

#define TFT_CS 10 // Chip select control pin

#define TFT_RST -1 // Reset pin (could connect to Arduino RESET pin)

#define TFT_BL 3 // LED back-light
#define TFT_BACKLIGHT_ON HIGH // Level to turn ON back-light (HIGH or LOW)

#define LOAD_GLCD // Font 1. Original Adafruit 8 pixel font needs ~1820 bytes in FLASH
#define LOAD_FONT2 // Font 2. Small 16 pixel high font, needs ~3534 bytes in FLASH, 96 characters
#define LOAD_FONT4 // Font 4. Medium 26 pixel high font, needs ~5848 bytes in FLASH, 96 characters
#define LOAD_FONT6 // Font 6. Large 48 pixel font, needs ~2666 bytes in FLASH, only characters 1234567890:-.apm
#define LOAD_FONT7 // Font 7. 7 segment 48 pixel font, needs ~2438 bytes in FLASH, only characters 1234567890:.
#define LOAD_FONT8 // Font 8. Large 75 pixel font needs ~3256 bytes in FLASH, only characters 1234567890:-.
#define LOAD_GFXFF // FreeFonts. Include access to the 48 Adafruit_GFX free fonts FF1 to FF48 and custom fonts

#define SMOOTH_FONT

#define SPI_FREQUENCY 80000000

// Optional reduced SPI frequency for reading TFT
#define SPI_READ_FREQUENCY 20000000

As an aside, LovyanGFX was working with 3.0.0-a and that's part of what took me so long to figure this out. Hope this helps someone else.

[Bodmer]

When 3.0.0 has been debugged and released I will see if any changes to the library are required.

[Basitadam]

I had the same issue wtih 3.0.2 as well. Runs OK with 3.0.1, 3.0.3 and 3.0.4