Pico ResTouch-LCD-2.8 with ESP32 WROVER ( black screen )

[misiek303]

Pi Pico is very limited and wanted to use ESP32 anyway. But I know the Display works. https://www.waveshare.com/pico-restouch-lcd-2.8.htm

I switched to ESP32 WROVER but I got black screen. This screen supposed to work with ST7789.

my User_setup.h

define ST7789_DRIVER

**#define TFT_MISO 19

define TFT_MOSI 23

define TFT_SCLK 18

define TFT_CS 21

define TFT_DC 2

define TFT_RST 4**

define LOAD_GLCD

define LOAD_FONT2

define LOAD_FONT4

define LOAD_FONT6

define LOAD_FONT7

define LOAD_FONT8

define LOAD_GFXFF

define SMOOTH_FONT

define SPI_FREQUENCY 8000000L

define SPI_READ_FREQUENCY 2000000

define SPI_TOUCH_FREQUENCY 2500000

1. I tried most of the drivers and many different frequencies, but screen does not come to life.
2. I am confused about CLK and SDIO_CLK, I tried them both but not sure which one I should actually connect to ESP PIN 18.
3. I don't have LCD_BL connected to anywhere.

Any ideas ?

[misiek303]

I made some progress. I have digital clock running, but the the screen is very very dark, you can barely see the clock.

define ST7789_DRIVER

define TFT_WIDTH 240

define TFT_HEIGHT 320

define TFT_BACKLIGHT_ON HIGH

define TFT_MISO 19

define TFT_MOSI 23

define TFT_SCLK 18

define TFT_CS 14

define TFT_DC 27

define TFT_RST 33

define TFT_BL 32

define LOAD_GLCD

define LOAD_FONT2

define LOAD_FONT4

define LOAD_FONT6

define LOAD_FONT7

define LOAD_FONT8

define LOAD_GFXFF

define SMOOTH_FONT

define SPI_FREQUENCY 8000000L

define SPI_READ_FREQUENCY 6000000

define SPI_TOUCH_FREQUENCY 2500000

Turning #define TFT_BACKLIGHT_ON to LOW, make screen totally black.

Any ideas ?

[misiek303]

It needed additional 5V. I guess 3.3v for logic, 5V for BL.

[misiek303]

And this to display colors properly define TFT_RGB_ORDER TFT_BGR

Thanks. Nice chatting :)

[Bodmer]

Glad you found the solution! Apart from the pins the other setup settings should be the same as the RPi Pico.