ST7789VI and 3-wire interface, ESP32 s3

[mgrigoni]

Hi there,
I'm having no luck with Newhaven 240x320 2.4" IPS display (ST7789VI with 3-wire , 9-bit SPI interface).
Using latest Arduino_gfx 1.5.5 with ESP32s3. The backlite is on, just don't get the blue fill with the code below.
I know I wired it correctly, since I get expected results when I use Newhaven provided code example
using exact same setup.

Just can't make it work with arduino_gfx. I would appreciate if anyone could give me some pointers
what might be going on..

Thanks

Regards

Marius

---

#include <Arduino.h>
#include <Arduino_GFX_Library.h>

// Define pins for the 3-wire SPI interface
#define TFT_CLK 6
#define TFT_MOSI 7
#define TFT_CS 5
#define TFT_RST 4

Arduino_DataBus *bus = new Arduino_ESP32SPI(GFX_NOT_DEFINED, TFT_CS, TFT_CLK, TFT_MOSI, GFX_NOT_DEFINED, HSPI);
Arduino_GFX gfx = new Arduino_ST7789(bus, TFT_RST, 0 / rotation /, true / IPS /, 240 / width /, 320 / height */);

void setup() {

Serial.begin(115200);

gfx->begin();
gfx->fillScreen(BLUE);

delay(5000);
}

void loop() {

}

[moononournation]

is it ok if using SWSPI？

[mgrigoni]

Yes, but that one is too slow for my application. Need high frame rate.

Using ESP32SPI, I also tried to override datamode to other than 3 (I believe 3 is default) but that did not help either.

Any pointers? I appreciate your help!