Interfacing ST75161 160x160 display using ESP32-S3 and U8G2 but it is not working

[ESPM-Jeet-S]

Greetings,

I am currently using ST75161 LCMD160x160 display which uses CS, DC, RESET, MOSI and SCK pins. I am trying to interface this display with ESP32-S3 but it seems like display is not responding at all. I have tried using signal analyser and GPIOs are working. Also, circuit of display and other hardware connection are good.

I would be helpful if you guys can guide me through it. Here, I have attached code for the reference and schematic I received from the supplier.

`#include <Arduino.h>
#include <U8g2lib.h>
#include <SPI.h>

// End of constructor list
U8G2_ST75161_JLX160160_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/36, /* data=*/35, /* cs=*/39, /* dc=*/38, /* reset=*/37);
//U8G2_ST75160_JM16096_F_4W_SW_SPI u8g2(U8G2_R0, /* clock=*/36, /* data=*/35, /* cs=*/39, /* dc=*/38, /* reset=*/37);
void setup(void) {
  Serial.begin(115200);
  while (!Serial);
  Serial.println("init...");
  pinMode(GPIO_NUM_39, OUTPUT);
  pinMode(GPIO_NUM_38, OUTPUT);
  pinMode(GPIO_NUM_37, OUTPUT);

  delay(1000);
  if (u8g2.begin()) {
    Serial.println("display init");
  }
  delay(50);
  u8g2.setContrast(160);
  delay(100);
}

void loop(void) {
  u8g2.clearBuffer();                   // clear the internal memory
  u8g2.setFont(u8g2_font_ncenB08_tr);   // choose a suitable font
  u8g2.drawStr(0, 10, "Hello World!");  // write something to the internal memory
  u8g2.sendBuffer();                    // transfer internal memory to the display
  delay(1000);
}`

[ESPM-Jeet-S]

It was issue with the contrast. I set contrast to 180 and it started working