Help required to Interface Sparkfun TFT LCD (1.8") with Olimex Esp32 POE

Components & Accessories Displays
1

Hi Team,

Sorry for the inconvenience. I was trying to interface the Olimex Esp32-POE-ISO board with Sparkfun TFT LCD. But I am not able to connect them, since the Olimex ESP32 board already uses SPI pins, I am using custom pins for my requirement. I am not getting any errors. But nothing comes in the LCD screen. I have tried the modified version of the example library given by Sparkfun(HyperDisplay_KWH018ST01_4WSPI).

#include "HyperDisplay_KWH018ST01_4WSPI.h" // Click here to get the library: http://librarymanager/All#SparkFun_HyperDisplay_KWH018ST01_4WSPI
                                           // Click here to get the mid-level library: http://librarymanager/All#SparkFun_HyperDisplay_ILI9163C
                                           // Click here to get HyperDisplay (top level): http://librarymanager/All#SparkFun_HyperDisplay
#include <SPI.h>
#define SERIAL_PORT Serial    // Allows users to easily change target serial port (e.g. SAMD21's SerialUSB)

#define HSPI_MOSI 13
#define HSPI_SCLK 3

#define MOSI 13
#define PWM_PIN 2             // Pin definitions
#define CS_PIN 14
#define DC_PIN 15
#define SCLK 3

//#define VSPI_MISO   2
//#define VSPI_MOSI   4
//#define VSPI_SCLK   0
//#define VSPI_SS     33
//
//#define HSPI_MISO   33
//#define HSPI_MOSI   34
//#define HSPI_SCLK   35
//#define HSPI_SS     36

#define SPI_PORT SPI
#define SPI_SPEED 32000000        // Requests host uC to use the fastest possible SPI speed up to 32 MHz

KWH018ST01_4WSPI myTFT;           // The KWH018ST01_4WSPI class is used for this breakout, and we will call our object myTFT

ILI9163C_color_18_t defaultColor; // Global objects are used for default colors so that they are always in-scope

void setup() {
  SERIAL_PORT.begin(115200);
  

  //Uncomment this if you want to wait to println until the serial monitor is open.
  //while (!SERIAL_PORT); //Wait for Serial Monitor to Open

  SERIAL_PORT.println("Example1 Display Test : SparkFun TFT LCD 1.8in Breakout");

  myTFT.begin(DC_PIN, CS_PIN, PWM_PIN, SPI_PORT, SPI_SPEED);
  myTFT.clearDisplay();

  myTFT.setTextCursor(0,0);            // Sets the cursor relative to the current window, however the current (default) window is equivalent to the whole display. (0,0) is the upper left corner and (myTFT.xExt-1, myTFT.yExt-1) is the lower right
  myTFT.setCurrentWindowColorSequence((color_t)&defaultColor);

  uint16_t hue = HSV_HUE_MIN;
  SERIAL_PORT.println("reached here");
  while(hue <= HSV_HUE_MAX){
    myTFT.setTextCursor(0,0);
    defaultColor = myTFT.hsvTo18b( hue+=30, 255, 255 );
    myTFT.println("Hello world!");   // Prints using the default font at the cursor location
    //Serial.println("1");
  }
}

void loop() {
    lineTest();
    delay(500);

    rectTest();
    delay(500);

    circleTest();
    for(uint8_t indi = 250; indi > 1; indi--){
      myTFT.setBacklight(indi); // Set the brightness of the backlight using PWM output
      delay(10);
    }
    for(uint8_t indi = 0; indi < 250; indi++){
      myTFT.setBacklight(indi); // Set the brightness of the backlight using PWM output
      delay(10);
    }
    delay(500);
}

void lineTest( void )
{
  ILI9163C_color_18_t color;

  myTFT.clearDisplay();

  color = myTFT.rgbTo18b( 255, 255, 255 );
  for(hd_hw_extent_t indi = 0; indi < myTFT.xExt; indi++)
  {
    myTFT.line(0,0,indi,myTFT.yExt-1,1,(color_t)&color);
  }

  color = myTFT.rgbTo18b( 255, 0, 0 );
  for(hd_hw_extent_t indi = 0; indi < myTFT.yExt; indi++)
  {
    myTFT.line(0,myTFT.yExt-1,myTFT.xExt-1,myTFT.yExt-indi-1,1,(color_t)&color);
  }

  color = myTFT.rgbTo18b( 0, 255, 0 );
  for(hd_hw_extent_t indi = 0; indi < myTFT.xExt; indi++)
  {
    myTFT.line(myTFT.xExt-1,myTFT.yExt-1,myTFT.xExt-indi-1,0,1,(color_t)&color);
  }

  color = myTFT.rgbTo18b( 0, 0, 255 );
  for(hd_hw_extent_t indi = 0; indi < myTFT.yExt; indi++)
  {
    myTFT.line(myTFT.xExt-1,0,0,indi,1,(color_t)&color);
  }
}

void rectTest( void )
{
  myTFT.clearDisplay();
  ILI9163C_color_18_t color;

  color = myTFT.rgbTo18b( 255, 255, 255 );
  for(uint8_t indi = 0; indi < myTFT.xExt/2; indi+=1)
  {
    myTFT.rectangle(myTFT.xExt/2-1-indi, myTFT.yExt/2-1-indi, myTFT.xExt/2+1+indi, myTFT.yExt/2+1+indi, false, (color_t)&color);
    delay(50);
  }

  color = myTFT.rgbTo18b( 0, 0, 255 );
//  for(uint8_t indi = 0; indi < myTFT.xExt/2; indi+=1)
//  {
//    myTFT.rectangle(myTFT.xExt/2-1-indi, myTFT.yExt/2-1-indi, myTFT.xExt/2+1+indi, myTFT.yExt/2+1+indi, false, (color_t)&color);
//    delay(50);
//  }

  myTFT.rectangle(0, 0, myTFT.xExt, myTFT.yExt, true, (color_t)&color);


  color = myTFT.rgbTo18b( 0, 0, 0 );
  for(uint8_t indi = 0; indi < myTFT.xExt/2; indi+=1)
  {
    myTFT.rectangle(myTFT.xExt/2-1-indi, myTFT.yExt/2-1-indi, myTFT.xExt/2+1+indi, myTFT.yExt/2+1+indi, false, (color_t)&color);
    delay(50);
  }
}

void circleTest( void )
{
  myTFT.clearDisplay();
  ILI9163C_color_18_t color;

  for(uint8_t indi = 0; indi < (myTFT.xExt/2 - 1); indi++)
  {
    color = myTFT.hsvTo18b( (uint16_t)((double)(((double)HSV_HUE_MAX*indi)/((double)myTFT.xExt/2 - 1))), 255, 255 );
    myTFT.circle((myTFT.xExt/2 - 1),(myTFT.yExt/2 - 1),(myTFT.xExt/2 - 1)-indi, true, (color_t)&color);
    delay(100);
  }
}

Please let me know if you found any errors in the script.

Product Reference

1.https://www.olimex.com/Products/IoT/ESP … e-hardware

2.https://www.sparkfun.com/products/15143

2

I’d guess that not having them would throw an error, but perhaps ensure you have all 3 of the required libraries being called

"// Click here to get the library: http://librarymanager/All#SparkFun_Hype … ST01_4WSPI

// Click here to get the mid-level library: http://librarymanager/All#SparkFun_Hype … y_ILI9163C

// Click here to get HyperDisplay (top level): http://librarymanager/All#SparkFun_HyperDisplay"

Other than that…do you have a different microcontroller you could test it with?