ILI9341 not showing graphics but touch works.Teensy 3.6

[Mike5000]

EDIT: SOLVED. The problem was that I had wired SDI(MOSI) to the wrong pin.

Hi, I try to get the ILI9341 working on a new Teensy 3.6 setup here. The touch works (verified by serial terminal outputs) but there is nothing displayed on the ILI9341.
I have an audio board connected and used the wiring in the guide here https://www.pjrc.com/store/display_ili9341_touch.html for when the audio board is connected.

Can someone help me with how to debug this?

Below is the code I run. I know the code runs because there is serial output showing the touch x and y positions.

#include <Arduino.h>
#include <ILI9341_t3.h>
#include <font_Arial.h> // from ILI9341_t3
#include <XPT2046_Touchscreen.h>
#include <SPI.h>

#define CS_PIN  8
#define TIRQ_PIN  2
// MOSI=11, MISO=12, SCK=13

XPT2046_Touchscreen ts(CS_PIN, TIRQ_PIN);

//XPT2046_Touchscreen ts(CS_PIN);  // Param 2 - NULL - No interrupts
//XPT2046_Touchscreen ts(CS_PIN, 255);  // Param 2 - 255 - No interrupts
//XPT2046_Touchscreen ts(CS_PIN, TIRQ_PIN);  // Param 2 - Touch IRQ Pin - interrupt enabled polling

// For optimized ILI9341_t3 library
#define TFT_DC      20
#define TFT_CS      21
#define TFT_RST    255  // 255 = unused, connect to 3.3V
#define TFT_MOSI     7
#define TFT_SCLK    14
#define TFT_MISO    12
ILI9341_t3 tft = ILI9341_t3(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCLK, TFT_MISO);

void setup() {
  Serial.begin(38400);
  tft.begin();
  tft.setRotation(1);
  tft.fillScreen(ILI9341_BLACK);
  ts.begin();
  ts.setRotation(1);
  while (!Serial && (millis() <= 1000));
}

boolean wastouched = true;

void loop() {
  boolean istouched = ts.touched();
  if (istouched) {
    TS_Point p = ts.getPoint();
    if (!wastouched) {
      tft.fillScreen(ILI9341_BLACK);
      tft.setTextColor(ILI9341_YELLOW);
      tft.setFont(Arial_60);
      tft.setCursor(60, 80);
      tft.print("Touch");
    }
    tft.fillRect(100, 150, 140, 60, ILI9341_BLACK);
    tft.setTextColor(ILI9341_GREEN);
    tft.setFont(Arial_24);
    tft.setCursor(100, 150);
    tft.print("X = ");
    tft.print(p.x);
    tft.setCursor(100, 180);
    tft.print("Y = ");
    tft.print(p.y);
    Serial.print(", x = ");
    Serial.print(p.x);
    Serial.print(", y = ");
    Serial.println(p.y);
  } else {
    if (wastouched) {
      tft.fillScreen(ILI9341_BLACK);
      tft.setTextColor(ILI9341_RED);
      tft.setFont(Arial_48);
      tft.setCursor(120, 50);
      tft.print("No");
      tft.setCursor(80, 120);
      tft.print("Touch");
    }
    Serial.println("no touch");
  }
  wastouched = istouched;
  delay(100);
}

This is my platformio.ini file contents:

[env:teensy36]
platform = teensy
board = teensy36
framework = arduino
build_flags = -D USB_SERIAL
lib_deps = 
	paulstoffregen/ILI9341_t3@0.0.0-alpha+sha.ff4bba3e15
	paulstoffregen/XPT2046_Touchscreen@0.0.0-alpha+sha.26b691b2c8

 

[KurtE]

Glad you got it working