Tft not responding

Using Arduino Displays
1

I have arduino uno with 3.5"(?) tft touchscreen and using MCUFRIEND_KBV library
Screen itself is working and buttons do work but when I add my rotary encoder to it, the buttons stop working and screen does not respond to touch.

#if 1
#include <Arduino.h>
#include <RotaryEncoder.h>
#define PIN_IN1 12
#define PIN_IN2 13
#define ROTARYSTEPS 0
#define ROTARYMIN -360
#define ROTARYMAX 360
RotaryEncoder encoder(PIN_IN1, PIN_IN2, RotaryEncoder::LatchMode::TWO03);

int lastPos = -1;

#include <Adafruit_GFX.h>
#include <MCUFRIEND_kbv.h>
MCUFRIEND_kbv tft;
#include <TouchScreen.h>
#include <Fonts/FreeSans9pt7b.h>
#include <Fonts/FreeSans12pt7b.h>
#include <Fonts/FreeSerif12pt7b.h>

#include <FreeDefaultFonts.h>
#define MINPRESSURE 50
#define MAXPRESSURE 1000
void(* resetFunc) (void) = 0;
// ALL Touch panels and wiring is DIFFERENT
// copy-paste results from TouchScreen_Calibr_native.ino
const int XP = 7, XM = A1, YP = A2, YM = 6; //240x320 ID=0x6809
const int TS_LEFT = 928, TS_RT = 105, TS_TOP = 63, TS_BOT = 918;


TouchScreen ts = TouchScreen(XP, YP, XM, YM, 400);

Adafruit_GFX_Button on_btn, off_btn, on1_btn, off1_btn, stop_btn;

int pixel_x, pixel_y;     //Touch_getXY() updates global vars
bool Touch_getXY(void)
{
  TSPoint p = ts.getPoint();
  pinMode(YP, OUTPUT);      //restore shared pins
  pinMode(XM, OUTPUT);
  digitalWrite(YP, HIGH);   //because TFT control pins
  digitalWrite(XM, HIGH);
  bool pressed = (p.z > MINPRESSURE && p.z < MAXPRESSURE);
  if (pressed) {
    pixel_x = map(p.x, TS_LEFT, TS_RT, 0, tft.width()); //.kbv makes sense to me
    pixel_y = map(p.y, TS_TOP, TS_BOT, 0, tft.height());
  }
  return pressed;
}

#define BLACK   0x0000
#define NAVY 0x000F
#define DARKGREEN 0x03E0
#define DARKCYAN 0x03EF
#define MAROON 0x7800
#define PURPLE 0x780F
#define OLIVE 0x7BE0
#define LIGHTGREY 0xC618
#define DARKGREY 0x7BEF
#define BLUE 0x001F
#define GREEN 0x07E0
#define CYAN 0x07FF
#define RED 0xF800
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
#define ORANGE 0xFD20
#define GREENYELLOW 0xAFE5
#define PINK 0xF81F

void setup(void)
{

  pinMode(10, OUTPUT); // Motor pin 1
  pinMode(11, OUTPUT); // Motor pin 2

  Serial.begin(115200);

  uint16_t ID = tft.readID();

  if (ID == 0xD3D3) ID = 0x9486; // write-only shield
  tft.begin(ID);
  tft.setRotation(0);            //PORTRAIT
  tft.fillScreen(BLACK);
  on_btn.initButton(&tft,  60, 250, 115, 40, LIGHTGREY, LIGHTGREY, BLACK, "R-LEFT", 2);
  off_btn.initButton(&tft, 180, 250, 115, 40, LIGHTGREY, LIGHTGREY, BLACK, "R-RIGHT", 2);


  on1_btn.initButton(&tft,  60, 299, 115, 40, LIGHTGREY, LIGHTGREY, BLACK, "SWR / PWR", 2);
  off1_btn.initButton(&tft, 180, 299, 115, 40, LIGHTGREY, LIGHTGREY, BLACK, "RESET", 2);


  stop_btn.initButton(&tft, 120, 205, 235, 40, LIGHTGREY, LIGHTGREY, RED, "STOP!", 2);

  on_btn.drawButton(false);
  off_btn.drawButton(false);

  on1_btn.drawButton(false);
  off1_btn.drawButton(false);

  stop_btn.drawButton(false);

  tft.fillRect(0, 0, 240, 80, DARKGREY);


}


void rot(void) {
  for (int i = 0; i < 1000000; i++) {
    encoder.tick();
    int newPos = encoder.getPosition() * 0.75;

    if (newPos < ROTARYMIN) {
      analogWrite(10, 0);
      analogWrite(11, 0);
      newPos = ROTARYMIN;

    } else if (newPos > ROTARYMAX) {
      analogWrite(10, 0);
      analogWrite(11, 0);
      newPos = ROTARYMAX;

    }

    if (lastPos != newPos) {

      Serial.println(newPos);
      Serial.println();
      lastPos = newPos;
      tft.setTextColor(GREEN, BLACK);
      tft.setTextSize(2);
      tft.setCursor(5, 120);
      tft.print(newPos);
      tft.print("         ");
    }

  }
}



void loop(void)
{

  bool down = Touch_getXY();

  showmsgXY(65, 10, 3, NULL, "OH1CJO");
  showmsgXY(30, 40, 2, NULL, "Antenna rotator");
  showmsgXY(30, 60, 2, NULL, "SWR / PWR meter");

  showmsgXY2(5, 85, 1, NULL, "OUTSIDE TEMP: 5c");
  showmsgXY2(142, 85, 1, NULL, "INSIDE TEMP: 21c");

  on_btn.press(down && on_btn.contains(pixel_x, pixel_y));
  off_btn.press(down && off_btn.contains(pixel_x, pixel_y));

  on1_btn.press(down && on1_btn.contains(pixel_x, pixel_y));
  off1_btn.press(down && off1_btn.contains(pixel_x, pixel_y));

  stop_btn.press(down && stop_btn.contains(pixel_x, pixel_y));



  if (on_btn.justReleased())
    on_btn.drawButton();
  if (off_btn.justReleased())
    off_btn.drawButton();
  if (on1_btn.justReleased())
    on1_btn.drawButton();
  if (off1_btn.justReleased())
    off1_btn.drawButton();
  if (stop_btn.justReleased())
    stop_btn.drawButton();

  if (stop_btn.justPressed()) {
    stop_btn.drawButton(true);
    analogWrite(10, 0);
    analogWrite(11, 0);

    tft.setTextColor(RED, BLACK);
    tft.setTextSize(2);
    tft.setCursor(10, 100);
    tft.print("     STOPPED!             ");
  }
  if (on_btn.justPressed()) {
    on_btn.drawButton(true);
    analogWrite(10, 100);
    analogWrite(11, 0);

    tft.setTextColor(RED, BLACK);
    tft.setTextSize(2);
    tft.setCursor(25, 100);
    tft.print(" Rotating left!  ");
  }

  if (off_btn.justPressed()) {
    off_btn.drawButton(true);
    analogWrite(11, 100);
    analogWrite(10, 0);

    tft.setTextColor(RED, BLACK);
    tft.setTextSize(2);
    tft.setCursor(25, 100);
    tft.print(" Rotating right!  ");
  }



  if (on1_btn.justPressed()) {
    on1_btn.drawButton(true);
    tft.setTextColor(WHITE, BLACK);
    tft.setTextSize(2);
    tft.setCursor(25, 100);
    tft.print("SWR / PWR METER!");

  }
  if (off1_btn.justPressed()) {
    off1_btn.drawButton(true);

    resetFunc();
  }
  rot();
}

#endif



void showmsgXY(int x, int y, int sz, const GFXfont *f, const char *msg)
{
  int16_t x1, y1;
  uint16_t wid, ht;
  tft.setFont(f);
  tft.setCursor(x, y);
  tft.setTextColor(BLACK);
  tft.setTextSize(sz);
  tft.print(msg);
}

void showmsgXY2(int x, int y, int sz, const GFXfont *f, const char *msg)
{
  int16_t x1, y1;
  uint16_t wid, ht;
  tft.setFont(f);
  tft.setCursor(x, y);
  tft.setTextColor(WHITE);
  tft.setTextSize(sz);
  tft.print(msg);
}

Here is my code. at the end of the loop, there is rot();
its the encoder part thats needs to show the value on the screen all the time. if I remove the rot();
the screen starts working and buttons start working.
if I add the rot(); under the "R-LEFT" button then everything works until I press R-LEFT button. Then it starts showing the encoder value and no buttons work anymore.
How can I fix this?
I tried something like:

void rot(void){
   static unsigned long nextReport = 0;
   if ((signed long)(millis() - nextReport) <=0 ) 
      return ;
   nextReport = millis() + 100; 
    encoder.tick();
    int newPos = encoder.getPosition() * 0.75;

    if (newPos < ROTARYMIN) {
      analogWrite(10, 0);
      analogWrite(11, 0);
      newPos = ROTARYMIN;

    } else if (newPos > ROTARYMAX) {
      analogWrite(10, 0);
      analogWrite(11, 0);
      newPos = ROTARYMAX;

    }

    if (lastPos != newPos) {

      Serial.println(newPos);
      Serial.println();
      lastPos = newPos;
      tft.setTextColor(GREEN, BLACK);
      tft.setTextSize(2);
      tft.setCursor(5, 120);
      tft.print(newPos);
      tft.print("         ");
    }
}

but with this, the encoder value does not change at all. everything is frozen.
tldr: The screen buttons need to be working and the encoder value has to refresh
at the moment it is bad to turn antenna because I press "motor turn" button, the antenna starts turning and I cannot stop it. It stops when encoder reads 360 degree.

//edit. also if someone know this mcufriend_kbv library then how can I change "round" buttons to square?
Like the button edges are round. I want to change them straight 90degree. Have not figured it out how to.

2

Does the trouble begin when You physically connect the last device or does the trouble begin when the code for the last device is included?
I suspect schematics are needed.

3

what? the encoder is connected to uno all the time.
The code is the problem. if encoder shows me data, nothing else is responding.
If I remove the encoder part from code, buttons start working...

4

It looks like the libraries are trying to use the same resource, timer, interrupt, .....

That would be outside my comfort zone but lets wait and see if a more knowíng helper steps in!

5

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