Pulling my hair out over these dumb 'deprecated' errors! PLEASE HELP!!!

Projects Programming
1

Hi Guys,

All I'm trying to do is use the UTFT library to print a temperature reading from my MAX6675 thermocouple to a 5" UTFT screen using the UTFT.h library. Here is my code and the error I am getting:

// 5 Inch Screen Dimension: 800 x 480

#include <UTFT.h>
#include <UTouch.h>
#include <UTFT_Buttons.h>
#include <max6675.h>

extern uint8_t SmallFont[];
extern uint8_t BigFont[];
extern uint8_t Dingbats1_XL[];
extern uint8_t GroteskBold32x64[];
extern uint8_t hallfetica_normal[];

// GLOBAL VARIABLE DECLARATION
int thermoSO = 14;
int thermoCS = 15;
int thermoSCK = 16;

MAX6675 thermocouple(thermoSCK, thermoCS, thermoSO);
int vccPin = 17;
int gndPin = 18;

  
int xW, yW, xL, xR, yT, yB, margin;
int menuTemp, menuHumidity, menuSmoke, menuSettings, pressed_button, settingsColor, customColor1, customColor2, settingsPage, page = 1;
boolean ForC, DorN; // Fahrenheit or Celcius and Day or Night Settings
int countB; // border thickness

UTFT screen(CTE50,38,39,40,41);
UTouch touch(6,5,4,3,2);
UTFT_Buttons buttons(&screen, &touch);

// SPLASH PAGE

void splash() {
 margin = 20;
 xW = screen.getDisplayXSize(); // size of display
 yW = screen.getDisplayYSize();
 xL = margin; // size of background square
 xR = xW - margin; 
 yT = margin;
 yB = yW - margin; 
 screen.clrScr();
 screen.setColor(VGA_LIME);
 screen.fillRoundRect(xL, yT, xR, yB); 
 screen.setColor(VGA_BLACK);
 screen.setFont(GroteskBold32x64);
   for(countB = 1; countB < 5; countB++) {
   screen.drawRoundRect((xL - countB), (yT - countB), (xR + countB), (yB + countB));
   }
 screen.setBackColor(VGA_TRANSPARENT);
 screen.print("SMART STACK",CENTER,180);
 screen.setFont(hallfetica_normal);
 screen.print("THE SMART WAY TO BARBEQUE", CENTER, 290);
 screen.setColor(VGA_LIME);
 screen.setBackColor(VGA_BLACK);
 delay(2000);
}

void menuButtons() {
  buttons.setTextFont(hallfetica_normal);
  menuTemp = buttons.addButton(0,430,199,50, "TEMP");
  menuHumidity = buttons.addButton(201,430,199,50, "HUMIDITY");
  menuSmoke = buttons.addButton(401,430,199,50, "SMOKE");
  menuSettings = buttons.addButton(601,430,199,50, "SETTINGS");

  buttons.enableButton(menuTemp);
  buttons.enableButton(menuHumidity);
  buttons.enableButton(menuSmoke);
  buttons.enableButton(menuSettings);

  buttons.drawButtons();
}

// PAGE 1 - TEMP

  void page1() {
  screen.clrScr();  
  buttons.deleteAllButtons();
  menuButtons();
  screen.setFont(hallfetica_normal);
  screen.print("PIT 1", 15,15);
  screen.print("PIT 2", 15,235);
  screen.print("MEAT 1",690,15);
  screen.print("MEAT 2",690,235);
  screen.drawRoundRect(10,10,390,215);
  screen.drawRoundRect(10,230,390,420);
  screen.drawRoundRect(410,10,790,215);
  screen.drawRoundRect(410,230,790,420);
  screen.setFont(GroteskBold32x64);
  float myNum = 1.243;
  screen.print(myNum,125,90); // PIT 1
  screen.print("256.5",525,90); // PIT 2
  screen.print("189.5",125,295); // MEAT 1
  screen.print("192.5",525,295); // MEAT 2
  page = 1;
}

// PAGE 2 - HUMIDITY 

  void page2() {
  screen.clrScr();  
  buttons.deleteAllButtons();
  menuButtons();
  screen.setFont(hallfetica_normal);
  screen.print("PIT 1", 15,15);
  screen.print("PIT 2", 15,235);
  screen.print("MEAT 1",690,15);
  screen.print("MEAT 2",690,235);
  screen.drawRoundRect(10,10,390,215);
  screen.drawRoundRect(10,230,390,420);
  screen.drawRoundRect(410,10,790,215);
  screen.drawRoundRect(410,230,790,420);
  screen.setFont(GroteskBold32x64);
  screen.print("250.5",125,90); // PIT 1
  screen.print("256.5",525,90); // PIT 2
  screen.print("189.5",125,295); // MEAT 1
  screen.print("192.5",525,295); // MEAT 2
  page = 2;
}

// PAGE 3 - SMOKE

  void page3() {
  screen.clrScr();  
  screen.print("          SMOKE MONITOR",RIGHT, 10);
  menuButtons();
  page = 3;
}

// PAGE 4 - SETTINGS

  void page4() {
  screen.clrScr();  
  screen.print("          SETTINGS",RIGHT,10);
  menuButtons();
  screen.setFont(hallfetica_normal);
  screen.print("SELECT PRIMARY COLOR: ", 20,20);
  screen.print("SELECT DEFAULT SCREEN: ", 20,100);
  page = 4;
  
}

void setup() {
  extern uint8_t GroteskBold32x64[];
  screen.InitLCD();
  touch.InitTouch();
  screen.clrScr();
  
  screen.setFont(SmallFont);
  touch.setPrecision(PREC_MEDIUM);
  
  buttons.setTextFont(GroteskBold32x64);
  buttons.setSymbolFont(Dingbats1_XL);
splash();
  
  Serial.begin(9600);
  // use Arduino pins 
  pinMode(vccPin, OUTPUT); digitalWrite(vccPin, HIGH);
  pinMode(gndPin, OUTPUT); digitalWrite(gndPin, LOW);
  delay(500);

}

void loop() {
  screen.clrScr();
  screen.setFont(BigFont);
  //setButtonColors(Text,Inactive Button,Button Border, Button Pressed Border, Button Background)
  buttons.setButtonColors(VGA_BLACK, VGA_GRAY, VGA_BLACK, VGA_WHITE, VGA_LIME);
  menuButtons();
  
  while(1)
  {
  if(touch.dataAvailable() == true)
    {     
     pressed_button = buttons.checkButtons();
     switch (pressed_button) {
      case 0: page1();
     break;
      case 1: page2();
     break;
      case 2: page3();
     break;
      case 3: page4();
     break; 
     }
    }
  }
}

Here are the errors I'm getting:

SmartStack.ino: In function ‘void splash()’:
SmartStack.ino:52:39: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:54:55: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino: In function ‘void menuButtons()’:
SmartStack.ino:62:52: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:63:62: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:64:56: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:65:62: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]

SmartStack.ino:92:28: error: no matching function for call to ‘UTFT::print(float&, int, int)’
SmartStack.ino:92:28: note: candidates are:
In file included from SmartStack.ino:3:0:
/home/jdlever/sketchbook/libraries/UTFT/UTFT.h:215:8: note: void UTFT::print(char*, int, int, int)
   void print(char *st, int x, int y, int deg=0);
        ^
/home/jdlever/sketchbook/libraries/UTFT/UTFT.h:215:8: note:   no known conversion for argument 1 from ‘float’ to ‘char*’
/home/jdlever/sketchbook/libraries/UTFT/UTFT.h:216:8: note: void UTFT::print(String, int, int, int)
   void print(String st, int x, int y, int deg=0);
        ^
/home/jdlever/sketchbook/libraries/UTFT/UTFT.h:216:8: note:   no known conversion for argument 1 from ‘float’ to ‘String’
SmartStack.ino:93:30: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:94:31: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:95:31: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino: In function ‘void page2()’:
SmartStack.ino:106:30: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:107:31: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:108:31: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:109:32: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:115:30: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:116:30: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:117:31: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:118:31: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino: In function ‘void page3()’:
SmartStack.ino:126:51: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino: In function ‘void page4()’:
SmartStack.ino:135:45: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:138:47: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
SmartStack.ino:139:49: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]

I feel like I've tried everything and for the life of me can't get this #$@#$@#$@ thing to work!!!! DALGHLAHGLAHLGHAHLHAL!!!! Please Help!!

3

This error message is telling you that there's nothing in the UTFT library that can print a floating point number.

SmartStack.ino:92:28: error: no matching function for call to 'UTFT::print(float&, int, int)'

This is the problem:

 float myNum = 1.243;
  screen.print(myNum,125,90); // PIT 1

This should work:

 screen.print("1.243",125,90); // PIT 1

Pete

4

As Delta_G says, the warnings are just that. Warnings. Although not all warnings are safe to ignore, you can ignore these.

Pete

5

Is there a way to have the Arduino IDE only show you the errors and not the novel of warnings?

6

You can cast each const string to a char *

screen.print((char *)"SMART STACK",CENTER,180);

or you can use File|Preferences to switch off verbose output during compilation. But I don't recommend that. There are some warnings which actually indicate a programming error and they should not be ignored, otherwise the program will crash.

Pete

7

el_supremo:
This error message is telling you that there's nothing in the UTFT library that can print a floating point number.

SmartStack.ino:92:28: error: no matching function for call to 'UTFT::print(float&, int, int)'

This is the problem:

 float myNum = 1.243;

screen.print(myNum,125,90); // PIT 1




This should work:

screen.print("1.243",125,90); // PIT 1




Pete

And thanks for the help Pete, but still no luck :frowning:

8

I should probably mention I'm trying to assign a variable to the function from the MAX6675 library that pulls in the temperature (ie... double myT = thermocouple.readFahrenheit(); )

Now the UTFT library does have a function that allows you to print other things...like printNumI (integers) and printNumF (floats), but it doesn't look like it has anything specifically for double variables...which of course is what I think the thermocouple.readFahrenheit() function returns. So maybe if I create a variable that's a double and then some how convert that to a float...then I could (at least in theory) print the values using printNumF(myT, position, position)

I just don't know how to get it from a double to a float?

UPDATE: I was able to change the case from a double to an int, but still can't figure out how to convert the double to a float.

I was able to pull in the temp using this:

  double myT = thermocouple.readFahrenheit();
  int myTconversion = (int) myT;
  screen.printNumI(myTconversion,200,200); // PIT 1
9

I FINALLY FIGURED IT OUT!!!!! THANKS TO YOU FELLAS FOR HELPING GET ME ON THE RIGHT TRACK!!!!!!!!

  double myT = thermocouple.readFahrenheit();
  float myTconversion = (float) myT;
  screen.printNumF(myTconversion,2,120,100); // PIT 1

Turns out you needed to include the number of decimal points in the printNumF function call as the second variable :slight_smile:

YAy!!!!!!