UTFT help!!! myGLCD.print(sensorValue); error when compiling

Other Hardware Displays
1

I am trying to get my tft to print simple analog inputs (raw values) 0-1023

I mimic some commands from a code that i have running with my other 16x2 display with <liquidCrystal.h library>

But the <utft.h> library dont seem to work the same way .

is there a different command than from the 16x2lcd <liquidCrystal.h> , when you want a tft display to print the analogRead ?

otherwise all the generic test codes is working properly

// UTFT_ViewFont (C)2012 Henning Karlsen
// web: http://www.henningkarlsen.com/electronics
//
// This program is a demo of the included fonts.
//
// This demo was made for modules with a screen resolution 
// of 320x240 pixels.
//
// This program requires the UTFT library.
//

#include <UTFT.h>

// Declare which fonts we will be using
extern uint8_t SmallFont[];
extern uint8_t BigFont[];
extern uint8_t SevenSegNumFont[];

// Uncomment the next line for Arduino 2009/Uno
UTFT myGLCD(QD_TFT180B,11,10,9,12,8);   // Remember to change the model parameter to suit your display module!

int sensorPin = A0;
int sensorValue  ;


void setup()
{
  pinMode(sensorPin , INPUT);
  myGLCD.InitLCD();

  myGLCD.clrScr();
}

void loop()
{
  sensorValue = analogRead(sensorPin);
  
  myGLCD.setColor(255,255,255);
  myGLCD.setBackColor(0,0,0);
  myGLCD.fillScr(0,0,0);

  myGLCD.setFont(SmallFont);
  myGLCD.print("SOIL MOISTURE:", LEFT , 3);
  
  myGLCD.print(sensorValue ,RIGHT, 3);
  



  
  

  while(1) {};
}

Error code:

UTFT_WORKING.ino: In function 'void loop()':
UTFT_WORKING.ino:42: warning: deprecated conversion from string constant to 'char*'
UTFT_WORKING:44: error: invalid conversion from 'int' to 'const char*'
UTFT_WORKING:44: error: initializing argument 1 of 'String::String(const char*)'
2

I would suggest that you have a look at the difference between the print, printNumI and printNumF functions.

The manual can be found here Electronics - Henning Karlsen

Cheers

3

Thank you.

Had already read the user manual several times , but, as the newbie i am , never thought that the print.NumF, was the solution.

What is the special function of "float" ?

When i google float , the only function i find described is that it can print values with decimal.
but , dont now what that has to do with my analog values, i would actually rather have the value without decimal.

well , anyway ,code is working now .

3 more sensors to add , so quit sure i will need help again.

thanks

4

Good to hear you got it working.

To quote from http://arduino.cc/en/Reference/Float#.Uxme_oUyy70

Floating-point numbers are often used to approximate analog and continuous values because they have greater resolution than integers.