Print to TFT display temperature sensor DS18b20 readings, not to serial monitor.

Hi,

I have been unable to print the DS18b20 temerature sensor to the ST7735 TFT screen from Adafruit. 128 x 160. Everything prints fine to the serial monitor.

I had expected that the following section calling up the temperature in Celsius would be able to print? Any help will be appreciated.

{
  sensors.requestTemperatures(); // Send the command to get temperatures.
  myTemp0 = (sensors.getTempCByIndex(0));
  myTemp1 = (sensors.getTempCByIndex(1));
 {

The following is as far as I have been able to get.

#include <SPI.h>
#include <TFT.h>

// Libraries for DS1820 and Onewire
#include <OneWire.h>
#include <DallasTemperature.h>


//You can use any (4 or) 5 pins  
//#define sclk 4 
//#define mosi 5 
#define cs 6 // pin definition for the Uno
#define dc 7 // pin definition for the Uno
#define rst 8  // pin definition for the Uno
// you can also connect this to the Arduino reset

float myTemp0;
float myHighTemp0;
float myLowTemp0 = 50;
float myTemp1;
float myHighTemp1;
float myLowTemp1 = 50;

OneWire oneWire(2); // Setup onewire instance to communicate with devices.
DallasTemperature sensors(&oneWire);

// create an instance of the library
TFT TFTscreen = TFT(cs, dc, rst);

void setup()
{
   // Put this line at the beginning of every sketch that uses the GLCD:
  TFTscreen.begin();
  // clear the screen with a black background
  TFTscreen.background(0, 0, 255);
    // write the static text to the screen
  // set the font color to white
  TFTscreen.stroke(0,0,0);
  // set the font size
  TFTscreen.setTextSize(2);
  // write the text to the top left corner of the screen
  TFTscreen.text("Temperatures :\n ",10,0);
  // set the font color to white
  TFTscreen.stroke(50,50,50);
  // set the font size
  TFTscreen.setTextSize(1);
  // write the text to the top left corner of the screen
  TFTscreen.text("Fridge Temperature :\n ",10,20);
  // write the text to the top left corner of the screen
  TFTscreen.text("Pot One Temperature :\n ",10,30);
  // ste the font size very large for the loop
  TFTscreen.setTextSize(1); 
  
  
 sensors.begin(); 
 Serial.begin(9600);
}

void loop()
{
  readtemp(); // Read the temperature.
  serialprint(); // Write the results to the serial monitor.
  
}
  
void readtemp() // call sensors.requestTemperatures() to issue
                // a global temp request to all devices on the bus.
{
  sensors.requestTemperatures(); // Send the command to get temperatures.
  myTemp0 = (sensors.getTempCByIndex(0));
  myTemp1 = (sensors.getTempCByIndex(1));
 {
  TFTscreen.stroke(255,255,255);
  TFTscreen.setTextSize(1);
  TFTScreen.print(myTemp0);
 }

  // Set High or Low Temp.
  if (myTemp0 < myLowTemp0) 
  {
    myLowTemp0 = myTemp0;
  }
  if (myTemp0 > myHighTemp0)
  {
    myHighTemp0 = myTemp0;
  }
 if (myTemp1 < myLowTemp1) 
  {
    myLowTemp1 = myTemp1;
  }
  if (myTemp1 > myHighTemp1)
  {
    myHighTemp1 = myTemp1;
  }
}

void serialprint()
{
Serial.print("Current Fridge Temp 0: ");  
Serial.print(myTemp0);
Serial.print("C");
Serial.print(" Lowest Temp 0: ");
Serial.print(myLowTemp0);
Serial.print("C");
Serial.print(" Highest Temp 0: ");
Serial.print(myHighTemp0);
Serial.print("C");
Serial.print("\t\t");
Serial.print(" Current Pot Plant Temp 1: ");  
Serial.print(myTemp1);
Serial.print("C");
Serial.print(" Lowest Temp 1: ");
Serial.print(myLowTemp1);
Serial.print("C");
Serial.print(" Highest Temp 1: ");
Serial.print(myHighTemp1);
Serial.println("C");
delay(2500);

}

Regards,

Wayne