/*  
 Test the tft.print() viz embedded tft.write() function

 This sketch used font 2, 4, 7
 
 Make sure all the display driver and pin comnenctions are correct by
 editting the User_Setup.h file in the TFT_eSPI library folder.

 Note that yield() or delay(0) must be called in long duration for/while
 loops to stop the ESP8266 watchdog triggering.

 #########################################################################
 ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
 #########################################################################
 */


#include <TFT_eSPI.h> // Graphics and font library for ST7735 driver chip
#include <SPI.h>

TFT_eSPI tft = TFT_eSPI();  // Invoke library, pins defined in User_Setup.h

#define TFT_GREY 0x5AEB // New colour

void setup(void) {
  tft.init();
  tft.setRotation(1);
}

void loop() {
  
  // Fill screen with grey so we can see the effect of printing with and without 
  // a background colour defined
  tft.fillScreen(TFT_GREY);
  
  // Set "cursor" at top left corner of display (0,0) and select font 2
  // (cursor will move to next line automatically during printing with 'tft.println'
  //  or stay on the line is there is room for the text with tft.print)
  tft.setCursor(0, 0, 2);
  // Set the font colour to be white with a black background, set text size multiplier to 1
  tft.setTextColor(TFT_WHITE,TFT_BLACK);  tft.setTextSize(1);
  // We can now plot text on screen using the "print" class
  tft.println("Hello World!");
  
  // Set the font colour to be yellow with no background, set to font 7
  tft.setTextColor(TFT_YELLOW); tft.setTextFont(2);
  tft.println(1234.56);
  
  // Set the font colour to be red with black background, set to font 4
  tft.setTextColor(TFT_RED,TFT_BLACK);    tft.setTextFont(4);
  tft.println((long)3735928559, HEX); // Should print DEADBEEF

  // Set the font colour to be green with black background, set to font 2
  tft.setTextColor(TFT_GREEN,TFT_BLACK);
  tft.setTextFont(2);
  tft.println("Groop");

  // Test some print formatting functions
  float fnumber = 123.45;
   // Set the font colour to be blue with no background, set to font 2
  tft.setTextColor(TFT_BLUE);    tft.setTextFont(2);
  tft.print("Float = "); tft.println(fnumber);           // Print floating point number
  tft.print("Binary = "); tft.println((int)fnumber, BIN); // Print as integer value in binary
  tft.print("Hexadecimal = "); tft.println((int)fnumber, HEX); // Print as integer number in Hexadecimal

  while(1) yield(); // We must yield() to stop a watchdog timeout.
}



