/*
 Font draw speed and flicker test, draws all numbers 0-999 in each font
 (0-99 in font 8)
 Average time in milliseconds to draw a character is shown in red
 A total of 2890 characters are drawn in each font (190 in font 8)
 
 Needs fonts 2, 4, 6, 7 and 8

 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 ILI9341 driver chip
#include <SPI.h>

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

unsigned long drawTime = 0;

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

void loop() {

  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);

  drawTime = millis();

  for (int i = 0; i < 1000; i++) {
    tft.drawNumber(i, 0, 0, 1);
  }

  drawTime = millis() - drawTime;

  tft.setTextColor(TFT_RED, TFT_BLACK);
  tft.drawFloat(drawTime / 2890.0, 3, 0, 80, 4);
  if (drawTime < 100) tft.drawString("Font 1 not loaded!", 0, 108, 2);
  
  delay(4000);
  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

  for (int i = 0; i < 1000; i++) {
    tft.drawNumber(i, 0, 0, 2);
  }

  drawTime = millis() - drawTime;

  tft.setTextColor(TFT_RED, TFT_BLACK);
  tft.drawFloat(drawTime / 2890.0, 3, 0, 80, 4);
  if (drawTime < 200) tft.drawString("Font 2 not loaded!", 0, 108, 2);
  
  delay(4000);
  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

  for (int i = 0; i < 1000; i++) {
    tft.drawNumber(i, 0, 0, 4);
  }

  drawTime = millis() - drawTime;

  tft.setTextColor(TFT_RED, TFT_BLACK);
  tft.drawFloat(drawTime / 2890.0, 3, 0, 80, 4);
  if (drawTime < 200) tft.drawString("Font 4 not loaded!", 0, 108, 2);
  
  delay(4000);
  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

  for (int i = 0; i < 1000; i++) {
    yield(); tft.drawNumber(i, 0, 0, 6);
  }

  drawTime = millis() - drawTime;

  tft.setTextColor(TFT_RED, TFT_BLACK);
  tft.drawFloat(drawTime / 2890.0, 3, 0, 80, 4);
  if (drawTime < 200) tft.drawString("Font 6 not loaded!", 0, 108, 2);
  
  delay(4000);
  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

  for (int i = 0; i < 1000; i++) {
    yield(); tft.drawNumber(i, 0, 0, 7);
  }

  drawTime = millis() - drawTime;

  tft.setTextColor(TFT_RED, TFT_BLACK);
  tft.drawFloat(drawTime / 2890.0, 3, 0, 80, 4);
  if (drawTime < 200) tft.drawString("Font 7 not loaded!", 0, 108, 2);
  
  delay(4000);
  tft.fillScreen(TFT_BLACK);
  tft.setTextColor(TFT_WHITE, TFT_BLACK);
    drawTime = millis();

  for (int i = 0; i < 100; i++) {
    yield(); tft.drawNumber(i, 0, 0, 8);
  }

  drawTime = millis() - drawTime;

  tft.setTextColor(TFT_RED, TFT_BLACK);
  tft.drawFloat(drawTime / 190.0, 3, 0, 80, 4);
  if (drawTime < 200) tft.drawString("Font 8 not loaded!", 0, 108, 2);
  
  delay(4000);
}