ILI9341-Based Digital Clock Project

A while ago, the clock/time display on our microwave started having problems; it’s a 7-segment vacuum-flourescent display, and a couple of the segments a no longer lighting up. Instead of “End”, we now see “Erd”, and the clock is getting harder to read. The microwave itself is still running fine, but because this particular display is our primary time display in the house (aside from our phones), not having a good clock display is annoying.

I investigated getting the appropriate repair part for the display, but that module costs more than the entire microwave did originally, so that didn’t seem like a practical idea. And while I can get a cheap stick-on clock for just a few bucks, what’s the fun in that?

So, I’m in the middle of a design project to build a digital clock to replace the one on the microwave. At first I built up a clock using a Teensy 3.2 and one of my spare Nokia 5110 LCD displays, but that turned out not to be very practical, as the display is basically unreadable from more than just a few feet away, with or without backlighting.

So, I started looking around for better displays, and ran across the ILI9341 TFT display with a touch-sensitive screen. Even better, this was available with Teensy-optimized drivers, as shown here – what a deal! I started thinking that with a touch-sensitive screen, I might be able to implement some on-screen buttons for setting the time, which would be way cool!

So, I ordered two of these displays from PJRC, and started working on the design. Here’s the initial schematic

Here’s my initial breadboard setup:

Teensy 3.2 in foreground, Adafruit DS3231 RTC in background, ILI9341 TFT touch display

I originally used the Arial proportional font provided by the library, but I discovered that it produced bad artifacts after a few hours, as shown below: The only way to avoid these artifacts is to refresh the entire screen on every pass through the 1-second timing loop, which causes a very annoying ‘blink’. Eventually I figured this out, and changed to a non-proportional font, as shown below;

Non-proportional font looks worse, but doesn’t suffer from artifacts

Once I got everything working (well, except for the touch screen stuff that I plan to add later), I fabricated a nice box using Open SCAD and TinkerCad, and made a more permanent version using a half-sized ‘perma-proto’ board, as shown below

Here’s the more-or-less final schematic

7 March 2021 Update:

After a long and somewhat agonizing journey, I finally got the touch-screen stuff working, so I can now adjust the time on my digital clock using on-screen touch-sensitive controls. Here’s the updated schematic:

The only real difference between this one and the previous schematic is the T_IRQ line is no longer connected; the Teensy-optimized XPT2046_Touchscreen.h/cpp library doesn’t use it.

Here’s a short video showing how the touch-screen enabled time/date adjustment feature works:

Although I hope to clean up this code considerably in the future, I include it here in it’s entirety in it’s current state

/*
    Name:       Teensy_LCDClockV3.ino
    Created:	3/2/2021 1:37:22 PM
    Author:     FRANKNEWXPS15\Frank

    This version adds date/time adjustment using touch screen
*/

#include <XPT2046_Touchscreen.h>
#include <ILI9341_t3n.h>
#include <Wire.h>
#include "RTClib.h"
#include "elapsedMillis.h"
#include "CustomBox.h"

#define N0_DIAGNOSTICS
//****************************************************************************
// Settings and objects
//****************************************************************************

#pragma region DISPLAY_PIN_ASSIGNMENTS
//02/15/21 pin assignments from https://www.pjrc.com/store/display_ili9341_touch.html
#define TFT_DC  9
#define TFT_CS 10
#define TFT_RST 7
#define TFT_SCK 13
#define TFT_MISO 12
#define TFT_MOSI 11
#define TOUCH_CS  8
#pragma endregion DISPLAY_PIN_ASSIGNMENTS

XPT2046_Touchscreen ts(TOUCH_CS);
ILI9341_t3n tft = ILI9341_t3n(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCK, TFT_MISO);
elapsedMillis mSecSinceLastClockUpdate;
const int CLOCK_UPDATE_MSEC = 1000;

#pragma region DISP_AND_ADJ_BOX_PARAMETERS
// Size of the color selection boxes and the paintbrush size
#define MAX_DISPLAY_X 240
#define MAX_DISPLAY_Y 320
#define SCREEN_ORIENTATION_1

#define TS_MINX 600
#define TS_MINY 600
#define TS_MAXX 3758
#define TS_MAXY 3612

const int PLUSBOX_X = 20;
const int PLUSBOX_Y = 180;
const int PLUSBOX_WIDTH = 50;
const int PLUSBOX_HEIGHT = 50;
const int PLUSBOX_COLOR = ILI9341_BLUE;

const int MINUSBOX_X = 120;
const int MINUSBOX_Y = 180;
const int MINUSBOX_WIDTH = 50;
const int MINUSBOX_HEIGHT = 50;
const int MINUSBOX_COLOR = ILI9341_YELLOW;

const String nextstr = "NEXT";
const int nextstr_width = 70;
const int nextstr_height = 20;
const int NEXTBOX_X = 220;
const int NEXTBOX_Y = 180;
const int NEXTBOX_COLOR = ILI9341_GREEN;
const int NEXTBOX_WIDTH = 100;
const int NEXTBOX_HEIGHT = 50;

const int TIME_BOX_X = 0;
const int TIME_BOX_Y = 98;
const int TIME_BOX_WIDTH = 350;
const int TIME_BOX_HEIGHT = 74;

const int DATE_BOX_X = 0;
const int DATE_BOX_Y = 0;
const int DATE_BOX_WIDTH = 320;
const int DATE_BOX_HEIGHT = 30;

//03/05/21 used to hide adjustment boxes
const int ALL_ADJ_BOXES_WIDTH = NEXTBOX_X + NEXTBOX_WIDTH;
const int ALL_ADJ_BOXES_HEIGHT = 50;

const int TIME_HIGHLIGHT_BOX_WIDTH = 75;
const int TIME_HIGHLIGHT_BOX_HEIGHT = 5;
const int TIME_HIGHLIGHT_BOX_YLOC = 90;
const int ALL_TIME_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

const int DATE_HIGHLIGHT_BOX_WIDTH = 35;
const int DATE_HIGHLIGHT_BOX_HEIGHT = 5;
const int DATE_HIGHLIGHT_BOX_YLOC = 30;
const int ALL_DATE_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

CustomBox PlusBox(PLUSBOX_X, PLUSBOX_Y, PLUSBOX_WIDTH, PLUSBOX_HEIGHT, PLUSBOX_COLOR);
CustomBox MinusBox(MINUSBOX_X, MINUSBOX_Y, MINUSBOX_WIDTH, MINUSBOX_HEIGHT, MINUSBOX_COLOR);
CustomBox NextBox(NEXTBOX_X, NEXTBOX_Y, NEXTBOX_WIDTH, NEXTBOX_HEIGHT, NEXTBOX_COLOR);

CustomBox HourHighlightBox(0, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox MinuteHighlightBox(100, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox SecondHighlightBox(210, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox MonthHighlightBox(70, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox DayHighlightBox(120, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox YearHighlightBox(180, DATE_HIGHLIGHT_BOX_YLOC, 2*DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox TimeBox(TIME_BOX_X, TIME_BOX_Y, TIME_BOX_WIDTH, TIME_BOX_HEIGHT, ILI9341_BLACK);
CustomBox DateBox(DATE_BOX_X, DATE_BOX_Y, DATE_BOX_WIDTH, DATE_BOX_HEIGHT, ILI9341_BLACK);

enum AdjustmentState
{
  ADJ_NONE = 0,
  ADJ_HOUR,
  ADJ_MIN,
  ADJ_SEC,
  ADJ_DAYOFWEEK,
  ADJ_MONTH,
  ADJ_DAY,
  ADJ_YEAR
};

int aDaysInMonth[] = { 31,28,31,30,31,30,31,31,30,31,30,31 };

AdjustmentState CurAdjState = ADJ_NONE;


const int TOUCH_TIMEOUT_MSEC = 5000; //reverts to regular display if no further touch input
elapsedMillis mSecSinceLastTouch; //timer for touch timout
#pragma endregion Display & Adj Box Parameters


#pragma region RTC Support
#define FORCE_RTC_TO_LAST_COMPILE_TIME //uncomment to manually set RTC to last compile time

RTC_DS3231 rtc;

char daysOfTheWeek[7][12] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
DateTime now, lastTime;
char buffer[100];
int lasthour = 0; //02/15/21 added to refresh screen on the hour

struct tStamp
{
  unsigned long mSec;
  byte RTC_Status;
};

#define DS3231_ADDRESS 0x68   ///< I2C address for DS3231
#define DS3231_STATUSREG 0x0F ///< Status register

#define RTCStatArraySize 10
#define RTCStatTime_IntervalMsec 100
tStamp RTCStatArray[RTCStatArraySize];


#pragma endregion RTC Support

void setup()
{
  Serial.begin(9600);
  delay(3000);

  Serial.println("Teensy 3.2 TFT Clock Program");

#pragma region DISPLAY INITIALIZATION
  Serial.println("Initializing TFT display");

  tft.begin();
  // Note: you can now set the SPI speed to any value
  // the default value is 30Mhz, but most ILI9341 displays
  // can handle at least 60Mhz and as much as 100Mhz
  //  tft.setClock(60000000);
  tft.fillScreen(ILI9341_BLACK);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.setRotation(1);
#pragma endregion region DISPLAY INITIALIZATION

#pragma region TFT DIAGNOSTICS
#ifndef N0_DIAGNOSTICS

  // read diagnostics (optional but can help debug problems)
  uint8_t x = tft.readcommand8(ILI9341_RDMODE);
  Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDMADCTL);
  Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDPIXFMT);
  Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDIMGFMT);
  Serial.print("Image Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDSELFDIAG);
  Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX);

  Serial.println(F("Benchmark                Time (microseconds)"));

  Serial.print(F("Screen fill              "));
  Serial.println(testFillScreen());
  delay(200);

  Serial.print(F("Text                     "));
  Serial.println(testText());
  delay(600);

  Serial.print(F("Proportional Text        "));
  Serial.println(testProportionalText());
  delay(600);

  Serial.print(F("Lines                    "));
  Serial.println(testLines(ILI9341_CYAN));
  delay(200);

  Serial.print(F("Horiz/Vert Lines         "));
  Serial.println(testFastLines(ILI9341_RED, ILI9341_BLUE));
  delay(200);

  Serial.print(F("Rectangles (outline)     "));
  Serial.println(testRects(ILI9341_GREEN));
  delay(200);

  Serial.print(F("Rectangles (filled)      "));
  Serial.println(testFilledRects(ILI9341_YELLOW, ILI9341_MAGENTA));
  delay(200);

  Serial.print(F("Circles (filled)         "));
  Serial.println(testFilledCircles(10, ILI9341_MAGENTA));

  Serial.print(F("Circles (outline)        "));
  Serial.println(testCircles(10, ILI9341_WHITE));
  delay(200);

  Serial.print(F("Triangles (outline)      "));
  Serial.println(testTriangles());
  delay(200);

  Serial.print(F("Triangles (filled)       "));
  Serial.println(testFilledTriangles());
  delay(200);

  Serial.print(F("Rounded rects (outline)  "));
  Serial.println(testRoundRects());
  delay(200);

  Serial.print(F("Rounded rects (filled)   "));
  Serial.println(testFilledRoundRects());
  delay(200);

  Serial.println(F("Done!"));
#endif // !N0_DIAGNOSTICS
#pragma endregion region TFT DIAGNOSTICS

#pragma region RTC_SETUP
  DateBox.Draw(&tft); //erase previous text
  tft.setCursor(0, 0);
  Serial.println("Initializing RTC...");
  tft.println("Initializing RTC...");
  delay(1000);

  if (!rtc.begin())
  {
    DateBox.Draw(&tft); //erase previous text
    tft.setCursor(0, 0);
    Serial.println("Couldn't find RTC");
    tft.println("Couldn't find RTC");
    while (1);
  }

  bool lp = rtc.lostPower();
  Serial.print("lostPower() reports "); Serial.println(lp);
  DateBox.Draw(&tft); //erase previous text
  tft.setCursor(0, 0);
  tft.printf("lostPower() = %d\n", lp);
  delay(1000);
  if (rtc.lostPower())
  {
    Serial.println("RTC lost power.  Setting RTC to last compile time");
    DateBox.Draw(&tft); //erase previous text
    tft.setCursor(0, 0);
    tft.println("RTC lost power.  Setting RTC to last compile time");

    // following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

#ifdef FORCE_RTC_TO_LAST_COMPILE_TIME
  Serial.println("Forcing RTC to last compile time");
  // following line sets the RTC to the date & time this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
#endif // 

  //DateTime now = rtc.now();
  now = rtc.now();
  //char buffer[100];
  memset(buffer, '\0', 100);
  GetDayDateTimeStringFromDateTime(now, buffer);
  Serial.println("Retrieving Date/Time from RTC....");
  Serial.print("Date String = "); Serial.println(buffer);
#pragma endregion RTC_SETUP


  //DEBUG!!
    //tft.println("Setting time to just before midnight");
    //rtc.adjust(DateTime(2021, 02, 13, 00, 59, 45));
  //DEBUG!!

    //02/15/21 needed detect hour changes for screen refresh
  now = rtc.now();
  lasthour = now.hour();
  mSecSinceLastClockUpdate = 0; //used to space out clock updates in loop()
}


void loop(void)
{

  //Serial.printf("%lu: mSecSinceLastClockUpdate = %lu\n", millis(), (long int)mSecSinceLastClockUpdate);
  delay(100);

  //see if there is a touch anywhere
  if (ts.touched())
  {
    mSecSinceLastTouch = 0; //reset the timeout watchdog

    while (mSecSinceLastTouch < TOUCH_TIMEOUT_MSEC)
    {
      //Serial.printf("mSecSinceLastTouch = %lu\n", (unsigned long int)mSecSinceLastTouch);
      
      TS_Point Tp = ts.getPoint();// Retrieve the touch point
      if (Tp.z > 1000)
      {
        mSecSinceLastTouch = 0; //reset the timeout watchdog
        TS_Point Dp = GetTouchPointInDisplayCoords(Tp);

        CurAdjState = (AdjustmentState)AdjustTimeAndDate(Dp);
        //Serial.printf("Tp.z = %d: AdjustTimeAndDate(%d, %d) returns %d\n", Tp.z, Dp.x, Dp.y, (int)CurAdjState);

        if (CurAdjState > ADJ_NONE)
        {
          ShowLongTimeDisplay();
          ShowAdjButtons();
        }
      }
    }

    HideButtons();
    HideHighlightBars();
    ShowNormalTimeDisplay();
    ShowDateDisplay();
    CurAdjState = ADJ_NONE;

    mSecSinceLastClockUpdate = 0;
  }


  if (mSecSinceLastClockUpdate > CLOCK_UPDATE_MSEC)
  {
    mSecSinceLastClockUpdate -= CLOCK_UPDATE_MSEC;
    now = rtc.now();
    
    ShowDateDisplay(); //Display day and date

    //Display time
    if (CurAdjState > ADJ_NONE)
    {
      ShowLongTimeDisplay();
    }
    else
    {
      ShowNormalTimeDisplay();
    }
  }
}

#pragma region DATE_TIME_FUNCTIONS
void GetDayDateTimeStringFromDateTime(DateTime dt, char* bufptr)
{
  int mydayofweek = dt.dayOfTheWeek();
  //mydayofweek = (mydayofweek < 0) ? 0 : mydayofweek; //guard for return of 0 from weekday()
  int myday = dt.day();
  int mymonth = dt.month();
  int myyear = dt.year();
  int myhour = dt.hour();
  int mymin = dt.minute();
  int mysec = dt.second();
  char* dayofweek = (char*)daysOfTheWeek[mydayofweek];

  sprintf(bufptr, "%s %4d/%02d/%02d at %02d:%02d:%02d", dayofweek, mymonth, myday, myyear, myhour, mymin, mysec);
}


void HourStringFromDateTime(DateTime dt, char* bufptr)
{
  int hourval = dt.hour();
  if (hourval > 12)
  {
    hourval -= 12;
  }

  //sprintf(bufptr, "%02d", hourval);
  sprintf(bufptr, "%d", hourval);
}

void MinuteStringFromDateTime(DateTime dt, char* bufptr)
{
  sprintf(bufptr, "%02d", dt.minute());
}
#pragma endregion DATE_TIME_FUNCTIONS

AdjustmentState AdjustTimeAndDate(TS_Point Dp)
{
  AdjustmentState adjstate = ADJ_NONE;
  DateTime newtime;
  DateTime now = rtc.now();
  //int new_hour, new_minute, new_month, new_day, new_year;
  int new_hour, new_minute, new_month, new_day;

  //Serial.printf("In GetCurAdjState with CurAdjState = %d, at point (%d,%d)\n", CurAdjState, Dp.x, Dp.y);

  switch (CurAdjState)
  {
  case ADJ_NONE:
    if (TimeBox.TouchHit(Dp.x, Dp.y))
    {
      adjstate = ADJ_HOUR; //always start with hour
      ShowHighlightBar(ADJ_HOUR);
    }
    else if (DateBox.TouchHit(Dp.x, Dp.y))
    {
      adjstate = ADJ_MONTH; //always start with month
      ShowHighlightBar(ADJ_MONTH);
    }
    break;
  case ADJ_HOUR:
    Serial.print("In GetCurAdjState ADJ_HOUR case\n");
    adjstate = ADJ_HOUR;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_hour = now.hour() + 1;
      if (new_hour >= 24)
      {
        new_hour -= 24;
      }
      newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_hour = now.hour() - 1;
      if (new_hour < 0)
      {
        new_hour += 24;
      }
      newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_MIN;
      ShowHighlightBar(ADJ_MIN);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_MIN:
    Serial.print("In GetCurAdjState ADJ_MIN case\n");
    adjstate = ADJ_MIN;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_minute = now.minute() + 1;
      if (new_minute >= 60)
      {
        new_minute = 0;
      }

      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), new_minute, now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute() - 1);
      Serial.printf("ADJ_HOUR case in DoMinusOp().  Decrementing Hour Value\n");
      Serial.printf("Old time is %d:%d:%d:%d\n", now.day(), now.month(), now.year(), now.hour());
      Serial.printf("New time is %d:%d:%d:%d\n", newtime.day(), newtime.month(), newtime.year(), newtime.hour());
      rtc.adjust(newtime);
      Serial.printf("RTC now set to %d:%d:%d:%d\n", now.day(), now.month(), now.year(), now.hour());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_SEC;
      ShowHighlightBar(ADJ_SEC);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_SEC:
    Serial.print("In GetCurAdjState ADJ_SEC case\n");
    adjstate = ADJ_SEC;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);
      Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);
      Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_HOUR;
      ShowHighlightBar(ADJ_HOUR);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_DAYOFWEEK:
    break;
  case ADJ_MONTH:
    Serial.print("In GetCurAdjState ADJ_MONTH case\n");
    adjstate = ADJ_MONTH;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_month = now.month() + 1;
      if (new_month > 12)
      {
        new_month -= 12;
      }
      newtime = DateTime(now.year(), new_month, now.day(), now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_month = now.month() - 1;
      new_month = (new_month <= 0) ? 12 : new_month;
      newtime = DateTime(now.year(), new_month, now.day(), now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_DAY;
      ShowHighlightBar(ADJ_DAY);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_DAY:
    Serial.print("In GetCurAdjState ADJ_DAY case\n");
    adjstate = ADJ_DAY;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_day = AdjustDayValue(now.month(), now.day() + 1); //not all months have same number of days
      newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_day = now.day() - 1;
      new_day = (new_day <= 0) ? aDaysInMonth[now.month() - 1] : new_day;
      newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_YEAR;
      ShowHighlightBar(ADJ_YEAR);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_YEAR:
    Serial.print("In GetCurAdjState ADJ_YEAR case\n");
    adjstate = ADJ_YEAR;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      newtime = DateTime(now.year() + 1, now.month(), now.day(), now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      newtime = DateTime(now.year() - 1, now.month(), now.day(), now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_MONTH;
      ShowHighlightBar(ADJ_MONTH);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  default:
    break;
  }

  //Serial.printf("AdjustTimeAndDate(%d, %d) returns %d\n", Dp.x, Dp.y, (int)adjstate);
  return adjstate ;
}

#pragma region Helper Functions
TS_Point GetTouchPointInDisplayCoords(TS_Point Tp)
{
  //Purpose:  Retrieve a touch point in display coordinate system
  //Inputs:
  //  Rotation value
  //  Mapping values
  //  TS_Point from touch chip
  //Outputs:
  //  TS_Point object containing touch (X,Y) in display coordinates
  //Plan:
  //  Step1: Retrieve touch point from touch chip
  //  Step2: Map to display coordinates taking rotation into account

//Step1: Retrieve touch point from touch chip
  //TS_Point Tp = ts.getPoint();
  TS_Point Dp;
  //Step2: Map to display coordinates taking rotation into account
#ifdef SCREEN_ORIENTATION_1
  Dp.x = map(Tp.x, TS_MAXX, TS_MINX, 0, tft.width());
  Dp.y = map(Tp.y, TS_MAXY, TS_MINY, 0, tft.height());
#else
#endif

  ////DEBUG!!
  //Serial.printf(" GetTouchPointInDisplayCoords: %lu\t%d\t%d\t%d\t%d\t%d\n",
  //  millis(), Tp.x, Tp.y, Tp.z, Dp.x, Dp.y);
  ////DEBUG!!

  return Dp;
}

void ShowAdjButtons()
{
  PlusBox.Draw(&tft, '+', ILI9341_BLACK);
  MinusBox.Draw(&tft, '-', ILI9341_BLACK);

  //03/04/21 getTextBounds() reports wrong info - use 70w x 20 tall
  int txt_x = NEXTBOX_X + round((float)(NEXTBOX_WIDTH / 2.)) - round((float)(70 / 2.));
  int txt_y = NEXTBOX_Y + round((float)(NEXTBOX_HEIGHT / 2.)) - round((float)(20 / 2.));
  tft.setCursor(txt_x, txt_y);
  tft.setTextSize(3);
  tft.setTextColor(ILI9341_BLACK);
  String boxstr = "NEXT";
  NextBox.Draw(&tft);
  tft.print(boxstr);
}

void HideButtons()
{
  PlusBox.Draw(&tft, ILI9341_BLACK);
  MinusBox.Draw(&tft, ILI9341_BLACK);
  NextBox.Draw(&tft, ILI9341_BLACK);
}

void ShowNormalTimeDisplay()
{
  //Serial.printf("In ShowNormalTimeDisplay\n");
  now = rtc.now();
  tft.setCursor(0, 100);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(10);
  TimeBox.Draw(&tft);
  tft.setCursor(0, 100);
  int hournum = now.hour();

  //guard against 1259->1300 && 2359->0000 transitions
  if (hournum > 12)
  {
    hournum -= 12;
  }
  else if (hournum == 0)
  {
    hournum += 12;
  }

  hournum = (hournum > 12) ? hournum - 12 : hournum;

  tft.printf("%2d:%02d", hournum, now.minute());
}

void ShowLongTimeDisplay()
{
  //Serial.printf("In ShowLongTimeDisplay\n");
  now = rtc.now();
  tft.setCursor(0, 100);
  tft.setTextColor(ILI9341_RED);
  //tft.setTextSize(10);
  tft.setTextSize(6);
  tft.fillRect(0, 98, 350, 74, ILI9341_BLACK);
  //tft.fillRect(0, 98, 350, 74, ILI9341_YELLOW);
  tft.setCursor(0, 100);
  int hournum = now.hour();

  //guard against 1259->1300 && 2359->0000 transitions
  if (hournum > 12)
  {
    hournum -= 12;
  }
  else if (hournum == 0)
  {
    hournum += 12;
  }

  hournum = (hournum > 12) ? hournum - 12 : hournum;

  tft.printf("%2d:%02d:%02d", hournum, now.minute(), now.second());
}


void ShowHighlightBar(AdjustmentState adjstate)
{
  switch (adjstate)
  {
  case ADJ_NONE:
    Serial.printf("ADJ_NONE case in ShowHighlightBox()\n");
    HideHighlightBars();
    break;
  case ADJ_HOUR:
    HideHighlightBars();
    HourHighlightBox.Draw(&tft);
    break;
  case ADJ_MIN:
    HideHighlightBars();
    MinuteHighlightBox.Draw(&tft);
    break;
  case ADJ_SEC:
    HideHighlightBars();
    SecondHighlightBox.Draw(&tft);
    break;
  case ADJ_DAYOFWEEK:
    break;
  case ADJ_MONTH:
    HideHighlightBars();
    MonthHighlightBox.Draw(&tft);
    break;
  case ADJ_DAY:
    HideHighlightBars();
    DayHighlightBox.Draw(&tft);
    break;
  case ADJ_YEAR:
    HideHighlightBars();
    YearHighlightBox.Draw(&tft);
    break;
  default:
    break;
  }
}

void HideHighlightBars()
{
  tft.fillRect(0, DATE_HIGHLIGHT_BOX_YLOC, ALL_DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);
  tft.fillRect(0, TIME_HIGHLIGHT_BOX_YLOC, ALL_TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);
}

void ShowDateDisplay()
{
  DateTime now = rtc.now();
  DateBox.Draw(&tft);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setCursor(0, 0);
  tft.setTextSize(3);
  tft.printf("%s %02d/%02d/%02d\n",
    daysOfTheWeek[now.dayOfTheWeek()], now.month(), now.day(), now.year());
}

int AdjustDayValue(int month, int day)
{
  if (day > aDaysInMonth[month-1])
  {
    Serial.printf("%d is greater than max days (%d) for this month - setting to 1\n", day, aDaysInMonth[month-1] );
    return 1;
  }
  else
  {
    return day;
  }
}
#pragma endregion Helper Functions

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Name: Teensy_LCDClockV3.ino

Created: 3/2/2021 1:37:22 PM

Author: FRANKNEWXPS15\Frank

This version adds date/time adjustment using touch screen

#include <XPT2046_Touchscreen.h>

#include <ILI9341_t3n.h>

#include <Wire.h>

#include "RTClib.h"

#include "elapsedMillis.h"

#include "CustomBox.h"

#define N0_DIAGNOSTICS

//****************************************************************************

// Settings and objects

//****************************************************************************

#pragma region DISPLAY_PIN_ASSIGNMENTS

//02/15/21 pin assignments from https://www.pjrc.com/store/display_ili9341_touch.html

#define TFT_DC 9

#define TFT_CS 10

#define TFT_RST 7

#define TFT_SCK 13

#define TFT_MISO 12

#define TFT_MOSI 11

#define TOUCH_CS 8

#pragma endregion DISPLAY_PIN_ASSIGNMENTS

XPT2046_Touchscreen ts(TOUCH_CS);

ILI9341_t3n tft = ILI9341_t3n(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCK, TFT_MISO);

elapsedMillis mSecSinceLastClockUpdate;

const int CLOCK_UPDATE_MSEC = 1000;

#pragma region DISP_AND_ADJ_BOX_PARAMETERS

// Size of the color selection boxes and the paintbrush size

#define MAX_DISPLAY_X 240

#define MAX_DISPLAY_Y 320

#define SCREEN_ORIENTATION_1

#define TS_MINX 600

#define TS_MINY 600

#define TS_MAXX 3758

#define TS_MAXY 3612

const int PLUSBOX_X = 20;

const int PLUSBOX_Y = 180;

const int PLUSBOX_WIDTH = 50;

const int PLUSBOX_HEIGHT = 50;

const int PLUSBOX_COLOR = ILI9341_BLUE;

const int MINUSBOX_X = 120;

const int MINUSBOX_Y = 180;

const int MINUSBOX_WIDTH = 50;

const int MINUSBOX_HEIGHT = 50;

const int MINUSBOX_COLOR = ILI9341_YELLOW;

const String nextstr = "NEXT";

const int nextstr_width = 70;

const int nextstr_height = 20;

const int NEXTBOX_X = 220;

const int NEXTBOX_Y = 180;

const int NEXTBOX_COLOR = ILI9341_GREEN;

const int NEXTBOX_WIDTH = 100;

const int NEXTBOX_HEIGHT = 50;

const int TIME_BOX_X = 0;

const int TIME_BOX_Y = 98;

const int TIME_BOX_WIDTH = 350;

const int TIME_BOX_HEIGHT = 74;

const int DATE_BOX_X = 0;

const int DATE_BOX_Y = 0;

const int DATE_BOX_WIDTH = 320;

const int DATE_BOX_HEIGHT = 30;

//03/05/21 used to hide adjustment boxes

const int ALL_ADJ_BOXES_WIDTH = NEXTBOX_X + NEXTBOX_WIDTH;

const int ALL_ADJ_BOXES_HEIGHT = 50;

const int TIME_HIGHLIGHT_BOX_WIDTH = 75;

const int TIME_HIGHLIGHT_BOX_HEIGHT = 5;

const int TIME_HIGHLIGHT_BOX_YLOC = 90;

const int ALL_TIME_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

const int DATE_HIGHLIGHT_BOX_WIDTH = 35;

const int DATE_HIGHLIGHT_BOX_HEIGHT = 5;

const int DATE_HIGHLIGHT_BOX_YLOC = 30;

const int ALL_DATE_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

CustomBox PlusBox(PLUSBOX_X, PLUSBOX_Y, PLUSBOX_WIDTH, PLUSBOX_HEIGHT, PLUSBOX_COLOR);

CustomBox MinusBox(MINUSBOX_X, MINUSBOX_Y, MINUSBOX_WIDTH, MINUSBOX_HEIGHT, MINUSBOX_COLOR);

CustomBox NextBox(NEXTBOX_X, NEXTBOX_Y, NEXTBOX_WIDTH, NEXTBOX_HEIGHT, NEXTBOX_COLOR);

CustomBox HourHighlightBox(0, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox MinuteHighlightBox(100, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox SecondHighlightBox(210, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox MonthHighlightBox(70, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox DayHighlightBox(120, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox YearHighlightBox(180, DATE_HIGHLIGHT_BOX_YLOC, 2*DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox TimeBox(TIME_BOX_X, TIME_BOX_Y, TIME_BOX_WIDTH, TIME_BOX_HEIGHT, ILI9341_BLACK);

CustomBox DateBox(DATE_BOX_X, DATE_BOX_Y, DATE_BOX_WIDTH, DATE_BOX_HEIGHT, ILI9341_BLACK);

enum AdjustmentState

{

ADJ_NONE = 0,

ADJ_HOUR,

ADJ_MIN,

ADJ_SEC,

ADJ_DAYOFWEEK,

ADJ_MONTH,

ADJ_DAY,

ADJ_YEAR

};

int aDaysInMonth[] = { 31,28,31,30,31,30,31,31,30,31,30,31 };

AdjustmentState CurAdjState = ADJ_NONE;

const int TOUCH_TIMEOUT_MSEC = 5000; //reverts to regular display if no further touch input

elapsedMillis mSecSinceLastTouch; //timer for touch timout

#pragma endregion Display & Adj Box Parameters

#pragma region RTC Support

#define FORCE_RTC_TO_LAST_COMPILE_TIME //uncomment to manually set RTC to last compile time

RTC_DS3231 rtc;

char daysOfTheWeek[7][12] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };

DateTime now, lastTime;

char buffer[100];

int lasthour = 0; //02/15/21 added to refresh screen on the hour

struct tStamp

{

unsigned long mSec;

byte RTC_Status;

};

#define DS3231_ADDRESS 0x68 ///< I2C address for DS3231

#define DS3231_STATUSREG 0x0F ///< Status register

#define RTCStatArraySize 10

#define RTCStatTime_IntervalMsec 100

tStamp RTCStatArray[RTCStatArraySize];

#pragma endregion RTC Support

void setup()

{

Serial.begin(9600);

delay(3000);

Serial.println("Teensy 3.2 TFT Clock Program");

#pragma region DISPLAY INITIALIZATION

Serial.println("Initializing TFT display");

tft.begin();

// Note: you can now set the SPI speed to any value

// the default value is 30Mhz, but most ILI9341 displays

// can handle at least 60Mhz and as much as 100Mhz

// tft.setClock(60000000);

tft.fillScreen(ILI9341_BLACK);

tft.setTextColor(ILI9341_YELLOW);

tft.setTextSize(2);

tft.setRotation(1);

#pragma endregion region DISPLAY INITIALIZATION

#pragma region TFT DIAGNOSTICS

#ifndef N0_DIAGNOSTICS

// read diagnostics (optional but can help debug problems)

uint8_t x = tft.readcommand8(ILI9341_RDMODE);

Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDMADCTL);

Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDPIXFMT);

Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDIMGFMT);

Serial.print("Image Format: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDSELFDIAG);

Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX);

Serial.println(F("Benchmark Time (microseconds)"));

Serial.print(F("Screen fill "));

Serial.println(testFillScreen());

delay(200);

Serial.print(F("Text "));

Serial.println(testText());

delay(600);

Serial.print(F("Proportional Text "));

Serial.println(testProportionalText());

delay(600);

Serial.print(F("Lines "));

Serial.println(testLines(ILI9341_CYAN));

delay(200);

Serial.print(F("Horiz/Vert Lines "));

Serial.println(testFastLines(ILI9341_RED, ILI9341_BLUE));

delay(200);

Serial.print(F("Rectangles (outline) "));

Serial.println(testRects(ILI9341_GREEN));

delay(200);

Serial.print(F("Rectangles (filled) "));

Serial.println(testFilledRects(ILI9341_YELLOW, ILI9341_MAGENTA));

delay(200);

Serial.print(F("Circles (filled) "));

Serial.println(testFilledCircles(10, ILI9341_MAGENTA));

Serial.print(F("Circles (outline) "));

Serial.println(testCircles(10, ILI9341_WHITE));

delay(200);

Serial.print(F("Triangles (outline) "));

Serial.println(testTriangles());

delay(200);

Serial.print(F("Triangles (filled) "));

Serial.println(testFilledTriangles());

delay(200);

Serial.print(F("Rounded rects (outline) "));

Serial.println(testRoundRects());

delay(200);

Serial.print(F("Rounded rects (filled) "));

Serial.println(testFilledRoundRects());

delay(200);

Serial.println(F("Done!"));

#endif // !N0_DIAGNOSTICS

#pragma endregion region TFT DIAGNOSTICS

#pragma region RTC_SETUP

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

Serial.println("Initializing RTC...");

tft.println("Initializing RTC...");

delay(1000);

if (!rtc.begin())

{

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

Serial.println("Couldn't find RTC");

tft.println("Couldn't find RTC");

while (1);

}

bool lp = rtc.lostPower();

Serial.print("lostPower() reports "); Serial.println(lp);

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

tft.printf("lostPower() = %d\n", lp);

delay(1000);

if (rtc.lostPower())

{

Serial.println("RTC lost power. Setting RTC to last compile time");

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

tft.println("RTC lost power. Setting RTC to last compile time");

// following line sets the RTC to the date & time this sketch was compiled

rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

}

#ifdef FORCE_RTC_TO_LAST_COMPILE_TIME

Serial.println("Forcing RTC to last compile time");

// following line sets the RTC to the date & time this sketch was compiled

rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

#endif //

//DateTime now = rtc.now();

now = rtc.now();

//char buffer[100];

memset(buffer, '\0', 100);

GetDayDateTimeStringFromDateTime(now, buffer);

Serial.println("Retrieving Date/Time from RTC....");

Serial.print("Date String = "); Serial.println(buffer);

#pragma endregion RTC_SETUP

//DEBUG!!

//tft.println("Setting time to just before midnight");

//rtc.adjust(DateTime(2021, 02, 13, 00, 59, 45));

//DEBUG!!

//02/15/21 needed detect hour changes for screen refresh

now = rtc.now();

lasthour = now.hour();

mSecSinceLastClockUpdate = 0; //used to space out clock updates in loop()

}

void loop(void)

{

//Serial.printf("%lu: mSecSinceLastClockUpdate = %lu\n", millis(), (long int)mSecSinceLastClockUpdate);

delay(100);

//see if there is a touch anywhere

if (ts.touched())

{

mSecSinceLastTouch = 0; //reset the timeout watchdog

while (mSecSinceLastTouch < TOUCH_TIMEOUT_MSEC)

{

//Serial.printf("mSecSinceLastTouch = %lu\n", (unsigned long int)mSecSinceLastTouch);

TS_Point Tp = ts.getPoint();// Retrieve the touch point

if (Tp.z > 1000)

{

mSecSinceLastTouch = 0; //reset the timeout watchdog

TS_Point Dp = GetTouchPointInDisplayCoords(Tp);

CurAdjState = (AdjustmentState)AdjustTimeAndDate(Dp);

//Serial.printf("Tp.z = %d: AdjustTimeAndDate(%d, %d) returns %d\n", Tp.z, Dp.x, Dp.y, (int)CurAdjState);

if (CurAdjState > ADJ_NONE)

{

ShowLongTimeDisplay();

ShowAdjButtons();

}

HideButtons();

HideHighlightBars();

ShowNormalTimeDisplay();

ShowDateDisplay();

CurAdjState = ADJ_NONE;

mSecSinceLastClockUpdate = 0;

}

if (mSecSinceLastClockUpdate > CLOCK_UPDATE_MSEC)

{

mSecSinceLastClockUpdate -= CLOCK_UPDATE_MSEC;

now = rtc.now();

ShowDateDisplay(); //Display day and date

//Display time

if (CurAdjState > ADJ_NONE)

{

ShowLongTimeDisplay();

}

else

{

ShowNormalTimeDisplay();

}

#pragma region DATE_TIME_FUNCTIONS

void GetDayDateTimeStringFromDateTime(DateTime dt, char* bufptr)

{

int mydayofweek = dt.dayOfTheWeek();

//mydayofweek = (mydayofweek < 0) ? 0 : mydayofweek; //guard for return of 0 from weekday()

int myday = dt.day();

int mymonth = dt.month();

int myyear = dt.year();

int myhour = dt.hour();

int mymin = dt.minute();

int mysec = dt.second();

char* dayofweek = (char*)daysOfTheWeek[mydayofweek];

sprintf(bufptr, "%s %4d/%02d/%02d at %02d:%02d:%02d", dayofweek, mymonth, myday, myyear, myhour, mymin, mysec);

}

void HourStringFromDateTime(DateTime dt, char* bufptr)

{

int hourval = dt.hour();

if (hourval > 12)

{

hourval -= 12;

}

//sprintf(bufptr, "%02d", hourval);

sprintf(bufptr, "%d", hourval);

}

void MinuteStringFromDateTime(DateTime dt, char* bufptr)

{

sprintf(bufptr, "%02d", dt.minute());

}

#pragma endregion DATE_TIME_FUNCTIONS

AdjustmentState AdjustTimeAndDate(TS_Point Dp)

{

AdjustmentState adjstate = ADJ_NONE;

DateTime newtime;

DateTime now = rtc.now();

//int new_hour, new_minute, new_month, new_day, new_year;

int new_hour, new_minute, new_month, new_day;

//Serial.printf("In GetCurAdjState with CurAdjState = %d, at point (%d,%d)\n", CurAdjState, Dp.x, Dp.y);

switch (CurAdjState)

{

case ADJ_NONE:

if (TimeBox.TouchHit(Dp.x, Dp.y))

{

adjstate = ADJ_HOUR; //always start with hour

ShowHighlightBar(ADJ_HOUR);

}

else if (DateBox.TouchHit(Dp.x, Dp.y))

{

adjstate = ADJ_MONTH; //always start with month

ShowHighlightBar(ADJ_MONTH);

}

break;

case ADJ_HOUR:

Serial.print("In GetCurAdjState ADJ_HOUR case\n");

adjstate = ADJ_HOUR;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_hour = now.hour() + 1;

if (new_hour >= 24)

{

new_hour -= 24;

}

newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_hour = now.hour() - 1;

if (new_hour < 0)

{

new_hour += 24;

}

newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_MIN;

ShowHighlightBar(ADJ_MIN);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_MIN:

Serial.print("In GetCurAdjState ADJ_MIN case\n");

adjstate = ADJ_MIN;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_minute = now.minute() + 1;

if (new_minute >= 60)

{

new_minute = 0;

}

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), new_minute, now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute() - 1);

Serial.printf("ADJ_HOUR case in DoMinusOp(). Decrementing Hour Value\n");

Serial.printf("Old time is %d:%d:%d:%d\n", now.day(), now.month(), now.year(), now.hour());

Serial.printf("New time is %d:%d:%d:%d\n", newtime.day(), newtime.month(), newtime.year(), newtime.hour());

rtc.adjust(newtime);

Serial.printf("RTC now set to %d:%d:%d:%d\n", now.day(), now.month(), now.year(), now.hour());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_SEC;

ShowHighlightBar(ADJ_SEC);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_SEC:

Serial.print("In GetCurAdjState ADJ_SEC case\n");

adjstate = ADJ_SEC;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);

Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);

Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_HOUR;

ShowHighlightBar(ADJ_HOUR);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_DAYOFWEEK:

break;

case ADJ_MONTH:

Serial.print("In GetCurAdjState ADJ_MONTH case\n");

adjstate = ADJ_MONTH;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_month = now.month() + 1;

if (new_month > 12)

{

new_month -= 12;

}

newtime = DateTime(now.year(), new_month, now.day(), now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_month = now.month() - 1;

new_month = (new_month <= 0) ? 12 : new_month;

newtime = DateTime(now.year(), new_month, now.day(), now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_DAY;

ShowHighlightBar(ADJ_DAY);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_DAY:

Serial.print("In GetCurAdjState ADJ_DAY case\n");

adjstate = ADJ_DAY;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_day = AdjustDayValue(now.month(), now.day() + 1); //not all months have same number of days

newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_day = now.day() - 1;

new_day = (new_day <= 0) ? aDaysInMonth[now.month() - 1] : new_day;

newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_YEAR;

ShowHighlightBar(ADJ_YEAR);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_YEAR:

Serial.print("In GetCurAdjState ADJ_YEAR case\n");

adjstate = ADJ_YEAR;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

newtime = DateTime(now.year() + 1, now.month(), now.day(), now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

newtime = DateTime(now.year() - 1, now.month(), now.day(), now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_MONTH;

ShowHighlightBar(ADJ_MONTH);

delay(500); //prevent multiple NEXT transitions

}

break;

default:

break;

}

//Serial.printf("AdjustTimeAndDate(%d, %d) returns %d\n", Dp.x, Dp.y, (int)adjstate);

return adjstate ;

}

#pragma region Helper Functions

TS_Point GetTouchPointInDisplayCoords(TS_Point Tp)

{

//Purpose: Retrieve a touch point in display coordinate system

//Inputs:

// Rotation value

// Mapping values

// TS_Point from touch chip

//Outputs:

// TS_Point object containing touch (X,Y) in display coordinates

//Plan:

// Step1: Retrieve touch point from touch chip

// Step2: Map to display coordinates taking rotation into account

//Step1: Retrieve touch point from touch chip

//TS_Point Tp = ts.getPoint();

TS_Point Dp;

//Step2: Map to display coordinates taking rotation into account

#ifdef SCREEN_ORIENTATION_1

Dp.x = map(Tp.x, TS_MAXX, TS_MINX, 0, tft.width());

Dp.y = map(Tp.y, TS_MAXY, TS_MINY, 0, tft.height());

#else

#endif

////DEBUG!!

//Serial.printf(" GetTouchPointInDisplayCoords: %lu\t%d\t%d\t%d\t%d\t%d\n",

// millis(), Tp.x, Tp.y, Tp.z, Dp.x, Dp.y);

////DEBUG!!

return Dp;

}

void ShowAdjButtons()

{

PlusBox.Draw(&tft, '+', ILI9341_BLACK);

MinusBox.Draw(&tft, '-', ILI9341_BLACK);

//03/04/21 getTextBounds() reports wrong info - use 70w x 20 tall

int txt_x = NEXTBOX_X + round((float)(NEXTBOX_WIDTH / 2.)) - round((float)(70 / 2.));

int txt_y = NEXTBOX_Y + round((float)(NEXTBOX_HEIGHT / 2.)) - round((float)(20 / 2.));

tft.setCursor(txt_x, txt_y);

tft.setTextSize(3);

tft.setTextColor(ILI9341_BLACK);

String boxstr = "NEXT";

NextBox.Draw(&tft);

tft.print(boxstr);

}

void HideButtons()

{

PlusBox.Draw(&tft, ILI9341_BLACK);

MinusBox.Draw(&tft, ILI9341_BLACK);

NextBox.Draw(&tft, ILI9341_BLACK);

}

void ShowNormalTimeDisplay()

{

//Serial.printf("In ShowNormalTimeDisplay\n");

now = rtc.now();

tft.setCursor(0, 100);

tft.setTextColor(ILI9341_RED);

tft.setTextSize(10);

TimeBox.Draw(&tft);

tft.setCursor(0, 100);

int hournum = now.hour();

//guard against 1259->1300 && 2359->0000 transitions

if (hournum > 12)

{

hournum -= 12;

}

else if (hournum == 0)

{

hournum += 12;

}

hournum = (hournum > 12) ? hournum - 12 : hournum;

tft.printf("%2d:%02d", hournum, now.minute());

}

void ShowLongTimeDisplay()

{

//Serial.printf("In ShowLongTimeDisplay\n");

now = rtc.now();

tft.setCursor(0, 100);

tft.setTextColor(ILI9341_RED);

//tft.setTextSize(10);

tft.setTextSize(6);

tft.fillRect(0, 98, 350, 74, ILI9341_BLACK);

//tft.fillRect(0, 98, 350, 74, ILI9341_YELLOW);

tft.setCursor(0, 100);

int hournum = now.hour();

//guard against 1259->1300 && 2359->0000 transitions

if (hournum > 12)

{

hournum -= 12;

}

else if (hournum == 0)

{

hournum += 12;

}

hournum = (hournum > 12) ? hournum - 12 : hournum;

tft.printf("%2d:%02d:%02d", hournum, now.minute(), now.second());

}

void ShowHighlightBar(AdjustmentState adjstate)

{

switch (adjstate)

{

case ADJ_NONE:

Serial.printf("ADJ_NONE case in ShowHighlightBox()\n");

HideHighlightBars();

break;

case ADJ_HOUR:

HideHighlightBars();

HourHighlightBox.Draw(&tft);

break;

case ADJ_MIN:

HideHighlightBars();

MinuteHighlightBox.Draw(&tft);

break;

case ADJ_SEC:

HideHighlightBars();

SecondHighlightBox.Draw(&tft);

break;

case ADJ_DAYOFWEEK:

break;

case ADJ_MONTH:

HideHighlightBars();

MonthHighlightBox.Draw(&tft);

break;

case ADJ_DAY:

HideHighlightBars();

DayHighlightBox.Draw(&tft);

break;

case ADJ_YEAR:

HideHighlightBars();

YearHighlightBox.Draw(&tft);

break;

default:

break;

}

void HideHighlightBars()

{

tft.fillRect(0, DATE_HIGHLIGHT_BOX_YLOC, ALL_DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);

tft.fillRect(0, TIME_HIGHLIGHT_BOX_YLOC, ALL_TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);

}

void ShowDateDisplay()

{

DateTime now = rtc.now();

DateBox.Draw(&tft);

tft.setTextColor(ILI9341_YELLOW);

tft.setCursor(0, 0);

tft.setTextSize(3);

tft.printf("%s %02d/%02d/%02d\n",

daysOfTheWeek[now.dayOfTheWeek()], now.month(), now.day(), now.year());

}

int AdjustDayValue(int month, int day)

{

if (day > aDaysInMonth[month-1])

{

Serial.printf("%d is greater than max days (%d) for this month - setting to 1\n", day, aDaysInMonth[month-1] );

return 1;

}

else

{

return day;

}

#pragma endregion Helper Functions

#pragma once

#ifndef _ILI9341_t3NH_	
#include <ILI9341_t3n.h>
#endif // !_ILI9341_t3NH_

class CustomBox
{
public:
	int x;
	int y;
private:
	int w;
	int h;
	int color;
public:
	CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color);
	CustomBox(int in_w, int in_h, int in_color);
	void Draw(ILI9341_t3n* disp);
	void Draw(ILI9341_t3n* disp, char c, int txtcolor, int size);
	void Draw(ILI9341_t3n* disp, String txt, int size);
	void Draw(ILI9341_t3n* disp, char* buff, int size);
	void Draw(ILI9341_t3n* disp, int color);
	bool TouchHit(int in_x, int in_y);
};


CustomBox::CustomBox(int in_w, int in_h, int in_color)
{
	x = 0;
	y = 0;
	w = in_w;
	h = in_h;
	color = in_color;
}

CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)
{
	x = in_x;
	y = in_y;
	w = in_w;
	h = in_h;
	color = in_color;
}

inline void CustomBox::Draw(ILI9341_t3n* disp)
{
	disp->fillRect(x, y, w, h, color);
}

//class CustomBoxWithText :CustomBox
//{
//private:
//	char boxtext[6];
//public:
//	CustomBoxWithText(int in_x, int in_y, int in_w, int in_h, int in_color, char* txt);
//};
//
//
//CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)
//{
//	x = in_x;
//	y = in_y;
//	w = in_w;
//	h = in_h;
//	color = in_color;
//}

inline void CustomBox::Draw(ILI9341_t3n* disp, char c, int txtcolor, int size = 0)
{
	disp->fillRect(x, y, w, h, color);
	if (size==0)
	{
		size = round((float)h / 10.);
	}
	int char_x = x + round((float)w / 4.);
	//int char_x = x;
	disp->setCursor(char_x, y+size);
	disp->setTextSize(size);
	disp->setTextColor(txtcolor);
	disp->print(c);
}

inline void CustomBox::Draw(ILI9341_t3n* disp, String txt, int size)
{
	disp->fillRect(x, y, w, h, color);
	disp->setCursor(x, y);
	disp->setTextSize(size);
	disp->print(txt);
}

inline void CustomBox::Draw(ILI9341_t3n* disp, char* buff, int size)
{
	Serial.printf("In Draw() with buff = %s\n", buff);
	disp->fillRect(x, y, w, h, color);
	//disp->setCursor(x, y);
	disp->setTextSize(size);
	//disp->setTextDatum(MC_DATUM);
	disp->drawString1(buff, strlen(buff), x, y);
}

inline void CustomBox::Draw(ILI9341_t3n* disp, int newcolor)
{
	disp->fillRect(x, y, w, h, newcolor);
}

inline bool CustomBox::TouchHit(int in_x, int in_y)
{
	//Purpose:  Determine if input coordinates are within a specified box
	//Inputs:
	//  in_x, in_y = integers denoting mapped touch coordinates
	//  box location & dimensions
	//Outputs:
	//  true if (in_x, in_y) falls within box region.  Othewise, false

	//Serial.printf("TouchHit(%d,%d), box (x,y,w,h) = (%d,%d,%d,%d)\n",
	//	in_x, in_y, x, y, w, h);

	return (in_x > x && in_y > y && in_x < x + w && in_y < y + h);
}

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#pragma once

#ifndef _ILI9341_t3NH_

#include <ILI9341_t3n.h>

#endif // !_ILI9341_t3NH_

class CustomBox

{

public:

int x;

int y;

private:

int w;

int h;

int color;

public:

CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color);

CustomBox(int in_w, int in_h, int in_color);

void Draw(ILI9341_t3n* disp);

void Draw(ILI9341_t3n* disp, char c, int txtcolor, int size);

void Draw(ILI9341_t3n* disp, String txt, int size);

void Draw(ILI9341_t3n* disp, char* buff, int size);

void Draw(ILI9341_t3n* disp, int color);

bool TouchHit(int in_x, int in_y);

};

CustomBox::CustomBox(int in_w, int in_h, int in_color)

{

x = 0;

y = 0;

w = in_w;

h = in_h;

color = in_color;

}

CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)

{

x = in_x;

y = in_y;

w = in_w;

h = in_h;

color = in_color;

}

inline void CustomBox::Draw(ILI9341_t3n* disp)

{

disp->fillRect(x, y, w, h, color);

}

//class CustomBoxWithText :CustomBox

//{

//private:

// char boxtext[6];

//public:

// CustomBoxWithText(int in_x, int in_y, int in_w, int in_h, int in_color, char* txt);

//};

//CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)

//{

// x = in_x;

// y = in_y;

// w = in_w;

// h = in_h;

// color = in_color;

//}

inline void CustomBox::Draw(ILI9341_t3n* disp, char c, int txtcolor, int size = 0)

{

disp->fillRect(x, y, w, h, color);

if (size==0)

{

size = round((float)h / 10.);

}

int char_x = x + round((float)w / 4.);

//int char_x = x;

disp->setCursor(char_x, y+size);

disp->setTextSize(size);

disp->setTextColor(txtcolor);

disp->print(c);

}

inline void CustomBox::Draw(ILI9341_t3n* disp, String txt, int size)

{

disp->fillRect(x, y, w, h, color);

disp->setCursor(x, y);

disp->setTextSize(size);

disp->print(txt);

}

inline void CustomBox::Draw(ILI9341_t3n* disp, char* buff, int size)

{

Serial.printf("In Draw() with buff = %s\n", buff);

disp->fillRect(x, y, w, h, color);

//disp->setCursor(x, y);

disp->setTextSize(size);

//disp->setTextDatum(MC_DATUM);

disp->drawString1(buff, strlen(buff), x, y);

}

inline void CustomBox::Draw(ILI9341_t3n* disp, int newcolor)

{

disp->fillRect(x, y, w, h, newcolor);

}

inline bool CustomBox::TouchHit(int in_x, int in_y)

{

//Purpose: Determine if input coordinates are within a specified box

//Inputs:

// in_x, in_y = integers denoting mapped touch coordinates

// box location & dimensions

//Outputs:

// true if (in_x, in_y) falls within box region. Othewise, false

//Serial.printf("TouchHit(%d,%d), box (x,y,w,h) = (%d,%d,%d,%d)\n",

// in_x, in_y, x, y, w, h);

return (in_x > x && in_y > y && in_x < x + w && in_y < y + h);

}

10 March 2021 Update:

After getting all of the above to work, I decided to re-tackle the proportional fonts issue. In my first attempt, I had used the ‘ILI9341_t3’ version of the ILI9341 Teensy library, and there is a newer ‘ILI9341_t3n‘ version out now. So, I modified one of the example programs (unfortunately still written for the old library) to be compatible and got proportional fonts (well, just the Arial one) working on the display.

After several hours of running this example with no apparent artifacts or problems, I decided to update my complete clock program to use the Arial font. After making the modifications and running it overnight, the time & date displays were still rock-solid the next day, as shown in the following photo – YAY!!

So now all that is left to do is to upload the new Arial-based code (with the time background color switched back to ‘black’) to my ‘working’ clock module, sit back and enjoy the proportional font display.

14 July 2021 Update:

I noticed that my clock had some ‘issues’ with time/date adjustments, so I ‘put it back in the shop’ for some additional TLC. While I was at it, I noticed that the system schematic didn’t include the DS3231 (hard to have a clock without a RTC!), so I updated it as well. Here’s the updated schematic.

The updates made were to make the time/date adjustments more robust. The updated code is included in its entirety below. First the main program:

/*
    Name:       Teensy_LCDClockV4.ino
    Created:	3/9/2021 11:12:31 AM
    Author:     FRANKNEWXPS15\Frank

    This project was cloned from Teensy_LCDClockV3 to re-investigate the use of proportional fonts
*/

#include <XPT2046_Touchscreen.h>
#include <ILI9341_t3n.h>
#include <Wire.h>
#include "RTClib.h"
#include "elapsedMillis.h"
#include "CustomBox.h"
#include "ili9341_t3n_font_Arial.h"

#define N0_DIAGNOSTICS
//****************************************************************************
// Settings and objects
//****************************************************************************

#pragma region DISPLAY_PIN_ASSIGNMENTS
//02/15/21 pin assignments from https://www.pjrc.com/store/display_ili9341_touch.html
#define TFT_DC  9
#define TFT_CS 10
#define TFT_RST 7
#define TFT_SCK 13
#define TFT_MISO 12
#define TFT_MOSI 11
#define TOUCH_CS  8
#pragma endregion DISPLAY_PIN_ASSIGNMENTS

XPT2046_Touchscreen ts(TOUCH_CS);
ILI9341_t3n tft = ILI9341_t3n(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCK, TFT_MISO);
elapsedMillis mSecSinceLastClockUpdate;
const int CLOCK_UPDATE_MSEC = 1000;

#pragma region DISP_AND_ADJ_BOX_PARAMETERS
// Size of the color selection boxes and the paintbrush size
#define MAX_DISPLAY_X 240
#define MAX_DISPLAY_Y 320
#define SCREEN_ORIENTATION_1

#define TS_MINX 600
#define TS_MINY 600
#define TS_MAXX 3758
#define TS_MAXY 3612

const int PLUSBOX_X = 20;
const int PLUSBOX_Y = 180;
const int PLUSBOX_WIDTH = 50;
const int PLUSBOX_HEIGHT = 50;
const int PLUSBOX_COLOR = ILI9341_BLUE;

const int MINUSBOX_X = 120;
const int MINUSBOX_Y = 180;
const int MINUSBOX_WIDTH = 50;
const int MINUSBOX_HEIGHT = 50;
const int MINUSBOX_COLOR = ILI9341_YELLOW;

const String nextstr = "NEXT";
const int nextstr_width = 70;
const int nextstr_height = 20;
const int NEXTBOX_X = 220;
const int NEXTBOX_Y = 180;
const int NEXTBOX_COLOR = ILI9341_GREEN;
const int NEXTBOX_WIDTH = 100;
const int NEXTBOX_HEIGHT = 50;

const int TIME_BOX_X = 0;
const int TIME_BOX_Y = 82;
const int TIME_BOX_WIDTH = 350;
const int TIME_BOX_HEIGHT = 80;

const int DATE_BOX_X = 0;
const int DATE_BOX_Y = 0;
const int DATE_BOX_WIDTH = 320;
const int DATE_BOX_HEIGHT = 30;

//03/05/21 used to hide adjustment boxes
const int ALL_ADJ_BOXES_WIDTH = NEXTBOX_X + NEXTBOX_WIDTH;
const int ALL_ADJ_BOXES_HEIGHT = 50;

const int TIME_HIGHLIGHT_BOX_WIDTH = 75;
const int TIME_HIGHLIGHT_BOX_HEIGHT = 5;
const int TIME_HIGHLIGHT_BOX_YLOC = 75;
const int ALL_TIME_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

const int DATE_HIGHLIGHT_BOX_WIDTH = 40;
const int DATE_HIGHLIGHT_BOX_HEIGHT = 5;
const int DATE_HIGHLIGHT_BOX_YLOC = 40;
const int ALL_DATE_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

CustomBox PlusBox(PLUSBOX_X, PLUSBOX_Y, PLUSBOX_WIDTH, PLUSBOX_HEIGHT, PLUSBOX_COLOR);
CustomBox MinusBox(MINUSBOX_X, MINUSBOX_Y, MINUSBOX_WIDTH, MINUSBOX_HEIGHT, MINUSBOX_COLOR);
CustomBox NextBox(NEXTBOX_X, NEXTBOX_Y, NEXTBOX_WIDTH, NEXTBOX_HEIGHT, NEXTBOX_COLOR);

CustomBox HourHighlightBox(20, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox MinuteHighlightBox(120, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox SecondHighlightBox(230, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox MonthHighlightBox(72, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox DayHighlightBox(132, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);
CustomBox YearHighlightBox(178, DATE_HIGHLIGHT_BOX_YLOC, 90, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox TimeBox(TIME_BOX_X, TIME_BOX_Y, TIME_BOX_WIDTH, TIME_BOX_HEIGHT, ILI9341_BLACK);
CustomBox DateBox(DATE_BOX_X, DATE_BOX_Y, DATE_BOX_WIDTH, DATE_BOX_HEIGHT, ILI9341_BLACK);

enum AdjustmentState
{
  ADJ_NONE = 0,
  ADJ_HOUR,
  ADJ_MIN,
  ADJ_SEC,
  ADJ_DAYOFWEEK,
  ADJ_MONTH,
  ADJ_DAY,
  ADJ_YEAR
};

const char AdjValNameArray[8][9] = { "ADJ_NONE", "ADJ_HOUR", "ADJ_MIN", "ADJ_SEC", "ADJ_DOW", "ADJ_MNTH", "ADJ_DAY", "ADJ_YEAR" };

int aDaysInMonth[] = { 31,28,31,30,31,30,31,31,30,31,30,31 };

AdjustmentState CurAdjState = ADJ_NONE;


const int TOUCH_TIMEOUT_MSEC = 5000; //reverts to regular display if no further touch input
elapsedMillis mSecSinceLastTouch; //timer for touch timout
#pragma endregion Display & Adj Box Parameters


#pragma region RTC Support
#define FORCE_RTC_TO_LAST_COMPILE_TIME //uncomment to manually set RTC to last compile time

RTC_DS3231 rtc;

char daysOfTheWeek[7][12] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
DateTime now, lastTime;
char buffer[100];
int lasthour = 0; //02/15/21 added to refresh screen on the hour

struct tStamp
{
  unsigned long mSec;
  byte RTC_Status;
};

#define DS3231_ADDRESS 0x68   ///< I2C address for DS3231
#define DS3231_STATUSREG 0x0F ///< Status register

#define RTCStatArraySize 10
#define RTCStatTime_IntervalMsec 100
tStamp RTCStatArray[RTCStatArraySize];


#pragma endregion RTC Support

void setup()
{
  Serial.begin(9600);
  delay(3000);

  Serial.println("Teensy 3.2 TFT Clock Program");

#pragma region DISPLAY INITIALIZATION
  Serial.println("Initializing TFT display");

  tft.begin();
  // Note: you can now set the SPI speed to any value
  // the default value is 30Mhz, but most ILI9341 displays
  // can handle at least 60Mhz and as much as 100Mhz
  //  tft.setClock(60000000);
  tft.fillScreen(ILI9341_BLACK);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setTextSize(2);
  tft.setRotation(1);
#pragma endregion region DISPLAY INITIALIZATION

#pragma region TFT DIAGNOSTICS
#ifndef N0_DIAGNOSTICS

  // read diagnostics (optional but can help debug problems)
  uint8_t x = tft.readcommand8(ILI9341_RDMODE);
  Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDMADCTL);
  Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDPIXFMT);
  Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDIMGFMT);
  Serial.print("Image Format: 0x"); Serial.println(x, HEX);
  x = tft.readcommand8(ILI9341_RDSELFDIAG);
  Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX);

  Serial.println(F("Benchmark                Time (microseconds)"));

  Serial.print(F("Screen fill              "));
  Serial.println(testFillScreen());
  delay(200);

  Serial.print(F("Text                     "));
  Serial.println(testText());
  delay(600);

  Serial.print(F("Proportional Text        "));
  Serial.println(testProportionalText());
  delay(600);

  Serial.print(F("Lines                    "));
  Serial.println(testLines(ILI9341_CYAN));
  delay(200);

  Serial.print(F("Horiz/Vert Lines         "));
  Serial.println(testFastLines(ILI9341_RED, ILI9341_BLUE));
  delay(200);

  Serial.print(F("Rectangles (outline)     "));
  Serial.println(testRects(ILI9341_GREEN));
  delay(200);

  Serial.print(F("Rectangles (filled)      "));
  Serial.println(testFilledRects(ILI9341_YELLOW, ILI9341_MAGENTA));
  delay(200);

  Serial.print(F("Circles (filled)         "));
  Serial.println(testFilledCircles(10, ILI9341_MAGENTA));

  Serial.print(F("Circles (outline)        "));
  Serial.println(testCircles(10, ILI9341_WHITE));
  delay(200);

  Serial.print(F("Triangles (outline)      "));
  Serial.println(testTriangles());
  delay(200);

  Serial.print(F("Triangles (filled)       "));
  Serial.println(testFilledTriangles());
  delay(200);

  Serial.print(F("Rounded rects (outline)  "));
  Serial.println(testRoundRects());
  delay(200);

  Serial.print(F("Rounded rects (filled)   "));
  Serial.println(testFilledRoundRects());
  delay(200);

  Serial.println(F("Done!"));
#endif // !N0_DIAGNOSTICS
#pragma endregion region TFT DIAGNOSTICS

#pragma region RTC_SETUP
  DateBox.Draw(&tft); //erase previous text
  tft.setCursor(0, 0);
  Serial.println("Initializing RTC...");
  //tft.println("Initializing RTC...");
  delay(1000);

  if (!rtc.begin())
  {
    DateBox.Draw(&tft); //erase previous text
    tft.setCursor(0, 0);
    Serial.println("Couldn't find RTC");
    tft.println("Couldn't find RTC");
    while (1);
  }

  bool lp = rtc.lostPower();
  Serial.print("lostPower() reports "); Serial.println(lp);
  DateBox.Draw(&tft); //erase previous text
  tft.setCursor(0, 0);
  tft.printf("lostPower() = %d\n", lp);
  delay(1000);
  if (rtc.lostPower())
  {
    Serial.println("RTC lost power.  Setting RTC to last compile time");
    DateBox.Draw(&tft); //erase previous text
    tft.setCursor(0, 0);
    tft.println("RTC lost power.  Setting RTC to last compile time");

    // following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

#ifdef FORCE_RTC_TO_LAST_COMPILE_TIME
  Serial.println("Forcing RTC to last compile time");
  // following line sets the RTC to the date & time this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
#endif // 

  //DateTime now = rtc.now();
  now = rtc.now();
  memset(buffer, '\0', 100);
  GetDayDateTimeStringFromDateTime(now, buffer);
  Serial.println("Retrieving Date/Time from RTC....");
  Serial.print("Date String = "); Serial.println(buffer);
#pragma endregion RTC_SETUP


  //DEBUG!!
    //tft.println("Setting time to just before midnight");
    //rtc.adjust(DateTime(2021, 02, 13, 00, 59, 45));
  //DEBUG!!

    //02/15/21 needed detect hour changes for screen refresh
  now = rtc.now();
  lasthour = now.hour();
  mSecSinceLastClockUpdate = 0; //used to space out clock updates in loop()
}


void loop(void)
{

  //Serial.printf("%lu: mSecSinceLastClockUpdate = %lu\n", millis(), (long int)mSecSinceLastClockUpdate);
  delay(100);

  //see if there is a touch anywhere
  if (ts.touched())
  {
    mSecSinceLastTouch = 0; //reset the timeout watchdog

    while (mSecSinceLastTouch < TOUCH_TIMEOUT_MSEC)
    {
      //Serial.printf("mSecSinceLastTouch = %lu\n", (unsigned long int)mSecSinceLastTouch);

      TS_Point Tp = ts.getPoint();// Retrieve the touch point
      if (Tp.z > 1000)
      {
        mSecSinceLastTouch = 0; //reset the timeout watchdog
        TS_Point Dp = GetTouchPointInDisplayCoords(Tp);

        CurAdjState = (AdjustmentState)AdjustTimeAndDate(Dp);
        Serial.printf("Tp.z = %d: AdjustTimeAndDate(%d, %d) returns %s\n", Tp.z, Dp.x, Dp.y, AdjValNameArray[(int)CurAdjState]);

        if (CurAdjState > ADJ_NONE)
        {
          ShowLongTimeDisplay();
          ShowAdjButtons();
        }
      }
    }

    HideButtons();
    HideHighlightBars();
    ShowNormalTimeDisplay();
    ShowDateDisplay();
    CurAdjState = ADJ_NONE;

    mSecSinceLastClockUpdate = 0;
  }


  if (mSecSinceLastClockUpdate > CLOCK_UPDATE_MSEC)
  {
    mSecSinceLastClockUpdate -= CLOCK_UPDATE_MSEC;
    now = rtc.now();

    ShowDateDisplay(); //Display day and date

    //Display time
    if (CurAdjState > ADJ_NONE)
    {
      ShowLongTimeDisplay();
    }
    else
    {
      ShowNormalTimeDisplay();
    }
  }
}

#pragma region DATE_TIME_FUNCTIONS
void GetDayDateTimeStringFromDateTime(DateTime dt, char* bufptr)
{
  int mydayofweek = dt.dayOfTheWeek();
  //mydayofweek = (mydayofweek < 0) ? 0 : mydayofweek; //guard for return of 0 from weekday()
  int myday = dt.day();
  int mymonth = dt.month();
  int myyear = dt.year();
  int myhour = dt.hour();
  int mymin = dt.minute();
  int mysec = dt.second();
  char* dayofweek = (char*)daysOfTheWeek[mydayofweek];

  sprintf(bufptr, "%s %4d/%02d/%02d at %02d:%02d:%02d", dayofweek, mymonth, myday, myyear, myhour, mymin, mysec);
}


void HourStringFromDateTime(DateTime dt, char* bufptr)
{
  int hourval = dt.hour();
  if (hourval > 12)
  {
    hourval -= 12;
  }

  //sprintf(bufptr, "%02d", hourval);
  sprintf(bufptr, "%d", hourval);
}

void MinuteStringFromDateTime(DateTime dt, char* bufptr)
{
  sprintf(bufptr, "%02d", dt.minute());
}
#pragma endregion DATE_TIME_FUNCTIONS

AdjustmentState AdjustTimeAndDate(TS_Point Dp)
{
  AdjustmentState adjstate = ADJ_NONE;
  DateTime newtime;
  DateTime now = rtc.now();
  int new_hour = 0; int new_minute = 0; int new_month = 0; int new_day = 0;
  int cur_day = 0; //added 07/13/21

  //Serial.printf("In AdjustTimeAndDate with CurAdjState = %d, at point (%d,%d)\n", CurAdjState, Dp.x, Dp.y);

  switch (CurAdjState)
  {
  case ADJ_NONE:
    if (TimeBox.TouchHit(Dp.x, Dp.y))
    {
      adjstate = ADJ_HOUR; //always start with hour
      ShowHighlightBar(ADJ_HOUR);
    }
    else if (DateBox.TouchHit(Dp.x, Dp.y))
    {
      adjstate = ADJ_MONTH; //always start with month
      ShowHighlightBar(ADJ_MONTH);
    }
    break;
  case ADJ_HOUR:
    Serial.print("In AdjustTimeAndDate ADJ_HOUR case\n");
    adjstate = ADJ_HOUR;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_hour = now.hour() + 1;
      if (new_hour >= 24)
      {
        new_hour -= 24;
      }
      newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_hour = now.hour() - 1;
      if (new_hour < 0)
      {
        new_hour += 24;
      }
      newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_MIN;
      ShowHighlightBar(ADJ_MIN);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_MIN:
    Serial.print("In AdjustTimeAndDate ADJ_MIN case\n");
    adjstate = ADJ_MIN;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_minute = now.minute() + 1;
      if (new_minute >= 60)
      {
        new_minute = 0;
      }

      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), new_minute, now.second());
      Serial.printf("New time is %2d:%2d\n", newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %2d:%2d\n", now.day(), now.hour(), now.minute());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("ADJ_MIN case in DoMinusOp().  Decrementing Minute Value\n");
      Serial.printf("Old time is %2d:%2d\n", now.hour(),now.minute());
      new_minute = now.minute() - 1;
      if (new_minute < 0)
      {
        Serial.printf("adjusting for 00/59 rollover\n");
        new_minute = 59;
      }
      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), new_minute);
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("New time is %d:%d\n", now.hour(), now.minute());
      Serial.printf("RTC now set to %2d:%2d\n", now.hour(), now.minute());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'decrement' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_SEC;
      ShowHighlightBar(ADJ_SEC);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_SEC:
    Serial.print("In AdjustTimeAndDate ADJ_SEC case\n");
    adjstate = ADJ_SEC;

    //both PLUS & MINUS operations simply reset seconds to zero
    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);
      Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

      newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);
      Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());
      ShowLongTimeDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_HOUR;
      ShowHighlightBar(ADJ_HOUR);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_DAYOFWEEK:
    break;
  case ADJ_MONTH: //07/13/21 rev to watch for next/prev month max days
    Serial.print("In AdjustTimeAndDate ADJ_MONTH case\n");
    adjstate = ADJ_MONTH;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_month = now.month() + 1;
      if (new_month > 12)
      {
        new_month = 1; //07/13/21 bugfix
      }

      //07/13/21 have to adjust if current dayval > max for new month
      cur_day = now.day();

      if (cur_day > aDaysInMonth[new_month - 1])
      {
        Serial.printf("%d Exceeds max days for new month (%d for %d)\n", cur_day, aDaysInMonth[new_month - 1], new_month);
        new_day = aDaysInMonth[new_month - 1];
      }
      else
      {
        new_day = cur_day;
      }

      newtime = DateTime(now.year(), new_month, new_day, now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_month = now.month() - 1;
      /*new_month = (new_month <= 0) ? 12 : new_month; */
      if (new_month <= 0)
      {
        new_month = 12; //no need to check max days, as feb max is 28 and dec max is 31
      }
      else
      {
        //have to check max days for new month
        cur_day = now.day();
        if (cur_day > aDaysInMonth[new_month - 1])
        {
          Serial.printf("%d Exceeds max days for new month (%d for %d)\n", cur_day, aDaysInMonth[new_month - 1], new_month);
          new_day = aDaysInMonth[new_month - 1];
        }
        else new_day = cur_day;
      }

      //newtime = DateTime(now.year(), new_month, now.day(), now.hour(), now.minute(), now.second());
      newtime = DateTime(now.year(), new_month, new_day, now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %2d:%2d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_DAY;
      ShowHighlightBar(ADJ_DAY);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_DAY:
    Serial.print("In AdjustTimeAndDate ADJ_DAY case\n");
    adjstate = ADJ_DAY;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_day = AdjustDayValue(now.month(), now.day() + 1); //not all months have same number of days
      newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      new_day = now.day() - 1;
      new_day = (new_day <= 0) ? aDaysInMonth[now.month() - 1] : new_day;
      newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_YEAR;
      ShowHighlightBar(ADJ_YEAR);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  case ADJ_YEAR:
    Serial.print("In AdjustTimeAndDate ADJ_YEAR case\n");
    adjstate = ADJ_YEAR;

    if (PlusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      newtime = DateTime(now.year() + 1, now.month(), now.day(), now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (MinusBox.TouchHit(Dp.x, Dp.y))
    {
      Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);
      Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());
      newtime = DateTime(now.year() - 1, now.month(), now.day(), now.hour(), now.minute(), now.second());
      Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());
      rtc.adjust(newtime);
      now = rtc.now();
      Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());
      ShowDateDisplay();
      delay(500);  //delay for a while to avoid multiple 'add' operations
    }
    else if (NextBox.TouchHit(Dp.x, Dp.y))
    {
      //Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);
      adjstate = ADJ_MONTH;
      ShowHighlightBar(ADJ_MONTH);
      delay(500); //prevent multiple NEXT transitions
    }
    break;
  default:
    break;
  }

  //Serial.printf("AdjustTimeAndDate(%d, %d) returns %d\n", Dp.x, Dp.y, (int)adjstate);
  return adjstate;
}

#pragma region Helper Functions
TS_Point GetTouchPointInDisplayCoords(TS_Point Tp)
{
  //Purpose:  Retrieve a touch point in display coordinate system
  //Inputs:
  //  Rotation value
  //  Mapping values
  //  TS_Point from touch chip
  //Outputs:
  //  TS_Point object containing touch (X,Y) in display coordinates
  //Plan:
  //  Step1: Retrieve touch point from touch chip
  //  Step2: Map to display coordinates taking rotation into account

//Step1: Retrieve touch point from touch chip
  //TS_Point Tp = ts.getPoint();
  TS_Point Dp;
  //Step2: Map to display coordinates taking rotation into account
#ifdef SCREEN_ORIENTATION_1
  Dp.x = map(Tp.x, TS_MAXX, TS_MINX, 0, tft.width());
  Dp.y = map(Tp.y, TS_MAXY, TS_MINY, 0, tft.height());
#else
#endif

  ////DEBUG!!
  //Serial.printf(" GetTouchPointInDisplayCoords: %lu\t%d\t%d\t%d\t%d\t%d\n",
  //  millis(), Tp.x, Tp.y, Tp.z, Dp.x, Dp.y);
  ////DEBUG!!

  return Dp;
}

void ShowAdjButtons()
{
  Serial.printf("In ShowAdjButtons\n");
  HideButtons();

  //03/13/21 new centering feature works great!
  NextBox.Draw(&tft, "NEXT", ILI9341_BLACK, Arial_20, true);
  PlusBox.Draw(&tft, "+", ILI9341_BLACK, Arial_40, true);
  MinusBox.Draw(&tft, "-", ILI9341_BLACK, Arial_40, true);
}

void HideButtons()
{
  PlusBox.Draw(&tft, ILI9341_BLACK);
  MinusBox.Draw(&tft, ILI9341_BLACK);
  NextBox.Draw(&tft, ILI9341_BLACK);
}

void ShowNormalTimeDisplay()
{
  //Serial.printf("In ShowNormalTimeDisplay\n");
  now = rtc.now();
  int hournum = now.hour();

  //guard against 1259->1300 && 2359->0000 transitions
  if (hournum > 12)
  {
    hournum -= 12;
  }
  else if (hournum == 0)
  {
    hournum += 12;
  }

  hournum = (hournum > 12) ? hournum - 12 : hournum;

  tft.setCursor(0, 100);
  TimeBox.Draw(&tft); //redraws black background

  tft.setTextColor(ILI9341_RED);
  tft.setFont(Arial_72);
  tft.setCursor(160, 120, true);//try the text centering feature
  tft.printf("%2d:%02d", hournum, now.minute());
}

void ShowLongTimeDisplay()
{
  //Serial.printf("In ShowLongTimeDisplay\n");
  now = rtc.now();
  tft.setTextColor(ILI9341_RED);
  tft.setCursor(160, 120, true);//try the text centering feature
  tft.setFont(Arial_60);
  TimeBox.Draw(&tft); //redraws black background

  int hournum = now.hour();

  //guard against 1259->1300 && 2359->0000 transitions
  if (hournum > 12)
  {
    hournum -= 12;
  }
  else if (hournum == 0)
  {
    hournum += 12;
  }

  hournum = (hournum > 12) ? hournum - 12 : hournum;

  tft.printf("%2d:%02d:%02d", hournum, now.minute(), now.second());
}


void ShowHighlightBar(AdjustmentState adjstate)
{
  switch (adjstate)
  {
  case ADJ_NONE:
    Serial.printf("ADJ_NONE case in ShowHighlightBox()\n");
    HideHighlightBars();
    break;
  case ADJ_HOUR:
    HideHighlightBars();
    HourHighlightBox.Draw(&tft);
    break;
  case ADJ_MIN:
    HideHighlightBars();
    MinuteHighlightBox.Draw(&tft);
    break;
  case ADJ_SEC:
    HideHighlightBars();
    SecondHighlightBox.Draw(&tft);
    break;
  case ADJ_DAYOFWEEK:
    break;
  case ADJ_MONTH:
    HideHighlightBars();
    MonthHighlightBox.Draw(&tft);
    break;
  case ADJ_DAY:
    HideHighlightBars();
    DayHighlightBox.Draw(&tft);
    break;
  case ADJ_YEAR:
    HideHighlightBars();
    YearHighlightBox.Draw(&tft);
    break;
  default:
    break;
  }
}

void HideHighlightBars()
{
  tft.fillRect(0, DATE_HIGHLIGHT_BOX_YLOC, ALL_DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);
  tft.fillRect(0, TIME_HIGHLIGHT_BOX_YLOC, ALL_TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);
}

void ShowDateDisplay()
{
  DateTime now = rtc.now();
  DateBox.Draw(&tft);
  tft.setTextColor(ILI9341_YELLOW);
  tft.setCursor(0, 0);
  //tft.setTextSize(3);
  tft.setFont(Arial_28);
  tft.printf("%s %02d/%02d/%02d\n",
    daysOfTheWeek[now.dayOfTheWeek()], now.month(), now.day(), now.year());
}

int AdjustDayValue(int month, int day)
{
  //Notes:
  //  07/13/21 rev to handle negative day values
  if (day > aDaysInMonth[month - 1])
  {
    Serial.printf("%d is greater than max days (%d) for this month - setting to 1\n", day, aDaysInMonth[month - 1]);
    return 1;
  }
  //07/13/21 bugfix
  else if (day <= 0)
  {
    int newdaynum = aDaysInMonth[month - 1];
    Serial.printf("%d is <= 0: set to max days (%d) for this month\n", day, newdaynum);
    return newdaynum;
  }
  else
  {
    return day;
  }
}
#pragma endregion Helper Functions

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Name: Teensy_LCDClockV4.ino

Created: 3/9/2021 11:12:31 AM

Author: FRANKNEWXPS15\Frank

This project was cloned from Teensy_LCDClockV3 to re-investigate the use of proportional fonts

#include <XPT2046_Touchscreen.h>

#include <ILI9341_t3n.h>

#include <Wire.h>

#include "RTClib.h"

#include "elapsedMillis.h"

#include "CustomBox.h"

#include "ili9341_t3n_font_Arial.h"

#define N0_DIAGNOSTICS

//****************************************************************************

// Settings and objects

//****************************************************************************

#pragma region DISPLAY_PIN_ASSIGNMENTS

//02/15/21 pin assignments from https://www.pjrc.com/store/display_ili9341_touch.html

#define TFT_DC 9

#define TFT_CS 10

#define TFT_RST 7

#define TFT_SCK 13

#define TFT_MISO 12

#define TFT_MOSI 11

#define TOUCH_CS 8

#pragma endregion DISPLAY_PIN_ASSIGNMENTS

XPT2046_Touchscreen ts(TOUCH_CS);

ILI9341_t3n tft = ILI9341_t3n(TFT_CS, TFT_DC, TFT_RST, TFT_MOSI, TFT_SCK, TFT_MISO);

elapsedMillis mSecSinceLastClockUpdate;

const int CLOCK_UPDATE_MSEC = 1000;

#pragma region DISP_AND_ADJ_BOX_PARAMETERS

// Size of the color selection boxes and the paintbrush size

#define MAX_DISPLAY_X 240

#define MAX_DISPLAY_Y 320

#define SCREEN_ORIENTATION_1

#define TS_MINX 600

#define TS_MINY 600

#define TS_MAXX 3758

#define TS_MAXY 3612

const int PLUSBOX_X = 20;

const int PLUSBOX_Y = 180;

const int PLUSBOX_WIDTH = 50;

const int PLUSBOX_HEIGHT = 50;

const int PLUSBOX_COLOR = ILI9341_BLUE;

const int MINUSBOX_X = 120;

const int MINUSBOX_Y = 180;

const int MINUSBOX_WIDTH = 50;

const int MINUSBOX_HEIGHT = 50;

const int MINUSBOX_COLOR = ILI9341_YELLOW;

const String nextstr = "NEXT";

const int nextstr_width = 70;

const int nextstr_height = 20;

const int NEXTBOX_X = 220;

const int NEXTBOX_Y = 180;

const int NEXTBOX_COLOR = ILI9341_GREEN;

const int NEXTBOX_WIDTH = 100;

const int NEXTBOX_HEIGHT = 50;

const int TIME_BOX_X = 0;

const int TIME_BOX_Y = 82;

const int TIME_BOX_WIDTH = 350;

const int TIME_BOX_HEIGHT = 80;

const int DATE_BOX_X = 0;

const int DATE_BOX_Y = 0;

const int DATE_BOX_WIDTH = 320;

const int DATE_BOX_HEIGHT = 30;

//03/05/21 used to hide adjustment boxes

const int ALL_ADJ_BOXES_WIDTH = NEXTBOX_X + NEXTBOX_WIDTH;

const int ALL_ADJ_BOXES_HEIGHT = 50;

const int TIME_HIGHLIGHT_BOX_WIDTH = 75;

const int TIME_HIGHLIGHT_BOX_HEIGHT = 5;

const int TIME_HIGHLIGHT_BOX_YLOC = 75;

const int ALL_TIME_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

const int DATE_HIGHLIGHT_BOX_WIDTH = 40;

const int DATE_HIGHLIGHT_BOX_HEIGHT = 5;

const int DATE_HIGHLIGHT_BOX_YLOC = 40;

const int ALL_DATE_HIGHLIGHT_BOX_WIDTH = ALL_ADJ_BOXES_WIDTH;

CustomBox PlusBox(PLUSBOX_X, PLUSBOX_Y, PLUSBOX_WIDTH, PLUSBOX_HEIGHT, PLUSBOX_COLOR);

CustomBox MinusBox(MINUSBOX_X, MINUSBOX_Y, MINUSBOX_WIDTH, MINUSBOX_HEIGHT, MINUSBOX_COLOR);

CustomBox NextBox(NEXTBOX_X, NEXTBOX_Y, NEXTBOX_WIDTH, NEXTBOX_HEIGHT, NEXTBOX_COLOR);

CustomBox HourHighlightBox(20, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox MinuteHighlightBox(120, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox SecondHighlightBox(230, TIME_HIGHLIGHT_BOX_YLOC, TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox MonthHighlightBox(72, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox DayHighlightBox(132, DATE_HIGHLIGHT_BOX_YLOC, DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox YearHighlightBox(178, DATE_HIGHLIGHT_BOX_YLOC, 90, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_WHITE);

CustomBox TimeBox(TIME_BOX_X, TIME_BOX_Y, TIME_BOX_WIDTH, TIME_BOX_HEIGHT, ILI9341_BLACK);

CustomBox DateBox(DATE_BOX_X, DATE_BOX_Y, DATE_BOX_WIDTH, DATE_BOX_HEIGHT, ILI9341_BLACK);

enum AdjustmentState

{

ADJ_NONE = 0,

ADJ_HOUR,

ADJ_MIN,

ADJ_SEC,

ADJ_DAYOFWEEK,

ADJ_MONTH,

ADJ_DAY,

ADJ_YEAR

};

const char AdjValNameArray[8][9] = { "ADJ_NONE", "ADJ_HOUR", "ADJ_MIN", "ADJ_SEC", "ADJ_DOW", "ADJ_MNTH", "ADJ_DAY", "ADJ_YEAR" };

int aDaysInMonth[] = { 31,28,31,30,31,30,31,31,30,31,30,31 };

AdjustmentState CurAdjState = ADJ_NONE;

const int TOUCH_TIMEOUT_MSEC = 5000; //reverts to regular display if no further touch input

elapsedMillis mSecSinceLastTouch; //timer for touch timout

#pragma endregion Display & Adj Box Parameters

#pragma region RTC Support

#define FORCE_RTC_TO_LAST_COMPILE_TIME //uncomment to manually set RTC to last compile time

RTC_DS3231 rtc;

char daysOfTheWeek[7][12] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };

DateTime now, lastTime;

char buffer[100];

int lasthour = 0; //02/15/21 added to refresh screen on the hour

struct tStamp

{

unsigned long mSec;

byte RTC_Status;

};

#define DS3231_ADDRESS 0x68 ///< I2C address for DS3231

#define DS3231_STATUSREG 0x0F ///< Status register

#define RTCStatArraySize 10

#define RTCStatTime_IntervalMsec 100

tStamp RTCStatArray[RTCStatArraySize];

#pragma endregion RTC Support

void setup()

{

Serial.begin(9600);

delay(3000);

Serial.println("Teensy 3.2 TFT Clock Program");

#pragma region DISPLAY INITIALIZATION

Serial.println("Initializing TFT display");

tft.begin();

// Note: you can now set the SPI speed to any value

// the default value is 30Mhz, but most ILI9341 displays

// can handle at least 60Mhz and as much as 100Mhz

// tft.setClock(60000000);

tft.fillScreen(ILI9341_BLACK);

tft.setTextColor(ILI9341_YELLOW);

tft.setTextSize(2);

tft.setRotation(1);

#pragma endregion region DISPLAY INITIALIZATION

#pragma region TFT DIAGNOSTICS

#ifndef N0_DIAGNOSTICS

// read diagnostics (optional but can help debug problems)

uint8_t x = tft.readcommand8(ILI9341_RDMODE);

Serial.print("Display Power Mode: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDMADCTL);

Serial.print("MADCTL Mode: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDPIXFMT);

Serial.print("Pixel Format: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDIMGFMT);

Serial.print("Image Format: 0x"); Serial.println(x, HEX);

x = tft.readcommand8(ILI9341_RDSELFDIAG);

Serial.print("Self Diagnostic: 0x"); Serial.println(x, HEX);

Serial.println(F("Benchmark Time (microseconds)"));

Serial.print(F("Screen fill "));

Serial.println(testFillScreen());

delay(200);

Serial.print(F("Text "));

Serial.println(testText());

delay(600);

Serial.print(F("Proportional Text "));

Serial.println(testProportionalText());

delay(600);

Serial.print(F("Lines "));

Serial.println(testLines(ILI9341_CYAN));

delay(200);

Serial.print(F("Horiz/Vert Lines "));

Serial.println(testFastLines(ILI9341_RED, ILI9341_BLUE));

delay(200);

Serial.print(F("Rectangles (outline) "));

Serial.println(testRects(ILI9341_GREEN));

delay(200);

Serial.print(F("Rectangles (filled) "));

Serial.println(testFilledRects(ILI9341_YELLOW, ILI9341_MAGENTA));

delay(200);

Serial.print(F("Circles (filled) "));

Serial.println(testFilledCircles(10, ILI9341_MAGENTA));

Serial.print(F("Circles (outline) "));

Serial.println(testCircles(10, ILI9341_WHITE));

delay(200);

Serial.print(F("Triangles (outline) "));

Serial.println(testTriangles());

delay(200);

Serial.print(F("Triangles (filled) "));

Serial.println(testFilledTriangles());

delay(200);

Serial.print(F("Rounded rects (outline) "));

Serial.println(testRoundRects());

delay(200);

Serial.print(F("Rounded rects (filled) "));

Serial.println(testFilledRoundRects());

delay(200);

Serial.println(F("Done!"));

#endif // !N0_DIAGNOSTICS

#pragma endregion region TFT DIAGNOSTICS

#pragma region RTC_SETUP

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

Serial.println("Initializing RTC...");

//tft.println("Initializing RTC...");

delay(1000);

if (!rtc.begin())

{

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

Serial.println("Couldn't find RTC");

tft.println("Couldn't find RTC");

while (1);

}

bool lp = rtc.lostPower();

Serial.print("lostPower() reports "); Serial.println(lp);

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

tft.printf("lostPower() = %d\n", lp);

delay(1000);

if (rtc.lostPower())

{

Serial.println("RTC lost power. Setting RTC to last compile time");

DateBox.Draw(&tft); //erase previous text

tft.setCursor(0, 0);

tft.println("RTC lost power. Setting RTC to last compile time");

// following line sets the RTC to the date & time this sketch was compiled

rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

}

#ifdef FORCE_RTC_TO_LAST_COMPILE_TIME

Serial.println("Forcing RTC to last compile time");

// following line sets the RTC to the date & time this sketch was compiled

rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

#endif //

//DateTime now = rtc.now();

now = rtc.now();

memset(buffer, '\0', 100);

GetDayDateTimeStringFromDateTime(now, buffer);

Serial.println("Retrieving Date/Time from RTC....");

Serial.print("Date String = "); Serial.println(buffer);

#pragma endregion RTC_SETUP

//DEBUG!!

//tft.println("Setting time to just before midnight");

//rtc.adjust(DateTime(2021, 02, 13, 00, 59, 45));

//DEBUG!!

//02/15/21 needed detect hour changes for screen refresh

now = rtc.now();

lasthour = now.hour();

mSecSinceLastClockUpdate = 0; //used to space out clock updates in loop()

}

void loop(void)

{

//Serial.printf("%lu: mSecSinceLastClockUpdate = %lu\n", millis(), (long int)mSecSinceLastClockUpdate);

delay(100);

//see if there is a touch anywhere

if (ts.touched())

{

mSecSinceLastTouch = 0; //reset the timeout watchdog

while (mSecSinceLastTouch < TOUCH_TIMEOUT_MSEC)

{

//Serial.printf("mSecSinceLastTouch = %lu\n", (unsigned long int)mSecSinceLastTouch);

TS_Point Tp = ts.getPoint();// Retrieve the touch point

if (Tp.z > 1000)

{

mSecSinceLastTouch = 0; //reset the timeout watchdog

TS_Point Dp = GetTouchPointInDisplayCoords(Tp);

CurAdjState = (AdjustmentState)AdjustTimeAndDate(Dp);

Serial.printf("Tp.z = %d: AdjustTimeAndDate(%d, %d) returns %s\n", Tp.z, Dp.x, Dp.y, AdjValNameArray[(int)CurAdjState]);

if (CurAdjState > ADJ_NONE)

{

ShowLongTimeDisplay();

ShowAdjButtons();

}

HideButtons();

HideHighlightBars();

ShowNormalTimeDisplay();

ShowDateDisplay();

CurAdjState = ADJ_NONE;

mSecSinceLastClockUpdate = 0;

}

if (mSecSinceLastClockUpdate > CLOCK_UPDATE_MSEC)

{

mSecSinceLastClockUpdate -= CLOCK_UPDATE_MSEC;

now = rtc.now();

ShowDateDisplay(); //Display day and date

//Display time

if (CurAdjState > ADJ_NONE)

{

ShowLongTimeDisplay();

}

else

{

ShowNormalTimeDisplay();

}

#pragma region DATE_TIME_FUNCTIONS

void GetDayDateTimeStringFromDateTime(DateTime dt, char* bufptr)

{

int mydayofweek = dt.dayOfTheWeek();

//mydayofweek = (mydayofweek < 0) ? 0 : mydayofweek; //guard for return of 0 from weekday()

int myday = dt.day();

int mymonth = dt.month();

int myyear = dt.year();

int myhour = dt.hour();

int mymin = dt.minute();

int mysec = dt.second();

char* dayofweek = (char*)daysOfTheWeek[mydayofweek];

sprintf(bufptr, "%s %4d/%02d/%02d at %02d:%02d:%02d", dayofweek, mymonth, myday, myyear, myhour, mymin, mysec);

}

void HourStringFromDateTime(DateTime dt, char* bufptr)

{

int hourval = dt.hour();

if (hourval > 12)

{

hourval -= 12;

}

//sprintf(bufptr, "%02d", hourval);

sprintf(bufptr, "%d", hourval);

}

void MinuteStringFromDateTime(DateTime dt, char* bufptr)

{

sprintf(bufptr, "%02d", dt.minute());

}

#pragma endregion DATE_TIME_FUNCTIONS

AdjustmentState AdjustTimeAndDate(TS_Point Dp)

{

AdjustmentState adjstate = ADJ_NONE;

DateTime newtime;

DateTime now = rtc.now();

int new_hour = 0; int new_minute = 0; int new_month = 0; int new_day = 0;

int cur_day = 0; //added 07/13/21

//Serial.printf("In AdjustTimeAndDate with CurAdjState = %d, at point (%d,%d)\n", CurAdjState, Dp.x, Dp.y);

switch (CurAdjState)

{

case ADJ_NONE:

if (TimeBox.TouchHit(Dp.x, Dp.y))

{

adjstate = ADJ_HOUR; //always start with hour

ShowHighlightBar(ADJ_HOUR);

}

else if (DateBox.TouchHit(Dp.x, Dp.y))

{

adjstate = ADJ_MONTH; //always start with month

ShowHighlightBar(ADJ_MONTH);

}

break;

case ADJ_HOUR:

Serial.print("In AdjustTimeAndDate ADJ_HOUR case\n");

adjstate = ADJ_HOUR;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_hour = now.hour() + 1;

if (new_hour >= 24)

{

new_hour -= 24;

}

newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_hour = now.hour() - 1;

if (new_hour < 0)

{

new_hour += 24;

}

newtime = DateTime(now.year(), now.month(), now.day(), new_hour, now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_MIN;

ShowHighlightBar(ADJ_MIN);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_MIN:

Serial.print("In AdjustTimeAndDate ADJ_MIN case\n");

adjstate = ADJ_MIN;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_minute = now.minute() + 1;

if (new_minute >= 60)

{

new_minute = 0;

}

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), new_minute, now.second());

Serial.printf("New time is %2d:%2d\n", newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %2d:%2d\n", now.day(), now.hour(), now.minute());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("ADJ_MIN case in DoMinusOp(). Decrementing Minute Value\n");

Serial.printf("Old time is %2d:%2d\n", now.hour(),now.minute());

new_minute = now.minute() - 1;

if (new_minute < 0)

{

Serial.printf("adjusting for 00/59 rollover\n");

new_minute = 59;

}

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), new_minute);

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("New time is %d:%d\n", now.hour(), now.minute());

Serial.printf("RTC now set to %2d:%2d\n", now.hour(), now.minute());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'decrement' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_SEC;

ShowHighlightBar(ADJ_SEC);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_SEC:

Serial.print("In AdjustTimeAndDate ADJ_SEC case\n");

adjstate = ADJ_SEC;

//both PLUS & MINUS operations simply reset seconds to zero

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);

Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute(), now.second());

newtime = DateTime(now.year(), now.month(), now.day(), now.hour(), now.minute(), 0);

Serial.printf("New time is %d/%d/%d %d:%d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute(), newtime.second());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute(), now.second());

ShowLongTimeDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_HOUR;

ShowHighlightBar(ADJ_HOUR);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_DAYOFWEEK:

break;

case ADJ_MONTH: //07/13/21 rev to watch for next/prev month max days

Serial.print("In AdjustTimeAndDate ADJ_MONTH case\n");

adjstate = ADJ_MONTH;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_month = now.month() + 1;

if (new_month > 12)

{

new_month = 1; //07/13/21 bugfix

}

//07/13/21 have to adjust if current dayval > max for new month

cur_day = now.day();

if (cur_day > aDaysInMonth[new_month - 1])

{

Serial.printf("%d Exceeds max days for new month (%d for %d)\n", cur_day, aDaysInMonth[new_month - 1], new_month);

new_day = aDaysInMonth[new_month - 1];

}

else

{

new_day = cur_day;

}

newtime = DateTime(now.year(), new_month, new_day, now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_month = now.month() - 1;

/*new_month = (new_month <= 0) ? 12 : new_month; */

if (new_month <= 0)

{

new_month = 12; //no need to check max days, as feb max is 28 and dec max is 31

}

else

{

//have to check max days for new month

cur_day = now.day();

if (cur_day > aDaysInMonth[new_month - 1])

{

Serial.printf("%d Exceeds max days for new month (%d for %d)\n", cur_day, aDaysInMonth[new_month - 1], new_month);

new_day = aDaysInMonth[new_month - 1];

}

else new_day = cur_day;

}

//newtime = DateTime(now.year(), new_month, now.day(), now.hour(), now.minute(), now.second());

newtime = DateTime(now.year(), new_month, new_day, now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %2d:%2d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_DAY;

ShowHighlightBar(ADJ_DAY);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_DAY:

Serial.print("In AdjustTimeAndDate ADJ_DAY case\n");

adjstate = ADJ_DAY;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_day = AdjustDayValue(now.month(), now.day() + 1); //not all months have same number of days

newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %d:%d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

new_day = now.day() - 1;

new_day = (new_day <= 0) ? aDaysInMonth[now.month() - 1] : new_day;

newtime = DateTime(now.year(), now.month(), new_day, now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %d:%d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_YEAR;

ShowHighlightBar(ADJ_YEAR);

delay(500); //prevent multiple NEXT transitions

}

break;

case ADJ_YEAR:

Serial.print("In AdjustTimeAndDate ADJ_YEAR case\n");

adjstate = ADJ_YEAR;

if (PlusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Plus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

newtime = DateTime(now.year() + 1, now.month(), now.day(), now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (MinusBox.TouchHit(Dp.x, Dp.y))

{

Serial.printf("Minus box touch at (%d,%d)\n", Dp.x, Dp.y);

Serial.printf("Old time is %d/%d/%d %2d:%2d\n", now.month(), now.day(), now.year(), now.hour(), now.minute());

newtime = DateTime(now.year() - 1, now.month(), now.day(), now.hour(), now.minute(), now.second());

Serial.printf("New time is %d/%d/%d %2d:%2d\n", newtime.month(), newtime.day(), newtime.year(), newtime.hour(), newtime.minute());

rtc.adjust(newtime);

now = rtc.now();

Serial.printf("RTC now set to %d/%d/%d %d:%d\n", now.day(), now.month(), now.year(), now.hour(), now.minute());

ShowDateDisplay();

delay(500); //delay for a while to avoid multiple 'add' operations

}

else if (NextBox.TouchHit(Dp.x, Dp.y))

{

//Serial.printf("Next box touch at (%d,%d)\n", Dp.x, Dp.y);

adjstate = ADJ_MONTH;

ShowHighlightBar(ADJ_MONTH);

delay(500); //prevent multiple NEXT transitions

}

break;

default:

break;

}

//Serial.printf("AdjustTimeAndDate(%d, %d) returns %d\n", Dp.x, Dp.y, (int)adjstate);

return adjstate;

}

#pragma region Helper Functions

TS_Point GetTouchPointInDisplayCoords(TS_Point Tp)

{

//Purpose: Retrieve a touch point in display coordinate system

//Inputs:

// Rotation value

// Mapping values

// TS_Point from touch chip

//Outputs:

// TS_Point object containing touch (X,Y) in display coordinates

//Plan:

// Step1: Retrieve touch point from touch chip

// Step2: Map to display coordinates taking rotation into account

//Step1: Retrieve touch point from touch chip

//TS_Point Tp = ts.getPoint();

TS_Point Dp;

//Step2: Map to display coordinates taking rotation into account

#ifdef SCREEN_ORIENTATION_1

Dp.x = map(Tp.x, TS_MAXX, TS_MINX, 0, tft.width());

Dp.y = map(Tp.y, TS_MAXY, TS_MINY, 0, tft.height());

#else

#endif

////DEBUG!!

//Serial.printf(" GetTouchPointInDisplayCoords: %lu\t%d\t%d\t%d\t%d\t%d\n",

// millis(), Tp.x, Tp.y, Tp.z, Dp.x, Dp.y);

////DEBUG!!

return Dp;

}

void ShowAdjButtons()

{

Serial.printf("In ShowAdjButtons\n");

HideButtons();

//03/13/21 new centering feature works great!

NextBox.Draw(&tft, "NEXT", ILI9341_BLACK, Arial_20, true);

PlusBox.Draw(&tft, "+", ILI9341_BLACK, Arial_40, true);

MinusBox.Draw(&tft, "-", ILI9341_BLACK, Arial_40, true);

}

void HideButtons()

{

PlusBox.Draw(&tft, ILI9341_BLACK);

MinusBox.Draw(&tft, ILI9341_BLACK);

NextBox.Draw(&tft, ILI9341_BLACK);

}

void ShowNormalTimeDisplay()

{

//Serial.printf("In ShowNormalTimeDisplay\n");

now = rtc.now();

int hournum = now.hour();

//guard against 1259->1300 && 2359->0000 transitions

if (hournum > 12)

{

hournum -= 12;

}

else if (hournum == 0)

{

hournum += 12;

}

hournum = (hournum > 12) ? hournum - 12 : hournum;

tft.setCursor(0, 100);

TimeBox.Draw(&tft); //redraws black background

tft.setTextColor(ILI9341_RED);

tft.setFont(Arial_72);

tft.setCursor(160, 120, true);//try the text centering feature

tft.printf("%2d:%02d", hournum, now.minute());

}

void ShowLongTimeDisplay()

{

//Serial.printf("In ShowLongTimeDisplay\n");

now = rtc.now();

tft.setTextColor(ILI9341_RED);

tft.setCursor(160, 120, true);//try the text centering feature

tft.setFont(Arial_60);

TimeBox.Draw(&tft); //redraws black background

int hournum = now.hour();

//guard against 1259->1300 && 2359->0000 transitions

if (hournum > 12)

{

hournum -= 12;

}

else if (hournum == 0)

{

hournum += 12;

}

hournum = (hournum > 12) ? hournum - 12 : hournum;

tft.printf("%2d:%02d:%02d", hournum, now.minute(), now.second());

}

void ShowHighlightBar(AdjustmentState adjstate)

{

switch (adjstate)

{

case ADJ_NONE:

Serial.printf("ADJ_NONE case in ShowHighlightBox()\n");

HideHighlightBars();

break;

case ADJ_HOUR:

HideHighlightBars();

HourHighlightBox.Draw(&tft);

break;

case ADJ_MIN:

HideHighlightBars();

MinuteHighlightBox.Draw(&tft);

break;

case ADJ_SEC:

HideHighlightBars();

SecondHighlightBox.Draw(&tft);

break;

case ADJ_DAYOFWEEK:

break;

case ADJ_MONTH:

HideHighlightBars();

MonthHighlightBox.Draw(&tft);

break;

case ADJ_DAY:

HideHighlightBars();

DayHighlightBox.Draw(&tft);

break;

case ADJ_YEAR:

HideHighlightBars();

YearHighlightBox.Draw(&tft);

break;

default:

break;

}

void HideHighlightBars()

{

tft.fillRect(0, DATE_HIGHLIGHT_BOX_YLOC, ALL_DATE_HIGHLIGHT_BOX_WIDTH, DATE_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);

tft.fillRect(0, TIME_HIGHLIGHT_BOX_YLOC, ALL_TIME_HIGHLIGHT_BOX_WIDTH, TIME_HIGHLIGHT_BOX_HEIGHT, ILI9341_BLACK);

}

void ShowDateDisplay()

{

DateTime now = rtc.now();

DateBox.Draw(&tft);

tft.setTextColor(ILI9341_YELLOW);

tft.setCursor(0, 0);

//tft.setTextSize(3);

tft.setFont(Arial_28);

tft.printf("%s %02d/%02d/%02d\n",

daysOfTheWeek[now.dayOfTheWeek()], now.month(), now.day(), now.year());

}

int AdjustDayValue(int month, int day)

{

//Notes:

// 07/13/21 rev to handle negative day values

if (day > aDaysInMonth[month - 1])

{

Serial.printf("%d is greater than max days (%d) for this month - setting to 1\n", day, aDaysInMonth[month - 1]);

return 1;

}

//07/13/21 bugfix

else if (day <= 0)

{

int newdaynum = aDaysInMonth[month - 1];

Serial.printf("%d is <= 0: set to max days (%d) for this month\n", day, newdaynum);

return newdaynum;

}

else

{

return day;

}

#pragma endregion Helper Functions

And then the ‘CustomBox’ class file (no .cpp file – everything is in the .h file)

#pragma once

#ifndef _ILI9341_t3NH_	
#include <ILI9341_t3n.h>
#endif // !_ILI9341_t3NH_

class CustomBox
{
public:
	int x;
	int y;
private:
	int w;
	int h;
	int color;
public:
	CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color);
	CustomBox(int in_w, int in_h, int in_color);
	void Draw(ILI9341_t3n* disp);
	void Draw(ILI9341_t3n* disp, char c, int txtcolor, int size);
	void Draw(ILI9341_t3n* disp, char c, int txtcolor, ILI9341_t3_font_t font, bool centered = false);
	void Draw(ILI9341_t3n* disp, String txt, int txtcolor, ILI9341_t3_font_t font, bool centered = false);
	void Draw(ILI9341_t3n* disp, String txt, int size);
	void Draw(ILI9341_t3n* disp, char* buff, int size);
	void Draw(ILI9341_t3n* disp, int color);
	bool TouchHit(int in_x, int in_y);
};


CustomBox::CustomBox(int in_w, int in_h, int in_color)
{
	x = 0;
	y = 0;
	w = in_w;
	h = in_h;
	color = in_color;
}

CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)
{
	x = in_x;
	y = in_y;
	w = in_w;
	h = in_h;
	color = in_color;
}

inline void CustomBox::Draw(ILI9341_t3n* disp)
{
	disp->fillRect(x, y, w, h, color);
}

inline void CustomBox::Draw(ILI9341_t3n* disp, char c, int txtcolor, ILI9341_t3_font_t font, bool centered)
{
	int txt_x = x;
	int txt_y = y;
	disp->setFont(font);
	if (centered)
	{
		txt_x = x + round((float)(w / 2.));
		txt_y = y + round((float)(h / 2.));
	}

	Serial.printf("txt cursor set to (%d,%d)\n", txt_x, txt_y);
	disp->fillRect(x, y, w, h, color);
	disp->setTextColor(txtcolor);
	disp->setCursor(txt_x, txt_y, centered);
	disp->print(c);
}

inline void CustomBox::Draw(ILI9341_t3n* disp, String txt, int txtcolor, ILI9341_t3_font_t font, bool centered)
{
	int txt_x = x;
	int txt_y = y;
	disp->setFont(font);
	if (centered)
	{
		txt_x = x + round((float)(w / 2.));
		txt_y = y + round((float)(h / 2.));
	}

	//Serial.printf("txt cursor set to (%d,%d)\n", txt_x, txt_y);
	disp->fillRect(x, y, w, h, color);
	disp->setTextColor(txtcolor);
	disp->setCursor(txt_x, txt_y, centered);
	disp->print(txt);
}


//class CustomBoxWithText :CustomBox
//{
//private:
//	char boxtext[6];
//public:
//	CustomBoxWithText(int in_x, int in_y, int in_w, int in_h, int in_color, char* txt);
//};
//
//
//CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)
//{
//	x = in_x;
//	y = in_y;
//	w = in_w;
//	h = in_h;
//	color = in_color;
//}

inline void CustomBox::Draw(ILI9341_t3n* disp, char c, int txtcolor, int size = 0)
{
	disp->fillRect(x, y, w, h, color);
	if (size==0)
	{
		size = round((float)h / 10.);
	}
	int char_x = x + round((float)w / 4.);
	//int char_x = x;
	disp->setCursor(char_x, y+size);
	disp->setTextSize(size);
	disp->setTextColor(txtcolor);
	disp->print(c);
}

inline void CustomBox::Draw(ILI9341_t3n* disp, String txt, int size)
{
	disp->fillRect(x, y, w, h, color);
	disp->setCursor(x, y);
	disp->setTextSize(size);
	disp->print(txt);
}

inline void CustomBox::Draw(ILI9341_t3n* disp, char* buff, int size)
{
	Serial.printf("In Draw() with buff = %s\n", buff);
	disp->fillRect(x, y, w, h, color);
	//disp->setCursor(x, y);
	disp->setTextSize(size);
	//disp->setTextDatum(MC_DATUM);
	//disp->drawString1(buff, strlen(buff), x, y);
	disp->drawString(buff, strlen(buff), x, y); //03/09/21 in latest library version drawString1 was made into an overload of drawString
}

inline void CustomBox::Draw(ILI9341_t3n* disp, int newcolor)
{
	disp->fillRect(x, y, w, h, newcolor);
}

inline bool CustomBox::TouchHit(int in_x, int in_y)
{
	//Purpose:  Determine if input coordinates are within a specified box
	//Inputs:
	//  in_x, in_y = integers denoting mapped touch coordinates
	//  box location & dimensions
	//Outputs:
	//  true if (in_x, in_y) falls within box region.  Othewise, false

	//Serial.printf("TouchHit(%d,%d), box (x,y,w,h) = (%d,%d,%d,%d)\n",
	//	in_x, in_y, x, y, w, h);

	return (in_x > x && in_y > y && in_x < x + w && in_y < y + h);
}

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#pragma once

#ifndef _ILI9341_t3NH_

#include <ILI9341_t3n.h>

#endif // !_ILI9341_t3NH_

class CustomBox

{

public:

int x;

int y;

private:

int w;

int h;

int color;

public:

CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color);

CustomBox(int in_w, int in_h, int in_color);

void Draw(ILI9341_t3n* disp);

void Draw(ILI9341_t3n* disp, char c, int txtcolor, int size);

void Draw(ILI9341_t3n* disp, char c, int txtcolor, ILI9341_t3_font_t font, bool centered = false);

void Draw(ILI9341_t3n* disp, String txt, int txtcolor, ILI9341_t3_font_t font, bool centered = false);

void Draw(ILI9341_t3n* disp, String txt, int size);

void Draw(ILI9341_t3n* disp, char* buff, int size);

void Draw(ILI9341_t3n* disp, int color);

bool TouchHit(int in_x, int in_y);

};

CustomBox::CustomBox(int in_w, int in_h, int in_color)

{

x = 0;

y = 0;

w = in_w;

h = in_h;

color = in_color;

}

CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)

{

x = in_x;

y = in_y;

w = in_w;

h = in_h;

color = in_color;

}

inline void CustomBox::Draw(ILI9341_t3n* disp)

{

disp->fillRect(x, y, w, h, color);

}

inline void CustomBox::Draw(ILI9341_t3n* disp, char c, int txtcolor, ILI9341_t3_font_t font, bool centered)

{

int txt_x = x;

int txt_y = y;

disp->setFont(font);

if (centered)

{

txt_x = x + round((float)(w / 2.));

txt_y = y + round((float)(h / 2.));

}

Serial.printf("txt cursor set to (%d,%d)\n", txt_x, txt_y);

disp->fillRect(x, y, w, h, color);

disp->setTextColor(txtcolor);

disp->setCursor(txt_x, txt_y, centered);

disp->print(c);

}

inline void CustomBox::Draw(ILI9341_t3n* disp, String txt, int txtcolor, ILI9341_t3_font_t font, bool centered)

{

int txt_x = x;

int txt_y = y;

disp->setFont(font);

if (centered)

{

txt_x = x + round((float)(w / 2.));

txt_y = y + round((float)(h / 2.));

}

//Serial.printf("txt cursor set to (%d,%d)\n", txt_x, txt_y);

disp->fillRect(x, y, w, h, color);

disp->setTextColor(txtcolor);

disp->setCursor(txt_x, txt_y, centered);

disp->print(txt);

}

//class CustomBoxWithText :CustomBox

//{

//private:

// char boxtext[6];

//public:

// CustomBoxWithText(int in_x, int in_y, int in_w, int in_h, int in_color, char* txt);

//};

//CustomBox::CustomBox(int in_x, int in_y, int in_w, int in_h, int in_color)

//{

// x = in_x;

// y = in_y;

// w = in_w;

// h = in_h;

// color = in_color;

//}

inline void CustomBox::Draw(ILI9341_t3n* disp, char c, int txtcolor, int size = 0)

{

disp->fillRect(x, y, w, h, color);

if (size==0)

{

size = round((float)h / 10.);

}

int char_x = x + round((float)w / 4.);

//int char_x = x;

disp->setCursor(char_x, y+size);

disp->setTextSize(size);

disp->setTextColor(txtcolor);

disp->print(c);

}

inline void CustomBox::Draw(ILI9341_t3n* disp, String txt, int size)

{

disp->fillRect(x, y, w, h, color);

disp->setCursor(x, y);

disp->setTextSize(size);

disp->print(txt);

}

inline void CustomBox::Draw(ILI9341_t3n* disp, char* buff, int size)

{

Serial.printf("In Draw() with buff = %s\n", buff);

disp->fillRect(x, y, w, h, color);

//disp->setCursor(x, y);

disp->setTextSize(size);

//disp->setTextDatum(MC_DATUM);

//disp->drawString1(buff, strlen(buff), x, y);

disp->drawString(buff, strlen(buff), x, y); //03/09/21 in latest library version drawString1 was made into an overload of drawString

}

inline void CustomBox::Draw(ILI9341_t3n* disp, int newcolor)

{

disp->fillRect(x, y, w, h, newcolor);

}

inline bool CustomBox::TouchHit(int in_x, int in_y)

{

//Purpose: Determine if input coordinates are within a specified box

//Inputs:

// in_x, in_y = integers denoting mapped touch coordinates

// box location & dimensions

//Outputs:

// true if (in_x, in_y) falls within box region. Othewise, false

//Serial.printf("TouchHit(%d,%d), box (x,y,w,h) = (%d,%d,%d,%d)\n",

// in_x, in_y, x, y, w, h);

return (in_x > x && in_y > y && in_x < x + w && in_y < y + h);

}

Stay tuned,

Frank

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Paynter's Palace

ILI9341-Based Digital Clock Project

7 March 2021 Update:

10 March 2021 Update:

14 July 2021 Update:

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