Move to PlatformIO

- [x]  Move project to platformIO
- [x]  Bug rectangle on screen when 1milion shares
- [x]  Bug memory leaks
- [x]  Bug Reboots when received JSON contains some null values
- Readme update with build troubleshooting
TODO
- [ ]  Improve hashrate using Blockstream Jade miner code
- [ ]  Add blockHeight to screen
- [ ]  Add new screen with global mining stats
- [ ]  Add support to control BM1397

.gitignore

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+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch

.vscode/extensions.json

@@ -0,0 +1,10 @@
+{
+    // See http://go.microsoft.com/fwlink/?LinkId=827846
+    // for the documentation about the extensions.json format
+    "recommendations": [
+        "platformio.platformio-ide"
+    ],
+    "unwantedRecommendations": [
+        "ms-vscode.cpptools-extension-pack"
+    ]
+}

Lib/TFT_eSPI/.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Custom for Visual Studio
+*.cs     diff=csharp
+
+# Standard to msysgit
+*.doc	 diff=astextplain
+*.DOC	 diff=astextplain
+*.docx diff=astextplain
+*.DOCX diff=astextplain
+*.dot  diff=astextplain
+*.DOT  diff=astextplain
+*.pdf  diff=astextplain
+*.PDF	 diff=astextplain
+*.rtf	 diff=astextplain
+*.RTF	 diff=astextplain

Lib/TFT_eSPI/.github/ISSUE_TEMPLATE/issue-template.md

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+---
+name: Issue template
+about: Guide to content
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Only raise issues for problems with the library and/or provided examples. Post questions, comments and useful tips etc in the "Discussions" section.
+
+To minimise effort to resolve issues the following should be provided as a minimum:
+1. A description of the problem and the conditions that cause it to occur
+2. IDE (e.g. Arduino or PlatformIO)
+3. TFT_eSPI library version (try the latest, the problem may have been resolved!) from the Manage Libraries... menu
+4. Board package version (e.g. 2.0.3) available from the Boards Manager... menu
+5. Procesor, e.g RP2040, ESP32 S3 etc
+6. TFT driver (e.g. ILI9341), a link to the vendors product web page is useful too.
+7. Interface type (SPI or parallel)
+
+Plus further information as appropriate to the problem:
+1. TFT to processor connections used
+2. A zip file containing your setup file (just drag and drop in message window - do not paste in long files!)
+3. A zip file  containing a simple and complete example sketch that demonstrates the problem but needs no special hardware sensors or libraries.
+4. Screen shot pictures showing the problem  (just drag and drop in message window)
+
+The idea is to provide sufficient information so I can setup the exact same (or sufficiently similar) scenario to investigate and resolve the issue without having a tedious ping-pong of Q&A.
+
+DO NOT paste code directly into the issue. To correctly format code put three ticks ( ` character on key next to "1" key) at the start and end of short pasted code segments to avoid format/markup anomolies. [See here:](https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#quoting-code)
+
+Example output:
+
+```
+  Serial.begin(115200);
+  tft.init();
+```

Lib/TFT_eSPI/.gitignore

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+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# Arduino debug
+debug.cfg
+debug_custom.json
+*.svd
+
+# =========================
+# Operating System Files
+# =========================
+
+# OSX
+# =========================
+
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk

Lib/TFT_eSPI/CMakeLists.txt

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+
+idf_component_register(SRCS "TFT_eSPI.cpp"
+                    INCLUDE_DIRS "."
+                    PRIV_REQUIRES arduino)

Lib/TFT_eSPI/Extensions/Button.cpp

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+/***************************************************************************************
+** Code for the GFX button UI element
+** Grabbed from Adafruit_GFX library and enhanced to handle any label font
+***************************************************************************************/
+TFT_eSPI_Button::TFT_eSPI_Button(void) {
+  _gfx       = nullptr;
+  _xd        = 0;
+  _yd        = 0;
+  _textdatum = MC_DATUM;
+  _label[9]  = '\0';
+  currstate = false;
+  laststate = false;
+}
+
+// Classic initButton() function: pass center & size
+void TFT_eSPI_Button::initButton(
+ TFT_eSPI *gfx, int16_t x, int16_t y, uint16_t w, uint16_t h,
+ uint16_t outline, uint16_t fill, uint16_t textcolor,
+ char *label, uint8_t textsize)
+{
+  // Tweak arguments and pass to the newer initButtonUL() function...
+  initButtonUL(gfx, x - (w / 2), y - (h / 2), w, h, outline, fill,
+    textcolor, label, textsize);
+}
+
+// Newer function instead accepts upper-left corner & size
+void TFT_eSPI_Button::initButtonUL(
+ TFT_eSPI *gfx, int16_t x1, int16_t y1, uint16_t w, uint16_t h,
+ uint16_t outline, uint16_t fill, uint16_t textcolor,
+ char *label, uint8_t textsize)
+{
+  _x1           = x1;
+  _y1           = y1;
+  _w            = w;
+  _h            = h;
+  _outlinecolor = outline;
+  _fillcolor    = fill;
+  _textcolor    = textcolor;
+  _textsize     = textsize;
+  _gfx          = gfx;
+  strncpy(_label, label, 9);
+}
+
+// Adjust text datum and x, y deltas
+void TFT_eSPI_Button::setLabelDatum(int16_t x_delta, int16_t y_delta, uint8_t datum)
+{
+  _xd        = x_delta;
+  _yd        = y_delta;
+  _textdatum = datum;
+}
+
+void TFT_eSPI_Button::drawButton(bool inverted, String long_name) {
+  uint16_t fill, outline, text;
+
+  if(!inverted) {
+    fill    = _fillcolor;
+    outline = _outlinecolor;
+    text    = _textcolor;
+  } else {
+    fill    = _textcolor;
+    outline = _outlinecolor;
+    text    = _fillcolor;
+  }
+
+  uint8_t r = min(_w, _h) / 4; // Corner radius
+  _gfx->fillRoundRect(_x1, _y1, _w, _h, r, fill);
+  _gfx->drawRoundRect(_x1, _y1, _w, _h, r, outline);
+
+  if (_gfx->textfont == 255) {
+    _gfx->setCursor(_x1 + (_w / 8),
+                    _y1 + (_h / 4));
+    _gfx->setTextColor(text);
+    _gfx->setTextSize(_textsize);
+    _gfx->print(_label);
+  }
+  else {
+    _gfx->setTextColor(text, fill);
+    _gfx->setTextSize(_textsize);
+
+    uint8_t tempdatum = _gfx->getTextDatum();
+    _gfx->setTextDatum(_textdatum);
+    uint16_t tempPadding = _gfx->getTextPadding();
+    _gfx->setTextPadding(0);
+
+    if (long_name == "")
+      _gfx->drawString(_label, _x1 + (_w/2) + _xd, _y1 + (_h/2) - 4 + _yd);
+    else
+      _gfx->drawString(long_name, _x1 + (_w/2) + _xd, _y1 + (_h/2) - 4 + _yd);
+
+    _gfx->setTextDatum(tempdatum);
+    _gfx->setTextPadding(tempPadding);
+  }
+}
+
+bool TFT_eSPI_Button::contains(int16_t x, int16_t y) {
+  return ((x >= _x1) && (x < (_x1 + _w)) &&
+          (y >= _y1) && (y < (_y1 + _h)));
+}
+
+void TFT_eSPI_Button::press(bool p) {
+  laststate = currstate;
+  currstate = p;
+}
+
+bool TFT_eSPI_Button::isPressed()    { return currstate; }
+bool TFT_eSPI_Button::justPressed()  { return (currstate && !laststate); }
+bool TFT_eSPI_Button::justReleased() { return (!currstate && laststate); }

Lib/TFT_eSPI/Extensions/Button.h

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+/***************************************************************************************
+// The following button class has been ported over from the Adafruit_GFX library so
+// should be compatible.
+// A slightly different implementation in this TFT_eSPI library allows the button
+// legends to be in any font, allow longer labels and to adjust text positioning
+// within button
+***************************************************************************************/
+
+class TFT_eSPI_Button : public TFT_eSPI {
+
+ public:
+  TFT_eSPI_Button(void);
+  // "Classic" initButton() uses centre & size
+  void     initButton(TFT_eSPI *gfx, int16_t x, int16_t y,
+  uint16_t w, uint16_t h, uint16_t outline, uint16_t fill,
+  uint16_t textcolor, char *label, uint8_t textsize);
+
+  // New/alt initButton() uses upper-left corner & size
+  void     initButtonUL(TFT_eSPI *gfx, int16_t x1, int16_t y1,
+  uint16_t w, uint16_t h, uint16_t outline, uint16_t fill,
+  uint16_t textcolor, char *label, uint8_t textsize);
+
+  // Adjust text datum and x, y deltas
+  void     setLabelDatum(int16_t x_delta, int16_t y_delta, uint8_t datum = MC_DATUM);
+
+  void     drawButton(bool inverted = false, String long_name = "");
+  bool     contains(int16_t x, int16_t y);
+
+  void     press(bool p);
+  bool     isPressed();
+  bool     justPressed();
+  bool     justReleased();
+
+ private:
+  TFT_eSPI *_gfx;
+  int16_t  _x1, _y1; // Coordinates of top-left corner of button
+  int16_t  _xd, _yd; // Button text datum offsets (wrt centre of button)
+  uint16_t _w, _h;   // Width and height of button
+  uint8_t  _textsize, _textdatum; // Text size multiplier and text datum for button
+  uint16_t _outlinecolor, _fillcolor, _textcolor;
+  char     _label[10]; // Button text is 9 chars maximum unless long_name used
+
+  bool  currstate, laststate; // Button states
+};