Copyright (c) 2014 [email protected]

Simple and concise Embedded Menu System for Arduino.

Please check out the comprehensive example applications.

Note: This has been developed and tested with Arduino 1.5.x only.

TODO

• Only three core methods, navigate(), invoke() and render(),
• plus simple helpers for navigation: next(), prev(), parent() and child().

• You simply implement a handler for your
  • Clickwheels, Encoders (see examples)
  • < > Buttons
• that will call navigate() with any of the helpers as an argument, depending on direction intended (e.g. navigate(child()) or navigate(next())).

• Usable with any display: Text LCD, Graphic LCD, Serial Port, ...
• Any menu type: vertical or horizontal, circular, ...
  • you only need to implement one method capable of rendering a single menu item

Handles all events, eg.

• Show the menu item label
  • can also be used to display current sensor data instead of the static text label
• Display the menu widget
  • this is where you'd implement your 'widget', the actual funcktionality associate with a menu item
• Trigger at the menu item
  • invoked when the user selects the item again, if already active
  • useful for:
    • save
    • accept calibration data when displaying live values
    • switching between two options or functions within a single menu item
      • e.g. to configure precision and unit for numeric values in a single menu (000.0 -> 00.00 -> 0.000 mV -> V -> kV
        • so you see a live preview 00.00kW or 000.0mV
• Before Move to Parent (or exit the menu)
  • for instance to call a save method when you exit
  • the return value determines if the user can move to the parent or not, useful to handle unsave data
• Stores menu data in Flash, saving RAM

Clone this repository or download the current version as an archive, copy or link it to your Arduino libraries folder, e.g. ~/Documents/Arduino/libraries on a Mac, then restart the Arduino IDE.

The code base resides in it's own namespace Menu. So you need to either prefix all methods with Menu:: or add using namespace Menu; somewhere in your code. I prefer to be explicit by opting for the prefix.

Begin with a dummy exit menu item. With it, you can utilize all events and functions, e.g. the parent event will be invoked, allowing you to save all data when you leave the menu or even prevent to leave. Also, you can simply clear the display when the user leaves the menu. The arguments to the macro MenuItem are: Name, Label, Next, Previous, Parent, Child, Callback. If you have no child or sibling or parent, substitute with Menu::NullItem, this is a typesafe replacement for NULL

MenuItem(miExit, "", Menu::NullItem, Menu::NullItem, Menu::NullItem, miSettings, menuExit);
    MenuItem(miSettings, "Settings", miTest1, Menu::NullItem, miExit, miCalibrateLo, menuDummy);
      MenuItem(miCalibrateLo,  "Calibrate Lo", miCalibrateHi,  Menu::NullItem,       miSettings, Menu::NullItem, menuDummy);
      MenuItem(miCalibrateHi,  "Calibrate Hi", miChannel0, miCalibrateLo,  miSettings, Menu::NullItem, menuDummy);

This example is for a 4-line text LCD, usable with the LiquidCrystal library shipped with Arduino.

void renderMenuItem(const Menu::Item_t *mi, uint8_t pos) {
    lcd.setCursor(0, pos);
    lcd.print(engine->label(mi));
}

 bool myMenuItemCallback(Menu::Action_t act) {
  switch (act) {
    case actionParent: 
      saveAll();
      return true; // return false to prevent navigation to parent
      break;
    case actionTrigger:
      adcSaveCalibrationData();
      break;
  }
}

TODO: Image LCD and TFT Boards

The MIT License (MIT)

Copyright (c) 2014 [email protected]
All rights reserved.

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of this software and associated documentation files (the "Software"), to deal
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