A menu library and designer UI for Arduino TcMenu is made up of a menu library for the Arduino platform, along with a designer UI and IoT remote control facilities. These include a remote control App (soon to renamed embedCONTROL), an API and a documented protocol. IOAbstraction library is used to provide event driven menus that can be controlled both on device and remotely. EEPROM storage is also supported for loading and saving state.
Timed blink is a version of well known Arduino blink example that is shipped with the standard IDE, but is redesigned to use the Abstraction and timer library. Example circuit for the code is exactly the same a blink, and if you use the inbuilt LED pin (which it does by default) then there’s no need to build any circuit whatsoever. Instead of using delay() calls to set the duration of the led flash, it uses the task management library to schedule a task.
Using the LEDDisplay library LEDDisplay is an easy to use library that makes light work of multi-digit 7segment displays. If you need help building the circuit or understanding the concepts, then refer to this guide: Arduino multiple digit, 7 segment display tutorial. Answering questions and getting help Get help from the community forum for LEDDisplay You can also contact us about commercial support on LEDDisplay Setting up the LEDDisplay library Before using any methods from the library, and usually in the global scope (outside of any function) you need to include the header file and initialise the library.
An I2C LCD backpack based on the PCF8574 chip provides an easy way to get started with LiquidCrystalIO on most Arduino boards. It is usually in one of two configurations as listed below. This library works correctly with the display and even has a shorthand way of creating the LCD for this case. Connectivity combinations for i2c backpacks Pin Option1 Option2 0 RS EN 1 RW RW 2 EN RS 3 Backlight Backlight 4 D4 D4 5 D5 D5 6 D6 D6 7 D7 D7 Construction for Option 1 outside of any functions (global):
There are often cases when you’ll need to run a micro controller from a battery power source. Unlike when running from mains power, every milli-amp matters. In these cases IoAbstraction’s task manager is able to integrate easily with most low power libraries. Task manager works by repeatedly calling the runLoop() function within loop() or main, during each loop task manager evaluates if any tasks are yet ready to run, and if they are it runs them.
TcMenu supports a wide range of rendering devices, from HD44780 based units using our LiquidCrystal fork through to mono OLED’s and full colour TFT displays using the Adafruit_GFX library. In order to achieve such a wide range of displays the renderer describes things in terms of menu items, active positions, editors and dialogs. This allows each renderer to convert these concepts into something that works for it’s needs. TitleWidget for presenting state in icon form For all displays including LiquidCrystal we support the concept of title widgets.
It is possible to secure sub-menus in tcMenu by setting the secured switch in the designer UI. Once this is done, and as long as there is an authenticator within your sketch that is assigned to the menu manager, then there is nothing else to do. First, during the design phase, ensure that you select to secure the sub-menu. It is recommended that such menus are marked as local only, so they cannot be sent remotely:
Using a matrix keyboard with TcMenu is straightforward, we use the IoAbstraction Keyboard Manager component to handle the keyboard, along with a custom listener for tcMenu that feeds the menu manager with appropriate events upon key presses. This library allows you to connect your keyboard either using Arduino pin, or any supported IoAbstraction such as the I2C PCF8574 or MCP23017. Setting up the menu sketch for a Matrix Keyboard Step 1 is to wire up your keyboard in accordance with the above linked keyboard manager page, I recommend at this point testing it through the packaged IoAbstraction example.
TcMenu has considerable out of the box remote connectivity on Arduino. Supporting Ethernet2 library, UipEthernet library, ESP8266 WiFi, ESP32 WiFi and Serial (including Bluetooth Serial). It is recommended that this guide is read in conjunction with the embedded library reference docs. A typical remote menu application designed using the library will be able to accept connections from any source that can communicate using TagVal protocol. On the Arduino side, there will be an object instance named remoteServer provided by the plugin.
IoAbstraction has full support for interrupts on most devices, meaning we can connect a Rotary Encoder to an Arduino using a standard PCF8574 IO expander chip. In order to do this we need the PCF8574 /INT line to be connected to an Arduino pin that supports interrupts (such as pins 2 or 3). Further, you can also have switches handle push button input without polling, by initialising for interrupt, especially useful with IO exapnders.