This library provides abstractions that help you write event-driven Arduino and mbed applications. It has device abstractions that allow you to treat device pins, PCF8574, MCP23017, MPR121 and AW9523 almost the same in code. This includes higher level interrupt management, buttons with de-bouncing, matrix keyboards, rotary encoders and even LiquidCrystalIO. There are many examples packaged with the library that cover most use cases.
For development, you can use any Arduino or mbed IDE. However, our recommendation is platformIO with Clion or VS Code. We test the library with Arduino and PlatformIO.
Need help with a commercial design, or want a customised version for your hardware, see the consultancy link at the top of the page?
Reference guide and code repo
Digital IO for Arduino and mbed
- Arduino & mbed digital IO on Pins, IO Expanders and shift registers
- PCF8574 I2C Io Expander
- MCP23017 I2C IoExpander
- AW9523 I2C IoExpander with LED Control
- MPR121 I2C IoExpander with Touch and LED control
- Using MultiIo - more than one IO on the same abstraction
- Abstracted I2C/Wire on Arduino and mbed
Analog IO for Arduino and mbed
- Using the analog abstraction for ADC/PWM/DACs
- Raising events on Analog input
- Ioa Extras - extra Analog devices
Switches, keyboards and rotary encoders
- Using switches and rotary encoders for debounced input
- Using the keyboard manager for matrix style keyboards and keypads
- Touch screen interfaces for Arduino and mbed
- Analog Joysticks for Arduino and mbed
- Tutorial: Using switches for event based button presses
- Example: Rotary encoder and buttons on PCF8574 with interrupt
EEPROM abstractions
Logging, text utilities and unit testing helper classes
- Arduino logging with IoAbstraction
- Text Utilities and helpers
- Troubleshooting, IoAbstraction mock implementations
Arduino logging using io-logging
Logging is part of the TcMenu offering provided by library , it has a moderately complete logging framework that is still lightweight enough to work on small boards. It can easily be turned off completely for very small boards too. TaskManagerIO, IoAbstraction and tcMenu use this logging to provide information about internal state and operations. You can also use this logging...
IoAbstraction - Cross platform build support
General Arduino On all devices we try to configure the device to the highest precision possible, and provide read and write methods based on float values between 0 and 1. Notes for mbed For mbed we support mbed V5 and V6 Bare-Metal and RTOS. Pins are managed using the underlying gpio methods. Interrupts are managed using . Analog input PWM output,...
Using Arduino Pins and Io Expanders at the same time
Sometimes there is a need for more IO than can be catered for using an single set of pins, even on the MEGA, or maybe you just want to combine Arduino pins with some pins on an PCF8574 IO expander chip. In this case IoAbstraction now supports that, you create an abstraction of type . See the sketch that has Arduino...
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We build and maintain an embedded menu designer and framework that works on many platforms.
