Portable LIN Master Node Emulation
This Arduino library implements a Local Interconnect Master node emulation. For an explanation of the LIN bus and protocol e.g. see https://en.wikipedia.org/wiki/Local_Interconnect_Network.
The class structure is very flexible and aims at supporting different Serial interfaces and architectures. It can easily be ported to other boards - in which case a pull request is highly appreciated...
Supported functionality:
- blocking and non-blocking operation
- multiple, simultaneous LIN nodes
- supports HardwareSerial and SoftwareSerial, if available
Supported Boards (with additional LIN hardware):
- AVR boards, e.g. Arduino Uno, Mega or Nano
- ATtiny boards, e.g. Adafruit Trinket
- SAM boards, e.g. Arduino Due
- ESP32 boards, e.g. Espressif Wroom-32U
- ESP8266 boards, Wemos D1 mini
Test Matrix:
Notes:
- The sender state machine relies on reading back its 1-wire echo. If no LIN or K-Line transceiver is used, connect Rx&Tx (only on same device!)
- for background operation, the
handler()method must be called at least every 1ms, especially after initiating a frame - For SoftwareSerial on ESP32 install ESPSoftwareSerial and uncomment "defined(ARDUINO_ARCH_ESP32)" at top of src/LIN_master_SoftwareSerial.cpp
Have fun!, Georg