kokospalme/DMXWire

kokospalme/DMXWire

DMXWire

kokospalme/DMXWire

Arduino Library to send and receive DMX over I2C/Wire library Shield:

This work is licensed under a Creative Commons Attribution 4.0 International License.

• uses interrupt handling from Ticker library (works)
• timing: 16...18ms for transmitting 512 bytes in 16+1 packets

ToDos

• threadsafety with mutex (like in DMX library: https://github.com/luksal/ESP32-DMX) for multicore cpus
• settings over Wire
• Wiki pages
• I2C transaction with locks (also threadsafety)
• works with other libraries?! (DMX512 & NRF24 from https://forum.arduino.cc/t/transmitting-receiving-dmx-using-nrf24l01-radio-transceivers/203255)

Tests & examples

Code

• MasterTX_LC1_faderdemo.ino: sucessfully tested on ESP32
• SlaveRX_esp32.ino: sucessfully tested on ESP32 C3
• SlaveRX_TX512_simple.ino: sucessfully tested on ESP32 C3 with full 512 channel

Schematic (LC1 DMX board)

• DMX schematic inspired by http://www.mathertel.de/Arduino/DMXShield.aspx

used libraries

Many thanks to Khoih-prog and luksal!

• https://github.com/espressif/arduino-esp32/tree/master/libraries/Ticker
• https://github.com/espressif/arduino-esp32/tree/master/libraries/Wire
• https://github.com/khoih-prog/ESP32TimerInterrupt
• fork of https://github.com/luksal/ESP32-DMX