Proposal to add features into node-red-nodes/hardware/intel/mraa-gpio-din.js

In siemens github for iot2050 project there plenty patches for some mraa intel nodes which could be useful for community. For now it's about gpio-din only and here patches I can propose:

  1. clean up on close
  2. extend GPIO numbers in select menu
  3. add configurable GPIO mode for DIN with select menu for it
  4. add support for initial message, this provides check button on node which sends status of DIN on start

Anything else need to be added here?

Sounds useful. Please create a pull request

done, mraa gpio din features by fr0st61te · Pull Request #929 · node-red/node-red-nodes · GitHub

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Great. I’m currently travelling but will review asap (probably weekend)

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