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node-red-contrib-mpr121

1.0.0 • Public • Published

node-red-contrib-mpr121

Nodes for interacting with MPR121

The package provide two different node:

  • mpr121-i: Interrupt driven node
  • mpr121-p: Polling driven node

Install

npm istall node-red-contrib-mpr121

Interrupt

The interrupt node provide a 12 different output, one per pin.

The output send two different message, one for touch, one for release.

The payload contains two values:

  • type: the type of event [touch, release]
  • pin: the number of the pin [0..11]

Message for touch event

var msg = {
  payload : {
    type : "touch",
    pin : pin
  }
}

Message for release event

var msg = {
  payload : {
    type : "release",
    pin : pin
  }
}

Usage

Add the node like this

mpr121-i

Polling

The polling node provide a 12 different output, one per pin.

The output send three different message, one for touch, one for release and one for value.

The payload contains two values:

  • type: the type of event [touch, release, value]
  • pin: the number of the pin [0..11]

Message for touch event

var msg = {
  payload : {
    type : "touch",
    pin : pin
  }
}

Message for release event

var msg = {
  payload : {
    type : "release",
    pin : pin
  }
}

Message for value event

var msg = {
  payload : {
    type : "value",
    pin : element
  }
}

Usage

Add the node like this

mpr121-i

Install

npm i node-red-contrib-mpr121

DownloadsWeekly Downloads

2

Version

1.0.0

License

MIT

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