node-red-contrib-mpr121 1.0.0

Node for interacting with MPR121

npm install node-red-contrib-mpr121

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

##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