smartpad

A module to help tinkerers use the MiDiPLUS SmartPAD for their own projects.
This module only supports Linux and has only been tested on Ubuntu 18.04 with node 10.13.0.

This module works best in the Clip and Set modes. Mode 1 and Mode 2 are not supported, at this time.

Install

Using npm:

$ npm install smartpad

Usage

To use the module, a MiDiPLUS SmartPAD must be connected to the device.

Buttons are number 0-63, where button 0 is upper-left and button 63 is lower-right.
Row 1 is buttons 0-7
Row 2 is buttons 8-15
etc...

Knob are identified 0-7 and values are 0-127

const smartpad = require('smartpad');

var smartpadEvts = smartpad.initSmartPadDevice((evtEmitter) => {
  smartpadEvts = evtEmitter;
  smartpadEvts.on('buttonDown', (button) => {
    console.log("Button Down EvtHandler", button);
    smartpad.lightButton(button, smartpad.color.purple);
  });

  smartpadEvts.on('buttonUp', (button) => {
    console.log("Button Down EvtHandler", button);
    smartpad.lightButton(button, smartpad.color.off);
  });

  smartpadEvts.on('knobChange', (kID, Value) => {
    console.log("Knob: "+kID, Value);
  });

  smartpad.lightButton(27, smartpad.color.purple);
});

Constants

smartpad.color.red
smartpad.color.green
smartpad.color.blue
smartpad.color.ltblue
smartpad.color.purple
smartpad.color.yellow
smartpad.color.white
smartpad.color.off`

API

smartpad.initSmartPadDevice(callback)
   find and open the SmartPAD device (requires ALSA to create /dev/midi1)
   returns an event generator
smartpad.lightButton(buttonNumber, color)
   light a button with a certain color (or turn it off)
   returns nothing
smartpad.setKnob(knobNumber, knobValue)
   Knobs retain their own value inside the device. You can reset it with this call.
   returns nothing
smartpad.stop()
   clean up and tear down this module, so you can exit
   returns nothing

Events

ready: when initialization is complete
buttonDown: when a button is pressed, passes in the button number (0-63)
buttonUp: when a button is released, passes in the button number (0-63)
knobChange: when a knob is turned, passes in the knob number and value of knob (0-127)

Meta

LICENSE (MIT)