TimeSwipe wrapper for NodeJs

Prerequisites

Driver installation (instructions) - latest driver for download
Run module with root permission (sudo)

Installation

npm install timeswipe

Usage

Example:

var timeswipe = require('timeswipe');

// Settings
timeswipe.SetBridge(0);
timeswipe.SetSensorOffsets(0,0,0,0);
timeswipe.SetSensorGains(1,1,1,1);
timeswipe.SetSensorTransmissions(1,1,1,1);

// Event Listener for Button
timeswipe.onButton(async function (pressed, counter) {
    console.error("onButton pressed: ", pressed, " counter: ", counter);
});

// Event Listener for Errors
timeswipe.onError(async function (errors) {
    console.error("onError errors: ", errors);
});

var lines = 0

// Start measurement
timeswipe.Start(async function (data, error) {
    if (error) {
        console.error("errors: ",error);
    } else {
        data.forEach(function(entry) {
            lines = lines + 1;
        });
    }
});

const promise = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve()
  }, 10000)
})

function onComplete () {
  timeswipe.Stop()
  console.log('got lines: ', lines)
  process.exit(0)
}

promise.then(onComplete)

Functions

Settings for Offset, Gain and Transmission can be applied for each signal separated.

SetSensorOffsets (int offset1, int offset2, int offset3, int offset4)

Set Offset for measured data (bit).

SetSensorGains (int gain1, int gain2, int gain3, int gain4)

Set board internal measurement-gain (bit --> V).

SetSensorTransmissions (double trans1, double trans2, double trans3, double trans4)

Set sensor specific transmission (V --> real unit). You get those from their datasheet.

SetSecondary (int number)

Choose primary or secondary measurement type. For TimeSwipe pHAT IEPE this is 0 for IEPE, 1 for voltage signal (+-10V). For TimeSwipe pHAT DMS this is 0 for bridge circuits, 1 for current signal (4-20mA).

Start (function(data,error))

With this you can start measurement. Add callback with input data (array) and error (count of errors occured while record.

onButton (function(pressed, counter))

Event Listener for button pressed/released.

onError (OnErrorCallback cb)

Event Listener for errors.

Stop ()

Stop measurement.

pmalessa / TimeSwipe.js