C# .net 4.5 for Nearables

Insury · July 3, 2017, 12:32am

Hi All
Just a very simple question - how would I obtain the x,y coordinates from a nearable in Windows 10 + c#.
I am using the Windows.Devices.Bluetooth libraries and can get so much other information - unfortunately I cannot seem to locate/obtain the motion sensor data. Can anyone possibly help?
Much appreciated.

Mathri

heypiotr · July 3, 2017, 9:48am

You can use the Windows Bluetooth API you mentioned to read the data from the Nearable packet. And then here’s example JavaScript showing how to parse a Nearable packet, you can port that to C#

github.com

Estimote/estimote-specs/blob/master/estimote-nearable.js

// Estimote Nearable packet is broadcast as Manufacturer Specific Data,
// with Estimote's Company Identifier, i.e., 0x015d.
// https://www.bluetooth.com/specifications/assigned-numbers/company-identifiers

// Once you obtain the Manufacturer Specific Data, here's how to parse them into
// an Estimote Nearable packet.
function parseEstimoteNearablePacket(data) { // data is a 0-indexed byte array/buffer

  // note that depending on the BLE-scanning library you use, the Company ID
  // might or might not be part of the Manufacturer Specific Data, and might
  // instead be a separate property
  //
  // most of the time, it's simply the first two bytes of the data, and that's
  // what we're assuming here
  var companyId = data.readUInt16LE(0);
  // Company ID must be Estimote's
  if (companyId != 0x015d) { return; }

  // byte 2 is "which exactly Estimote packet this is"
  // for a Nearable packet version 1 (currently the only one), the value is 0x01

This file has been truncated. show original

Insury · July 3, 2017, 9:17pm

Thank you heypiotr.
Appreciated for the direction - 1 thing though - can you possibly define the data object as the manufacturer data object doesn’t parse across. Seems different format. Even if you can define what the variable should be I could work from there.
Thank you

Mathri

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C# .net 4.5 for Nearables

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