dexcom-ruby

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Introduction

dexcom-ruby allows you to easily interact with Dexcom Share APIs, enabling real-time retrieval of glucose data on your application

Install

You can install the gem via Rubygems:

gem install dexcom

Configuration

The gem can be easily configured via the configure method:

Dexcom.configure do |config|
  config.username = 'my_username'
  config.password = 'my_password'
  config.outside_usa = true
end

There are three available parameters to configure:

• username: The username of your Dexcom account
• password: The password of your Dexcom account
• outside_usa: Boolean indicating if the account that you want to access is not an American one

Usage

You can retrieve the last blood glucose reading from Dexcom using the method Dexcom::BloodGlucose.last

bg = Dexcom::BloodGlucose.last
=> #<Dexcom::BloodGlucose:0x0000555c19959000
 @timestamp=Sun, 21 Jun 2020 11:23:05 +0000,
 @trend=4,
 @value=147>

It will return a Dexcom::BloodGlucose object, which has the following fields:

• value: The blood glucose value in mg/dL
• timestamp: The instant when this reading was registered
• trend: Number representing the type of progression of the latest readings. You can get a human-readable version using trend_description and its symbol using trend_symbol.
• mg_dl: Alias to value
• mmol: Blood glucose value in mmol/L

bg.timestamp
=> Sun, 21 Jun 2020 11:23:05 +0000

bg.trend_description
=> "Steady"

bg.trend_symbol
=> "→"

bg.mg_dl
=> 147

bg.mmol
=> 8.2

Additionally, if you prefer to retrieve a range of values instead of only the last one, you can use the .get_last method. You can specify either the number of values that you want or how many minutes in the past you want to search for

Dexcom::BloodGlucose.get_last(max_count: 5)
=> [#<Dexcom::BloodGlucose:0x0000555c19d7b7c8
  @timestamp=Sun, 21 Jun 2020 11:23:05 +0000,
  @trend=4,
  @value=147>,
 #<Dexcom::BloodGlucose:0x0000555c19d7b660
  @timestamp=Sun, 21 Jun 2020 11:18:06 +0000,
  @trend=4,
  @value=148>,
 #<Dexcom::BloodGlucose:0x0000555c19d7b4d0
  @timestamp=Sun, 21 Jun 2020 11:13:06 +0000,
  @trend=4,
  @value=147>,
 #<Dexcom::BloodGlucose:0x0000555c19d7b390
  @timestamp=Sun, 21 Jun 2020 11:08:06 +0000,
  @trend=4,
  @value=148>,
 #<Dexcom::BloodGlucose:0x0000555c19d7b138
  @timestamp=Sun, 21 Jun 2020 11:03:06 +0000,
  @trend=4,
  @value=149>]


Dexcom::BloodGluocse.get_last(minutes: 15)
=> [#<Dexcom::BloodGlucose:0x0000555c19d7b7c8
  @timestamp=Sun, 21 Jun 2020 11:23:05 +0000,
  @trend=4,
  @value=147>,
 #<Dexcom::BloodGlucose:0x0000555c19d7b660
  @timestamp=Sun, 21 Jun 2020 11:18:06 +0000,
  @trend=4,
  @value=148>,
 #<Dexcom::BloodGlucose:0x0000555c19d7b4d0
  @timestamp=Sun, 21 Jun 2020 11:13:06 +0000,
  @trend=4,
  @value=147>]

NOTE: You can retrieve data up to 1440 minutes (24 hours) in the past. Even if minutes is greater than 1440, or if you specify a max_count greater than the number of blood glucose values registered in the last 24 hours, you will only get data for that period