This document introduces Oberon's HomeKit SDKs and services. It discusses: - Oberon provides everything needed to add HomeKit support to devices through small and fast SDKs. - HomeKit allows for simple and secure control of smart devices through the Home app and Siri on iOS devices. - Oberon's SDKs are optimized to work with very small microcontrollers, requiring as little as 14KB RAM and 50KB flash.

1. Introduction
to
Oberon HomeKit SDKs

2. 2
We believe that smart home devices
should be trustworthy and a joy to use.
With Apple HomeKit, one can easily
set up and control smart devices.
We provide everything you need to
add HomeKit support to your device.

3. User experience
Simple and standardized installation process
Dedicated Home app for all devices
Siri voice commands out of the box
Security and privacy
End-to-end with state-of-the-art cryptography
Access from Internet is optional, not required
Connectivity
Bluetooth Low Energy (BLE) and IP (WiFi, Ethernet)
Why support HomeKit?
3

4. Home App & Standard Interface
4
A central
point of
organization
for your
connected
home

5. Controllers
iPhone, iPad, iPod, and Apple Watch provide a generic
HomeKit User Interface out of the box
iOS API allows anyone to implement HomeKit apps
Smart home devices
Apple defines the protocol for smart home devices
Device manufacturers must implement this protocol
(on the device side)
What is already there?
5

6. HomeKit protocols are hard to implement
Designed for radical end-to-end security
HomeKit security is strong
Usually needs fast processors with large memories
Speed and memory sizes can be critical
Scaling down to low-cost microcontrollers requires
massive investments into optimizations
Challenges for Smart Devices
6

7. Oberon microsystems provides the fastest
and smallest implementation of HomeKit for
Home Devices
Unique correctness proofs for critical security
algorithms reviewed by independent experts
Prof. W. Meier & Prof. C. Nicola:
“in all parts mathematically and formally correct”
The Benchmark
7

8. Tim Cook, Apple CEO, on HomeKit
8
Oberon is a key partner of Apple in the HomeKit ecosystem,
along with accessory and semiconductor vendors.

9. Licenses
Fast, tiny and trustworthy HomeKit SDKs
Including source code licenses
Maintenance
Access to Oberon repository with software updates
Technical support
Engineering services
Integration of HomeKit into your devices
Apple certification support
Oberon Products & Services
9

10. OberonHAP software module implements the
HomeKit protocol (HAP)
Samples for the predefined device types
Glue code for the target platform’s BLE and/or IP
protocol stack(s)
Provides everything you need to add
HomeKit support to your device.
Oberon HomeKit SDK
10

11. Where no other HomeKit Implementation
goes!
Works with ≈14 KB RAM and ≈50 KB flash
Simple application logic included in these numbers,
but not the BLE stack
Enables practical use on SoCs with ≥32 KB RAM
Feasible even on low-cost 16 MHz Cortex-M0
Footprint: Even for BLE SoCs
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12. Where no other HomeKit Implementation
goes!
Works with ≈20 KB RAM and ≈80 KB flash
Simple application logic included in these numbers,
but not the IP stack nor the buffers for TCP stack
and TCP connections
Enables practical use on SoCs with ≥100 KB RAM
Memory requirements depend on supported
HomeKit profiles
Footprint: Even for WiFi SoCs
12

13. Speed: Pair Setup & Verify
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Core Cortex-M0 Cortex-M3 Cortus APS3RP Cortex-M4F microAptiv UP
Instruction set
architecture
ARMv6-M ARMv7-M Cortus V2 ARMv7E-M
with FPv4-SP
extension
MIPS32
with DSP
enhancements
Clock frequency 16 MHz 48 MHz 50 MHz 64 MHz 200 MHz
Setup phase 1
(static setup code)
3,881 ms 1,109 ms 578 ms 361 ms 97 ms
Setup phase 2 14,965 ms 4,256 ms 2,191 ms 1,338 ms 357 ms
Opening a session
(authentication)
935 ms 255 ms 125 ms 52 ms 18 ms
These numbers only include the cryptographic processing. The Bluetooth Low Energy stack (or the IP stack for WiFi or Ethernet), the application
logic, and iOS at the other end will add to the round-trip times as experienced by a user. Zero wait states assumed.

14. nRF52 microcontroller
Cortex-M4F at 64 MHz
64 KB RAM and 512 KB Flash
Built-in BLE radio
Nordic HomeKit SDK uses OberonHAP
https://www.nordicsemi.com/...
Example: nRF5 Platform
14

15. Any modern Linux platform supported
HAP over IP support (WiFi, Ethernet)
Raspberry Pi as development platform
Use a Raspberry Pi 3 or Raspberry Pi 1 B+ as a low-
cost development board, for evaluation purposes and
while developing your custom PCB
Linux Platforms
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16. Predefined types
fan, garage door, light bulb, door lock, outlet, switch,
thermostat, air quality sensor, security system, carbon
monoxide sensor, contact sensor, humidity sensor, leak
sensor, light sensor, motion sensor, occupancy sensor,
smoke sensor, temperature sensor, window, window
blinds, carbon dioxide sensor, doorbell, IP camera, air
conditioner, purifier, humidifier
Custom types are possible as well
Supported Device Types
16

17. Videos
17
door lock light bulb
custom characteristic
setup with code setup with display

18. Our dedicated HomeKit Website:
http://oberonhap.com