IoT is rapidly transforming every industry, including commercial and residential buildings. In this session, we discuss how you can build IoT applications for connected buildings using AWS IoT services such as AWS IoT Core and Amazon FreeRTOS. Additionally, the Amazon Key for Business team discusses how IoT helped them overcome delivery-driver accessibility to apartments and condos when reception is closed or not available. AWS IoT enables Amazon delivery drivers to now make deliveries with greater ease.

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Connecting Buildings to New
Opportunities with AWS IoT
Lowry Snow
BDM, IoT & Edge
AWS
S V C 2 0 4
Richard Elberger
AWS – Partner
Solutions Architect
Taru Roy
Firmware Engineer
Amazon Key for Business

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Agenda
Connected Buildings Overview
AWS IoT Overview
• AWS IoT Core
• AWS IoT Greengrass
• Amazon FreeRTOS
Customer spotlight: Amazon Key for Business Use Case

4. Old vs. New
(building blocks)
Tartu Mill 03.jpg by Tartu Mill / CC Attribution-Share Alike 4.0 International

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Smart Buildings market
3.3 billion
smart commercial building
devices estimated by 2022
19.4%
Memoori estimates a CAGR of
by 2022
$84.2B
as the market grows to

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Connected Building use cases
Building automation Security & Monitoring
Lighting systems
Escalators
Facilities appliances
Heating, ventilating, and A/C
(HVAC)
Security locks
Smart meters
Water leak detectors
Elevators
Occupancy monitors
Smoke detectors
Predictive maintenance Energy management
Analytics
Air quality monitoring
Smart blinds
Security cameras & systems
Smart Windows Access controls

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Reference Architecture

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Device fleet
maintenance
Energy efficiency
monitoring
Safeguard manufacturing
facilities
Payment, insurance and
connected commerce
Predictive maintenance Wellness and
health solutions
Connected buildings
and city systems
Productivity and process
optimization
What customers are doing with AWS IoT

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Connect, communicate,
secure
Onboard,
provision,
manage
Devices &
sensors
Connectivity &
infrastructure
Analyze,
visualize,
act
Analytics &
insights
Engage,
empower,
delight
Applications &
services
Transform,
shift culture
Change
management
IoT solutions are complex & multidimensional

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AWS IoT architecture

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AWS IoT architecture
2
1

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To securely connect
devices to the AWS Cloud &
other devices at scale
To fully integrate with
other AWS services to reason on
top of the data
(Analytics, Databases, AI, etc.)
To route, process, and act
upon data from
connected devices
AWS IoT Core is a managed service that lets connected devices easily
and securely interact with cloud applications and other devices.
To enable applications to
interact with devices even
when they are offline
AWS IoT Core

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Device
Gateway
Rules
Engine
Message
Broker
Device
Shadow
Registry
Identity
Service
AWS IoT Core
Manage authorization
of devices & provision
unique identities at
scale
Fully manage connectivity
optimized for IoT
workloads
Define and catalog device
for easy use by AWS
services
Understand and control
the status of your device
at any time
Reliable and fast
communication across
your IoT fleet
Ingest large amounts of IoT
data at a low cost, pre-
process it, & make it
available to 10+ services
for analytics, reporting, &
visualization

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Problem
Entrata provides property management software to
make life easier for property owners, property
managers, and residents. In the era of home
automation, Entrata has been challenged with
connecting devices in buildings to the internet and
ensuring constant uptime.
Solution
Using the AWS IoT message broker, Entrata is able to
securely transmit messages to and from all IoT devices
spread across multiple units and buildings.
Additionally, the AWS IoT device shadow provides
current state information from device hubs to quickly
determine online/offline status.
Impact
AWS IoT provides Entrata with robust scalability and
reliable connection of devices to the cloud. With AWS
IoT, Entrata can ensure devices connected to hubs –
such as lights, thermostats, and door locks – are
always online. This also results in quicker turnaround
of properties and faster response to maintenance
requests.

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Edge Cloud
Law of Economics
Law of Physics
Law of the Land
AWS IoT Greengrass
AWS IoT Greengrass extends AWS IoT onto your devices, so that they can act locally on
the data they generate, while still taking advantage of the cloud.

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Data and
State Sync Security
Over the
Air UpdatesConnectors
Operate
devices offline &
synchronize data
when reconnected
Local
Actions
Simplify device
programming with
AWS Lambda
Mutual
authentication &
authorization
between cloud and
devices
Easily update AWS
IoT Greengrass Core
Machine
Learning
Inference
Perform ML
Inference
locally
Local
Resource
Access
AWS Lambda
functions can
access & use local
resources of a given
device
Extend edge devices
with connections to
external services
Local
Messages
and Triggers
Enable device
communication
without a cloud
connection
Secrets
Manager
Deploy secrets to
edge devices
AWS IoT Greengrass
Extend AWS IoT to the Edge

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AWS IoT Greengrass – Features
ExtendAWSIoTandAmazonML/AItotheEdge
AWS IoT Core
Data Transport & Routing
Amazon
SageMaker
AWS IoT
Analytics
Data Aggregation
Enrichment
Cleansing
Time Series Processing
Model Config
Model creation
Optimization
Retraining
Data Ingest from and Local Actions via Local Resources
ML Model Inference
AWS IoT
Greengrass
Local
Resources
1 2
34
Machine
Learning
Inference
Perform ML
Inference
locally
Local
Resource
Access
AWS Lambda
functions can
access & use local
resources of a given
device

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B2C - Consumer
S m a r t
h o m e
C o n s u m e r
e l e c t r o n i c s
F i t n e s s t r a c k e r s
W a s h e r s / D r y e r s
M o r e
B2B - Commercial
M e d i c a l
d e v i c e s
S m a r t m e t e r s
D o o r l o c k s
H V A C
s y s t e m s
B2B - Industrial
R o b o t i c s
O i l p r e s s u r e s e n s o r s
A u t o m o t i v e
M o r e
Microcontrollersare everywhere

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Why Amazon FreeRTOS?
Faster
Time to
Market
Reduced
Costs

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Will it work on my chip? Does it have the
functionality I need?
How do I start?Where do I get it?
EMBEDDED APPS
FreeRTOS
HW DRIVERS
SECURTIY
LIBRARIES
CONNECTIVITY
LIBRARIES
OVERTHAAIR
(OTA)AGENT
CLOUD&
GREENGRASS
LIBRARIES
HELLO
Amazon FreeRTOS is a microcontroller operating system that extends the popular Amazon FreeRTOS kernel to enable
devices to securely connect to AWS, while making them easy to manage, deploy, and update.
Amazon FreeRTOS

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Local Connectivity
Libraries
Cloud Connectivity
Libraries
Security Connectivity
Libraries
OTA &
Code Signing
Amazon FreeRTOS
Communicate with AWS IoT
Greengrass devices without a
cloud connection
Easily collect data and take
actions on microcontroller-
based devices
Secure device data and
connections
Deploy security updates, bug
fixes, and firmware updates to
devices in the field

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Amazon FreeRTOS: Modular Architecture
Hardware
Vendor Supplied Libraries and Drivers (IDF)
Amazon FreeRTOS Internal Libraries
MQTT Agent
FreeRTOS
Kernel
Shadow
Library
Greengrass
Discovery
Wi-Fi
Management
Library
BLE
Management
Library
OTA Agent
User (Application) Code
Device
Defender
Library

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Three steps to getting started
Choose supported hardware from AWS Partner Device Catalog

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Three steps to getting started
• Amazon FreeRTOS GitHub repository
• Android and iOS SDK GitHub
Download source code
Refer to user guide
• Hardware-specific Getting Started

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Amazon FreeRTOS partners

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Online resources
Amazon FreeRTOS repo
https://github.com/aws/amazon-freertos
Amazon FreeRTOS online documentation
Reference https://docs.aws.amazon.com/freertos/index.html
User Guide https://docs.aws.amazon.com/freertos/latest/userguide/what-is-amazon-freertos.html
Getting started https://docs.aws.amazon.com/freertos/latest/userguide/freertos-getting-started.html
Android and iOS SDKs:
https://github.com/aws/amazon-freertos-ble-ios-sdk/
https://github.com/aws/amazon-freertos-ble-android-sdk/

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A smart way for access controlled commercial & residential buildings to receive deliveries.
Key for Business
What is Key For Business?
Amazon’s Last Mile Delivery service
Our Customers
• Unable to deliver on time
• Wasted hours
• Re-delivery and concession costs.
The Problem

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Key for Business
• Whose Wi-Fi?
• What if password changed?
• Do we need a companion app?
Primary Challenge In Connecting Buildings
How to connect the device to cloud?
• How do we connect to control circuit?
• Must be battery operated.
• Significant development work (?)
• Not readily supported by AFR (yet)
• How available is it?

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Key for Business
The Solution

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Key for Business
How It Works
Amazon FreeRTOS
Amazon API Gateway AWS Lambda
Amazon DynamoDB AWS Data Pipeline Amazon Redshift
AWS Cloud
AWS IoT Analytics
IoT MQTT
protocol
IoT
rule

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AWS IoT Core
• Mutual authentication between device and cloud.
Features
• Communication using MQTT Broker (Pub/Sub) using TCP/IP
• Permissions (Policy)
• Device management (Thing Name)
• Analytics
• IoT Rule (Actions)

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AWS IoT Core
IoT Rule (Actions)

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AWS IoT Core
SDKs
AWS SDKs
Request/Response (HTTP)
AWS IoT SDK
Pub/Sub (MQTT, WebSockets)
Amazon FreeRTOS
AWS IoT SDK but for microcontrollers

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Amazon FreeRTOS
Why did we use it?
• Simpler device requirements
& Lower costs
• 25 Mhz CPU, 64KbRAM, 128 Kb Flash
• Faster time to market • Device management, security, OTA

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Amazon FreeRTOS
• Kernel, TCP/IP stack (freeRTOS/lwIP), TLS 1.2 (mbedTLS), Bootloader
Features
• MQTT Libraries
• Shadow
• Device Defender
• OTA Agent
• Connectivity
• PKCS11
• Greengrass Discovery

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desired
Amazon FreeRTOS
Shadow
IoT
shadow
IoT thing
lightbulb
reported
IoT thing
AWS IoT Core
desired
desired
Last-will IoT
rule
offline

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Amazon FreeRTOS
Device Defender
Cloud Side
Policy violation, Unauthenticated device, Authenticated but permission revoked
Device Side
Device metrics – Connected/Open ports, In/Out data consumption

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Amazon FreeRTOS
OTA
IoT thing
AWS IoT Core
OTA Agent &
Public Key
Amazon Simple Storage
Service (S3)
AWS Key Management
Service
Private Key
FW Binary
Bank 2
Bank 1
(running app)
Header +
FW +
Signed Trailer
Bootloader
Flash FW

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Amazon FreeRTOS
OTA
IoT thing
Bank 2
Bank 1
Bootloader
Boots new image
• On reset, Bootloader boots the latest image in
self-test mode (uses OTA sequence)
• New Image performs self-test
Perform self-test
• Set self as valid image
Self Test Passed
• Invalidate self and reset
Self Test Failed

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Amazon FreeRTOS
Connectivity

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Key For Business
Cellular
Amazon FreeRTOS
aws_tls.c
secure_sockets.c
netif = pppos
KfB + Amazon FreeRTOS
aws_tls.c
secure_sockets.c

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Amazon FreeRTOS
Credential Provisioning
Generate, Download Credentials from AWS IoT & Embed in Firmware Source
Pros Cons
• Automated using AWS
SDKs
• Minimal development
work
• Build each unique FW
separately
• How do you do OTA
since each FW is
unique?

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Amazon FreeRTOS
Credential Provisioning
Docker Amazon Elastic Container
Service
AWS Batch
Amazon Simple Storage
Service (S3)
Amazon Simple Storage
Service (S3)
Base FW
Built hex
with
credential
AWS IoT Core
KfB - Generate, Download Credentials from AWS IoT & Embed in Firmware Source

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Amazon FreeRTOS
Credential Provisioning – JITR/JITP
AWS IoT Core
Register Signer to AWS IoT (set
template as well)
IoT thing
Generate Key pair
Device
certificate
Certificate Signing
Request
Generate Device
Certificate
Signer
Connect

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• Automate devices - lights, HVAC, windows, etc…
• Monitoring & security – security cameras, access controls, leak detectors, etc…
• Advanced analytics - predictive maintenance, energy efficiency, etc…
AWS IoT for Connected Buildings
Use AWS IoT to build your secure, innovative Connected Building solutions
Amazon FreeRTOS and AWS IoT Greengrass
Leverage AWS services for building secure sensor and gateway devices
• Download Amazon FreeRTOS: https://aws.amazon.com/freertos/getting-started/
• Download AWS IoT Greengrass: https://aws.amazon.com/greengrass/getting-
started/
Get started building

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Thank you!
S U M M I T © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Lowry Snow, jlsnow@amazon.com
Taru Roy, taruroy@amazon.com
Richard Elberger, elberger@amazon.com