by Anton Shmagin, Sr. Consultant and Gavin Adams, Solutions Architect, AWS

1. © 2017, Amazon Web Services, Inc. or its Affiliates. All rights reserved.
Webinars
Anton Shmagin, Partner SA
Gavin Adams, SA
Wednesday, April 26th, 2017
AWS IoT with ESP32 and
Mongoose OS

2. AWS IoT

3. Espressif
Company behind popular ESP8266 and ESP32 modules
• ESP32:
• 240 MHz dual core Tensilica LX6 MCU (600 DMIPS)
• Integrated 520 KB SRAM
• Integrated 802.11BGN HT40 Wi-Fi transceiver
• Integrated dual mode Bluetooth (classic and BLE)
• 16 MByte flash
Find out more at https://www.espressif.com
Espressif and AWS are co-sponsoring this workshop

4. Mongoose OS
Cesanta Mongoose OS (mongoose-os.com)
• Hardware agnostic: ESP32, ESP8266, TI CC3200, STM32 and others
• Secure: SSL/TLS, Microchip ATECC508A crypto-chip support, ESP32
encrypted flash support
• Develop in C or JavaScript, or both
• Networking: MQTT, WebSocket, COAP, HTTP/ HTTPS and other
• Mongoose Embedded Web Server and Networking Library

5. Wiring
ESP32 pin MCP9808 pin
GND GND
3.3v VCC
IO26 SCL
IO27 SDA

6. Prerequisites
• AWS CLI configured with valid credentials in the AWS account that
you intend to use
http://docs.aws.amazon.com/cli/latest/userguide/
installing.html
• ESP32 Dev board
• A (good!) USB cable to connect the ESP32 board to your computer
• mos – The Mongoose OS flashing tool. Download at
http://www.mongoose-os.com
• git clone of the Mongoose OS repository from GitHub:
Ø git clone https://github.com/cesanta/mongoose-os

7. Exercise #1 (publish button presses to AWS IoT)
Once you clone git repo, change directory to:
Ø cd mongoose-os/fw/examples/mjs_base
Then execute:
Ø mos build --arch esp32
Ø mos flash
Ø mos wifi SSID PASSWORD
Ø mos aws-iot-setup --aws-region REGION --aws-iot-policy
mos-default *
* mos-default is demo quite permissive policy. Please use more restrictive policies in production!
Change the value of highlighted values to reflect your setup

8. Exercise #1 (publish button presses to AWS IoT)
Start mos console:
Ø mos console
You should see:
Using port /dev/cu.SLAB_USBtoUART
Tock uptime: 8.25607 RAM: 166700
Tick uptime: 9.25616 RAM: 166700
Tock uptime: 10.2566 RAM: 166700
Published: yes topic: mOS/topic1 message: {"free_ram":
166632,"total_ram":0}
I (13755) wifi: pm start, type:0

9. Exercise #1 (publish button presses to AWS IoT)
• Log in to your AWS IoT account and go to AWS IoT service page
• Click on Test

10. Exercise #1 (publish button presses to AWS IoT)
• Subscribe to topic mOS/topic1

11. Exercise #1 (publish button presses to AWS IoT)
• Pressing button on your ESP32 will publish free RAM to the MQTT topic

12. Follow up steps
Go to www.mongoose-os.com
Follow the examples:
• Internet button
• Smart heater
• ECC508A crypto-element
Cesanta is running Give Away &
https://mongoose-os.com/awsloft

13. © 2017, Amazon Web Services, Inc. or its Affiliates. All rights reserved.
Webinars
Thank you!