Mongoose OS
an operating system for connected microcontrollers
by Sergey Lyubka
for Dublin IoT & BigData meetup
What is an IoT
- Connecting a computer to a thing
- Grabbing data from a thing and reporting to the Internet
- Controlling a thing via Internet
What a computer could be?
A workstation like this laptop!
- Big
- Eats a lot of power
- Expensive: ~ 1k EUR
A single board computer
- Smaller
- Eats less power
- Cheaper: ~30 EUR
A microcontroller
- Very smal
- Low power
- Very cheap: ~3 EUR
Software development process
- Using a well known OS like Linux
- Many established, polished software frameworks
System requirements
- What is the minimum RAM a Linux system requires?
- What is the disk/RAM usage of a minimal node.js application?
- What is the RAM usage of a single mutual-TLS connection?
Some rough numbers
Node.js (*)
Disk
RAM
11M
7.6M
RPI3
Flash
RAM
(depends)
1G
RAM
50K
TLS connection (*)
ESP8266
- an MCU costs < 1 EURÂ
- a dev board costs < 3 EUR
- RAM available to the application: 50k
Forget about prototyping with JS and mutual TLS?
- No
- (demo)
Mongoose OS
- Targets commercial connected products
- License: dual, GPLv2 and commercial
- Provides functionality that is usually required by the commercial product: provisioning, OTA updates, remote management, cloud connectivity, security, Arduino compatibility, etc
- Uses underlying native SDK - for example, ESP-IDF on ESP32
- The environment is C/C++
- A restricted JavaScript engine exists to allow scripting
- JavaScript API calls C API via the FFI
We're hiring!
- talk to me
- or email jobs@cesanta.com
Questions?