Run your JavaScript app for years on a coin cell - JSConf.asia 2016

Nov 25, 20165 likes1,888 views

Jan Jongboom - Run your JS app for years on a coin cell. Presentation given during JSConf.asia 2016 in Singapore about mbed, JerryScript, IoT, Johnny Five and JavaScript.

Running your JS app
JSConf.asia
25 November 2016
for years on a coin cell

Run your JavaScript app for years on a coin cell - JSConf.asia 2016

We're using quad-core machines
to run a temperature sensor

0.137 mA
220 mARaspberry Pi 3 (idle)
One year on AA battery

mbed
Unify microcontroller development
> 100 boards supported
Lot of APIs / libaries / community
But... in C++
Developed by Samsung
JS VM for constrained devices
Can run in 64K of RAM
Written in C++
JavaScript on mbed

JS on mbed - Best of both worlds
• Runs on > 40 boards already
• Drivers, OS, critical paths in C++
• Deep sleep built-in
• Big library ecosystem, and many connectivity methods
• Application code can run in JS, and interop with C++

$$ git clone https://github.com/armmbed/mbed-js-example $ gulp --target=NRF52_DK # Drag file onto board (mounts as mass storage) 1 var led = DigitalOut(LED1); 2 3 setInterval(function() { 4 led.write(lead.read() ? 0 : 1); 5 }, 1000);$

Abstracting away many
microcontroller 'problems'
Thread management, interrupts, context switching, power management

0.137 mA
220 mARaspberry Pi 3 (idle)
One year on AA battery
0.020 mAJS on mbed beacon
1s interval, lowest power mode, nRF52-DK

Current state
• > 40 boards supported (from 9$)
• Need C++ / JS bindings for libraries
• Apache 2.0 licensed
• Very beta... But please help us!
http://mbed.com/js

Thank you!
http://mbed.com/js
@janjongboom

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Develop with Mbed OS - The Things Conference 2019Jan Jongboom

The document discusses Mbed OS, an open source platform OS for IoT devices using Arm Cortex-M microcontrollers. Mbed OS includes integrated security, connectivity options like LoRaWAN, and device management tools. The LoRaWAN stack for Mbed OS supports LoRaWAN versions 1.0.2, 1.0.3 and 1.1, and is optimized for low power usage. Examples are provided to help developers get started with Mbed OS and LoRaWAN.

Firmware Updates over LoRaWAN - The Things Conference 2019Jan Jongboom

Faster Device Development - GSMA @ CES 2019Jan Jongboom

Mbed LoRaWAN stack: a case study - LoRa Alliance AMM TokyoJan Jongboom

The document discusses the Mbed LoRaWAN stack, which provides a secure and modular open source LoRaWAN networking stack for IoT devices. It requires minimal memory and is highly configurable. Testing includes certification tests and a simulator. Firmware updates are now standardized and supported in the stack. The stack helps developers quickly build secure LoRaWAN devices and get to market faster.

Simulating microcontrollers - Arm Research Summit 2018Jan Jongboom