1.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved
Over-The-Air (OTA)
firmware upgrades for
Internet of Things devices
with JFrog Bintray
Dr. Ivan Kravets, CEO at PlatformIO

2.
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IoT Devices
30 billion devices by 2020 (wiki)
● Smart homes
● Smart cities
● Smart grids
● Virtual power plants
● Intelligent transportation
● ...

3.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
What’s Inside?
Copyright © 2018 JFrog, PlatformIO. All Rights Reserved

4.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
● Limited CPU ( ~100MHz )
● Limited RAM ( ~256KB )
● Limited Flash ( ~1MB)
● Limited communication bandwidth
● Limited TLS support
● Limited power supply resources
Average constrained device
Limited processing and storage capabilities

5.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
Flash Map
Fixed User Application (No OTA)
Boot (optional) Application EEPROM SPIFFS
To upgrade the application, you reprogram it

6.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
● Open source, Apache 2.0 license
● Zero dependency, written in pure Python
● Rich command line interface (CLI)
● Use your favorite IDE or OS
● Multi-platform build system
● Automatic toolchain and library management
● Built-in support for CI / CD
● “1-click” debugging
● Run unit test on a remote IoT device
How to program IoT device?
PlatformIO: an open source ecosystem for IoT development

7.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
Flash Map
Fixed User Application (No OTA)
Boot (optional) Application EEPROM SPIFFS
Upgradable User Application (OTA)
Boot OTA State Application Application* EEPROM SPIFFS
OTA needs 2 partitions to upgrade safely

8.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
● Free For Open Source
● 100% Automated via REST API
● Custom attributes per release
● Super fast CDN, don’t worry about continents!
● Full Control and Security
● Unlimited number of IoT devices
● Bulk upgrades
● Release provisioning and analytics
How to manage IoT updates?
JFrog Bintray: Universal Distribution Platform

9.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
Flash Map
Fixed User Application (No OTA)
Boot (optional) Application EEPROM SPIFFS
Upgradable User Application (OTA)
Boot OTA State Application Application* EEPROM SPIFFS
Bintray API

10.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
Build
(compile firmware)
Local Test
(native, host OS)
Remote Test
(on a physical remote device)
Delivery
(publish firmware)
CI / CD
Over-The-Air Firmware Upgrades Workflow
Smart homes Smart cities Smart grids Virtual power plants Intelligent transportation

11.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
Demo
Copyright © 2018 JFrog, PlatformIO. All Rights Reserved
https://github.com/platformio/bintray-secure-ota.git

12.
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Secure Bintray Client
C++ open source library by PlatformIO
#include <BintrayClient.h>
const BintrayClient bintray(
BINTRAY_USER,
BINTRAY_REPO,
BINTRAY_PACKAGE
);
const String version = bintray.getLatestVersion();
const String firmwarePath = bintray.getBinaryPath(version);
// download & flash image...

13.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
Initial configuration
platformio.ini
; Please navigate to https://bintray.com/, create an account,
; repository, and add a package where PlatformIO will deploy firmwares
; api_token = Bintray.com > Edit Profile > API Key
[bintray]
user = ivankravets
repository = platformio-ota
package = bintray-secure-ota
api_token = ${env.BINTRAY_API_TOKEN}
; Wi-Fi network settings
[wifi]
ssid = ${env.PIO_WIFI_SSID}
password = ${env.PIO_WIFI_PASSWORD}
[common]
; firmware version, please modify it between releases; positive integer value
release_version = 1

14.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
Unit Testing
Local & Remote
#include <unity.h>
void test_bintray_binary_path_is_valid(void) {
const String binaryPath = bintray.getBinaryPath(bintray.getLatestVersion());
TEST_ASSERT_TRUE(binaryPath.length() > 0);
TEST_ASSERT_TRUE(binaryPath.endsWith(".bin"));
TEST_ASSERT_TRUE(binaryPath.indexOf(BINTRAY_USER) > 0);
}
// ...
void setup() {
UNITY_BEGIN();
RUN_TEST(test_bintray_client_credentials);
RUN_TEST(test_wifi_connection);
RUN_TEST(test_bintray_binary_path_is_valid);
// ...
UNITY_END();
}

15.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
CI/CD Pipeline
Automated firmware delivery: any OS, any CI service
install:
- pip install -U platformio
- platformio upgrade --dev
- platformio update
script:
# Check compiler errors
- platformio run
# List remote devices
- platformio remote device list
# Run embedded test on a remote device
- platformio remote test -r
deploy:
provider: script
script: platformio run -e release -t upload

16.
Copyright @ 2018 JFrog, PlatformIO - All rights reserved. Ribbit with us: #swampUP
THANK YOU!