The Duo is installed the customed Particle firmware by default during manufacturing, which enables you developing applications using the Particle Build (aka. Particle online Web IDE). If you are running an application developed using WICED SDK, you will not able to access any of the services and tools provided by Particle, definitely including the Particle Build.
- Particle account
- RedBear Duo development board
- Micro USB cable
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Please follow the Out-of-Box Experience to claim your Duo to the Particle Cloud.
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Till now, we assume that your Duo has successfully connected to the Particle Cloud. Login Particle Build. Click on the
icon, it will list all of your claimed Particle devices. Select one of your Duos that you are going to flash application by staring it on the left near to its name. Note that the Duo you selected must be online, i.e. there is a cyan idot breathing on the same label of the starred Duo, otherwise, you won't able to flash application to the Duo Over The Air (OTA).
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Click on the angle bracket on the right of the Duo, you will see the Duo's device ID. Under the "Building with firmware" label, select the system firmware version for the application you are going to compile against. For now, you'd better select the one that is equal to the system firmware version on the Duo. Otherwise, the application you compiled and flashed may not work well.
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Click on the
icon, on the extended panel you can choose an example or create your own application to compile. Let's choose the "1. BLINK AN LED" as simple demonstration.
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Click on the
icon to compile and followed by OTA flashing the current application to your Duo. If you only want to verify the application, click on the 
icon.
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During OTA flashing the application, your Duo will be toggling in magenta and the console on Web IDE will print:
Flashing code...if it does not flash magenta, verify your code and try again.After OTA flash procedure completed, the console will print:
Flash successful! Please wait a moment while your device is updated...After a moment, your Duo will re-boot to run the new updated application, you'll see the on-board blue LED toggles in every second interval.
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Well done! You could try more other examples that under the "Example apps" label or, just start creating your own applications with the online Web IDE!
More informations about the Particle Build, please read the Particle's online documentation.
We always recommend you update your Duo's system firmware to the latest version, since there may have new features added and bugfixes within the new released version.
It is very easy to update your Duo's system firmware with the Particle Build. Simply choose an upper firmware version for the application you are going to compile against (see step 3 of the First Simple Application section), and then OTA flash the application. It will automatically update your Duo's system firmware Over The Air. More details and other ways to update the system firmware, please refer to the Firmware Deployment Guide.
You should note that the Particle Build only supports firmware upgrading, if you choose a lower firmware verison to compile against, it won't downgrade the Duo's system firmware for you.
- Duo Introduction
- Arduino/C/C++ Programming Reference Manual
- Firmware Architecture Overview
- How It Works
- Particle Build
- Particle Documentation
- RedBear Discussion Forum
- Particle Community
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