ESP32 / atPlatform Step 8 - Sending & Receiving Data with a Flutter App (ESP32 & Flutter)

In this episode, we are having our ESP32 send/receive data to/from a Flutter app.
With Atsign, all data between end points is end-to-end encrypted.
The atPlatform is a solution that allows developers to develop secure applications easily.
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Socials:
Website: atsign.com
Docs: docs.atsign.com/
KZbin: / atsignco
Twitter: / atsigncompany
LinkedIn: / atsigncompany
Discord: discord.atsign....
GitHub: github.com/ats...

[@VedagyaBhalotia]

I have been trying to make a BLE app in flutterflow to receive data from esp32. That is all I need to do but it dosen't work can you suggest if it would be easier to shoft in flutter fna do it or still do it in flutterflow.

[@CompanyBusinessCards]

Thanks for this. Is there a way to directly save a text file to ESP32 via flutter while connected to the esp32 AP

[@AtsignCo]

Using atSigns, you can have your ESP32 run an atSign and subscribe to the atSign running on the Flutter app. Your ESP32 code will then receive a message/command from the Flutter app then create a text file containing whatever the Flutter app would have instructed. This is possible through our SDKs. Check out docs.atsign.com !

[@CompanyBusinessCards]

​@@AtsignCothanks but does not seem to be feasible when I have to program thousands of generic boards. And the communication needs to happen on the local network for security reasons.

[@AtsignCo]

@@CompanyBusinessCards It is still possible to use atSigns offline. You would need to set up your own atDirectory (previously called root server) and your own atServers (previous called secondary servers) that are visible to each other on the network. As long as you specify the root address, your root server can point to requested atSigns to their corresponding atServers.

[@CompanyBusinessCards]

@@AtsignCo can it be automated. I can hardcode 1000s of devices. For example an app needs to handle the communication to the esp32

[@wildgreen17]

@@CompanyBusinessCards we are happy to help you further if you’d like! We have support and resources on our discord: discord.atsign.com

[@bennguyen1313]

Can flutter talk to a Windows' bluetooth dongle ( FSC-BP102 , HC-06-USB ) that's connected to Windows? I've tried to use flutter to talk to desktop peripherals using (ffi, platform-channels), but no luck. Perhaps it would be easier to use python-flet? Also, any plans on a video setting up VSCode to work with ESP32? I installed IDF (esp-idf-tools-setup-online-2.20) , VSCode , the Microsoft C++ Build Tools and the VS Code extensions: C/C++ and C/C++ extension pack. However when I try running the espressif extension (express mode) it does not see my existing IDF! I'd really like to debug using the esp-prog!

[@jeremytubongbanua7399]

Hey @Ben, I don't have experience with connecting to Bluetooth devices in Flutter, but from a quick google search, I came across this: pub.dev/packages/flutter_blue_plus Be sure to also join our discord in case you have any questions (I almost missed this one!) : discord.atsign.com

[@AtsignCo]

We have a tutorial on setting up VSCode and your ESP32 with PlatformIO using the Arduino framework. There is current work being done to have the atPlatform working with the IDF as well. kzbin.info/www/bejne/ZqSoh6Ooe8RlfMk&pp=gAQBiAQB

[@chidiebube3657]

Cool......what is protocol for communication between the esp and the flutter app

[@AtsignCo]

Is it our own protocol, the atProtocol! docs.atsign.com/atplatform/specification/#introduction

[@chidiebube3657]

Wow... Cool, what is the proximity?

[@AtsignCo]

@@chidiebube3657 The atProtocol is used between endpoints to communicate over the Internet. The ESP and Flutter app use the atPlatform (which implements the atProtocol) for end-to-end encrypted communication.

[@chidiebube3657]

@@AtsignCo oh.... thanks, i will try it