OTA Updates with external Flash

Projects General Guidance
1

Hi there,
i want to add the possibility of Software Updating but I dont know how to do it and where to start first. I am using the ESP-12F and I design the circuit board by myself.
Requirements for my application:

  • Since the internal Flash is limited and my programm will grow in the future I wanted a external flash which can handle this easily.
  • The Software Updates should be send encrypted
  • There should be the possibility if i as a coder messes something up in the new software update the microcontroller returns to the programm from before so i can access it again
  • And if Power Issues arise the Ciruit needs to be powered by a battery so it still can flash the software

Thank you very much in advance for any help!
Xentox

2

How do You plan to do this?

3

Mmmm, he doesn't half want much, does he? :grin:

4

I am sort of busy the rest of the year. Has anybody told him about OTA stuff on this and other forums?

5

First of all sorry for answering so late was busy until now :sweat_smile: To give some more Information I have a main controller my Raspberry Pi which communicates until now with MQTT Messages with my Microcontrollers and what they should do. Now i want to develope a easy update mechanism which has various features as stated above. I want to do this with a esp-12F connected to an external flash (communication with SPI) where the new update should be first of all stored and the old one for recovery. Then I want to deploy my update on the Raspberry Pi and with a button on my website ( Hosted on Raspberry Pi) i can trigger the software update to all Microcontrollers maybe via FTP. This was my idea at first if you have some better implementations feel free to let me know :blush:

6

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