Amazon FreeRTOS OTA - Detailed Documentation?

Kernel
1

billfrank wrote on Friday, March 29, 2019:

So I’m looking for the best way to research the Amazon FreeRTOS OTA stuff.

I’m having some trouble finding more than just the high level stuff on the Amazone site (https://docs.aws.amazon.com/freertos/latest/userguide/ota-agent-library.html) but maybe I’m just bad at search or putting the pieces together (like I know there is a BLE library for MQTT).

Some of the type of questions I’m looking for are:

  1. Can we use OTA over a BLE connection to a phone with this library?
  2. Do we really need two bankable copies or can we have one in main flash and the other in serial flash (we would right the bootloader part that handled the switch)?

What is the best way to do this kind of reasearch? Is it best just to pull down the code and start trying to wire it up or am I missing a good resource?

2

rtel wrote on Friday, March 29, 2019:

  1. Can we use OTA over a BLE connection to a phone with this library?

It is in beta, but yes. You will find the latest in github beta
branches here for FreeRTOS:
https://github.com/aws/amazon-freertos/tree/feature/ble-beta

and here for the libs being used in the above link:
https://github.com/aws/aws-iot-device-sdk-embedded-C/tree/v4_beta

  1. Do we really need two bankable copies or can we have one in main
    flash and the other in serial flash (we would right the bootloader part
    that handled the switch)?

Different systems have different requirements. We have some systems
that work in the way you describe here, but as each is different, you
will need to manage the saving/swapping. Having two banks is the
simplest provided you can boot from either flash bank - otherwise you
require additional logic to ensure you can recover when swapping images
in memory.

3

billfrank wrote on Friday, March 29, 2019:

Thanks for your quick response. This is good news for me and I’m looking forward to playing with it.

4

billfrank wrote on Friday, March 29, 2019:

Double Post :frowning: