5 years ago.

Over the Air Firmware suggestions (Hardware suggestions)

We are developing a product and are stuck at Firmware over the air updates.

It seems like we will need a system that meets the following requirements:

• From a firmware perspective, the platform should support delta updates so the entire firmware package doesn't have to be sent OTA, just the changes.
• 32k ram minimum.
• Ideally comes with an MPU.
• Also ideally comes with some sort of cryptoprocessor/engine or crypto hardware acceleration - this is a nice to have but certainly not essential. Note: the last two are for security purposes only.

Do these requirements make sense to you? Would love to know if I'm missing anything critical.

I had some questions about how to handle the increased flash memory storage needs:

• Should we go with a microcontroller having 512KB (512K x 8) or
• Go with a uC having lesser memory and add an external flash memory
• Also which of the above options are better in terms of firmware and other development and or best used in the development?
• What else is required for FUOTA that we are forgetting?

Thanks for the help! Really appreciate the guidance.

{
"requires": ["bare-metal"]
}