RE: How to use 2 different SPI flashs to store the secondary images

AHaug — Tue, 05 Dec 2023 14:14:15 GMT

Hi,

I will have to do some investigating to see if it is possible to do what you want.

My immediate thoughts is that this should be possible as you can change devices during runtime, and I believe you can achieve this with 1 firmware where you define both the SPI flashes and you run a check at boot to see which flash you're using and then load the drivers and everything you need

I.e something like

In .dts you define both
In pm_static you define mcuboot_secondary partition to be residing in the same address range so it will be
In main you define which device you have
1. If device A, then you don't need to load flash device B
2. If !A then load B
Continue booting and starting the application
Do DFU over BLE identical in both devices

Do note that we don't know if this works out of the box, but I believe that you should be able to set it up like this given that you handle any potential edge cases such as choosing the devices and handling any issue that might rise by having multiple devices

Let me know if this is enough to get you started

Kind regards,
Andreas