This repository consists of two different projects:
- easyboot: the bootloader
- blink: a sophisticated million dollars blinky application
Build the two separate applications and flash them. Use either app1 or app2
shield for blink application but you should flash both to complete the
experiment.
The following partitions are created:
boot: bootloader area.settings: shared NVS settings.app1: firmware image 1.app2: firmware image 2.
The bootloader is flashed at the default board ROM offset and will select the
application to use depending on the default user button being pressed at
startup. If the button is not pressed, application starts at partition app1
otherwise at app2.
This application simply blinks the led0 or led1 depending on the application offset.
For convenience, it is designed using a shield to select if the application
must be flashed on app1 or app2.
Configure by passing an additional shield as specified in the zephyr documentation.
Example:
cmake -S. -Bbuild -GNinja -DSHIELD=app2
or
west build --shield app2
- Use zephyr flash API to download a firmware from SPI.
- Register in the settings partition which app should boot from.