This is a test of the FOTA for PineTime using Zephyr and nRF Connect. It's based on the Blinky example. I am using two build configurations to test:

• pinetime_devkit0
• nrf52dk_nrf52832

The goal is to update a PineTime DevKit OTA from the nrfConnect mobile app.

One problem is that the PineTime board enables the 'xt25fb32' flash NOR device on the spi1 bus by default in the devicetree, and this will cause a linker error is a result of the SPI driver not being included in the bootloader build.

Assuming you don't want to use this FLASH NOR device in your bootloader, you can create a devicetree overlay to disable the device for mcuboot. To apply a devicetree overlay for the child image, you can create a folder named 'chilld_image' in your project root with the 'mcuboot.overlay' file. Folder structure should be as follows (Permanent configuration changes to child images):

blinky_ble/child_image/ └── mcuboot.overlay

/delete-node/ &xt25fb32;

&spi1 {
    status = "disabled"; 
};