Add FOTA over BLE to nrf9151+nrf52840

[Michal]

Hi,

I have a board which is nrf9151 with nrf52840 as BLE controller connected via hci_lpuart. This works fine so far, I am able to do simple AT commands as well as doing some BLE communication. I am using TF-M for nrf9151

Now I am trying to add FOTA over BLE and I just cannot get this to work. To not complicate it even more I am trying the old way - not using sysbuild, but it doesn't help.

So what I have tried:
1. Add child_image/mcu_boot.conf
2. Add configuration to proj.conf
```

CONFIG_BOOTLOADER_MCUBOOT=y

CONFIG_SECURE_BOOT=y

CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU=y
```

I am using ncs 2.7.0

Best regards,
Michal

[Charlie]

Hi Michal,

I have not seen anyone tried this before. If nRF9160 can receiving image over BLE, there shouldn't be any issue to do update.

You may refer to the codes following exercies to implment a smp server on nRF9160 side, then test with uart to make sure there is no issue with mcuboot to do firmware udpate first.

Exercise 3 - FOTA over Bluetooth Low Energy - Nordic Developer Academy

Best regards,

Charlie