BLE FOTA with double application slot when update

[Wayne_Chang]

Hi all,

i am using NCS 2.4.0

I have a question is there any possible that i can use double slot to update firmware over BLE FOTA?

I already look at the website below

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-8-bootloaders-and-dfu-fota/topic/exercise-3-fota-over-bluetooth-low-energy/

in lesson 8, exercise 1, there is a define call  CONFIG_SINGLE_APPLICATION_SLOT, which i can choice to use single slot to over write or double slot to swap.

but there is no  CONFIG_SINGLE_APPLICATION_SLOT at exercise 3 with BLE FOTA !

and i trace the code at mcuboot, it 

my ultimate objective is to apply both BLE FOTA and serial OTA(or uart) at same project

or is there anything that needs attention?

thanks.

[swallowirritate]

Yes, you can use double-slot firmware updates over BLE (FOTA) in NCS (nRF Connect SDK) 2.4.0
To enable double-slot swapping, you need to add the following to your project's `prj.conf`:
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_UPDATEABLE_IMAGE_NUMBER=2

boxing random

[Wayne_Chang]

Hi swallowirritate,

thanks for your answer

I already use 
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_NCS_SAMPLE_MCUMGR_BT_OTA_DFU=y

after I add CONFIG_UPDATEABLE_IMAGE_NUMBER=2

I encounter a problem when i build the code

/home/ncs/v2.4.0/nrf/include/flash_map_pm.h:41:22: error: 'PM_mcuboot_primary_1_ID' undeclared (first use in this function); did you mean 'PM_mcuboot_primary_ID'?
   41 | #define PM_ID(label) PM_##label##_ID
/home/ncs/v2.4.0/nrf/include/flash_map_pm.h:41:22: error: 'PM_mcuboot_secondary_1_ID' undeclared (first use in this function); did you mean 'PM_mcuboot_secondary_ID'?
   41 | #define PM_ID(label) PM_##label##_ID

do I need to add something else in my `prj.conf`?