.. _hello_world:

Hello World DFU
################

BLE DFU on nrf52833dk
**********************
Based on:
https://devzone.nordicsemi.com/guides/nrf-connect-sdk-guides/b/software/posts/ncs-dfu

Added:
./child_image/mcuboot/boards/nrf52833dk_nrf52833.conf

When working with multi-image build (application + mcuboot child image) then the 
partitions you see in the dts (ex. nrf52833dk_nrf52833.dts) file are not used, instead 
the partition manager will be used to handle the partitioning.  

CONFIG_PM_PARTITION_SIZE_MCUBOOT defines the size of the mcuboot size.  The partition 
manager handles everything else.  It uses the "swap-move" process.

run the command "west build -t partition_manager_report"

+----------------------------------------------------------+
| 0x0: mcuboot (0x6000 - 24kB)                             |
+---0x6000: mcuboot_primary (0x3d000 - 244kB)--------------+
| 0x6000: mcuboot_pad (0x200 - 512B)                       |
+---0x6200: mcuboot_primary_app (0x3ce00 - 243kB)----------+
| 0x6200: app (0x3ce00 - 243kB)                            |
+----------------------------------------------------------+
| 0x43000: mcuboot_secondary (0x3d000 - 244kB)             |
+----------------------------------------------------------+


The "key" directory is for RSA security.  No idea how to implement...yet.
