Hello, thank you for taking time to review this.
I am trying to setup a serial DFU setup for the nRF52 on the nRF91 DK board. I am running into problems getting it to work and understanding it in general.
I looked at several pages trying to help myself understand it
1) https://docs.zephyrproject.org/1.12.0/samples/subsys/usb/dfu/README.html
2) https://docs.zephyrproject.org/1.13.0/devices/dts/flash_partitions.html
3) https://mcuboot.com/mcuboot/readme-zephyr.html
4) https://docs.zephyrproject.org/1.12.0/samples/subsys/mgmt/mcumgr/smp_svr/README.html
5) https://github.com/apache/mynewt-mcumgr-cli
As well as the links on these pages
I have tried several processes, but for the sake of conversation I will explain my most recent approach.
I compiled the MCUbootloader:
-in mcuboot/boot/zephyr/build
1) cmake -GNinja -DBOARD=nrf52840_pca10090 ..
2) ninja
3) ninja flash
Once I have flashed the bootloader
-in /zephyr/samples/bluetooth/beacon/build
1) cmake -GNinja -DBOARD=nrf52840_pca10090 ..
2) ninja
3) ~/<path/to/source>/ncs/mcuboot/scripts/imgtool.py sign \
--key ~/<path/to/source>/ncs/mcuboot/root-rsa-2048.pem \
--header-size 0x200 \
--align 8 \
--version 1.0 \
--slot-size 0x69000 --pad-header \
./zephyr/zephyr.hex b_signed.hex
After both are completed:
-in above build dir
1) nrfjprog --program b_signed.hex
Error:
Parsing hex file.
Reading flash area to program to guarantee it is erased.
ERROR: The area to write is not erased.
Notes:
I have tried signing the bootloader and loading at 0xC000
I have tried adding CONFIG_BOOTLOADER_MCUBOOT=y to the beacon prj.conf
I am just having trouble putting this all together and understanding how it all works and how to do it. My goal is to load some project like bluetooth/beacon, then use a serial DFU to change the project image to like the hello_world example and have it load into slot1, then switch it to slot0 after verification and then load hellow_world on reset/boot.
Thanks for your help
