RE: dfu+app build process

paul — Tue, 05 Feb 2019 20:38:57 GMT

Just for completeness, there is also a post linker build step that can also be used and may be better in some situations.

RE: dfu+app build process

bjorn-spockeli — Tue, 05 Feb 2019 08:54:51 GMT

Hi Paul,

Thanks for the feedback regarding nrfutil's dependencies. Will report this internally.

Best regards

Bjørn

RE: dfu+app build process

paul — Mon, 04 Feb 2019 22:16:00 GMT

Thanks Bjorn. Some notes on what I have done:

1) installing nrfutil is non trivial. There is at least one package without a revision dependency: protobuf that required a higher revision than was already installed on my box. The error was: TypeError: __init__() got an unexpected keyword argument 'syntax'. I upgraded from protobuf 2.6 to 3.6 and that fixed it. The install correctly identified that the six package needed upgrading.

2) installing nrfutil has a dependency on the wheel package that isn't caught. Error: Running setup.py bdist_wheel for nrfutil ... error ... Failed building wheel for nrfutil

3) I wrote the following bash script to do the fiddling and called it in the post build command: right click on project in the project items pane | options | User build step in left pane and then post-build command.

#!/bin/bash

BOOTDIR="/home/paulc/dev/2flex_nrf52/bootloader"
LOADERFILE="secure_bootloader_ble_s140_pca10056.hex"
LOADERLOC="../sdk/examples/dfu/secure_bootloader/pca10056_ble/ses/Output/Release/Exe/${LOADERFILE}"
APPLOC="/home/paulc/dev/2flex_nrf52/Output/Debug/Exe/2flex_nrf52.hex"
SETTINGSFILE="bootloader_setting.hexca"
FLASHFILE="payload.hex"
NRFUTIL="/usr/local/bin/nrfutil"
MERGEHEX="/home/paulc/dev/2flex_nrf52/mergehex/mergehex"
NRFJPROG="/home/paulc/dev/2flex_nrf52/nrfjprog/nrfjprog"

pushd ${BOOTDIR}
cp ${LOADERLOC} .
echo "Generating the bootloader settings"
${NRFUTIL} settings generate --family NRF52840 --application ${APPLOC} --application-version 0 --bootloader-version 0 --bl-settings-version 1 ${SETTINGSFILE} --no-backup
echo "merging with the bootloader"
${MERGEHEX} --merge ${LOADERFILE} ${SETTINGSFILE} --output ${FLASHFILE}
echo "programming the bootloader onto the chip"
${NRFJPROG} -f NRF52 --program ${FLASHFILE} --chiperase
popd

Again many thanks

Paul

RE: dfu+app build process

bjorn-spockeli — Mon, 04 Feb 2019 15:07:12 GMT

HI Paul,

you can generate the settings page as a 'User Build Step' -> 'Post Build Command' and then automatically load the settings file when debugging, see

https://devzone.nordicsemi.com/f/nordic-q-a/34212/howto-flash-bootloader-settings-for-dfu-using-ses-at-debug-time

Best regards
Bjørn