Buttonless DFU with SES

[Sunil vignesh]

Hi,

I am using nRF52832 with sdk15.3 SES

I need to use DFU.

Buttonless DFU

need to program the controller without the wire connection.

Can you explain how DFU works and any tutorial or steps to follow to work with SES.

and need some examples to work on it.

[Carl Richard]

Hello, Sunil!

Take a look at this tutorial and its comments. It should cover what you're asking for! :) 

Best regards
Carl Richard

[Sunil vignesh]

Hi,

Thank you,

I will check the tutorial

[Carl Richard]

You can either write export <path_to_executable> in your terminal or follow the instructions for editing environment variables(including PATH) found(for example) here.

Good luck!

[Sunil vignesh]

OK, Thank you i'll check this.

[Sunil vignesh]

If I use nrfutil.exe

where I need to install Python2.7 additional?

[Sunil vignesh]

My Query is have i Windows 10. I have download the nrfutil.exe from here.

While i run the exe file, within a few seconds the exe file closed.

During this i have not installed any version of Python.

After that I have installed Python 2.7.12

but running the CMD and enter python it when to store to install Python 3.7

I am not understanding.

Is that DFU secure bootloader need

Ubuntu / Linux OS support?

[Ali Rumane]

Hi,

I used DFU example on Windows 10 with python 2.7 some time before and it worked well.

Sunil vignesh said:

Is that DFU secure bootloader need Ubuntu / Linux OS support?

I don't think it should be an issue and should work well with Windows 10.

If you don't use python for any other purpose, uninstall python 3 and keep only python 2.7 as it is mentioned in prerequisites to use python 2.7.

Prerequisites
To install nrfutil from source the following prerequisites must be satisfied:

1.  Python 2.7 (2.7.10 or newer, not Python 3)
2.  pip
3.  setuptools (upgrade to latest version): pip install -U setuptools

After installing python 2.7 and nrfutil, try running the example and if it doesn't work please add the logs generated so that we may know what the issue is.

Regards

[Sunil vignesh]

Hi,

I got Python2.7 in windows 10.

The thing While installing Python2.7. need to check this

link of the page is here.

after this in cmd prompt

i have run the cmds like

python

python -V

pip

pip list

python -m pip install --upgrade pip

pip install -U setuptools

pip install nrfutil

what is this description shows. is it works only upto JAN2020?

Is this right?

what is the next step to get into DFU

[Carl Richard]

It's right that Python 2.7 will deprecate next January. My guess is that Nordic is already working on updating their software(including nrfutil) before that time arrives  

As for the next step I recommend that you continue following the guide I linked earlier, specifically the instructions in github repo.

Good luck!

[Sunil vignesh]

Hi,

I am not able to make

micro_ecc_lib_nrf52.a

how to create this..

[Sunil vignesh]

Hi,

I have created the micro_ecc_lib_nrf52.a

using minGW

Can you tell me. the step i followed is ok or not ?

1. Downloaded and Install GNU Arm Embedded Toolchain latest version : here

2. changed the GNU_INSTALL_ROOT and GNU_VERSION

   like this

3. Download and and unzip the micro-ecc folder

in

4. Execute msys.bat file from C:\MinGW\msys\1.0

5. moved to my folder ,in my case

cd /f/1.nRF52/nRF5_SDK_current/external/micro-ecc/nrf52hf_armgcc/armgcc/ 

make

the file has created

Now I build the secure folder example my case

F:\1.nRF52\nRF5_SDK_current\examples\dfu\secure_bootloader\pca10040_ble\ses

[Sunil vignesh]

and now its throw me an error

C:/Program Files/SEGGER/SEGGER Embedded Studio for ARM 4.18/gcc/arm-none-eabi/bin/ld: cannot open linker script file nrf_common.ld: No such file or directory