update firmware via uart from android

[Lurn_Z]

Hi all,

I use nRF52832 connect a android device with uart, and I want to update firmware via uart.

I can update my nrf device success on pc for test with the help of your colleagues and this link.

But I have no idea how to do this on android device.

And if I don't want to use nrfutil do you guys have any other example for me to update the version?

Any help or suggestion is appreciated!

Best regards

Lurn

[Lurn_Z]

Hi

Can I use the nrfutil-linux in this link nrfutil releases on my andriod device.

If I can use it how do i use it?

And when I update on PC, use this cmd to update, it will stay here for almost 30 seconds before upgrading. Is this normal?

nrfutil dfu serial -pkg XXX.zip -p COM3 -fc 0 -b 115200

Best regards

Lurn

[Vidar Berg]

Hi Lurn,

I am not sure if it is possible to run Python scripts on Android? If it is, then you could try run the script directly as explained here: https://github.com/NordicSemiconductor/pc-nrfutil/tree/v6.0.0#running-from-source. Another alternative is to implement your own DFU controller following the protocol specification from the SDK documentation here: DFU protocol

Lurn_Z said:

nrfutil dfu serial -pkg XXX.zip -p COM3 -fc 0 -b 115200

Maybe you are seeing the issue discussed here:  nrfutil takes 34 seconds before starting dfu  ?

Best regards,

Vidar

[Lurn_Z]

Hi Vidar,

Vidar Berg said:

Do you have a way to confirm if the device is in DFU mode? 

I will only program the mbr and bootloader to make sure the device enter DFU mode.

And May I ask what platform this nrfutil source code is based on?

Windows, Linux or universal?

Best regards,

Lurn

[Vidar Berg]

Hi Lurn,

Lurn_Z said:

Windows, Linux or universal?

The script is common to all platforms. Installing it on a Linux system will make it compatible with that system.

Best regards,

Vidar

[Lurn_Z]

Hi Vidar,

Vidar Berg said:

Thanks for confirming. The other common reason for the error is when the target device is not in DFU mode. Do you have a way to confirm if the device is in DFU mode? 

Sorry for this question.

When I program mbr and bootloader without application, it upgraded successfully, so maybe my cmd to enter DFU mode not worked, I will check it.

About the version number, can I get/set it in my code instead of nrfutil?

Best regards,

Lurn

[Lurn_Z]

Hi Vidar,

I want to check application version when device is updated, how to do this in code?

Best regards

[Vidar Berg]

Hi Lurn,

Lurn_Z said:

About the version number, can I get/set it in my code instead of nrfutil?

No, because the version number is specified by the signed init command (see Init packet).

Lurn_Z said:

I want to check application version when device is updated, how to do this in code?

You can read the app version from the bootloader settings page @ 0x7F000 (nrf_dfu_settings_t ). 

Best regards,

Vidar

[Lurn_Z]

Hi Vidar,

Vidar Berg said:

No, because the version number is specified by the signed init command

Vidar Berg said:

You can read the app version from the bootloader settings page @ 0x7F000 (nrf_dfu_settings_t ). 

So, I can get the app version use this code in bootloader, but can not modify it in code?

    nrf_dfu_settings_t my_dfu_settings;
    memcpy(&my_dfu_settings, (uint32_t *)BOOTLOADER_SETTINGS_ADDRESS, sizeof(nrf_dfu_settings_t));
    uint32_t my_app_version = my_dfu_settings.app_version;

Best regards,

Lurn

[Vidar Berg]

Hi Lurn,

Can you please explain what you are trying to achieve? I.e. why and when it is you want to change the version number  from the application?

[Lurn_Z]

Hi Vidar,

I want to check and change the version number when updating the device, just a question about modifying it in the code.

And the format of the version number can only be a number of type uint32_t, right?

Best regards,

Lurn

[Vidar Berg]

Hi Lurn,

You can read the version number from the application, but not change it.

The version number can be specified as an integer or a version string (converted to an integer). From nrfutil's help menu:

  --application-version INTEGER   The application version.
  --application-version-string TEXT
                                  The application version string, e.g.
                                  "2.7.31". Will be converted to an integer,
                                  e.g. 20731.

Best regards,

Vidar

[Lurn_Z]

Hi Vidar,

Thanks for your help. I will try it.

Best regards,

Lurn