K32W148-EVK OTA updates

[karamanr]

Hi,
I am trying to add the ota client into my application. I started by following this guide: https://www.nxp.com/docs/en/application-note/AN13855.pdf . I can see the application in both the UART and OTAP sections of the IoT Toolbox, however, the updates do not seem to make any changes. I tried both using a normal Wireless UART application and the UART-OTAP app, by changing the local name when advertising to something else than the default in the app_config.c file. The upload seems to be successful in both cases, but when the board resets, the app is still the old one. I have tried using both the internal and external storage, with the same result. I suspect that something has to be added/changed in the linker scripts, however the pdf file does not mention what file/variable/boot flag has to be changed. Is there something that I've missed or is my approach wrong?

[chris123951]

Hi @karamanr , I saw you post and we are also struggling with similar issue, by any chance did you fix this issue. If yes, could you please share some insights.

[karamanr]

Hi @chris123951 , sorry for the late reply, the way I got it to work was to follow the guide from this link: https://www.nxp.com/docs/en/application-note/AN13860.pdf

The key thing about this is the way you create the update image it seems, at first I thought that I can only create it using MCUXpresso, however I only got my update to work by creating it using the NXP Over the Air Programming tool. Since I was working on Ubuntu, I did not have access to the tool so I thought that only using the .srec file from MCUXpresso would work, however it was not the case. After following the guide, I was able to update my application with a newer version using the IoT Toolboox iOS Application.

Kind Regards,
Ridvan

[Itzel_UV · Accepted solution]

Hello Ridvan,

Could you try following the steps from this guide to create an image with OTAP tool (Chapter 5)

Creating Firmware Update Image for KW45B41Z/K32W148 using Over the Air Programming Tool (nxp.com)? Please send update of your results.

Regards,

Itzel

[karamanr]

Any update @Itzel_UV ?

[Itzel_UV]

Hello,

Have you already tried running the example from https://www.nxp.com/docs/en/application-note-software/AN13855SW.zip?

Have you made any other modification from the guide https://www.nxp.com/docs/en/application-note/AN13855.pdf?

Regards,

Itzel

[karamanr]

Hi,

I was not able to run the example as it is created for the KW45B41ZEVK, while I am using the K32W148-EVK. Is there a similar example for the board I am using? I can try to add the missing stuff and run it on my board, because from a quick look, most differences are board/device specific files. I have noticed some things that I did not have in my project, like these two lines in the linker script:
" m_hadmbuff_start = __base_RAM_VECTOR_TABLE + 0x400;
m_hadmbuff_size = 0x2000;"

However, even after adding them in the symbols.ldt file, the result was the same.

The only change I have made that is different from the guide was to set the gAppUseBonding_d and gAppUsePairing_d to 0 as I was having some issues when reconnecting to the device but I do not think this has any effect on the updating part. By using the debugger I was able to see that the update seems to transfer correctly, however when the device resets I get a OTACFG_FW_UDPATE_FAILURE(0x4412d283) value for update_status which according to the data sheet: "Indicates failure to process sb3 file OR failure to erase/write update status to OTACFG page". Any clue as to why this would happen? I am sending a .srec file created from the binary utilities of MCUXpresso through the NXP IoT Toolbox application on an iOS device if that helps.

Kind Regards,
Ridvan

[Itzel_UV]

Hello,

I will be helping you at this case.

Could you tell me the SDK version that you're using?

[karamanr]

Hi, I am using the SDK_2.12.7_K32W148-EVK