Application won't start after OTA DFU Device Firmware update

RE: Application won't start after OTA DFU Device Firmware update

Amanda Hsieh — Thu, 04 Nov 2021 07:08:38 GMT

Happy to know it works.

-Amanda

RE: Application won't start after OTA DFU Device Firmware update

idavenport — Wed, 03 Nov 2021 16:23:38 GMT

And thanks for the tip on nrf_drv_clock_lfclk_is_running . I think we will use that in future.

RE: Application won't start after OTA DFU Device Firmware update

idavenport — Wed, 03 Nov 2021 16:22:21 GMT

We did get it working. We had some memory map issues as well after we got the double clock initialization worked out and those two together allowed us to program our custom app OTA and have it run.

RE: Application won't start after OTA DFU Device Firmware update

idavenport — Wed, 03 Nov 2021 14:42:07 GMT

We are using the LF crystal. We do have one on our custom HDT board. The app runs fine on the LF crystal when we run the app by itself, without the bootloader and softdevice starting at 0x0000 in flash. It only has problems when it is retargeted with nrfutil to run at a higher address. It did take us a while to make tickless sleep work. Is it possible that any of the things we had to do to make tickless sleep work with FreeRTOS could cause problems when retargted in memory and made to work in the presence of the bootloader and softdevice?

RE: Application won't start after OTA DFU Device Firmware update

idavenport — Wed, 03 Nov 2021 14:38:27 GMT

Thanks, our app does run without issue. It only has problems when we package it with nrfutil and send it OTA.

RE: Application won't start after OTA DFU Device Firmware update

Amanda Hsieh — Wed, 03 Nov 2021 12:54:00 GMT

Hi,

Seems you can use BLE bootloader on the nRF52833 custom board to update with HID keyboard example without issue. Right?

[quote user=""]Once we run our own code, we hit what appears to be an assert.[/quote]

You should make sure the app run without issue before using it to update as a package.

What LF clock source are you requesting ? on-chip RC oscillator or LF crystal?

If you are using a custom board, and requesting the LF crystal as LF clock source, do you have a LF crystal on the custom board?

nrf_drv_clock_lfclk_is_running function can be polled to check if the clock has started.

Regards,
Amanda

RE: Application won't start after OTA DFU Device Firmware update

idavenport — Wed, 03 Nov 2021 06:10:02 GMT

Attached is our .zip file from nrfutils if that helps. Also note that when we choose the S113 pca10100 (nrf52833) example project of the HID keyboard, we can package that hex file up with nrfutil and download it and have the HID keyboard show up when we scan with nrfConnect, so we know OTA can work on our hardware.
devzone.nordicsemi.com/.../HDT_5F00_NG_5F00_App_5F00_1453_5F00_NoClkInit.zip