How to include buttonless DFU in existing SES Project

RE: How to include buttonless DFU in existing SES Project

Einar Thorsrud — Fri, 05 Aug 2022 13:18:33 GMT

That makes sense.

ble_dfu_buttonless_init() adds the buttonless DFU service, increasing the SoftDevice memory usage. If the application start address is too low or the SoftDevice configuration is not appropriate, you will get this error (see this thread).

(As a side note in case other come across this thread, NRF_ERROR_NO_MEM is also returned from ble_dfu_buttonless_init() when there is no bootloader present. And in that case you need to program the bootloader in order to avoid this.)

RE: How to include buttonless DFU in existing SES Project

Caleb Dueck — Fri, 05 Aug 2022 12:56:52 GMT

That is an important detail I should have mentioned.
err_code = ble_dfu_buttonless_init(&dfus_init);
I'm calling this which I added to my services_init() function which is called early in main

This was added as per the instructions in: novelbits.io/.../

RE: How to include buttonless DFU in existing SES Project

Einar Thorsrud — Fri, 05 Aug 2022 07:21:58 GMT

Hi,

What does your code look like around line 3551 in your main.c? Most importantly, which function call returned NRF_ERROR_NO_MEM?

RE: How to include buttonless DFU in existing SES Project

Tim — Thu, 04 Aug 2022 22:37:52 GMT

Unfortunately, I don't have enough experience (or time :-) to speculate about your error. One suggestion would be to try integrating buttonless DFU into an SDK BLE example like ble_app_uart. If you succeed, that might point you to something specific about your application.

Good luck!

Tim

RE: How to include buttonless DFU in existing SES Project

Caleb Dueck — Thu, 04 Aug 2022 16:41:17 GMT

Hello, that blog has been great! Thank you for sharing. I've successfully followed all his steps, using our code instead of nrf_blinky.
Unfortunately, after I flash the device I receive this error:

00> <error> app: ERROR 4 [NRF_ERROR_NO_MEM] at C:\Users\Caleb(CDUE)\repos\lancelot_p_fw\app\main.c:3551
00> PC at: 0x0003B77D

Reading this post suggests the issues is that I have not included a bootloader. However, I have indeed included secure_bootloader_ble_s132_pca10040.hex when merging the hex files.

Please let me know if you have a solution for this issue.

RE: How to include buttonless DFU in existing SES Project

Tim — Thu, 04 Aug 2022 04:18:10 GMT

I found this blog very helpful:

https://novelbits.io/ota-device-firmware-update-part-1/
https://novelbits.io/ota-device-firmware-update-part-2/
https://novelbits.io/ota-device-firmware-update-part-3/
https://novelbits.io/nrf52-ota-dfu-ble-part-4/

I implemented using the same SDK (15.3) and chip (nRF52832).

For our iOS app that users use to push new FW to BLE devices, I used Nordic's iOS DFU Library:

https://github.com/NordicSemiconductor/IOS-DFU-Library

Hope it helps.

Tim