OTA DFU cant find bootloader

RE: OTA DFU cant find bootloader

Sigurd — Mon, 24 Oct 2022 11:36:21 GMT

[quote user="JGusler"]I might be confused on an earlier step in this process. Am I still flashing the hex that contains the sd, bootloader, and buttonless dfu hex files? Or should i be flashing ONLY the secure_bootloader_debug hex?[/quote]

Try sd + secure_bootloader_debug + buttonless app

[quote user="JGusler"]I get but it just loops[/quote]

Looks like it's not entering / staying in bootloader mode then.

[quote user="JGusler"]and I get the exact same result with one small exception, this time the DFU bootloader IS found[/quote]

But it still disconnects? Did you update the clock settings in the bootloader project?

Can you try to start a debug session in the debug-bootloader project?

RE: OTA DFU cant find bootloader

JGusler — Thu, 20 Oct 2022 13:09:52 GMT

I might be confused on an earlier step in this process. Am I still flashing the hex that contains the sd, bootloader, and buttonless dfu hex files? Or should i be flashing ONLY the secure_bootloader_debug hex?

Yes that log in particular is from the app via rtt output, the other logs I was providing were from the nrf connect app

RE: OTA DFU cant find bootloader

Sigurd — Thu, 20 Oct 2022 09:20:07 GMT

Hi,

1) After you in nRF Connect mobile app, request it to go into bootloader mode, do you see the bootloader advertise? or do you still see the regular application still advertising?

2) The log you provided is from the app, right? Do you have log from the bootloader project as well?

3) Could you post the nRF Connect mobile app log?

RE: OTA DFU cant find bootloader

JGusler — Wed, 19 Oct 2022 17:25:14 GMT

I swapped to that bootloader project This is the RTT output I get but it just loops this and I still get the disconnect after the gatt.discoverServices()

00> <info> app: Device is preparing to enter bootloader mode.
00>
00> <info> app: Disconnected 1 links.
00>
00> <info> app: In ble_dfu_buttonless_bootloader_start_finalize
00>
00> <info> app: Device will enter bootloader mode.
00>
00> <info> app: Power management wants to reset to DFU mode.
00>
00> <info> app: Power management allowed to reset to DFU mode.
00>
00> <info> app: Setting vector table to bootloader: 0x000F8000
00>
00> <info> app: Setting vector table to main app: 0x00027000
00>
00> <info> app: Buttonless DFU Application started.
00>
00> <info> app: But this time improved!

RE: OTA DFU cant find bootloader

Sigurd — Wed, 19 Oct 2022 11:05:35 GMT

Hi,

Could you try the debug variant of the bootloader project, and see if you can get any log output from the bootloader?

The project is in this folder:

sdk_folder\examples\dfu\secure_bootloader\pca10056_s140_ble_debug

RE: OTA DFU cant find bootloader

JGusler — Tue, 18 Oct 2022 18:10:51 GMT

I dont have a sniffer, I'm trying to update from my phone using the android nrf connect app since I dont have a dongle.

I have just tried the buttonless example with only tiny modifications (rtt logging and a couple clock changes) and I get the exact same result with one small exception, this time the DFU bootloader IS found

RE: OTA DFU cant find bootloader

Sigurd — Tue, 18 Oct 2022 15:07:35 GMT

1) Does it work with the ble_app_buttonless_dfu example (make changes to use LF RC in sdk_config.h)?

2) Do you have a sniffer trace? https://www.nordicsemi.com/Products/Development-tools/nrf-sniffer-for-bluetooth-le

RE: OTA DFU cant find bootloader

JGusler — Tue, 18 Oct 2022 14:57:59 GMT

I have implemented that change and tried again but I am still getting the same issue where it eventually disconnects with a GATT CONN TIMEOUT error. That being said, the behavior leading up to that was slightly different in repeated cases.

It begins the timeout for scanning for the DFU bootloader

Connection parameters updated

No DFU bootloader found

DFU service started

Firmware file opened succesfully

Two 1 second waits

Connecting to DFU target...

Connection (with autoconnect = false)

gatt.discoverServices()

DISCONNECT 5 seconds after the parameters update but 8 seconds after the scanning begins

RE: OTA DFU cant find bootloader

Sigurd — Tue, 18 Oct 2022 14:28:47 GMT

[quote user="JGusler"]5) (This might be an issue) On the application I have the LF source set to RC, but on the bootloader I had it set to XTAL.[/quote]

Yes, if you don't have LF crystal on your custom board, make sure to set LF source to RC in the bootloader project as well.

RE: OTA DFU cant find bootloader

JGusler — Tue, 18 Oct 2022 14:07:46 GMT

1) SDK 17.1.0
2) I am using my own customized ble_app_uart and adding on buttonless DFU capability from the provided examples.
3) I get RTT output until "<info> app: Device is preparing to enter bootloader mode" then it cuts off after and is stuck
4) Custom board using nRF52840
5) (This might be an issue) On the application I have the LF source set to RC, but on the bootloader I had it set to XTAL.
6) nRF52840
7) I tried changing the WDT timout_ticks in nrf_bootloader_wdt_feed_timer_start to 60000 given other threads on DevZone to no avail. I also changed the contents of the public key.

RE: OTA DFU cant find bootloader

Sigurd — Tue, 18 Oct 2022 13:29:12 GMT

Hi,

1) What SDK version?

2) Are you using the ble_app_buttonless_dfu example?

3) Any log output? Either RTT or UART backend

4) DK or custom board?

5) If it's a custom board, do you have a LF crystal on your board?

6) What nRF52 device?

7) Have you done any changes to the bootloader?