DFU SDK13 buttonless - DfuTarg appears for few seconds

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Vidar Berg — Tue, 12 Dec 2017 11:35:17 GMT

Please refer to this thread: devzone.nordicsemi.com/.../

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Tue, 12 Dec 2017 08:25:10 GMT

one more question- how to correct disable WDT from main app when I call bootloader? Or how correct to feed WDT in the bootloader?

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Tue, 12 Dec 2017 07:56:36 GMT

Yes!!!! thanks. This was due to WDT. I disabled it and now works good with one switch to boot.

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Vidar Berg — Tue, 12 Dec 2017 07:10:03 GMT

Are you use the Watch dog timer in your application? In that case you must reload it in the bootloader.

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Mon, 11 Dec 2017 12:18:31 GMT

Hi! Thanks.

with commented and add debug code same result like attached log:

void app_error_handler_bare(uint32_t error_code)
{
NRF_LOG_INFO("Az_app_error: 0x%08x!\r\n", error_code); // ###del

(void)error_code;
NRF_LOG_ERROR("Received an error: 0x%08x!\r\n", error_code);
//    NVIC_SystemReset();

}

If from main app I send reboot comand and if I have or button pressed or NRF_POWER->GPREGRET == BOOTLOADER_DFU_START I have 2 times restart. But If I still press button, I read again it and than bootloader works fine. Is it no normal behavior.

project downloaded here

I just changed cristall settings to RC

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Rune Holmgren — Mon, 11 Dec 2017 10:19:21 GMT

Hi Mikhail,

I had a look at this together with Ketil. It looks like your system is being reset shortly after it starts advertising. This typically means that an error has occurred somewhere and the "APP_ERROR_CHECK" will then call "app_error_handler_bare" which by default resets the system. You need to figure out which error is causing the reset and resolve the cause of the error. I would recommend altering the error handler function so that it doesn't reset but rather loop indefinitely. That way you can do logging in the error handler. Further, you need to find the error check which failed. I typically use a debugger and set breakpoints to see which one is actually failing.

(When the issue has been resolved, put back the reset in the error handler. It's there as a recovery mechanism for end-user products.)

If you send me the files you have altered in the bootloader I might be able to reproduce the issue and tell you how to resolve it.

Best regards, Rune Holmgren

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Thu, 07 Dec 2017 15:30:16 GMT

What can I see from debug info: after start normal app, I transfer to boot mode. INFO:Inside main After that bootloader start and last line: 0> :DEBUG:After SOFTDEVICE_HANDLER_APPSH_INIT Next, for unknown reason bootloader restarted and transfer manage to main app with 0> :DEBUG:Running nrf_bootloader_app_start with address: 0x0001f000

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Thu, 07 Dec 2017 14:32:09 GMT

Hi! Did you looked my log? Could You help me to decide this step with bootloader?

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Wed, 06 Dec 2017 14:20:50 GMT

I added file into first post. This log after send to UART command.

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

ketil — Wed, 06 Dec 2017 12:49:01 GMT

OK. See the Debugging with Real Time Terminal tutorial for information on how to see the output.

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Wed, 06 Dec 2017 10:31:02 GMT

I compile and flash version pca10040_debug. Same behavoir. I don't know how to catch it. may be I forgot to mention, but I merge and flash my app like Appendix 1. Advanced features in a devzone.nordicsemi.com/.../ link. Therefore I don't have any possibility to flash bootloader in debug mode via keil.

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Wed, 06 Dec 2017 09:52:46 GMT

additional info: I use

D:\...\examples\dfu\bootloader_secure_ble\pca10040\

bootloader.

In the my app via UART I send command like on first message.

I don't use buttonless DFU bootloader. I just use code for UART sending. What my next step?

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

Mikhail — Wed, 06 Dec 2017 09:15:24 GMT

Hi! Thanks for answer. I'll try to do it and will write result.

RE: DFU SDK13 buttonless - DfuTarg appears for few seconds

ketil — Tue, 05 Dec 2017 13:35:57 GMT

Hi,

Your code looks correct. We will need more information in order to find a solution. Could you try running the debug version of the buttonless DFU example and look at the RTT output? It should tell you where the program fails.

Ketil