ble disconnection in dfu mode

[prateek]

Hi All,

i am working on SDK-14.2, i am facing issue with ble disconnection in dfu mode.

by using nrf-Connect in mobile i am upgrading the firmware, but it lost connection when dfu reaches 15-20%. after that it re-connect with device and still in dfu mode.

when i re-Select  the zip file. it start again where dfu stops.

there is one more problem with the speed, it takes around 5-7 min to complete the dfu process.

please see the log in the snapshot.

please help me to resolved the issue.

Thanks,

Prateek

[AndreasF]

Hi Prateek.

Which examples are you using? Are you using any of the DFU bootloader examples, and which one?

- Andreas

[prateek]

Hi Andreas,

I am using my custom code with the help of DFU Bootloader Example.

In Previous, i am using sdk-11 which works fine in dfu and i am not getting any issue with DFU, while currently i am upgrading my sdk to 14.2 in which i am getting this issue.

Thanks,

Prateek

[AndreasF]

Hi Prateek.

Have you debugged your code while you try to perform the DFU to see where the problem occurs?

- Andreas

[prateek]

Hi Andreas,

i am trying to debug the code, it seems that error: GATT_Connection Timeout.

[AndreasF]

Hi Prateek.

Have you defined DEBUG in the preprocessor? If not please define DEBUG.

And add a break point to NRF_LOG_ERROR("Received an error:0x%08x!", error_code); in the function void app_error_handler_bare(uint32_t error_code)

This is the function found in main.c in the bootloader_secure_ble project:

void app_error_handler_bare(uint32_t error_code)
{
    (void)error_code;
    NRF_LOG_ERROR("Received an error: 0x%08x!", error_code);
    NVIC_SystemReset();
}

What error code do you get?

Please post it.

- Andreas

[prateek]

Hi Andreas,

i am not able to debug this due to using armgcc, can you help me any other way to resolved this error.

Thanks.

[AndreasF]

Hi Prateek.

I really recommend that you install Segger Embedded Studio and use that for your development, you can get a free licence with no limitations when you are working with Nordic products, there is an introduction and install guide on our infocenter. There is not much more I can say without debugging your code, which I dont have. So I recommend you install Segger and debug, or attach your project in this question.

- Andreas

[prateek]

Hi, 

I am getting  error code

1-  0x08 - Connection timeout error

2- 0x85 - Gatt error 

3- 0x16 - Gatt connection terminate local host.

what can i do next?

[AndreasF]

Hi Prateek.

Could you please upload your project so I can have a look at it?

- Andreas