Bootloader DFU stop advertising after updating new firmware

[Geek]

Hello,

I'm using this example of code (nRF5_SDK_11.0.0_89a8197\examples\dfu\bootloader\pca10040\dual_bank_ble_s132\arm5_no_packs) with my custom board  to perform a dfu. So in this it"s seems to support use of button but in my case there is no button on board so i disabled the below code:

//dfu_start |= ((nrf_gpio_pin_read(BOOTLOADER_BUTTON) == 0) ? true: false);

and all  related function thats use BOOTLOADER_BUTTON.

1. is the desactivation of the button code can run the app as if there was no button on board or there is another trick to enter the DFUmode without using the button. ? 

2. I have another issue ; i have downloaded an hex file over the air, the DFU work well , and bootloader give control to the application but stop advertinsing.as "DfuTrgt" si i can't perform another dfu . Do you have any idea where and how to change code  in order to perform dfu again even if application ?

Best regards

[Hung Bui]

Hi Geek, 

Yes, we have the buttonless example that can do exactly what you looking for. Read about it here and here. I have a note about it in my blog here as well. 

[Geek]

Hi Hung Bui,

Actually i can perform with the example provideed in the sdk11, i have only  disable the use of button and it work as i expected. I would like to use sdk11 not sdk13 with the buttonless exemple. So im looking for solution with the use of sdk11 exemple. 

I have already read your article about buttonless dfu but it doesn't fit actually my need. So, i look for solution of  why i can't perform more DFU and why my bootloader DFU stop adverttising once application start runing ?

[Hung Bui]

You can modify APP_ADV_INTERVAL inside dfu_transport_ble.c 

[Geek]

#define APP_ADV_INTERVAL                     MSEC_TO_UNITS(100, UNIT_0_625_MS) 

I set this variable to 100, is a correct value or i should make it bigger than 100 ?

[Hung Bui]

If you set it to 100 it will advertise at 100-110ms (+10ms randomized to avoid interference) interval. You are free to set it from 20 (ms)to 10000 (ms)

[Geek]

Thanks a lot,

i will try and share with you result :).

Can i use the SDK11 and this bootloader  with nrf52840, because i plane to move all my developement to this plateform.

Is the SoftDevice s132_v2.0.0 still compatible with nrf52840?

[Hung Bui]

Hi, 

I don't think we have done any qualification of nRF52 with S132v2.0. If you want to use NRF52840 I would suggest to use S140. You would need to port the application in SDK v11 to use S140 instead. 
However we strongly suggest you to use our latest SDK for new development.