OTA over BLE from nrf2840 central to nrf52840 using gatt

[sowmiya]

Hai ,

           I am using nrf52840 and 15.2 SDK  for ota over BLE. I  have made bootloader for OTA over BLE and tested same with nrf connect application using dfu package zip file. firmware is upgraded successfully and working fine.

          Now I need to upgrade firmware using  NRF52840 to another nrf52840 , as per the protocol i  have to send ping response , create object , init file ,check and so on.. 

sending ping response to bootloader but not getting any response for the ping response . traced the log from nrf connect application . have to write on 0x0001 characteristic , what is the correct way to write on characteristic , i am using ble_app_blinky_c example .

Kindly let me know how to write on particular characteristic on ble central?

thanks,

sowmiya

[Hung Bui]

HI Sowmiya, 

It sounds right. You need to change the bootloader to debug mode (no optimization, may need to move it down in flash) and debug it. 
Put a breakpoint where the error thrown "<error> nrf_dfu_req_handler: Object size must be page aligned" (inside on_data_obj_create_request() ) and please check why it's run into that error. 

You need to get debugging work otherwise it will be very difficult for you to develop your DFU master. 

[sowmiya]

hai,

 Its working fine, found the issue on debugging the bootloader.

 Thanks for your support. I am closing this now.