dfu_cmd_handler_set out of bound error

Question

I'm trying to get DFU working with LPN on the 833. The sequence I follow is: (Erase board) Flash Soft Device Flash Bootloader (Using mesh, but don't want serial) 
 Flash Device Page Flash Application However once I restart the application, DFU doesn't work because of the dfu_cmd_handler_set function. handler: 160407 (0x27297), end_get: 524288 (0x80000), bootloader 491520 (0x78000) It appears as though it's because the handler has a lower address than the bootloader. How am I supposed to have DFU running to perform the upgrade? Physical access to the device won't be possible later so OTA is imperative. Thanks!

Alex Ross · Accepted Answer

Hi Hung, Had a break through this morning, if anyone is looking to achieve what I added: uint32_t ble_dfu_buttonless_bootloader_start_finalize(void)
{
 uint32_t err_code;

 __LOG(LOG_SRC_APP, LOG_LEVEL_INFO,"In ble_dfu_buttonless_bootloader_start_finalize 
");

 err_code = sd_power_gpregret_clr(0, 0xffffffff);

 err_code = sd_power_gpregret_set(0, BOOTLOADER_DFU_START);

 // Indicate that the Secure DFU bootloader will be entered
 // m_dfu.evt_handler(BLE_DFU_EVT_BOOTLOADER_ENTER); This was not necessary

 // Signal that DFU mode is to be enter to the power management module
 nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_DFU);

 return NRF_SUCCESS;
}
 I then have a custom command that says "request bootloader" received over mesh. We also have a charger detect so I use that as a double check to say "Only enter bootloader mode if I'm on a charger". The steps then are: ->Program SD ->Program secure bootloader (should be in the SDK bin (not Mesh SDK) 
 ->Upload via DFU in nRFConnect (I used the app) Done I hope this helps someone else out!

dfu_cmd_handler_set out of bound error

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