nrf52832 dfu buttonless

[parthee]

services_init() issue 

ble_dfu_buttonless_init_t dfus_init =
{
.evt_handler = ble_dfu_buttonless_evt_handler
};
err_code = ble_dfu_buttonless_init(&dfus_init);
APP_ERROR_CHECK(err_code);

After compiling shows no error and while debugging Error Code 7 will come.

SDK - 17.0.2

nRF52832 - BMD 350 module 

[parthee]

ERROR 7 [NRF_ERROR_INVALID_PARAM] at C:\u-blox\nRF5_SDK_17.0.2_d674dde\examples\ble_peripheral\ble_app_uart_working_dfu\main.c:814
PC at: 0x0002FDA3

[parthee]

Error fixed. Its working but when am connected and send it to dfu application source file following error logs will come.

how to add a bootloader file ? if it needs, can i upload it separately?  

Log Data :

<info> app: Connected
<info> app: Data len is set to 0xF4(244)
<info> app_timer: RTC: initialized.
<info> app: Debug logging for UART over RTT started.
<info> app: Connected
<info> app: Data len is set to 0xF4(244)
<info> app_timer: RTC: initialized.
<info> app: Debug logging for UART over RTT started.
<info> app: Connected
<info> app: Data len is set to 0xF4(244)

[Sigurd]

Is it ble_dfu_buttonless_init() that returns NRF_ERROR_INVALID_PARAM, or is it some other function in main.c ?