dazzled and confused

Question

Hi, Okay I got my nRF52840 Dongle, plugged it in to my window 10, verified it shows up as USB device on window's Device Manger.

Checked and Red pulsating LED (LD2) was pulsing, meaning nRF52840 Dongle has entered the bootloader mode. Fired up the "nRF Connect".

Launch the <Programmer (experimental)> app. Selected the device, It displayed a Map showing BootLoader and some Application. Browse and

added my test hex file. Press <Write all to devkit> button, some programming happened, LD2 stop pulsating and following messages appeared

on the Log below nRF connect

23:08:33.6730

Application data folder: C:\Users\xxxxx\AppData\Roaming\nrfconnect\pc-nrfconnect-programmer

23:09:06.5490

Using USB SDFU protocol to communicate with target

23:09:06.5690

Protocol Version: 1 found

23:09:06.5710

Hardware: 52840 found

23:09:06.5760

Firmware: Bootloader found

23:09:06.5760

Firmware: Application found

23:10:32.8940

Parsing .hex file: C:\Users\XXX\Desktop\myNordic_Develop_all\ble_app_lightbulbP2-X5\Output\Debug\Exe\ble_app_lightbulbP.hex

23:10:32.8990

File was last modified at 7/17/2018, 1:03:10 PM

23:10:33.0810

Data block: 0x00026000-0x0003D7A4 (0x000177A4 bytes long)

23:12:01.9130

Hash is generated by SHA256

23:12:01.9370

Performing DFU. This may take a few seconds

23:12:06.1300

DFU completed successfully!

OKAY - It looks all good - looks like DFU got installed but where is my application (ble_app_lightbulbP.hex) which was what I wanted and selected.

Also noting is running, no advertising are happening. Am I missing something? Does this means that only DFU can be installed

on the dongle and my real application need to go through a smart-Phone (zipped package, nRFUtil). OR can I program my dongle just the way

I program my nRF52840 DK using the SES. I check around and read DFU info. most of them utilize Keil, which most of your example program

don't compile as they are greater then 32K. so please any suggestion how to proceed - please point to SES.

Another question, can I use your JTAG header pins on the Dongle and program my Hex file. I understand DFU is great tool to field upgrade an existing

device but right now all I am interested is to use my dongle as my nRF52840 DK and later install the BLE sniffer app.

Thanks

Michael · Answer

Hi jsayed 
 With regards to the second part of your question " Another question, can I use your JTAG header pins on the Dongle and program my Hex file. I understand DFU is great tool to field upgrade an existing 
 device but right now all I am interested is to use my dongle as my nRF52840 DK and later install the BLE sniffer app. " 
 I think this is described in the Debug output section of the DK users guide (pls see the link) 
 http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52%2Fdita%2Fnrf52%2Fdevelopment%2Fnrf52840_pdk%2Fif_mcu.html 
 
 Cheers 
 
 Michael