Getting Started - Running Examples. Ninja not flashing

[Doroana]

So I was following the documentation.
Installed everything successfully.
And now I am trying to send the program to the nrf52840.

However when I do ninja flash<program> I get:
ninja: no work to do.

Following the tutorial I should get at least a list of connected devices.

I am using:
- Windows10
- nRF5 SDK for Mesh v4.0.0
- nRF5_SDK_16.0.0_98a08e2

[Doroana]

I got this:

Since I am seeing the nrf52840 as a folder, is it possible to flash programs by copying files to the folder?
I know that in some controllers you can do that by just dragging the elf or bin file.

I dragged the .elf from this folder but as expected did not work...

[Hung Bui]

Hi Doroana, 

Have you tried to flash the firmware manually using nrfjprog.exe : 

nrfjprog flash_light_switch_server_nrf52832_xxAA_s132_7.0.1  

I assume the first time you run "ninja flash_light_switch.." it was something else outputted not just "no work to do" ? 
You can try ninja clean and then run it again. 

[Doroana]

So I did all the steps again:
1) cmake -G Ninja -DTOOLCHAIN=gccarmemb -DPLATFORM=nrf52840_xxAA -DSOFTDEVICE=s140_7.0.1 -DSDK_ROOT=C:\Users\Doroana\Documents\Trigger\EDP\BLE_CV\nRF5_SDK ..
2) ninja light_switch_server_nrf52840_xxAA_s140.7_0_1
3) ninja flash_light_switch_server_nrf52840_xxAA_s140_7.0.1

Everything went fine except step 3:

[Hung Bui]

Ok, so now it's "No Device connected" not "no work to do."

This happens when your hardware device is not recognized by PC. 

Which hardware board are you using ? Do you have a nRF52840 DK ?  When you plug in do you see any harddrive added to the PC ?
Please try testing with nrfjprog or JLink Commander, this issue has nothing to with ninja. 

[Doroana]

Could you tell me what should I write to flash using nrfjprog?