Passcode in nRF52840

[Sangram singh]

Dear sir,

I wants to connectivity from mobile to nRf52840-sdk using passcode, so any default code available or not please suggest

[Hung Bui]

Hi Sangram, 

If you want to have an example that show how to do pairing with passkey, you can have a look at the \examples\ble_peripheral\ble_app_gls example. The documentation is here.

[Sangram singh]

I have already tested this example (ble_app_gls example)  but not working properly, pls. suggest what is the default passcode in ble_app_gls example. 

[Hung Bui]

If you do a search, you can find many cases show you how to do static passkey. 
For example this: https://devzone.nordicsemi.com/f/nordic-q-a/35675/how-to-use-static-passkey-for-a-no-display-no-output-peripheral

But first make sure you know how to use normal passkey (random generated).

[Sangram singh]

dear sir,

I have no idea about normal passkey (random generated). pls. suggest for understanding

[Hung Bui]

Please study the code of the ble_app_gls example. And get familiar on how the passkey is printed out on UART. Then you can combine the code to set the passkey using sd_ble_opt_set().

You can read more about the passkey pairing here.

[Sangram singh]

Ok, pls. tell me one one think that which variable store random generated passkey in ble_app_gls example

[Hung Bui]

Have you studied the code, please have a look inside ble_evt_handler() check for BLE_GAP_EVT_PASSKEY_DISPLAY event.