how can I check ble connection

[Rita]

Hi, I am now studying on the basis of advertising tutorial example.

When I connect to the device, I want to turn on the led4 in the main loop(To just study), but I don't know how can check connection. (It has nothing to do with led1)

I'd appreciate it if you could give me a comment or post link that can help.

[MAHI]

Hi Rita,

Nordic has designed the SDK like this when the ble device is advertising the led1 blinks and when the connection is done between 2 ble devices led1 stops blinking and please mention the what services are u using and check where the leds_init is done and modify it. Hope it will help.