A question about NRF51822 advertising.

[Lenient Mely]

Hello,everyone.

If you have some suggestions,and you leave them,I would appreciate it very much.

I designed a pcb base on nRF51822. It can only be searched by mobile,at the moment of startup.If it was connected,it will not disconnect.However,If I disconnect it when it first started,I will not find it.

I guess it is undercurrent。If so,how can I fix it.

[awneil]

Before you did your own PCB, did you prove your software functionality on a Nordic Dev Kit?

Lenient Mely said:

If I disconnect it when it first started,I will not find it

You mean once it's been connected, then disconnected, then you can't "see" it again?

Are you sure that your code starts advertising after disconnecting?

Lenient Mely said:

I guess it is undercurrent

Do you? Why?

What is "undercurrent" ?

Again, this is the kind of thing that you should test on the Dev Kit - there's not point looking for problems in your hardware if it's a software issue!

[Lenient Mely]

Hi,awneil

Fristly,I'm very grateful for you can reply my question.

I have test my code on the Dev Kit.It's Ok. I'm sure the hardware has some  defect.It behaves strangely.

Yesterday,I can find it and connect it at a time.Today,I test my hardware,I can always find it,but I can't connect it,It always advertising.Maybe it always be reseted. This problem bothers me now because it worked well until yesterday.And I can't think of anything wrong with it yesterday.