BLE can advertisement,but not to be connect?

[sheng]

I use same SDK to program the 1.nRF52_DK borad (on broad chip 52832) ,and 2.external program borad chip 52832.

Have a issue, 1.nRF52_DK borad is success to advertisement and connect, then 2.external borad is can advertisement,but not to be connect.

I use nRFConnect App tools.

Is may be hardward issus? Beacause I have a hardware version A ,it's no addition any component around to chip 51832.
And Another hardware version B,I have just addition the VDD capacity(10uF) and DEC4 capacity(105).But same issus,that can advertisement,but not to be connect.

[Matt]

Can you add some tracing code (eg. Segger RTT) to the external board's image to collect some debug info?

[sheng]

There is a phenomenon,when advertisement time interval is set to 40ms, the nRF52_DK borad is ok,but external board's time interval is wrong,maybe 1000ms~2000ms.

I do not know whether it is related..

[Hung Bui]

What do you mean by "no addition any component around to chip 52832" ? Could you edit the question and attach a photo of the board ?

Do you have the 32kHz crystal on the board(s) ?

Which firmware did you use ?

[sheng]

Hi Hung Bui, thanks you your reply. "no addition any component around to chip 52832" is mean the BLE module。 The code is wrong,because is be setting XTAL ,but the hardward is internal crystal.

So the issue is over. thks..