Hello,
I am working on a custom board using CC2650. At first sight the hardware has no obvious problems, including the RF part - I have tested sending and receiving of packets between custom board and Launchpad using Smart RF studio and this works fine. Advertising also goes well - the device can be seen in the device list of phone when scanning for devices. However, there is a strange situation - when trying to connect the custom device from the phone it is not possible. When downloading a Launchpad board with the same stack & application, it does connect correctly. I am seeking ideas where to search for the problem and how to debug it.
Especially, on the communication side the custom board and Launchpad should not differ, MCU is also identical. In case advertising is fine, and sending and receiving packets by Smart RF studio is fine, could the problem be still in the hardware? There is a strange phenomenon that the connection between mobile phone and target board was once possible in the evening, however, without any modification, on the next day it was able to advertise, but not able to connect...