BLE Sniffer not capturing all packets

[Paul E. Long]

I'm attempting to troubleshoot why my HM18 doesn't connect to the ESP32 over BLE. I'm now deep in the rabbit hole that is BLE sniffing so now I'm trying to determine if the adafruit BLE sniiffer tool will help me, and if there is sufficient support. If there's a better place to ask this question, that would be helpful as well.

To start with a specific problem to test sniffing, I use the BLE sniffer to capture packets between an HM18 and HM10. I connect using AT commands, and then send some ascii data from the HM18 to the HM10. When I look at the capture, I can see advertisements from HM18 which is the peripheral device. But as soon as I issue the AT+CONN command, I see no more traffic from the HM18. Why isn't it capturing the ASCII text I'm sending between the HM18 and HM10?

Thanks,

Paul

[Sigurd]

Hi,

I have not tested the "adafruit BLE sniiffer tool" only the nRF Sniffer, but there you need to select the device you want to follow in the device drop-down list in Wireshark, in order to sniff the connection. See Figure 5 in the nRF Sniffer User Guide v2.1. Also take a look at page 15 in the guide.

[Paul E. Long]

Great, I didn't see the toolbar in wireshark but after following the instructions to view->toolbars it now shows up.  It seems to be working now.  Thanks.