I'm having trouble maintaining a connection between my nRF52832 and Raspberry Pi. I followed the step by step guide (making sure to use the correct IOT SDK for my board), and I discovered the MAC address of the advertising device. However, when I attempt to connect to this device in the terminal, I receive "connect error: Host is down (112) " even though entering "sudo hcitool lecc <MAC address>" yields "Connection handle 64." Upon further inspection via bluetoothctl, I noticed that the Raspberry Pi and nRF were connecting, but the nRF would quickly terminate the connection. What could be the cause of this issue? Is something wrong with my nRF52832?