Error While Connecting a Device : "Error: Unknown input."

[salmanfarisvp]

First of thanks for the node, I'm using this with raspberry pi and trying to read sensor value from a silicon lab dev board.

also noticed that, it's not outputting anything on debug window when we scan.

I used example flow, and changed that MAC as per the device address.

[hkayann]

Hi @salmanfarisvp,

You should start scanning, while it is scanning, you should insert your MAC address. Have you done like that?

[salmanfarisvp]

Hi @hkayann , Thanks for the swift replay, Sorry Where should I insert the MAC?

[hkayann]

Your setup is correct. You should scan with BLE Scanner. While it is scanning, you should insert your MAC to BLE Connect.

[salmanfarisvp]

Thanks @hkayann ,

Now I am getting.

Here is my config

[hkayann]

This means that your peripheral (silicon lab dev board) is not allowing subscriptions. You need to fix the code/setting on your peripheral, it is not related to nodes/Pi.

[salmanfarisvp]

But I can easily read the same service with a mobile phone!

[hkayann]

Mobile applications like nRF Connect can bypass that one I guess. These nodes are mainly created for getting data from microcontrollers like Arduino Nano 33 BLE Sense. From the arduino/peripheral side, I am allowing subscriptions via BLEShortCharacteristic temperatureCharacteristic( BLE_UUID_TEMPERATURE, BLERead | BLENotify );. Here BLENotify allows subscribing to that certain characteristic.

If you have a similar thing, please have a look how you can allow that, because I am sure, there is nothing we can do from node/central side. If the issue persists it might worth to ask it in stackoverflow.com as well.

[hkayann]

I am closing as this should be handled from peripheral's side.

[salmanfarisvp]

Thanks @hkayann