Bluetooth pairing: Start Here

The first step in pairing Cato depends on Catos current state. This is best determined by observing device LEDs

Please refer to THIS TABLE determine your state and return here.

Follow the instructions corresponding to your device’s state.

Advertising

• If your device is indicating the advertising state, then it should appear in all bluetooth discovery lists.
• Select Cato from the bluetooth discovery list.
  • If you receive a prompt to “Pair” or “Bond” — select yes
  • (iOS) pairing will fail if you select “No”
• Your device should now be paired.

Non-Discoverable (a.k.a. BT_NoConn)

• In this state, Cato is actively trying to connect to a specific device that it cannot find.
• This happens when the bluetooth bond is saved, but the associated device is not available.
• The most common causes of this state:
  • User removes (“forgets”) Cato from the Bluetooth list of the connected device.
  • The connected device is out of range, or powered off.
• The solution to exiting this state is:
  • Reset the bond information. This requires an operation called a Peer Erase.

Charging

• If your device is on the charger, and the LED informs you of this, it must be connected
  • In order to see the charge indicator, the device or else it would be displaying advertising or Non-Discoverable
• Jump to the instructions for “Connected”

Connected

• If your LED is off, but Cato is not controlling the device you expect it to be controlling, it is likely discharged.
• If Cato is controlling the device you expect, but you’d like it to control a different device, you have two choices.
  • You can either perform a Peer Select operation to an unused Identity, and create your new connection there, or you can overwrite your current peer.
  • To overwrite your current peer, do one of the following:
    • disconnect from your central device, then jump to the “Non-Discoverable” instructions
    • Perform a Peer Erase, then jump to the “Advertising” instructions

Helpful Vocabulary

Cato is a Bluetooth Peripheral Device. (Other peripherals are your bluetooth mice, speakers, or smart-home controllers)

Devices that peripherals pair with are called “Bluetooth Central Devices” (Like your computer, smartphone, or tablet)

A role-agnostic term, Peer refers to in-range bluetooth devices.

When Cato connects to a central, it saves information called a Bond that helps it reconnect in the future.

Cato can save a bond to multiple different Peers (centrals).

We call each slot in which Cato can save a bond “a Peer Identity” and we denote those with parentheses after the name (Like (1), (2), or (3)).

The process of choosing which saved bond is currently active is called Peer Selection