The SurePet Feeder uses a 802.15.4 based protocol called MiWi P2P. This is a protocol that is made by Microchip.

The following link shows someone who has captured some of the P2P frames and has mapped them to a spec:

https://github.com/alextoft/sureflap/issues/8#issuecomment-698580972

From the following link, it appears that the beacon is transmitted on channel 15:

https://github.com/Koenkk/zigbee2mqtt/issues/3261#issue-591745054

Ideally we would use the Zena sniffer, however I seem to of bricked it.

The Zena software allows for protocol decode of the MiWi P2P protocol.

So instead for now we are using a UZBee+.

After creating a simple sniffer tool, when the “setup” button on the SurePet device is pressed, the following packet is received:

b'+PDAI=1343C832FFFFFFFF6E2A02C0F9D5B370072FECE8\r\n'

The MAC address is printed on the bottom of the device, This matches the above packet.

1343C832FFFFFFFF6E2A02C0F9D5B370072FECE8

13=Length

So

43C832FFFFFFFF6E2A02C0F9D5B370072FECE8

6E2A02C0F9D5B370=Mac (reversed)

The P2P protocol is documented in the following document:

https://ww1.microchip.com/downloads/en/DeviceDoc/00001204C.pdf

So the full payload decodes as:

• 43C8=Frame Control
• 32=Sequence Number
• FFFF=Destination PAN ID
• FFFF=Destination Address
• Source PAN ID (0 bytes)
• 6E2A02C0F9D5B370=Source Address
• 072F=Payload
• ECE8=Frame Check

And the Frame Control:

43C8=