Bluetooth on Raspberry

Work as Beacon

by hci

1. open hardware
   sudo hciconfig hci0 up
2. change its operating mode to “Low Energy Advertising“
   sudo hciconfig hci0 leadv 3
3. set the Pi’s Bluetooth to broadcast the iBeacon payload data.
   sudo hcitool -i hci0 cmd 0x08 0x0008 1E 02 01 06 1A FF 4C 00 02 15 C7 C1 A1 BF BB 00 4C AD 87 04 9F 2D 29 17 DE D2 00 00 00 00 C8 00

id	Byte Value	Description
	0x08	Defines the OGF as the Bluetooth Command Group 0x08
	0x0008	Defines the OCF so that we set the bluetooth advertising data
	1F	Defines the data length of our entire payload
	02	Data length of the next section, 2 bytes
	01	Data Type, defines that this section is flag data
	06	Defines the flag needed for Low Energy Advertising mode
	1A	Data length of the final section of the payload, 26 bytes
	FF	Data Type, defines that this section is manufacturer specific data
	4C	Defines the manufacturer ID, in this case apple (0x4c00)
	00	Second part of the manufacturer ID
	02	Defines the sub type, which in our case is an iBeacon
	16	Defines that the following data is “service data” for eddystone
	15	Data length of the subtype payload, which should be 21 bytes
	C7	Proximity UUID, 1st Byte
	C1	Proximity UUID, 2nd Byte
	A1	Proximity UUID, 3rd Byte
	BF	Proximity UUID, 4th Byte
	BB	Proximity UUID, 5th Byte
	00	Proximity UUID, 6th Byte
	4C	Proximity UUID, 7th Byte
	AD	Proximity UUID, 8th Byte
	87	Proximity UUID, 9th Byte
	04	Proximity UUID, 10th Byte
	9F	Proximity UUID, 11th Byte
	2D	Proximity UUID, 12th Byte
	29	Proximity UUID, 13th Byte
	17	Proximity UUID, 14th Byte
	DE	Proximity UUID, 15th Byte
	D2	Proximity UUID, 16th Byte
	00	Major 1st byte – Distinguishes devices using same UUID
	00	Major 2nd byte – Distinguishes devices using same UUID
	00	Minor 1st byte – Distinguishes devices using same UUID
	00	Major 2nd byte – Distinguishes devices using same UUID
	C8	Signal Power – Used to optimize distance calculations.

by BlueZ

1. Enable Experimental Flag for BlueZ
   sudo nano /lib/systemd/system/bluetooth.service
   Find a line starting with “ExecStart” and add “–experimental” at the end of the line
   ExecStart=/usr/libexec/bluetooth/bluetoothd --experimental
2. Download Example Code

wget www.kernel.org/pub/linux/bluetooth/bluez-5.43.tar.xz
tar xvf bluez-5.43.tar.xz
ls -l bluez-5.43/test/example-advertisement

Method 1

sudo bluetoothctl
help

Method 2

hciconfig //list devices
hcitool scan //scan