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Creating an independent BLE beacon
#SFScon #SFScon22
Bolzano, Nov 11th-12th, 2022
●
Gabriele Scarton, gabriele.scarton@fos.it
2
My overview
#SFScon #SFScon22
3
Gruppo FOS overview
●
integration and software development
services
●
telecommunications services
●
research, development and prototyping of
innovative technological solutions
●
application and infrastructural outsourcing
#SFScon #SFScon22
4
The goal
●
Send data from a beacon to a control station using a
Bluetooth connection
●
Keep the system as independent as possible in every
part: hardware, software, visualization
#SFScon #SFScon22
5
The state of the art
#SFScon #SFScon22
●
Some “open” beacons provides access to a list of APIs,
not to the beacon itself: you can costumize your
project as far as the manifacturer allows it
●
Access to data from the manifacturer control station:
you need another connection to get them
6
Get Bluetooth data
●
BLE advertising packets provides
a lot of informations:
●
ID of the beacon
●
RSSI
●
Manifacturer data
●
BLE avertising data are readable
and available with a BLE
scanning, without having access
to the beacon
#SFScon #SFScon22
Scan the QR code
for the SFSCon 2020
presentation on
scanning Bluetooth
beacons!
7
Get other data
●
Goal: control the beacon firmware
and lot of sensors availability
●
Proposed solution: ESP32 CAM
●
GPIO pins
●
Omnivision camera
●
MicroSD slot
●
Micro USB adapter
●
Open soursce SDK: ESP-IDF
●
Arduino library
#SFScon #SFScon22
8
Setting up ESP32
●
Set up ESP32 as a Bluetooth server
●
Example and tutorial on ESP-IDF Github page
●
Setting up GATT (Generic ATTribute) profile:
●
One characteristic for receiving data from control station →
managing requests
●
One characteristic for sending data managing sensors data
→
and encapsulate the values
#SFScon #SFScon22
9
Setting up the control station
●
Set up beacon identification
●
Bluetooth address of the beacon
●
GATT UUIDs of profile declared in the beacon
●
Setting up the connection:
●
Loop cycle: waiting for data from the beacon for some time,
check if there is a command to send, repeat
●
Using Bluez: it’s not meant to be used as a script
●
Using Bluepy: it doesn’t provide all BLE data of the packet
#SFScon #SFScon22
10
Next step
BLE Scanning ESP32 Beacon
#SFScon #SFScon22
Complete independent beacon highly customizable
Thanks for your attention!
Questions?
#SFScon #SFScon22
Bolzano, Nov 11th-12th, 2022
●
Gabriele Scarton, gabriele.scarton@fos.it

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  • 1. Creating an independent BLE beacon #SFScon #SFScon22 Bolzano, Nov 11th-12th, 2022 ● Gabriele Scarton, gabriele.scarton@fos.it
  • 3. 3 Gruppo FOS overview ● integration and software development services ● telecommunications services ● research, development and prototyping of innovative technological solutions ● application and infrastructural outsourcing #SFScon #SFScon22
  • 4. 4 The goal ● Send data from a beacon to a control station using a Bluetooth connection ● Keep the system as independent as possible in every part: hardware, software, visualization #SFScon #SFScon22
  • 5. 5 The state of the art #SFScon #SFScon22 ● Some “open” beacons provides access to a list of APIs, not to the beacon itself: you can costumize your project as far as the manifacturer allows it ● Access to data from the manifacturer control station: you need another connection to get them
  • 6. 6 Get Bluetooth data ● BLE advertising packets provides a lot of informations: ● ID of the beacon ● RSSI ● Manifacturer data ● BLE avertising data are readable and available with a BLE scanning, without having access to the beacon #SFScon #SFScon22 Scan the QR code for the SFSCon 2020 presentation on scanning Bluetooth beacons!
  • 7. 7 Get other data ● Goal: control the beacon firmware and lot of sensors availability ● Proposed solution: ESP32 CAM ● GPIO pins ● Omnivision camera ● MicroSD slot ● Micro USB adapter ● Open soursce SDK: ESP-IDF ● Arduino library #SFScon #SFScon22
  • 8. 8 Setting up ESP32 ● Set up ESP32 as a Bluetooth server ● Example and tutorial on ESP-IDF Github page ● Setting up GATT (Generic ATTribute) profile: ● One characteristic for receiving data from control station → managing requests ● One characteristic for sending data managing sensors data → and encapsulate the values #SFScon #SFScon22
  • 9. 9 Setting up the control station ● Set up beacon identification ● Bluetooth address of the beacon ● GATT UUIDs of profile declared in the beacon ● Setting up the connection: ● Loop cycle: waiting for data from the beacon for some time, check if there is a command to send, repeat ● Using Bluez: it’s not meant to be used as a script ● Using Bluepy: it doesn’t provide all BLE data of the packet #SFScon #SFScon22
  • 10. 10 Next step BLE Scanning ESP32 Beacon #SFScon #SFScon22 Complete independent beacon highly customizable
  • 11. Thanks for your attention! Questions? #SFScon #SFScon22 Bolzano, Nov 11th-12th, 2022 ● Gabriele Scarton, gabriele.scarton@fos.it