Introduction to BLE Service Discovery and GATT protocol

Introduction to BLE Generic Attribute (GATT) protocol by real examples, including service discovery, read/write descriptors and so on.

Agenda:

1. BLE protocol stack
1. Generic Attribute (GATT) Profiles
2. Attribute (ATT) protocol operations
2. Protocol examples
1. Discover all primary services
2. Find included services
3. Discover all characteristics of a service
4. Discover all characteristics descriptors
5. Write characteristics descriptor
6. Write without response
7. Notification
8. Read characteristics value

References

• Bluetooth Core Specification
  
• Bluetooth Low Energy - How to discover all Primary Services on a GATT Server, NXP
  
• Developing a Bluetooth Low Energy Application – Generic Attribute Profile (GATT), TI
  
• Bluetooth GATT: How to Design Custom Services & Characteristics [MIDI device use case], NovelBits
  
• Bluetooth low energy Characteristics, a beginner's tutorial, Nordic