4. Bluetooth Protocol Stack
4
樹莓派上的
藍牙模組
Connects upper protocol to
application (partial list)
Bluetooth serial port
User data
Connects host to module
Link management
Packet construction
Physical link
APPLICATION
RFCOMM
L2CAP
Link Manager
Baseband and Link Controller
Radio
Host Controller Interface
OBEX WAP TCS SDP
Two-Way
Voice
Data
Control
Host
Module
19. 什麼是MQTT ?
• MQTT is a machine-to-machine (M2M)/"Internet of Things"
connectivity protocol. It was designed as an extremely lightweight
publish/subscribe messaging transport.
19
鏈結層
圖片來源:https://swf.com.tw/?p=1002