PowerPoint Presentation · 2020. 9. 26. · Connec table undirec ted Services: Heart Rate Battery...
Transcript of PowerPoint Presentation · 2020. 9. 26. · Connec table undirec ted Services: Heart Rate Battery...
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3 Advertising Channels and 37 Data Channels
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Heart rate
Device information
Battery service
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Refers to an (optionally)
included service.
UUID of the
characteristic
Additional
characteristic/value
information
Service UUID
.....
.....
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Peripheral (slave)
Server:
Has/collects the heart rate values
Updates the values to the client
using notifications
Can only transmit the values when
notifications are enabled.
Central (master)
Client:
Receives heart rate
values from the server
Controls when the
server can update
values
1. Initially, notifications are disabled
– notifications will not be transferred
2. Enable notifications, write to the CCCD
of heart rate measurement characteristic.
3. Update/transmit heart rate values
to the client using notifications.
...4. Disable notifications, write to the CCCD of
heart rate measurement characteristic.
5. Update/transmit heart rate values
to the client disabled
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or
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