Bluetooth Basics
Bluetooth profile
github.com/espressif/arduino-esp32/tree/master/libraries/BluetoothSerial/src
API Reference » Bluetooth API
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API Reference » System API » Interrupt allocation
API Reference » Networking APIs » TCP/IP Adapter
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API Reference » Error Codes Reference
API Reference » Configuration Options
Class of Device/Service = CoD
Bluetooth CoD: Bluetooth Class of Device/Class of Service Explained
The Class of Device/Service field
Bluetooth Class of Device/Service (CoD) Generator