here i want to understand the architecture of bluez (Bluetooth Stack Protocol).

I understood how bluetooth enable in module. its enable by up the BT_EN pin in this Bluetooth Chip. After attacth this device with HCI UART to Bluez for communication.

i want to know about bluez architecture and how its works.

Here i put one image of bluez overview diagram . Any please Explain me What is Bluez Core in this diagram.

enter image description here

Please explain me the flow of this diagram how bluez works in bluetooth devices.

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