STA5-SmartLink-command-guidance.md

@@ -4,6 +4,7 @@
 - [Designer](#designer)
 - [Purpose](#purpose)
 - [Requirement](#requirement)
+- [Flow Chart](#flow-chart)
 - [APIs](#apis)
 - [SmartLink data format](#smartlink-data-format)
 - [SmartLink data base structure](#smartlink-data-base-structure)
@@ -63,6 +64,35 @@ export
   └── libsocket.so
 </pre>
 
+## Flow Chart
+```mermaid
+graph TD
+  A[START] -->|Multi-thread| B(Socket Accepter thread)
+  B --> C(create_unix_server_socket)
+  C --> D(accept_unix_stream_socket)
+  D -->|Multi-thread| E(listener thread)
+  E --> F(Receive E_REQ_SUBSCRIBE command)
+  F --> G(Switch case by APP_TYPE)
+  G --> H{case MAIN_UI}
+  H --> I[Main UI message handler]
+  H --> J{case AA}
+  J --> K[Android Auto message handler]
+  J --> L{case CP}
+  L --> M[Apple CarPlay message handler]
+  L --> N{case BT_SRV}
+  N --> O[BT SRV message handler]
+  N --> P{case Others}
+  P --> Q[Others message handler]
+  P --> G
+  D -->|Multi-thread| R(listener thread)
+  R --> S(...)
+  D -->|Multi-thread| T(...)
+  A -->|Multi-thread| U(Key button thread)
+  U --> V(Detect /dev/input/event0)
+  A -->|Multi-thread| W(Rotary button thread)
+  W --> X(Detect /dev/input/event1)
+```
+
 ## APIs
 - To connect:
 <pre>