v.4

main.py

@@ -1,18 +1,37 @@
 from fastapi import FastAPI
+import serial
+import threading
+from queue import Queue
+
+
+serial_port = "COM4"  
+baud_rate = 9600
+serial_conn = serial.Serial(serial_port, baud_rate)
+
+line = "0"
+
+
+def read_from_arduino():
+    global line
+    while True:
+        if serial_conn.in_waiting > 0:
+            line = serial_conn.read().decode()
+            print(line)
+            
+
+threading.Thread(target=read_from_arduino, daemon=True).start()
 
 app = FastAPI()
 
-count = 0
+@app.get("/pin_state")
+async def get_pin_state():
+    return {"pin_state": line}
     
-@app.get("/count")
-async def get_count():
-    global count
-    count += 1
-    return {"count": count}
 
 @app.get("/")
 async def root():
     return {"message": "Hello World"}
+
 if __name__ == "__main__":
     import uvicorn
     uvicorn.run(app, host="0.0.0.0", port=12345)