init

scripts/serial_command.py

@@ -0,0 +1,67 @@
+import serial
+import sys
+import time
+
+PORT = "/dev/ttyUSB0"
+BAUDRATE = 115200
+TIMEOUT = 2
+MAX_WAIT = 10
+
+COMMAND = "bdinfo"
+
+try:
+    with serial.Serial(
+        port=PORT,
+        baudrate=BAUDRATE,
+        timeout=0.2,
+        write_timeout=TIMEOUT
+    ) as ser:
+
+        print(f"Connected to {PORT}", flush=True)
+
+        # Clear old serial data
+        ser.reset_input_buffer()
+
+        # Send command to U-Boot
+        ser.write((COMMAND + "\r").encode())
+        ser.flush()
+
+        print(f"Command sent: {COMMAND}", flush=True)
+        print("------ U-Boot Response ------", flush=True)
+
+        response = bytearray()
+        start_time = time.monotonic()
+        last_data_time = start_time
+
+        while time.monotonic() - start_time < MAX_WAIT:
+
+            if ser.in_waiting:
+                data = ser.read(ser.in_waiting)
+                response.extend(data)
+
+                # Print response in real time
+                print(
+                    data.decode("utf-8", errors="replace"),
+                    end="",
+                    flush=True
+                )
+
+                last_data_time = time.monotonic()
+
+            # Stop when no new data arrives for 2 seconds
+            if response and time.monotonic() - last_data_time > TIMEOUT:
+                break
+
+            time.sleep(0.05)
+
+        print("\n-----------------------------")
+
+        if not response:
+            print("ERROR: No response from U-Boot")
+            sys.exit(1)
+
+        print("Command completed successfully")
+
+except serial.SerialException as e:
+    print(f"Serial error: {e}")
+    sys.exit(1)