QR decoding works on unix desktop target

draft_code/qrdecode.py

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+import qrdecode
+
+
+# Image dimensions
+width = 240
+height = 240
+buffer_size = width * height  # 240 * 240 = 57600 bytes
+try:
+    # Allocate buffer for grayscale image
+    buffer = bytearray(buffer_size)
+    # Read the raw grayscale image file
+    with open('qrcode2.raw', 'rb') as f:
+        bytes_read = f.readinto(buffer)
+        if bytes_read != buffer_size:
+            raise ValueError("File size does not match expected 240x240 grayscale image")
+    # Decode QR code using qrdecode module
+    print("decoding...")
+    result = qrdecode.qrdecode(buffer, width, height)
+    print(f"result: {result}")
+    # Remove BOM (\ufeff) from the start of the decoded string, if present
+    if result.startswith('\ufeff'):
+        result = result[1:]
+    print(f"result: {result}")
+except OSError as e:
+    print("Error reading file:", e)
+    raise
+except ValueError as e:
+    print("Error:", e)
+    raise