xiaoxiang781216 commented on a change in pull request #5256:
URL: https://github.com/apache/incubator-nuttx/pull/5256#discussion_r787666136
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File path: include/nuttx/board.h
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@@ -429,6 +429,23 @@ int board_composite_initialize(int port);
FAR void *board_composite_connect(int port, int configid);
#endif
+/****************************************************************************
+ * Name: board_usbdev_serialstr
+ *
+ * Description:
+ * Use board unique serial number string to iSerialNumber field in the
+ * device descriptor. This is for determining the board when multiple
+ * boards on the same host.
+ *
+ * Returned Value:
+ * The board unique serial number string.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_BOARD_USBDEV_SERIALSTR)
+FAR const char *board_usbdev_serialstr(void);
Review comment:
But should we give a more general name here? It's too bad to couple
serial string to usbdev. I could prefer that:
```
#if defined(CONFIG_BOARD_UNIQUESTR)
FAR const char *board_uniquestr(void);
#endif
```
and provide a defined implementation on top of board_uniqueid if no special
need.
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