From b6739c29d91ae840befd6f461699286d5ee04865 Mon Sep 17 00:00:00 2001
From: Christian Starkjohann <cs+github@obdev.at>
Date: Mon, 3 Aug 2009 15:55:51 +0000
Subject: - added comment how USB port pins must be initialized

---
 usbdrv/usbdrv.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usbdrv/usbdrv.h b/usbdrv/usbdrv.h
index 5b277f9..fd1083e 100644
--- a/usbdrv/usbdrv.h
+++ b/usbdrv/usbdrv.h
@@ -167,7 +167,9 @@ struct usbRequest;  /* forward declaration */
 
 USB_PUBLIC void usbInit(void);
 /* This function must be called before interrupts are enabled and the main
- * loop is entered.
+ * loop is entered. We exepct that the PORT and DDR bits for D+ and D- have
+ * not been changed from their default status (which is 0). If you have changed
+ * them, set both back to 0 (configure them as input with no internal pull-up).
  */
 USB_PUBLIC void usbPoll(void);
 /* This function must be called at regular intervals from the main loop.
-- 
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