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| author | Christian Starkjohann <cs+github@obdev.at> | 2009-08-03 15:55:51 +0000 |
|---|---|---|
| committer | Christian Starkjohann <cs+github@obdev.at> | 2009-08-03 15:55:51 +0000 |
| commit | b6739c29d91ae840befd6f461699286d5ee04865 (patch) | |
| tree | 311da52b26a9c91f32026ab974bc951db3b6c7f9 | |
| parent | c94ddc7e35c7cf8c027e828177cf282ccd56c691 (diff) | |
| download | v-usb-b6739c29d91ae840befd6f461699286d5ee04865.tar.gz v-usb-b6739c29d91ae840befd6f461699286d5ee04865.tar.bz2 v-usb-b6739c29d91ae840befd6f461699286d5ee04865.zip | |
- added comment how USB port pins must be initialized
| -rw-r--r-- | usbdrv/usbdrv.h | 4 |
1 files changed, 3 insertions, 1 deletions
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. |