diff options
Diffstat (limited to 'LUFA/Drivers')
| -rw-r--r-- | LUFA/Drivers/USB/HighLevel/Events.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/LUFA/Drivers/USB/HighLevel/Events.h b/LUFA/Drivers/USB/HighLevel/Events.h index 9b60a957b..5a007ff2a 100644 --- a/LUFA/Drivers/USB/HighLevel/Events.h +++ b/LUFA/Drivers/USB/HighLevel/Events.h @@ -148,13 +148,16 @@ /** Event for USB device connection. This event fires when the AVR in device mode and the device is connected
* to a host, beginning the enumeration process, measured by a rising level on the AVR's VBUS pin.
*
- * \note For the smaller USB AVRs (AT90USBXX2) with limited USB controllers, VBUS is not available to the USB controller.
+ * \note For the smaller series 2 USB AVRs with limited USB controllers, VBUS is not available to the USB controller.
* this means that the current connection state is derived from the bus suspension and wake up events by default,
* which is not always accurate (host may suspend the bus while still connected). If the actual connection state
* needs to be determined, VBUS should be routed to an external pin, and the auto-detect behaviour turned off by
* passing the NO_LIMITED_CONTROLLER_CONNECT token to the compiler via the -D switch at compile time. The connection
* and disconnection events may be manually fired, and the \ref USB_DeviceState global changed manually.
*
+ * \note This event may fire multiple times during device enumeration on the series 2 USB AVRs with limited USB controllers
+ * if NO_LIMITED_CONTROLLER_CONNECT is not defined.
+ *
* \see USBTask.h for more information on the USB management task and reducing CPU usage.
*/
void EVENT_USB_Device_Connect(void);
@@ -162,13 +165,16 @@ /** Event for USB device disconnection. This event fires when the AVR in device mode and the device is disconnected
* from a host, measured by a falling level on the AVR's VBUS pin.
*
- * \note For the smaller USB AVRs (AT90USBXX2) with limited USB controllers, VBUS is not available to the USB controller.
+ * \note For the smaller series 2 USB AVRs with limited USB controllers, VBUS is not available to the USB controller.
* this means that the current connection state is derived from the bus suspension and wake up events by default,
* which is not always accurate (host may suspend the bus while still connected). If the actual connection state
* needs to be determined, VBUS should be routed to an external pin, and the auto-detect behaviour turned off by
* passing the NO_LIMITED_CONTROLLER_CONNECT token to the compiler via the -D switch at compile time. The connection
* and disconnection events may be manually fired, and the \ref USB_DeviceState global changed manually.
*
+ * \note This event may fire multiple times during device enumeration on the series 2 USB AVRs with limited USB controllers
+ * if NO_LIMITED_CONTROLLER_CONNECT is not defined.
+ *
* \see USBTask.h for more information on the USB management task and reducing CPU usage.
*/
void EVENT_USB_Device_Disconnect(void);
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