/*
LUFA Library
- Copyright (C) Dean Camera, 2010.
+ Copyright (C) Dean Camera, 2011.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
#if (!defined(FIXED_CONTROL_ENDPOINT_SIZE) || defined(__DOXYGEN__))
/** Default size of the default control endpoint's bank, until altered by the control endpoint bank size
- * value in the device descriptor. Not available if the FIXED_CONTROL_ENDPOINT_SIZE token is defined.
+ * value in the device descriptor. Not available if the \c FIXED_CONTROL_ENDPOINT_SIZE token is defined.
*/
#define ENDPOINT_CONTROLEP_DEFAULT_SIZE 8
#endif
#define ENDPOINT_EPNUM_MASK 0x07
/** Endpoint direction mask, for masking against endpoint addresses to retrieve the endpoint's
- * direction for comparing with the ENDPOINT_DESCRIPTOR_DIR_* masks.
+ * direction for comparing with the \c ENDPOINT_DESCRIPTOR_DIR_* masks.
*/
#define ENDPOINT_EPDIR_MASK 0x80
*/
#define ENDPOINT_EPSIZE_MASK 0x7F
- /** Maximum size in bytes of a given endpoint.
+ /** Retrives the maximum bank size in bytes of a given endpoint.
*
- * \param[in] EPIndex Endpoint number, a value between 0 and (ENDPOINT_TOTAL_ENDPOINTS - 1)
+ * \note This macro will only work correctly on endpoint indexes that are compile-time constants
+ * defined by the preprocessor.
+ *
+ * \param[in] EPIndex Endpoint number, a value between 0 and (\ref ENDPOINT_TOTAL_ENDPOINTS - 1)
*/
#define ENDPOINT_MAX_SIZE(EPIndex) _ENDPOINT_GET_MAXSIZE(EPIndex)
- /** Indicates the total number of banks supported by the given endpoint.
+ /** Retrieves the total number of banks supported by the given endpoint.
+ *
+ * \note This macro will only work correctly on endpoint indexes that are compile-time constants
+ * defined by the preprocessor.
*
- * \param[in] EPIndex Endpoint number, a value between 0 and (ENDPOINT_TOTAL_ENDPOINTS - 1)
+ * \param[in] EPIndex Endpoint number, a value between 0 and (\ref ENDPOINT_TOTAL_ENDPOINTS - 1)
*/
#define ENDPOINT_BANKS_SUPPORTED(EPIndex) _ENDPOINT_GET_BANKS(EPIndex)
* \param[in] Number Endpoint number to configure. This must be more than 0 and less than
* \ref ENDPOINT_TOTAL_ENDPOINTS.
*
- * \param[in] Type Type of endpoint to configure, a EP_TYPE_* mask. Not all endpoint types
+ * \param[in] Type Type of endpoint to configure, a \c EP_TYPE_* mask. Not all endpoint types
* are available on Low Speed USB devices - refer to the USB 2.0 specification.
*
* \param[in] Direction Endpoint data direction, either \ref ENDPOINT_DIR_OUT or \ref ENDPOINT_DIR_IN.
* the endpoint's data direction). The bank size must indicate the maximum packet size
* that the endpoint can handle.
*
- * \param[in] Banks Number of banks to use for the endpoint being configured, an ENDPOINT_BANK_* mask.
+ * \param[in] Banks Number of banks to use for the endpoint being configured, an \c ENDPOINT_BANK_* mask.
* More banks uses more USB DPRAM, but offers better performance. Isochronous type
* endpoints <b>must</b> have at least two banks.
*
- * \note Endpoints <b>must</b> be configured in ascending order, or bank corruption will occur.
+ * \note When the \c ORDERED_EP_CONFIG compile time option is used, Endpoints <b>must</b> be configured in
+ * ascending order, or bank corruption will occur.
* \n\n
*
* \note Certain models of USB AVR's endpoints may have different maximum packet sizes based on the endpoint's
* \note This routine will automatically select the specified endpoint upon success. Upon failure, the endpoint
* which failed to reconfigure correctly will be selected.
*
- * \return Boolean true if the configuration succeeded, false otherwise.
+ * \return Boolean \c true if the configuration succeeded, \c false otherwise.
*/
static inline bool Endpoint_ConfigureEndpoint(const uint8_t Number,
const uint8_t Type,
}
/** Resets the endpoint bank FIFO. This clears all the endpoint banks and resets the USB controller's
- * In and Out pointers to the bank's contents.
+ * data In and Out pointers to the bank's contents.
*
* \param[in] EndpointNumber Endpoint number whose FIFO buffers are to be reset.
*/
/** Determines if the currently selected endpoint is enabled, but not necessarily configured.
*
- * \return Boolean True if the currently selected endpoint is enabled, false otherwise.
+ * \return Boolean \c true if the currently selected endpoint is enabled, \c false otherwise.
*/
static inline bool Endpoint_IsEnabled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_IsEnabled(void)
return ((UECONX & (1 << EPEN)) ? true : false);
}
+ /** Aborts all pending IN transactions on the currently selected endpoint, once the bank
+ * has been queued for transmission to the host via \ref Endpoint_ClearIN(). This function
+ * will terminate all queued transactions, resetting the endpoint banks ready for a new
+ * packet.
+ *
+ * \ingroup Group_EndpointPacketManagement
+ */
+ static inline void Endpoint_AbortPendingIN(void)
+ {
+ while (UESTA0X & (0x03 << NBUSYBK0))
+ {
+ UEINTX |= (1 << RXOUTI);
+ while (UEINTX & (1 << RXOUTI));
+ }
+ }
+
+ /** Retrieves the number of busy banks in the currently selected endpoint, which have been queued for
+ * transmission via the \ref Endpoint_ClearIN() command, or are awaiting acknowledgement via the
+ * \ref Endpoint_ClearOUT() command.
+ *
+ * \ingroup Group_EndpointPacketManagement
+ *
+ * \return Total number of busy banks in the selected endpoint.
+ */
+ static inline uint8_t Endpoint_GetBusyBanks(void)
+ {
+ return (UESTA0X & (0x03 << NBUSYBK0));
+ }
+
/** Determines if the currently selected endpoint may be read from (if data is waiting in the endpoint
* bank and the endpoint is an OUT direction, or if the bank is not yet full if the endpoint is an IN
* direction). This function will return false if an error has occurred in the endpoint, if the endpoint
*
* \ingroup Group_EndpointPacketManagement
*
- * \return Boolean true if the currently selected endpoint may be read from or written to, depending on its direction.
+ * \return Boolean \c true if the currently selected endpoint may be read from or written to, depending
+ * on its direction.
*/
static inline bool Endpoint_IsReadWriteAllowed(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_IsReadWriteAllowed(void)
/** Determines if the currently selected endpoint is configured.
*
- * \return Boolean true if the currently selected endpoint has been configured, false otherwise.
+ * \return Boolean \c true if the currently selected endpoint has been configured, \c false otherwise.
*/
static inline bool Endpoint_IsConfigured(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_IsConfigured(void)
/** Returns a mask indicating which INTERRUPT type endpoints have interrupted - i.e. their
* interrupt duration has elapsed. Which endpoints have interrupted can be determined by
- * masking the return value against (1 << {Endpoint Number}).
+ * masking the return value against <tt>(1 << <i>{Endpoint Number}</i>)</tt>.
*
* \return Mask whose bits indicate which endpoints have interrupted.
*/
*
* \param[in] EndpointNumber Index of the endpoint whose interrupt flag should be tested.
*
- * \return Boolean true if the specified endpoint has interrupted, false otherwise.
+ * \return Boolean \c true if the specified endpoint has interrupted, \c false otherwise.
*/
static inline bool Endpoint_HasEndpointInterrupted(const uint8_t EndpointNumber) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_HasEndpointInterrupted(const uint8_t EndpointNumber)
*
* \ingroup Group_EndpointPacketManagement
*
- * \return Boolean true if the current endpoint is ready for an IN packet, false otherwise.
+ * \return Boolean \c true if the current endpoint is ready for an IN packet, \c false otherwise.
*/
static inline bool Endpoint_IsINReady(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_IsINReady(void)
*
* \ingroup Group_EndpointPacketManagement
*
- * \return Boolean true if current endpoint is has received an OUT packet, false otherwise.
+ * \return Boolean \c true if current endpoint is has received an OUT packet, \c false otherwise.
*/
static inline bool Endpoint_IsOUTReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_IsOUTReceived(void)
*
* \ingroup Group_EndpointPacketManagement
*
- * \return Boolean true if the selected endpoint has received a SETUP packet, false otherwise.
+ * \return Boolean \c true if the selected endpoint has received a SETUP packet, \c false otherwise.
*/
static inline bool Endpoint_IsSETUPReceived(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_IsSETUPReceived(void)
*
* \ingroup Group_EndpointPacketManagement
*
- * \return Boolean true if the currently selected endpoint is stalled, false otherwise.
+ * \return Boolean \c true if the currently selected endpoint is stalled, \c false otherwise.
*/
static inline bool Endpoint_IsStalled(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline bool Endpoint_IsStalled(void)
/** Determines the currently selected endpoint's direction.
*
- * \return The currently selected endpoint's direction, as a ENDPOINT_DIR_* mask.
+ * \return The currently selected endpoint's direction, as a \c ENDPOINT_DIR_* mask.
*/
static inline uint8_t Endpoint_GetEndpointDirection(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;
static inline uint8_t Endpoint_GetEndpointDirection(void)
/** Sets the direction of the currently selected endpoint.
*
- * \param[in] DirectionMask New endpoint direction, as a ENDPOINT_DIR_* mask.
+ * \param[in] DirectionMask New endpoint direction, as a \c ENDPOINT_DIR_* mask.
*/
static inline void Endpoint_SetEndpointDirection(const uint8_t DirectionMask) ATTR_ALWAYS_INLINE;
static inline void Endpoint_SetEndpointDirection(const uint8_t DirectionMask)
* project once the USB interface is initialized into device mode.
*
* If space is an issue, it is possible to fix this to a static value by defining the control
- * endpoint size in the FIXED_CONTROL_ENDPOINT_SIZE token passed to the compiler in the makefile
+ * endpoint size in the \c FIXED_CONTROL_ENDPOINT_SIZE token passed to the compiler in the makefile
* via the -D switch. When a fixed control endpoint size is used, the size is no longer dynamically
* read from the descriptors at runtime and instead fixed to the given value. When used, it is
* important that the descriptor control endpoint size value matches the size given as the
- * FIXED_CONTROL_ENDPOINT_SIZE token - it is recommended that the FIXED_CONTROL_ENDPOINT_SIZE token
- * be used in the descriptors to ensure this.
+ * \c FIXED_CONTROL_ENDPOINT_SIZE token - it is recommended that the \c FIXED_CONTROL_ENDPOINT_SIZE token
+ * be used in the device descriptors to ensure this.
*
* \note This variable should be treated as read-only in the user application, and never manually
* changed in value.
projects / pub / USBasp.git / blobdiff