forked from mfulz_github/qmk_firmware
Better documentation for the Endpoint_ConfigureEndpoint() and Pipe_ConfigurePipe() functions.
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Dean Camera
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@ -100,7 +100,7 @@
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* issued if the host is currently allowing remote wakeup events from the device (i.e.,
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* the \ref USB_RemoteWakeupEnabled flag is set). When the NO_DEVICE_REMOTE_WAKEUP compile
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* time option is used, this macro is unavailable.
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* \n
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* \n\n
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*
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* \note The USB clock must be running for this function to operate. If the stack is initialized with
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* the \ref USB_OPT_MANUAL_PLL option enabled, the user must ensure that the PLL is running
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@ -245,25 +245,38 @@
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/* Inline Functions: */
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/** Configures the specified endpoint number with the given endpoint type, direction, bank size
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* and banking mode. Endpoints should be allocated in ascending order by their address in the
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* device (i.e. endpoint 1 should be configured before endpoint 2 and so on) to prevent fragmentation
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* of the USB FIFO memory.
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* and banking mode. Once configured, the endpoint may be read from or written to, depending
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* on its direction.
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*
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* The endpoint type may be one of the EP_TYPE_* macros listed in LowLevel.h and the direction
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* may be either \ref ENDPOINT_DIR_OUT or \ref ENDPOINT_DIR_IN.
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* \param[in] Number Endpoint number to configure. This must be more than 0 and less than
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* \ref ENDPOINT_TOTAL_ENDPOINTS.
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*
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* The bank size must indicate the maximum packet size that the endpoint can handle. Different
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* endpoint numbers can handle different maximum packet sizes - refer to the chosen USB AVR's
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* datasheet to determine the maximum bank size for each endpoint.
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* \param[in] Type Type of endpoint to configure, a EP_TYPE_* mask. Not all endpoint types
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* are available on Low Speed USB devices - refer to the USB 2.0 specification.
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*
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* The banking mode may be either \ref ENDPOINT_BANK_SINGLE or \ref ENDPOINT_BANK_DOUBLE.
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* \param[in] Direction Endpoint data direction, either \ref ENDPOINT_DIR_OUT or \ref ENDPOINT_DIR_IN.
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* All endpoints (except Control type) are unidirectional - data may only be read
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* from or written to the endpoint bank based on its direction, not both.
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*
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* \param[in] Size Size of the endpoint's bank, where packets are stored before they are transmitted
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* to the USB host, or after they have been received from the USB host (depending on
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* the endpoint's data direction). The bank size must indicate the maximum packet size
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* that the endpoint can handle.
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*
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* \param[in] Banks Number of banks to use for the endpoint being configured, an ENDPOINT_BANK_* mask.
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* More banks uses more USB DPRAM, but offers better performance. Isochronous type
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* endpoints <b>must</b> have at least two banks.
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*
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* \note Certain models of USB AVR's endpoints may have different maximum packet sizes based on the endpoint's
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* index - refer to the chosen USB AVR's datasheet to determine the maximum bank size for each endpoint.
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* \n\n
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*
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* \note The default control endpoint should not be manually configured by the user application, as
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* it is automatically configured by the library internally.
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* \n\n
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*
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* \note This routine will select the specified endpoint, and the endpoint will remain selected
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* once the routine completes regardless of if the endpoint configuration succeeds.
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* \note This routine will automatically select the specified endpoint upon success. Upon failure, the endpoint
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* which failed to reconfigure correctly will be selected.
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*
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* \return Boolean true if the configuration succeeded, false otherwise.
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*/
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@ -811,18 +811,7 @@
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/* Function Prototypes: */
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/** Configures the specified pipe number with the given pipe type, token, target endpoint number in the
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* attached device, bank size and banking mode. Pipes should be allocated in ascending order by their
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* address in the device (i.e. pipe 1 should be configured before pipe 2 and so on) to prevent fragmentation
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* of the USB FIFO memory.
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*
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* The pipe type may be one of the EP_TYPE_* macros listed in LowLevel.h, the token may be one of the
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* PIPE_TOKEN_* masks.
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*
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* The bank size must indicate the maximum packet size that the pipe can handle. Different pipe
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* numbers can handle different maximum packet sizes - refer to the chosen USB AVR's datasheet to
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* determine the maximum bank size for each pipe.
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*
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* The banking mode may be either \ref PIPE_BANK_SINGLE or \ref PIPE_BANK_DOUBLE.
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* attached device, bank size and banking mode.
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*
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* A newly configured pipe is frozen by default, and must be unfrozen before use via the \ref Pipe_Unfreeze()
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* before being used. Pipes should be kept frozen unless waiting for data from a device while in IN mode, or
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@ -830,14 +819,38 @@
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* numbers of IN requests without automatic freezing - this can be overridden by a call to
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* \ref Pipe_SetFiniteINRequests().
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*
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* \note The default control pipe should not be manually configured by the user application, as it
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* is automatically configured by the library internally.
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* \param[in] Number Pipe number to configure. This must be more than 0 and less than \ref PIPE_TOTAL_PIPES.
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*
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* \param[in] Type Type of pipe to configure, a EP_TYPE_* mask. Not all pipe types are available on Low
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* Speed USB devices - refer to the USB 2.0 specification.
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*
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* \param[in] Token Pipe data token, either \ref PIPE_TOKEN_SETUP, \ref PIPE_TOKEN_OUT or \ref PIPE_TOKEN_IN.
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* All pipes (except Control type) are unidirectional - data may only be read from or
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* written to the pipe bank based on its direction, not both.
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*
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* \param[in] EndpointNumber Endpoint index within the attached device that the pipe should interface to.
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*
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* \param[in] Size Size of the pipe's bank, where packets are stored before they are transmitted to
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* the USB device, or after they have been received from the USB device (depending on
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* the pipe's data direction). The bank size must indicate the maximum packet size that
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* the pipe can handle.
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*
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* \param[in] Banks Number of banks to use for the pipe being configured, a PIPE_BANK_* mask. More banks
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* uses more USB DPRAM, but offers better performance. Isochronous type pipes <b>must</b>
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* have at least two banks.
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*
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* \note Certain models of USB AVR's pipes may have different maximum packet sizes based on the pipe's
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* index - refer to the chosen USB AVR's datasheet to determine the maximum bank size for each pipe.
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* \n\n
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*
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* \note This routine will select the specified pipe, and the pipe will remain selected once the
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* routine completes regardless of if the pipe configuration succeeds.
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* \note The default control pipe should not be manually configured by the user application, as it is
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* automatically configured by the library internally.
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* \n\n
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*
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* \return Boolean true if the configuration is successful, false otherwise.
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* \note This routine will automatically select the specified pipe upon success. Upon failure, the pipe which
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* failed to reconfigure correctly will be selected.
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*
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* \return Boolean true if the configuration succeeded, false otherwise.
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*/
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bool Pipe_ConfigurePipe(const uint8_t Number,
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const uint8_t Type,
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