Endpoint management

USB endpoint configuration and status reporting. More...

Data Structures
struct	ep_config_t
	Endpoint configuration struct. More...

Endpoint configuration
enum	ep_type_t { EP_TYPE_CONTROL = 0, EP_TYPE_BULK = 2, EP_TYPE_INTERRUPT = 3, EP_TYPE_ISOCHRONOUS = 1 }
	List of endpoint types. More...
enum	ep_direction_t { EP_DIRECTION_OUT = (1 << 0), EP_DIRECTION_IN = (1 << 1), EP_DIRECTION_BIDIR = EP_DIRECTION_IN | EP_DIRECTION_OUT }
	Endpoint directions. More...
bool	endpoint_configure (const struct ep_config_t *config)
	Initialise the USB endpoint described by config. More...
void	endpoint_init_default (const uint8_t ep_num)
	Default endpoint initialisation function.
void	endpoint_deconfigure (const uint8_t ep_num)
	Releases hardware and memory associated with the endpoint memory.
uint16_t	endpoint_get_size (const uint8_t ep_num)
	Return the maximum endpoint packet size.

Endpoint stall
bool	endpoint_stall (const uint8_t ep_num)
	Stall an endpoint.
bool	endpoint_clear_stall (const uint8_t ep_num)
	Clear an endpoint stall.
bool	endpoint_is_stalled (const uint8_t ep_num)
	Get endpoint stall status.

Endpoint DATAx toggle
void	endpoint_reset_data_toggle (const uint8_t ep_num)
	Reset the DATAx toggle to DATA0.

Detailed Description

USB endpoint configuration and status reporting.

Enumeration Type Documentation

ep_direction_t

enum ep_direction_t

Endpoint directions.

Enumerator
EP_DIRECTION_OUT	OUT endpoint, for data from host to device.
EP_DIRECTION_IN	IN endpoint, for data from device to host.
EP_DIRECTION_BIDIR	Bidirectional endpoint.

ep_type_t

enum ep_type_t

List of endpoint types.

Values of these constants corresponds to the bit values used in the USB endpoint descriptors. See Table 9-13 of the USB 2.0 standard.

Enumerator
EP_TYPE_CONTROL	Control endpoint.
EP_TYPE_BULK	Bulk endpoint.
EP_TYPE_INTERRUPT	Interrupt endoint.
EP_TYPE_ISOCHRONOUS	Isochronous endpoint.

Function Documentation

endpoint_configure()

bool endpoint_configure

(

const struct ep_config_t *

config

)

Initialise the USB endpoint described by config.

This will allocate the hardware and memory as described by the microcontroller's manual and enable the required interrupts.

Note

Not all platforms support random endpoint allocation, so endpoints should be allocated starting from endpoint 0 up to the last endpoint. Failing to do so may result in endpoint memory corruption.

Returns

true if the endpoint configuration was succesful, false otherwise.