uhd.h File Reference

Common API for USB Host Drivers (UHD)

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include "usb_protocol.h"

Typedefs
typedef void(*	uhd_callback_reset_t )(void)
	End of reset callback function type. More...
typedef void(*	uhd_callback_setup_end_t )(usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	End of setup callback function type. More...
typedef bool(*	uhd_callback_setup_run_t )(usb_add_t add, uint8_t **payload, uint16_t *payload_size)
	Data setup transfer callback function type. More...
typedef void(*	uhd_callback_trans_t )(usb_add_t add, usb_ep_t ep, uhd_trans_status_t status, iram_size_t nb_transfered)
	End of transfer callback function type. More...

Enumerations
enum	uhd_speed_t {   UHD_SPEED_LOW = 0,   UHD_SPEED_FULL = 1,   UHD_SPEED_HIGH = 2 }
	Device speed. More...
enum	uhd_trans_status_t {   UHD_TRANS_NOERROR = 0,   UHD_TRANS_DISCONNECT,   UHD_TRANS_CRC,   UHD_TRANS_DT_MISMATCH,   UHD_TRANS_STALL,   UHD_TRANS_NOTRESPONDING,   UHD_TRANS_PIDFAILURE,   UHD_TRANS_TIMEOUT,   UHD_TRANS_ABORTED }
	Endpoint transfer status The status field is updated after each transaction attempt, whether successful or not. More...

Functions
void	uhd_disable (bool b_id_stop)
	Disables the USB host mode. More...
void	uhd_enable (void)
	Enables the USB host mode Start the ID pin management if the ID pin is available. More...
uint16_t	uhd_get_frame_number (void)
	Returns the current Start Of Frame (SOF) number. More...
uint16_t	uhd_get_microframe_number (void)
	Returns the current micro start of frame number. More...
uhd_speed_t	uhd_get_speed (void)
	Returns the speed of connected device. More...
bool	uhd_is_suspend (void)
	Test if the suspend state is enabled on the USB line. More...
void	uhd_resume (void)
	Enables the IDLE state on the USB line. More...
void	uhd_send_reset (uhd_callback_reset_t callback)
	Enables the Reset state on the USB line. More...
bool	uhd_setup_request (usb_add_t add, usb_setup_req_t *req, uint8_t *payload, uint16_t payload_size, uhd_callback_setup_run_t callback_run, uhd_callback_setup_end_t callback_end)
	Add a setup request in the control endpoint setup queue. More...
void	uhd_suspend (void)
	Enables the suspend state on the USB line. More...
Endpoint Management
The following functions allow drivers to create and remove endpoints, as well as set, clear and query their "halted" and "wedged" states.
bool	uhd_ep0_alloc (usb_add_t add, uint8_t ep_size)
	Configures and enables a control endpoint 0. More...
bool	uhd_ep_alloc (usb_add_t add, usb_ep_desc_t *ep_desc, uhd_speed_t speed)
	Configures and enables an endpoint. More...
void	uhd_ep_free (usb_add_t add, usb_ep_t endp)
	Disables an endpoint or all endpoint of a device. More...
bool	uhd_ep_run (usb_add_t add, usb_ep_t endp, bool b_shortpacket, uint8_t *buf, iram_size_t buf_size, uint16_t timeout, uhd_callback_trans_t callback)
	Allows to receive or send data on an endpoint. More...
void	uhd_ep_abort (usb_add_t add, usb_ep_t endp)
	Aborts an on-going transfer on an endpoint. More...
High speed test mode management
The following functions allow the host to jump to a specific test mode required in high speed mode.
void	uhd_test_mode_j (void)
void	uhd_test_mode_k (void)
void	uhd_test_mode_se0_nak (void)
void	uhd_test_mode_packet (void)
UHC callbacks to provide for UHD
The following callbacks are used by UHD.
void	uhc_start (void)
	Starts the host mode. More...
void	uhc_stop (bool b_id_stop)
	Stops the host mode. More...
void	uhc_notify_connection (bool b_plug)
	Notify device connection or disconnection. More...
void	uhc_notify_sof (bool b_micro)
	Notify each start of frame sent by driver. More...
void	uhc_notify_resume (void)
	Notify that a resume bus occurs A resume can occur after a downstream or an upstream resume. More...