Implementation of UHC

Internal implementation.

Functions
static void	uhc_remotewakeup (bool b_enable)
	Enables or disables the remote wakeup feature of all devices connected. More...
static void	uhc_setup_request_callback (usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	Callback used to signal the end of a setup request. More...

Internal variables to manage the USB host stack
typedef void(*	uhc_sof_timeout_callback_t )(void)
	Type of callback on a SOF timeout. More...
static uhc_device_t	g_uhc_device_root
	Entry point of all devices connected on USB tree. More...
static uint8_t	uhc_enum_try
	Number of enumeration try. More...
static uhc_sof_timeout_callback_t	uhc_sof_timeout_callback
	Callback currently registered on a SOF timeout. More...
uint8_t	uhc_sof_timeout
	Number of SOF remaining before call uhc_sof_timeout_callback callback. More...
static uhi_api_t	uhc_uhis [] = {USB_HOST_UHI}
	Array of all UHI available. More...
static volatile bool	uhc_setup_request_finish
	Volatile flag to pool the end of Get USB string setup request. More...
static volatile bool	uhc_setup_request_finish_status
	Volatile flag to know the status of Get USB string setup request. More...
#define	UHC_ENUM_NB_TRY   4
	Maximum try to enumerate a device. More...
#define	UHC_USB_ADD_NOT_VALID   0xFF
	Entry point of all devices connected on USB tree. More...
#define	UHC_DEVICE_ENUM_ADD   1
	USB address of the USB device under enumeration process. More...
#define	uhc_dev_enum   (&g_uhc_device_root)
	Device under enumeration process. More...
#define	uhc_power_running   0
	Total power of the devices connected. More...
#define	UHC_NB_UHI   (sizeof(uhc_uhis)/sizeof(uhc_uhis[0]))
	Number of UHI available. More...

Internal functions to manage the USB device enumeration
static void	uhc_enable_timeout_callback (uint8_t timeout, uhc_sof_timeout_callback_t callback)
	Enable a internal timeout on SOF events. More...
static void	uhc_enumeration_suspend (void)
	Enters a specific device in USB suspend mode Suspend the USB line or a port on USB hub. More...
static void	uhc_enumeration_reset (uhd_callback_reset_t callback)
	Sends the USB Reset signal on the USB line of a device. More...
static void	uhc_connection_tree (bool b_plug, uhc_device_t *dev)
	Manage a device plug or unplug on the USB tree. More...
static void	uhc_enumeration_step1 (void)
	Device enumeration step 1 Reset USB line. More...
static void	uhc_enumeration_step2 (void)
	Device enumeration step 2 Lets USB line in IDLE state during 20ms. More...
static void	uhc_enumeration_step3 (void)
	Device enumeration step 3 Reset USB line. More...
static void	uhc_enumeration_step4 (void)
	Device enumeration step 4 Lets USB line in IDLE state during 100ms. More...
static void	uhc_enumeration_step5 (void)
	Device enumeration step 5 Requests the USB device descriptor. More...
static void	uhc_enumeration_step6 (usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	Device enumeration step 6 End of Get device descriptor request. More...
static void	uhc_enumeration_step7 (void)
	Device enumeration step 7 Reset USB line. More...
static void	uhc_enumeration_step8 (void)
	Device enumeration step 8 Lets USB line in IDLE state during 100ms. More...
static void	uhc_enumeration_step9 (void)
	Device enumeration step 9 Send a Set address setup request. More...
static void	uhc_enumeration_step10 (usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	Device enumeration step 10 End of Set address request. More...
static void	uhc_enumeration_step11 (void)
	Device enumeration step 11 Updates USB host pipe with the new USB address. More...
static void	uhc_enumeration_step12 (usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	Device enumeration step 12 Requests the first USB structure of the USB configuration descriptor. More...
static void	uhc_enumeration_step13 (usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	Device enumeration step 13 Requests a complete Get configuration descriptor. More...
static void	uhc_enumeration_step14 (usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	Device enumeration step 14 Enable USB configuration, if unless one USB interface is supported by UHIs. More...
static void	uhc_enumeration_step15 (usb_add_t add, uhd_trans_status_t status, uint16_t payload_trans)
	Device enumeration step 15 Enables UHI interfaces. More...
static void	uhc_enumeration_error (uhc_enum_status_t status)
	Manage error during device enumeration. More...

Callbacks used by USB Host Driver (UHD) to notify events
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...

Functions to control the USB host stack
void	uhc_start (void)
	Starts the host mode. More...
void	uhc_stop (bool b_id_stop)
	Stops the host mode. More...
void	uhc_suspend (bool b_remotewakeup)
bool	uhc_is_suspend (void)
void	uhc_resume (void)

User functions to manage the devices
uint8_t	uhc_get_device_number (void)
char *	uhc_dev_get_string_manufacturer (uhc_device_t *dev)
char *	uhc_dev_get_string_product (uhc_device_t *dev)
char *	uhc_dev_get_string_serial (uhc_device_t *dev)
char *	uhc_dev_get_string (uhc_device_t *dev, uint8_t str_id)
uint16_t	uhc_dev_get_power (uhc_device_t *dev)
uhd_speed_t	uhc_dev_get_speed (uhc_device_t *dev)
bool	uhc_dev_is_high_speed_support (uhc_device_t *dev)
void	uhc_dev_reset (uhc_device_t *dev)

#define uhc_dev_enum   (&g_uhc_device_root)

Device under enumeration process.

Referenced by uhc_connection_tree(), uhc_dev_reset(), uhc_enumeration_error(), uhc_enumeration_reset(), uhc_enumeration_step11(), uhc_enumeration_step12(), uhc_enumeration_step13(), uhc_enumeration_step14(), uhc_enumeration_step15(), uhc_enumeration_step4(), uhc_enumeration_step5(), uhc_enumeration_step6(), uhc_enumeration_step9(), and uhc_enumeration_suspend().

#define UHC_DEVICE_ENUM_ADD   1

USB address of the USB device under enumeration process.

Referenced by uhc_enumeration_step11(), uhc_enumeration_step12(), uhc_enumeration_step13(), uhc_enumeration_step14(), and uhc_enumeration_step9().

#define UHC_ENUM_NB_TRY   4

Maximum try to enumerate a device.

Referenced by uhc_enumeration_error().

#define UHC_NB_UHI   (sizeof(uhc_uhis)/sizeof(uhc_uhis[0]))

Number of UHI available.

Referenced by uhc_connection_tree(), uhc_dev_reset(), uhc_enumeration_step14(), uhc_enumeration_step15(), and uhc_notify_sof().

#define uhc_power_running   0

Total power of the devices connected.

Referenced by uhc_connection_tree(), uhc_enumeration_step13(), and uhc_notify_connection().

#define UHC_USB_ADD_NOT_VALID   0xFF

Entry point of all devices connected on USB tree.

Referenced by uhc_connection_tree(), uhc_get_device_number(), uhc_is_suspend(), uhc_notify_connection(), and uhc_start().

typedef void(* uhc_sof_timeout_callback_t)(void)

Type of callback on a SOF timeout.

static void uhc_connection_tree ( bool  b_plug, uhc_device_t *  dev  )

static

Manage a device plug or unplug on the USB tree.

Parameters

b_plug	true, if it is a device connection
dev	Information about device connected or disconnected

References g_uhc_device_root, UHC_CONNECTION_EVENT, uhc_dev_enum, uhc_enum_try, uhc_enumeration_step1(), UHC_NB_UHI, uhc_power_running, uhc_sof_timeout, UHC_USB_ADD_NOT_VALID, uhd_ep_free(), and uhi_api_t::uninstall.

Referenced by uhc_notify_connection().

uint16_t uhc_dev_get_power

(

uhc_device_t *

dev

)

uhd_speed_t uhc_dev_get_speed

(

uhc_device_t *

dev

)

char* uhc_dev_get_string	(	uhc_device_t *	dev,
		uint8_t	str_id
	)

References usb_str_desc_t::bLength, usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, le16_to_cpu, usb_str_lgid_desc_t::string, uhc_setup_request_callback(), uhc_setup_request_finish, uhc_setup_request_finish_status, uhd_setup_request(), UNUSED, USB_DT_STRING, USB_REQ_DIR_IN, USB_REQ_GET_DESCRIPTOR, USB_REQ_RECIP_DEVICE, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_dev_get_string_manufacturer(), uhc_dev_get_string_product(), and uhc_dev_get_string_serial().

char* uhc_dev_get_string_manufacturer

(

uhc_device_t *

dev

)

References uhc_dev_get_string().

char* uhc_dev_get_string_product

(

uhc_device_t *

dev

)

References uhc_dev_get_string().

char* uhc_dev_get_string_serial

(

uhc_device_t *

dev

)

References uhc_dev_get_string().

bool uhc_dev_is_high_speed_support

(

uhc_device_t *

dev

)

References usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, uhc_setup_request_callback(), uhc_setup_request_finish, uhc_setup_request_finish_status, uhd_setup_request(), UHD_SPEED_FULL, UHD_SPEED_HIGH, USB_DT_DEVICE_QUALIFIER, USB_REQ_DIR_IN, USB_REQ_GET_DESCRIPTOR, USB_REQ_RECIP_DEVICE, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

void uhc_dev_reset

(

uhc_device_t *

dev

)

References uhc_dev_enum, uhc_enum_try, uhc_enumeration_step3(), UHC_NB_UHI, and uhi_api_t::uninstall.

static void uhc_enable_timeout_callback ( uint8_t  timeout, uhc_sof_timeout_callback_t  callback  )

static

Enable a internal timeout on SOF events.

Parameters

timeout	value of timeout (ms)
callback	Callback to call at the end of timeout

References uhc_sof_timeout, and uhc_sof_timeout_callback.

Referenced by uhc_enumeration_step10(), uhc_enumeration_step2(), uhc_enumeration_step4(), uhc_enumeration_step6(), and uhc_enumeration_step8().

static void uhc_enumeration_error ( uhc_enum_status_t  status )

static

Manage error during device enumeration.

Parameters

status

Enumeration error occurred

References uhc_dev_enum, UHC_ENUM_EVENT, UHC_ENUM_NB_TRY, uhc_enum_try, uhc_enumeration_step1(), uhc_enumeration_suspend(), and uhd_ep_free().

Referenced by uhc_enumeration_step10(), uhc_enumeration_step11(), uhc_enumeration_step12(), uhc_enumeration_step13(), uhc_enumeration_step14(), uhc_enumeration_step15(), uhc_enumeration_step5(), uhc_enumeration_step6(), and uhc_enumeration_step9().

static void uhc_enumeration_reset ( uhd_callback_reset_t  callback )

static

Sends the USB Reset signal on the USB line of a device.

Parameters

callback

Callback to call at the end of Reset signal

References g_uhc_device_root, uhc_dev_enum, and uhd_send_reset().

Referenced by uhc_enumeration_step1(), uhc_enumeration_step3(), and uhc_enumeration_step7().

static void uhc_enumeration_step1 ( void  )

static

Device enumeration step 1 Reset USB line.

References uhc_enumeration_reset(), and uhc_enumeration_step2().

Referenced by uhc_connection_tree(), and uhc_enumeration_error().

static void uhc_enumeration_step10 ( usb_add_t  add, uhd_trans_status_t  status, uint16_t  payload_trans  )

static

Device enumeration step 10 End of Set address request.

Lets USB line in IDLE state during 20ms.

Parameters

add	USB address of the setup request
status	Transfer status
payload_trans	Number of data transfered during DATA phase

References uhc_enable_timeout_callback(), uhc_enumeration_error(), uhc_enumeration_step11(), UHD_TRANS_DISCONNECT, UHD_TRANS_NOERROR, and UNUSED.

Referenced by uhc_enumeration_step9().

static void uhc_enumeration_step11 ( void  )

static

Device enumeration step 11 Updates USB host pipe with the new USB address.

Requests a complete USB device descriptor.

References usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, uhc_dev_enum, UHC_DEVICE_ENUM_ADD, uhc_enumeration_error(), uhc_enumeration_step12(), uhd_ep0_alloc(), uhd_ep_free(), uhd_setup_request(), USB_DT_DEVICE, USB_REQ_DIR_IN, USB_REQ_GET_DESCRIPTOR, USB_REQ_RECIP_DEVICE, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_enumeration_step10().

static void uhc_enumeration_step12 ( usb_add_t  add, uhd_trans_status_t  status, uint16_t  payload_trans  )

static

Device enumeration step 12 Requests the first USB structure of the USB configuration descriptor.

Parameters

add	USB address of the setup request
status	Transfer status
payload_trans	Number of data transfered during DATA phase

References Assert, usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, uhc_dev_enum, UHC_DEVICE_CONF, UHC_DEVICE_ENUM_ADD, uhc_enumeration_error(), uhc_enumeration_step13(), uhd_setup_request(), UHD_TRANS_DISCONNECT, UHD_TRANS_NOERROR, UNUSED, USB_DT_CONFIGURATION, USB_DT_DEVICE, USB_REQ_DIR_IN, USB_REQ_GET_DESCRIPTOR, USB_REQ_RECIP_DEVICE, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_enumeration_step11().

static void uhc_enumeration_step13 ( usb_add_t  add, uhd_trans_status_t  status, uint16_t  payload_trans  )

static

Device enumeration step 13 Requests a complete Get configuration descriptor.

Parameters

add	USB address of the setup request
status	Transfer status
payload_trans	Number of data transfered during DATA phase

References Assert, usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, g_uhc_device_root, le16_to_cpu, uhc_dev_enum, UHC_DEVICE_ENUM_ADD, UHC_ENUM_EVENT, uhc_enumeration_error(), uhc_enumeration_step14(), uhc_enumeration_suspend(), uhc_power_running, uhd_setup_request(), UHD_TRANS_DISCONNECT, UHD_TRANS_NOERROR, UNUSED, USB_CONFIG_ATTR_SELF_POWERED, USB_DT_CONFIGURATION, USB_HOST_POWER_MAX, USB_REQ_DIR_IN, USB_REQ_GET_DESCRIPTOR, USB_REQ_RECIP_DEVICE, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_enumeration_step12().

static void uhc_enumeration_step14 ( usb_add_t  add, uhd_trans_status_t  status, uint16_t  payload_trans  )

static

Device enumeration step 14 Enable USB configuration, if unless one USB interface is supported by UHIs.

Parameters

add	USB address of the setup request
status	Transfer status
payload_trans	Number of data transfered during DATA phase

References usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, le16_to_cpu, uhc_dev_enum, UHC_DEVICE_ENUM_ADD, UHC_ENUM_EVENT, uhc_enumeration_error(), uhc_enumeration_step15(), uhc_enumeration_suspend(), UHC_NB_UHI, uhd_ep_free(), uhd_setup_request(), UHD_TRANS_DISCONNECT, UHD_TRANS_NOERROR, UNUSED, USB_DT_CONFIGURATION, USB_REQ_DIR_OUT, USB_REQ_RECIP_DEVICE, USB_REQ_SET_CONFIGURATION, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_enumeration_step13().

static void uhc_enumeration_step15 ( usb_add_t  add, uhd_trans_status_t  status, uint16_t  payload_trans  )

static

Device enumeration step 15 Enables UHI interfaces.

Parameters

add	USB address of the setup request
status	Transfer status
payload_trans	Number of data transfered during DATA phase

References uhi_api_t::enable, g_uhc_device_root, LE16, uhc_dev_enum, UHC_ENUM_EVENT, uhc_enum_try, uhc_enumeration_error(), UHC_NB_UHI, UHD_TRANS_DISCONNECT, UHD_TRANS_NOERROR, uhi_api_t::uninstall, UNUSED, and USB_V2_1.

Referenced by uhc_enumeration_step14().

static void uhc_enumeration_step2 ( void  )

static

Device enumeration step 2 Lets USB line in IDLE state during 20ms.

References uhc_enable_timeout_callback(), and uhc_enumeration_step3().

Referenced by uhc_enumeration_step1().

static void uhc_enumeration_step3 ( void  )

static

Device enumeration step 3 Reset USB line.

References uhc_enumeration_reset(), and uhc_enumeration_step4().

Referenced by uhc_dev_reset(), and uhc_enumeration_step2().

static void uhc_enumeration_step4 ( void  )

static

Device enumeration step 4 Lets USB line in IDLE state during 100ms.

References uhc_dev_enum, uhc_enable_timeout_callback(), uhc_enumeration_step5(), and uhd_get_speed().

Referenced by uhc_enumeration_step3().

static void uhc_enumeration_step5 ( void  )

static

Device enumeration step 5 Requests the USB device descriptor.

This setup request can be aborted because the control endpoint size is unknown.

References usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, uhc_dev_enum, uhc_enumeration_error(), uhc_enumeration_step6(), uhd_ep0_alloc(), uhd_ep_free(), uhd_setup_request(), USB_DT_DEVICE, USB_REQ_DIR_IN, USB_REQ_GET_DESCRIPTOR, USB_REQ_RECIP_DEVICE, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_enumeration_step4().

static void uhc_enumeration_step6 ( usb_add_t  add, uhd_trans_status_t  status, uint16_t  payload_trans  )

static

Device enumeration step 6 End of Get device descriptor request.

Wait 20ms in IDLE state.

Parameters

add	USB address of the setup request
status	Transfer status
payload_trans	Number of data transfered during DATA phase

References uhc_dev_enum, uhc_enable_timeout_callback(), uhc_enumeration_error(), uhc_enumeration_step7(), UHD_TRANS_DISCONNECT, UHD_TRANS_NOERROR, UNUSED, and USB_DT_DEVICE.

Referenced by uhc_enumeration_step5().

static void uhc_enumeration_step7 ( void  )

static

Device enumeration step 7 Reset USB line.

References uhc_enumeration_reset(), and uhc_enumeration_step8().

Referenced by uhc_enumeration_step6().

static void uhc_enumeration_step8 ( void  )

static

Device enumeration step 8 Lets USB line in IDLE state during 100ms.

References uhc_enable_timeout_callback(), and uhc_enumeration_step9().

Referenced by uhc_enumeration_step7().

static void uhc_enumeration_step9 ( void  )

static

Device enumeration step 9 Send a Set address setup request.

References usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, g_uhc_device_root, uhc_dev_enum, UHC_DEVICE_ENUM_ADD, uhc_enumeration_error(), uhc_enumeration_step10(), uhd_ep0_alloc(), uhd_ep_free(), uhd_setup_request(), USB_REQ_DIR_OUT, USB_REQ_RECIP_DEVICE, USB_REQ_SET_ADDRESS, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_enumeration_step8().

static void uhc_enumeration_suspend ( void  )

static

Enters a specific device in USB suspend mode Suspend the USB line or a port on USB hub.

References g_uhc_device_root, uhc_dev_enum, and uhd_suspend().

Referenced by uhc_enumeration_error(), uhc_enumeration_step13(), and uhc_enumeration_step14().

uint8_t uhc_get_device_number

(

void

)

References g_uhc_device_root, and UHC_USB_ADD_NOT_VALID.

bool uhc_is_suspend

(

void

)

References g_uhc_device_root, UHC_USB_ADD_NOT_VALID, and uhd_is_suspend().

Referenced by uhc_resume(), and UI_WAKEUP_HANDLER().

void uhc_notify_connection

(

bool

b_plug

)

Notify device connection or disconnection.

Parameters

b_plug

Device connection, if true

References Assert, g_uhc_device_root, uhc_connection_tree(), uhc_power_running, and UHC_USB_ADD_NOT_VALID.

Referenced by uhd_disable(), and uhd_interrupt().

void uhc_notify_resume

(

void

)

Notify that a resume bus occurs A resume can occur after a downstream or an upstream resume.

References uhc_remotewakeup(), and UHC_WAKEUP_EVENT.

Referenced by uhd_sof_interrupt().

void uhc_notify_sof

(

bool

b_micro

)

Notify each start of frame sent by driver.

Parameters

b_micro

It is a micro start of frame, if true

References uhi_api_t::sof_notify, UHC_NB_UHI, uhc_sof_timeout, and uhc_sof_timeout_callback.

Referenced by uhd_sof_interrupt().

static void uhc_remotewakeup ( bool  b_enable )

static

Enables or disables the remote wakeup feature of all devices connected.

Parameters

b_enable

true to enable remote wakeup feature, else disable.

References usb_setup_req_t::bmRequestType, usb_setup_req_t::bRequest, g_uhc_device_root, uhd_setup_request(), USB_CONFIG_ATTR_REMOTE_WAKEUP, USB_DEV_FEATURE_REMOTE_WAKEUP, USB_REQ_CLEAR_FEATURE, USB_REQ_DIR_OUT, USB_REQ_RECIP_DEVICE, USB_REQ_SET_FEATURE, USB_REQ_TYPE_STANDARD, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by uhc_notify_resume(), and uhc_suspend().

void uhc_resume

(

void

)

References uhc_is_suspend(), and uhd_resume().

Referenced by UI_WAKEUP_HANDLER().

static void uhc_setup_request_callback ( usb_add_t  add, uhd_trans_status_t  status, uint16_t  payload_trans  )

static

Callback used to signal the end of a setup request.

Parameters

add	USB address of the setup request
status	Transfer status
payload_trans	Number of data transfered during DATA phase

References uhc_setup_request_finish, uhc_setup_request_finish_status, UHD_TRANS_NOERROR, and UNUSED.

Referenced by uhc_dev_get_string(), and uhc_dev_is_high_speed_support().

void uhc_start

(

void

)

Starts the host mode.

References g_uhc_device_root, uhc_sof_timeout, UHC_USB_ADD_NOT_VALID, and uhd_enable().

Referenced by main(), otg_dual_enable(), and otg_id_handler().

void uhc_stop

(

bool

b_id_stop

)

Stops the host mode.

References uhd_disable().

Referenced by otg_id_handler().

void uhc_suspend

(

bool

b_remotewakeup

)

References uhc_enum_try, uhc_remotewakeup(), and uhd_suspend().

Referenced by ui_host_sof_event().

uhc_device_t g_uhc_device_root

static

Entry point of all devices connected on USB tree.

Referenced by uhc_connection_tree(), uhc_enumeration_reset(), uhc_enumeration_step13(), uhc_enumeration_step15(), uhc_enumeration_step9(), uhc_enumeration_suspend(), uhc_get_device_number(), uhc_is_suspend(), uhc_notify_connection(), uhc_remotewakeup(), and uhc_start().

uint8_t uhc_enum_try

static

Number of enumeration try.

Referenced by uhc_connection_tree(), uhc_dev_reset(), uhc_enumeration_error(), uhc_enumeration_step15(), and uhc_suspend().

volatile bool uhc_setup_request_finish

static

Volatile flag to pool the end of Get USB string setup request.

Referenced by uhc_dev_get_string(), uhc_dev_is_high_speed_support(), and uhc_setup_request_callback().

volatile bool uhc_setup_request_finish_status

static

Volatile flag to know the status of Get USB string setup request.

Referenced by uhc_dev_get_string(), uhc_dev_is_high_speed_support(), and uhc_setup_request_callback().

uint8_t uhc_sof_timeout

Number of SOF remaining before call uhc_sof_timeout_callback callback.

Referenced by uhc_connection_tree(), uhc_enable_timeout_callback(), uhc_notify_sof(), and uhc_start().

uhc_sof_timeout_callback_t uhc_sof_timeout_callback

static

Callback currently registered on a SOF timeout.

Referenced by uhc_enable_timeout_callback(), and uhc_notify_sof().

uhi_api_t uhc_uhis[] = {USB_HOST_UHI}

static

Array of all UHI available.