USB low-level driver for USB Host mode.

Data Structures
struct	uhd_ctrl_request_t
	Structure to store the high level setup request. More...

struct	uhd_pipe_job_t
	Structure definition to store registered jobs on a pipe. More...

Macros
#define	dbg_print(...)

#define	UHD_ENDPOINT_MAX_TRANS ((8 *1024 ) - 1)

#define	USB_STATUS_PIPE_CRC16ER (1 << 4)

#define	USB_STATUS_PIPE_DAPIDER (1 << 1)

#define	USB_STATUS_PIPE_DTGLER (1 << 0)

#define	USB_STATUS_PIPE_PIDER (1 << 2)

#define	USB_STATUS_PIPE_TOUTER (1 << 3)

Functions
static void	_uhd_connect (struct usb_module *module_inst)
	Manages connection interrupt. More...

static void	_uhd_ctrl_phase_data_in (uint16_t nb_byte_received)
	Manages the DATA IN phase on control endpoint. More...

static void	_uhd_ctrl_phase_data_in_start (void)
	Starts the DATA IN phase on control endpoint. More...

static void	_uhd_ctrl_phase_data_out (void)
	Manages the DATA OUT phase on control endpoint. More...

static void	_uhd_ctrl_phase_setup (void)
	Sends a USB setup packet to start a control request sequence. More...

static void	_uhd_ctrl_phase_zlp_in (void)
	Starts the ZLP IN phase on control endpoint. More...

static void	_uhd_ctrl_phase_zlp_out (void)
	Starts the ZLP OUT phase on control endpoint. More...

static void	_uhd_ctrl_request_end (uhd_trans_status_t status)
	Call the callback linked to control request and start the next request. More...

static void	_uhd_disconnect (struct usb_module *module_inst)
	Manages disconnection interrupt. More...

static void	_uhd_downstream_resume (struct usb_module *module_inst)
	Manages downstream resume interrupt. More...

static void	_uhd_ep0_error (struct usb_module module_inst, void pointer)
	Manages endpoint 0 error interrupt. More...

static void	_uhd_ep0_setup (struct usb_module module_inst, void null)
	Manages endpoint 0 setup interrupt. More...

static void	_uhd_ep0_stall (struct usb_module module_inst, void null)
	Manages endpoint 0 stall interrupt. More...

static void	_uhd_ep0_transfer_complete (struct usb_module module_inst, void pointer)
	Manages endpoint 0 transfer complete interrupt. More...

static void	_uhd_ep_abort_pipe (uint8_t pipe, uhd_trans_status_t status)
	Aborts the on-going transfer on a pipe. More...

static void	_uhd_ep_error (struct usb_module module_inst, void pointer)
	Manages pipe endpoint error callback. More...

static void	_uhd_ep_stall (struct usb_module module_inst, void pointer)
	Manages pipe endpoint stall interrupt. More...

static uint8_t	_uhd_get_pipe (usb_add_t add, usb_ep_t endp)
	Returns the pipe number matching a USB endpoint. More...

static void	_uhd_pipe_finish_job (uint8_t pipe, uhd_trans_status_t status)
	Call the callback linked to the end of pipe transfer. More...

static void	_uhd_pipe_trans_complete (struct usb_module module_inst, void pointer)
	Computes and starts the next transfer on a pipe. More...

static void	_uhd_ram_error (struct usb_module *module_inst)
	Manages ram access error interrupt. More...

static void	_uhd_reset (struct usb_module *module_inst)
	Manages bus reset interrupt. More...

static void	_uhd_sof_interrupt (struct usb_module *module_inst)
	Manages timeouts and actions based on SOF events. More...

static void	_uhd_upstream_resume (struct usb_module *module_inst)
	Manages upstream resume interrupt. More...

static void	_uhd_wakeup (struct usb_module *module_inst)
	Manages wakeup interrupt. More...

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...

bool	uhd_ep0_alloc (usb_add_t add, uint8_t ep_size)
	Configures and enables a control endpoint 0. More...

void	uhd_ep_abort (usb_add_t add, usb_ep_t endp)
	Aborts an on-going transfer on an endpoint. 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...

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...

bool	uhd_suspend_lpm (bool b_remotewakeup, uint8_t hird)
	Enables the suspend L1 state on the USB line. More...

Variables
struct usb_module	dev

static bool	uhd_lpm_suspend = false
	Notify that USB Host is enter in suspend LPM state. More...

static uhd_callback_reset_t	uhd_reset_callback = NULL
	Store the callback to be called at the end of reset signal. More...

Power management
enum	uhd_usb_state_enum { UHD_STATE_OFF = 0, UHD_STATE_WAIT_ID_HOST = 1, UHD_STATE_NO_VBUS = 2, UHD_STATE_DISCONNECT = 3, UHD_STATE_SUSPEND = 4, UHD_STATE_SUSPEND_LPM = 5, UHD_STATE_IDLE = 6 }
	States of USB interface. More...

enum sleepmgr_mode	sleep_mode []

static enum uhd_usb_state_enum	uhd_state = UHD_STATE_OFF

static void	uhd_sleep_mode (enum uhd_usb_state_enum new_state)
	Manages the sleep mode following the USB state. More...

Control endpoint low level management routine.
This function performs control endpoint management. It handles the SETUP/DATA/HANDSHAKE phases of a control transaction.
enum	uhd_ctrl_request_phase_t { UHD_CTRL_REQ_PHASE_SETUP = 0, UHD_CTRL_REQ_PHASE_DATA_OUT = 1, UHD_CTRL_REQ_PHASE_DATA_IN = 2, UHD_CTRL_REQ_PHASE_ZLP_IN = 3, UHD_CTRL_REQ_PHASE_ZLP_OUT = 4 }
	Bit definitions to store setup request state machine. More...

uint8_t	uhd_ctrl_buffer [64]
	Buffer to store the sent/received data on control endpoint. More...

struct uhd_ctrl_request_t *	uhd_ctrl_request_first
	Entry points of setup request list. More...

struct uhd_ctrl_request_t *	uhd_ctrl_request_last

volatile uint16_t	uhd_ctrl_request_timeout
	Remaining time for on-going setup request (No request on-going if equal 0) More...

uint16_t	uhd_ctrl_nb_trans
	Number of transfered byte on DATA phase of current setup request. More...

static bool	uhd_b_suspend_requested
	Flag to delay a suspend request after all on-going setup request. More...

uhd_ctrl_request_phase_t	uhd_ctrl_request_phase

Management of bulk/interrupt/isochronous endpoints
The UHD manages the data transfer on endpoints: Start data transfer on endpoint with USB DMA Send a ZLP packet if requested Call registered callback to signal end of transfer The transfer abort and stall feature are supported.
static uhd_pipe_job_t	uhd_pipe_job [USB_PIPE_NUM-1]
	Array to register a job on bulk/interrupt/isochronous endpoint. More...

static uint8_t	uhd_suspend_start
	Variables to manage the suspend/resume sequence. More...

static uint8_t	uhd_resume_start

static uint8_t	uhd_pipes_unfreeze

#define dbg_print ( ... )

Referenced by _uhd_connect(), _uhd_disconnect(), _uhd_downstream_resume(), _uhd_ep0_error(), _uhd_ep0_setup(), _uhd_ep0_stall(), _uhd_ep0_transfer_complete(), _uhd_ep_error(), _uhd_ep_stall(), _uhd_ram_error(), _uhd_sof_interrupt(), _uhd_upstream_resume(), _uhd_wakeup(), uhd_enable(), uhd_resume(), and uhd_suspend_lpm().

#define UHD_ENDPOINT_MAX_TRANS ((8 *1024 ) - 1)

Referenced by _uhd_pipe_trans_complete().

#define USB_STATUS_PIPE_CRC16ER (1 << 4)

Referenced by _uhd_ep0_error(), and _uhd_ep_error().

#define USB_STATUS_PIPE_DAPIDER (1 << 1)

Referenced by _uhd_ep0_error(), and _uhd_ep_error().

#define USB_STATUS_PIPE_DTGLER (1 << 0)

Referenced by _uhd_ep0_error(), and _uhd_ep_error().

#define USB_STATUS_PIPE_PIDER (1 << 2)

Referenced by _uhd_ep0_error(), and _uhd_ep_error().

#define USB_STATUS_PIPE_TOUTER (1 << 3)

Referenced by _uhd_ep0_error(), and _uhd_ep_error().

enum uhd_ctrl_request_phase_t

Bit definitions to store setup request state machine.

Enumerator
UHD_CTRL_REQ_PHASE_SETUP	Wait a SETUP packet.
UHD_CTRL_REQ_PHASE_DATA_OUT	Wait a OUT data packet.
UHD_CTRL_REQ_PHASE_DATA_IN	Wait a IN data packet.
UHD_CTRL_REQ_PHASE_ZLP_IN	Wait a IN ZLP packet.
UHD_CTRL_REQ_PHASE_ZLP_OUT	Wait a OUT ZLP packet.

enum uhd_usb_state_enum

States of USB interface.

Enumerator
UHD_STATE_OFF
UHD_STATE_WAIT_ID_HOST
UHD_STATE_NO_VBUS
UHD_STATE_DISCONNECT
UHD_STATE_SUSPEND
UHD_STATE_SUSPEND_LPM
UHD_STATE_IDLE

static void _uhd_connect ( struct usb_module * module_inst )

static

Manages connection interrupt.

Parameters

module_inst Pointer to USB module instance

References dbg_print, dev, uhc_notify_connection(), uhd_resume_start, uhd_sleep_mode(), UHD_STATE_IDLE, uhd_suspend_start, USB_HOST_CALLBACK_CONNECT, USB_HOST_CALLBACK_DISCONNECT, USB_HOST_CALLBACK_WAKEUP, usb_host_disable_callback(), and usb_host_enable_callback().

Referenced by uhd_enable().

static void _uhd_ctrl_phase_data_in ( uint16_t nb_byte_received )

static

Manages the DATA IN phase on control endpoint.

Parameters

nb_byte_received Number of bytes received

In HUB mode, the control pipe is always configured to 64B

thus the short packet flag must be computed

References _uhd_ctrl_phase_zlp_out(), uhd_ctrl_request_t::callback_run, dev, usb_host_pipe_config::device_address, uhd_ctrl_request_t::payload, uhd_ctrl_request_t::payload_size, uhd_ctrl_request_t::req, usb_host_pipe_config::size, uhd_ctrl_buffer, uhd_ctrl_nb_trans, usb_host_pipe_get_config(), usb_host_pipe_read_job(), and usb_setup_req_t::wLength.

Referenced by _uhd_ep0_transfer_complete().

static void _uhd_ctrl_phase_data_in_start ( void )

static

Starts the DATA IN phase on control endpoint.

References dev, usb_host_pipe_config::size, uhd_ctrl_buffer, UHD_CTRL_REQ_PHASE_DATA_IN, uhd_ctrl_request_phase, usb_host_pipe_get_config(), and usb_host_pipe_read_job().

Referenced by _uhd_ep0_setup().

static void _uhd_ctrl_phase_data_out ( void )

static

Manages the DATA OUT phase on control endpoint.

References _uhd_ctrl_phase_zlp_in(), uhd_ctrl_request_t::callback_run, dev, usb_host_pipe_config::device_address, uhd_ctrl_request_t::payload, uhd_ctrl_request_t::payload_size, uhd_ctrl_request_t::req, usb_host_pipe_config::size, uhd_ctrl_buffer, uhd_ctrl_nb_trans, UHD_CTRL_REQ_PHASE_DATA_OUT, uhd_ctrl_request_phase, usb_host_pipe_get_config(), usb_host_pipe_write_job(), and usb_setup_req_t::wLength.

Referenced by _uhd_ep0_setup(), and _uhd_ep0_transfer_complete().

static void _uhd_ctrl_phase_setup ( void )

static

Sends a USB setup packet to start a control request sequence.

References _uhd_ctrl_request_end(), uhd_ctrl_request_t::add, cpu_to_le16, dev, usb_host_pipe_config::device_address, usb_host_pipe_config::pipe_type, uhd_ctrl_request_t::req, uhd_ctrl_buffer, uhd_ctrl_nb_trans, UHD_CTRL_REQ_PHASE_SETUP, uhd_ctrl_request_phase, uhd_ctrl_request_timeout, UHD_TRANS_DISCONNECT, USB_HOST_PIPE_CALLBACK_SETUP, usb_host_pipe_enable_callback(), usb_host_pipe_get_config(), usb_host_pipe_setup_job(), USB_HOST_PIPE_TYPE_DISABLE, usb_setup_req_t::wIndex, usb_setup_req_t::wLength, and usb_setup_req_t::wValue.

Referenced by _uhd_ctrl_request_end(), and uhd_setup_request().

static void _uhd_ctrl_phase_zlp_in ( void )

static

Starts the ZLP IN phase on control endpoint.

References dev, uhd_ctrl_buffer, UHD_CTRL_REQ_PHASE_ZLP_IN, uhd_ctrl_request_phase, and usb_host_pipe_read_job().

Referenced by _uhd_ctrl_phase_data_out(), and _uhd_ep0_setup().

static void _uhd_ctrl_phase_zlp_out ( void )

static

Starts the ZLP OUT phase on control endpoint.

References dev, uhd_ctrl_buffer, UHD_CTRL_REQ_PHASE_ZLP_OUT, uhd_ctrl_request_phase, and usb_host_pipe_write_job().

Referenced by _uhd_ctrl_phase_data_in().

static void _uhd_ctrl_request_end ( uhd_trans_status_t status )

static

Call the callback linked to control request and start the next request.

Parameters

status Request finish status passed to callback

References _uhd_ctrl_phase_setup(), Assert, uhd_ctrl_request_t::callback_end, cpu_irq_restore(), cpu_irq_save(), dev, usb_host_pipe_config::device_address, uhd_ctrl_request_t::next_request, uhd_b_suspend_requested, uhd_ctrl_nb_trans, uhd_ctrl_request_first, uhd_ctrl_request_timeout, uhd_suspend(), and usb_host_pipe_get_config().

Referenced by _uhd_ctrl_phase_setup(), _uhd_ep0_error(), _uhd_ep0_stall(), _uhd_ep0_transfer_complete(), _uhd_sof_interrupt(), and uhd_ep_free().

static void _uhd_disconnect ( struct usb_module * module_inst )

static

Manages disconnection interrupt.

Parameters

module_inst Pointer to USB module instance

References dbg_print, dev, uhc_notify_connection(), uhd_resume_start, uhd_sleep_mode(), UHD_STATE_DISCONNECT, uhd_suspend_start, USB_HOST_CALLBACK_CONNECT, USB_HOST_CALLBACK_DISCONNECT, USB_HOST_CALLBACK_WAKEUP, usb_host_disable_callback(), and usb_host_enable_callback().

Referenced by uhd_enable().

static void _uhd_downstream_resume ( struct usb_module * module_inst )

static

Manages downstream resume interrupt.

Parameters

module_inst Pointer to USB module instance

References dbg_print, dev, uhc_notify_resume_lpm(), uhd_lpm_suspend, uhd_resume_start, uhd_sleep_mode(), UHD_STATE_IDLE, USB_HOST_CALLBACK_DNRSM, USB_HOST_CALLBACK_UPRSM, USB_HOST_CALLBACK_WAKEUP, and usb_host_disable_callback().

Referenced by uhd_enable().

static void _uhd_ep0_error	(	struct usb_module *	module_inst,
		void *	pointer
	)

static

Manages endpoint 0 error interrupt.

Parameters

module_inst	Pointer to USB module instance
pointer	Pointer to USB pipe transfer callback status parameters

References _uhd_ctrl_request_end(), dbg_print, dev, usb_pipe_callback_parameter::pipe_error_status, usb_host_pipe_config::pipe_type, UHD_TRANS_CRC, UHD_TRANS_DT_MISMATCH, UHD_TRANS_NOTRESPONDING, UHD_TRANS_PIDFAILURE, UHD_TRANS_TIMEOUT, usb_host_pipe_get_config(), usb_host_pipe_set_config(), USB_HOST_PIPE_TYPE_CONTROL, USB_HOST_PIPE_TYPE_EXTENDED, USB_STATUS_PIPE_CRC16ER, USB_STATUS_PIPE_DAPIDER, USB_STATUS_PIPE_DTGLER, USB_STATUS_PIPE_PIDER, and USB_STATUS_PIPE_TOUTER.

Referenced by uhd_ep0_alloc().

static void _uhd_ep0_setup	(	struct usb_module *	module_inst,
		void *	null
	)

static

Manages endpoint 0 setup interrupt.

Parameters

module_inst	Pointer to USB module instance
null	Not used

References _uhd_ctrl_phase_data_in_start(), _uhd_ctrl_phase_data_out(), _uhd_ctrl_phase_zlp_in(), Assert, usb_setup_req_t::bmRequestType, dbg_print, dev, uhd_ctrl_request_t::req, UHD_CTRL_REQ_PHASE_SETUP, uhd_ctrl_request_phase, USB_REQ_DIR_IN, USB_REQ_DIR_MASK, and usb_setup_req_t::wLength.

Referenced by uhd_ep0_alloc().

static void _uhd_ep0_stall	(	struct usb_module *	module_inst,
		void *	null
	)

static

Manages endpoint 0 stall interrupt.

Parameters

module_inst	Pointer to USB module instance
null	Not used

References _uhd_ctrl_request_end(), dbg_print, dev, usb_host_pipe_config::pipe_type, UHD_TRANS_STALL, usb_host_pipe_get_config(), usb_host_pipe_set_config(), USB_HOST_PIPE_TYPE_CONTROL, and USB_HOST_PIPE_TYPE_EXTENDED.

Referenced by uhd_ep0_alloc().

static void _uhd_ep0_transfer_complete	(	struct usb_module *	module_inst,
		void *	pointer
	)

static

Manages endpoint 0 transfer complete interrupt.

Parameters

module_inst	Pointer to USB module instance
pointer	Pointer to USB pipe transfer callback status parameters

References _uhd_ctrl_phase_data_in(), _uhd_ctrl_phase_data_out(), _uhd_ctrl_request_end(), Assert, dbg_print, dev, usb_host_pipe_config::pipe_type, usb_pipe_callback_parameter::transfered_size, UHD_CTRL_REQ_PHASE_DATA_IN, UHD_CTRL_REQ_PHASE_DATA_OUT, UHD_CTRL_REQ_PHASE_ZLP_IN, UHD_CTRL_REQ_PHASE_ZLP_OUT, uhd_ctrl_request_phase, uhd_lpm_suspend, uhd_sleep_mode(), UHD_STATE_SUSPEND_LPM, UHD_TRANS_NOERROR, USB_HOST_CALLBACK_DNRSM, USB_HOST_CALLBACK_UPRSM, USB_HOST_CALLBACK_WAKEUP, usb_host_enable_callback(), usb_host_pipe_get_config(), usb_host_pipe_set_config(), USB_HOST_PIPE_TYPE_CONTROL, and USB_HOST_PIPE_TYPE_EXTENDED.

Referenced by uhd_ep0_alloc().

static void _uhd_ep_abort_pipe	(	uint8_t	pipe,
		uhd_trans_status_t	status
	)

static

Aborts the on-going transfer on a pipe.

Parameters

pipe	Pipe number
status	Reason of abort

References _uhd_pipe_finish_job(), and dev.

Referenced by _uhd_ep_error(), _uhd_ep_stall(), _uhd_sof_interrupt(), and uhd_ep_abort().

static void _uhd_ep_error	(	struct usb_module *	module_inst,
		void *	pointer
	)

static

Manages pipe endpoint error callback.

Parameters

module_inst	Pointer to USB module instance
pointer	Pointer to USB pipe transfer callback status parameters

References _uhd_ep_abort_pipe(), dbg_print, usb_pipe_callback_parameter::pipe_error_status, usb_pipe_callback_parameter::pipe_num, UHD_TRANS_CRC, UHD_TRANS_DT_MISMATCH, UHD_TRANS_NOTRESPONDING, UHD_TRANS_PIDFAILURE, UHD_TRANS_TIMEOUT, USB_STATUS_PIPE_CRC16ER, USB_STATUS_PIPE_DAPIDER, USB_STATUS_PIPE_DTGLER, USB_STATUS_PIPE_PIDER, and USB_STATUS_PIPE_TOUTER.

Referenced by uhd_ep_alloc().

static void _uhd_ep_stall	(	struct usb_module *	module_inst,
		void *	pointer
	)

static

Manages pipe endpoint stall interrupt.

Parameters

module_inst	Pointer to USB module instance
pointer	Pointer to USB pipe transfer callback status parameters

References _uhd_ep_abort_pipe(), dbg_print, dev, usb_pipe_callback_parameter::pipe_num, and UHD_TRANS_STALL.

Referenced by uhd_ep_alloc().

static uint8_t _uhd_get_pipe	(	usb_add_t	add,
		usb_ep_t	endp
	)

static

Returns the pipe number matching a USB endpoint.

Parameters

add	USB device address
endp	Endpoint Address

Returns: Pipe number

References dev, usb_host_pipe_config::device_address, usb_host_pipe_config::endpoint_address, and usb_host_pipe_get_config().

Referenced by uhd_ep_abort(), and uhd_ep_run().

static void _uhd_pipe_finish_job	(	uint8_t	pipe,
		uhd_trans_status_t	status
	)

static

Call the callback linked to the end of pipe transfer.

Parameters

pipe	Pipe number
status	Status of the transfer

References uhd_pipe_job_t::buf_internal, uhd_pipe_job_t::busy, uhd_pipe_job_t::call_end, dev, usb_host_pipe_config::device_address, usb_host_pipe_config::endpoint_address, uhd_pipe_job_t::nb_trans, and usb_host_pipe_get_config().

Referenced by _uhd_ep_abort_pipe(), _uhd_pipe_trans_complete(), and uhd_ep_free().

static void _uhd_pipe_trans_complete	(	struct usb_module *	module_inst,
		void *	pointer
	)

static

Computes and starts the next transfer on a pipe.

Parameters

module_inst	Pointer to USB module instance
pointer	Pointer to USB pipe transfer callback status parameters

The USB hardware supports a maximum transfer size of UHD_ENDPOINT_MAX_TRANS Bytes

If all previous requested data have been received and user buffer not full then need to receive other data

References _uhd_pipe_finish_job(), Assert, uhd_pipe_job_t::b_shortpacket, uhd_pipe_job_t::buf, uhd_pipe_job_t::buf_internal, uhd_pipe_job_t::buf_size, uhd_pipe_job_t::busy, cpu_irq_restore(), cpu_irq_save(), dev, usb_host_pipe_config::endpoint_address, uhd_pipe_job_t::nb_trans, usb_pipe_callback_parameter::pipe_num, usb_pipe_callback_parameter::required_size, usb_host_pipe_config::size, usb_pipe_callback_parameter::transfered_size, UHD_ENDPOINT_MAX_TRANS, UHD_TRANS_NOERROR, USB_EP_DIR_IN, USB_HOST_PIPE_CALLBACK_TRANSFER_COMPLETE, usb_host_pipe_enable_callback(), usb_host_pipe_get_config(), usb_host_pipe_read_job(), usb_host_pipe_set_auto_zlp(), and usb_host_pipe_write_job().

Referenced by uhd_ep_alloc(), and uhd_ep_run().

static void _uhd_ram_error ( struct usb_module * module_inst )

static

Manages ram access error interrupt.

Parameters

module_inst Pointer to USB module instance

References dbg_print.

Referenced by uhd_enable().

static void _uhd_reset ( struct usb_module * module_inst )

static

Manages bus reset interrupt.

Parameters

module_inst Pointer to USB module instance

References uhd_reset_callback.

Referenced by uhd_enable().

static void _uhd_sof_interrupt ( struct usb_module * module_inst )

static

Manages timeouts and actions based on SOF events.

Suspend delay
Resume delay
Setup packet delay
Timeout on endpoint control transfer
Timeouts on bulk/interrupt/isochronous endpoint transfers
UHC user notification
SOF user notification

Parameters

module_inst Pointer to USB module instance

References _uhd_ctrl_request_end(), _uhd_ep_abort_pipe(), uhd_pipe_job_t::busy, dbg_print, dev, uhd_pipe_job_t::timeout, uhc_notify_resume(), uhc_notify_sof(), UHC_SOF_EVENT, uhd_ctrl_request_timeout, uhd_pipes_unfreeze, uhd_resume_start, uhd_sleep_mode(), UHD_STATE_SUSPEND, uhd_suspend_start, UHD_TRANS_TIMEOUT, usb_get_state_machine_status(), USB_HOST_CALLBACK_DNRSM, USB_HOST_CALLBACK_UPRSM, USB_HOST_CALLBACK_WAKEUP, and usb_host_enable_callback().

Referenced by uhd_enable().

static void _uhd_upstream_resume ( struct usb_module * module_inst )

static

Manages upstream resume interrupt.

Parameters

module_inst Pointer to USB module instance

References dbg_print, dev, uhc_notify_resume_lpm(), uhd_lpm_suspend, uhd_resume_start, uhd_sleep_mode(), UHD_STATE_IDLE, USB_HOST_CALLBACK_DNRSM, USB_HOST_CALLBACK_UPRSM, USB_HOST_CALLBACK_WAKEUP, and usb_host_disable_callback().

Referenced by uhd_enable().

static void _uhd_wakeup ( struct usb_module * module_inst )

static

Manages wakeup interrupt.

Parameters

module_inst Pointer to USB module instance

References dbg_print, dev, uhc_notify_resume_lpm(), uhd_lpm_suspend, uhd_resume_start, uhd_sleep_mode(), UHD_STATE_IDLE, USB_HOST_CALLBACK_DNRSM, USB_HOST_CALLBACK_UPRSM, USB_HOST_CALLBACK_WAKEUP, and usb_host_disable_callback().

Referenced by uhd_enable().

void uhd_disable ( bool b_id_stop )

Disables the USB host mode.

Parameters

b_id_stop Stop ID pin management, if true.

References cpu_irq_restore(), cpu_irq_save(), dev, EXTINT_CALLBACK_TYPE_DETECT, extint_chan_disable_callback(), uhc_notify_connection(), uhd_sleep_mode(), UHD_STATE_WAIT_ID_HOST, UNUSED, usb_dual_disable(), USB_HOST_CALLBACK_CONNECT, USB_HOST_CALLBACK_DISCONNECT, USB_HOST_CALLBACK_RAMACER, USB_HOST_CALLBACK_RESET, USB_HOST_CALLBACK_SOF, usb_host_disable_callback(), and USB_VBUS_EIC_LINE.

Referenced by uhc_stop().

void uhd_enable ( void )

Enables the USB host mode Start the ID pin management if the ID pin is available.

Referenced by uhc_start().

bool uhd_ep0_alloc	(	usb_add_t	add,
		uint8_t	ep_size
	)

Configures and enables a control endpoint 0.

Parameters

add	USB address of endpoint
ep_size	Endpoint control maximum size

Returns: 1 if the endpoint is enabled, otherwise 0.

References _uhd_ep0_error(), _uhd_ep0_setup(), _uhd_ep0_stall(), _uhd_ep0_transfer_complete(), usb_host_pipe_config::binterval, dev, usb_host_pipe_config::device_address, usb_host_pipe_config::size, USB_HOST_PIPE_CALLBACK_ERROR, USB_HOST_PIPE_CALLBACK_SETUP, USB_HOST_PIPE_CALLBACK_STALL, USB_HOST_PIPE_CALLBACK_TRANSFER_COMPLETE, usb_host_pipe_enable_callback(), usb_host_pipe_get_config_defaults(), usb_host_pipe_register_callback(), and usb_host_pipe_set_config().

Referenced by uhc_enumeration_step11(), uhc_enumeration_step5(), and uhc_enumeration_step9().

void uhd_ep_abort	(	usb_add_t	add,
		usb_ep_t	endp
	)

Aborts an on-going transfer on an endpoint.

If a transfer is on going, then it is stopped and the callback registered is called to signal the end of transfer. Note: The control endpoint is not authorized.

Parameters

add	USB address of endpoint
endp	Endpoint to abort

References _uhd_ep_abort_pipe(), _uhd_get_pipe(), and UHD_TRANS_ABORTED.

bool uhd_ep_alloc	(	usb_add_t	add,
		usb_ep_desc_t *	ep_desc,
		uhd_speed_t	speed
	)

Configures and enables an endpoint.

Parameters

add	USB address of endpoint
ep_desc	Endpoint descriptor
speed	Endpoint working speed

Returns: 1 if the endpoint is enabled, otherwise 0.

References _uhd_ep_error(), _uhd_ep_stall(), _uhd_pipe_trans_complete(), usb_ep_desc_t::bEndpointAddress, usb_host_pipe_config::binterval, usb_ep_desc_t::bInterval, usb_ep_desc_t::bmAttributes, dev, usb_host_pipe_config::device_address, usb_host_pipe_config::endpoint_address, le16_to_cpu, usb_host_pipe_config::pipe_type, usb_host_pipe_config::size, USB_EP_TYPE_MASK, USB_HOST_PIPE_CALLBACK_ERROR, USB_HOST_PIPE_CALLBACK_STALL, USB_HOST_PIPE_CALLBACK_TRANSFER_COMPLETE, usb_host_pipe_enable_callback(), usb_host_pipe_get_config(), usb_host_pipe_get_config_defaults(), usb_host_pipe_register_callback(), usb_host_pipe_set_config(), USB_HOST_PIPE_TYPE_DISABLE, and usb_ep_desc_t::wMaxPacketSize.

void uhd_ep_free	(	usb_add_t	add,
		usb_ep_t	endp
	)

Disables an endpoint or all endpoint of a device.

Parameters

add	USB address of endpoint
endp	Endpoint number and direction (USB_EP_DIR_IN/OUT). Remove all endpoints of USB address, if 0xFF.

References _uhd_ctrl_request_end(), _uhd_pipe_finish_job(), dev, usb_host_pipe_config::device_address, usb_host_pipe_config::endpoint_address, usb_host_pipe_config::pipe_type, uhd_ctrl_request_timeout, UHD_TRANS_DISCONNECT, usb_host_pipe_get_config(), and USB_HOST_PIPE_TYPE_DISABLE.

Referenced by uhc_connection_tree(), uhc_enumeration_error(), uhc_enumeration_step11(), uhc_enumeration_step14(), uhc_enumeration_step5(), and uhc_enumeration_step9().

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.

If a USB DMA is available, the driver uses it to transfer endpoint data from or to internal RAM. When the transfer is finished or aborted (stall, reset, ...), the callback is called. This callback returns the transfer status and eventually the number of byte transfered. Note: The control endpoint is not authorized.

Parameters

add	USB address of endpoint
endp	Endpoint number
b_shortpacket	Enabled automatic short packet
buf	Buffer on Internal RAM to send or fill. It must be align, then use COMPILER_WORD_ALIGNED.
buf_size	Buffer size to send or fill
timeout	Transfer timeout (ms)
callback	NULL or function to call at the end of transfer

Warning: About b_shortpacket, for OUT endpoint it means that a short packet or a Zero Length Packet (ZLP) must be sent to the USB line to properly close the USB transfer at the end of the data transfer. For Bulk and Interrupt IN endpoint, it will automatically stop the transfer at the end of the data transfer (received short packet).; About buf_size, for OUT endpoint the data is sent packet by packet until size is achieved. If the size is multiple of endpoint size ZLP may be sent according to the b_shortpacket setting. For IN endpoint the data is received packet by packet, if the last packet exceeds the buffer size, the overflow data will be discarded. So for IN endpoint it's better to allocate buffer size aligned to endpoint size so no returned data is lost.; About timeout, for BULK endpoint with timeout set to zero, it means that the transfer will never be stopped before transfer done. Since most of USB embedded peripherals do not manage the transfer bandwidth by peripheral hardware, such a BULK transfer will occupy all USB non-periodic transfer bandwidth. In this case, other BULK transfers started later will be pending until this transfer is done and bandwidth released. So it is better to use BULK transfers with none zero timeout.

Returns: 1 if function was successfully done, otherwise 0.

References _uhd_get_pipe(), _uhd_pipe_trans_complete(), uhd_pipe_job_t::b_shortpacket, uhd_pipe_job_t::buf, uhd_pipe_job_t::buf_size, uhd_pipe_job_t::busy, uhd_pipe_job_t::call_end, cpu_irq_restore(), cpu_irq_save(), dev, uhd_pipe_job_t::nb_trans, usb_pipe_callback_parameter::pipe_num, usb_pipe_callback_parameter::required_size, uhd_pipe_job_t::timeout, and usb_pipe_callback_parameter::transfered_size.

Referenced by uhi_msc_transfer().

uint16_t uhd_get_frame_number ( void )

Returns the current Start Of Frame (SOF) number.

Returns: current start of frame number.

References dev.

uint16_t uhd_get_microframe_number ( void )

Returns the current micro start of frame number.

Returns: current micro start of frame number required in high speed mode.

uhd_speed_t uhd_get_speed ( void )

Returns the speed of connected device.

Returns: Device speed

References Assert, dev, UHD_SPEED_FULL, UHD_SPEED_LOW, USB_SPEED_FULL, and USB_SPEED_LOW.

Referenced by uhc_enumeration_step4().

bool uhd_is_suspend ( void )

Test if the suspend state is enabled on the USB line.

Returns: USB line in SUSPEND state, if true

References dev.

Referenced by uhc_is_suspend().

void uhd_resume ( void )

Enables the IDLE state on the USB line.

The IDLE state is enable when SOF are present on USB line. A Downstream Resume signal can be sent.

References dbg_print, dev, usb_host_pipe_config::pipe_type, uhd_lpm_suspend, uhd_resume_start, uhd_sleep_mode(), UHD_STATE_IDLE, uhd_suspend_start, usb_host_pipe_get_config(), and USB_HOST_PIPE_TYPE_EXTENDED.

Referenced by uhc_resume().

void uhd_send_reset ( uhd_callback_reset_t callback )

Enables the Reset state on the USB line.

Parameters

callback Callback when reset sequence is finished

References dev, and uhd_reset_callback.

Referenced by uhc_enumeration_reset().

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.

Note: Request timeout is 5s.

Parameters

add	USB address of control endpoint
req	Setup request definition
payload	Buffer to use in setup DATA phase
payload_size	Size of buffer used in DATA phase
callback_run	Callback to call if buffer is empty or full
callback_end	Callback to call when request is finish

Returns: true if the request has been accepted, otherwise false. Note: The swap of "req.wValues" from uin16_t to le16_t is done by UHD.

References _uhd_ctrl_phase_setup(), uhd_ctrl_request_t::add, Assert, uhd_ctrl_request_t::callback_end, uhd_ctrl_request_t::callback_run, cpu_irq_restore(), cpu_irq_save(), uhd_ctrl_request_t::next_request, uhd_ctrl_request_t::payload, uhd_ctrl_request_t::payload_size, and uhd_ctrl_request_t::req.

Referenced by uhc_dev_get_string(), uhc_dev_is_high_speed_support(), uhc_enumeration_step11(), uhc_enumeration_step12(), uhc_enumeration_step13(), uhc_enumeration_step14(), uhc_enumeration_step5(), uhc_enumeration_step9(), uhc_remotewakeup(), uhc_request_bos_desc(), uhi_msc_enable_step1(), and uhi_msc_reset_endpoint().

static void uhd_sleep_mode ( enum uhd_usb_state_enum new_state )

static

Manages the sleep mode following the USB state.

Parameters

new_state New USB state

References sleep_mode, sleepmgr_lock_mode(), sleepmgr_unlock_mode(), uhd_state, and UHD_STATE_OFF.

Referenced by _uhd_connect(), _uhd_disconnect(), _uhd_downstream_resume(), _uhd_ep0_transfer_complete(), _uhd_sof_interrupt(), _uhd_upstream_resume(), _uhd_wakeup(), uhd_disable(), uhd_enable(), and uhd_resume().

void uhd_suspend ( void )

Enables the suspend state on the USB line.

The SUSPEND state is enable when SOF are disabled on USB line.

References dev, uhd_b_suspend_requested, uhd_ctrl_request_timeout, uhd_pipes_unfreeze, and uhd_suspend_start.

Referenced by _uhd_ctrl_request_end(), uhc_enumeration_suspend(), and uhc_suspend().

bool uhd_suspend_lpm	(	bool	b_remotewakeup,
		uint8_t	hird
	)

Enables the suspend L1 state on the USB line.

The SUSPEND LPM state is enable when a LPM transaction is done.

Parameters

b_remotewakeup	Authorize the remote wakeup features, if true
hird	Host Initiated Resume Duration

Returns: USB line in SUSPEND state, if true

References dbg_print, dev, uhd_ctrl_request_timeout, and usb_host_pipe_lpm_job().

Referenced by uhc_suspend_lpm().

struct usb_module dev

Referenced by _uhd_connect(), _uhd_ctrl_phase_data_in(), _uhd_ctrl_phase_data_in_start(), _uhd_ctrl_phase_data_out(), _uhd_ctrl_phase_setup(), _uhd_ctrl_phase_zlp_in(), _uhd_ctrl_phase_zlp_out(), _uhd_ctrl_request_end(), _uhd_disconnect(), _uhd_downstream_resume(), _uhd_ep0_error(), _uhd_ep0_setup(), _uhd_ep0_stall(), _uhd_ep0_transfer_complete(), _uhd_ep_abort_pipe(), _uhd_ep_stall(), _uhd_get_pipe(), _uhd_pipe_finish_job(), _uhd_pipe_trans_complete(), _uhd_sof_interrupt(), _uhd_upstream_resume(), _uhd_wakeup(), uhc_connection_tree(), uhc_dev_reset(), uhc_enumeration_step13(), uhc_enumeration_step9(), uhc_get_device_number(), uhc_remotewakeup(), uhd_disable(), uhd_enable(), uhd_ep0_alloc(), uhd_ep_alloc(), uhd_ep_free(), uhd_ep_run(), uhd_get_frame_number(), uhd_get_speed(), uhd_is_suspend(), uhd_resume(), uhd_send_reset(), uhd_suspend(), and uhd_suspend_lpm().

enum sleepmgr_mode sleep_mode[]

Initial value:

= {
    SLEEPMGR_STANDBY,  
    SLEEPMGR_IDLE_0,   
    SLEEPMGR_IDLE_0,   
    SLEEPMGR_IDLE_0,   
    SLEEPMGR_IDLE_2,   
    SLEEPMGR_IDLE_2,   
    SLEEPMGR_IDLE_0,   
}