Xmega USB Device Driver

USBC low-level driver for USB Device mode.

USBB Custom configuration

The following USBB driver configuration must be included in the conf_usb.h file of the application.

UDD_USB_INT_LEVEL
Option to change the interrupt priority (USB_INTLVL_x_gc) by default USB_INTLVL_LO_gc (recommended).

management

The USB driver is fully managed by interrupt and does not request periodic task. Thereby, the USB events use callbacks to transfer the information. The callbacks are declared in static during compilation or in variable during code execution.

Static declarations defined in conf_usb.h:

• UDC_VBUS_EVENT(bool b_present)
  To signal Vbus level change
• UDC_SUSPEND_EVENT()
  Called when USB bus enter in suspend mode
• UDC_RESUME_EVENT()
  Called when USB bus is wakeup
• UDC_SOF_EVENT()
  Called for each received SOF, Note: Each 1ms in HS/FS mode only.

Dynamic callbacks, called "endpoint job" , are registered in udd_ep_job_t structure via the following functions:

• udd_ep_run()
  To call it when a transfer is finish
• udd_ep_wait_stall_clear()
  To call it when a endpoint halt is disabled

mode management

The Sleep modes authorized :

• in USB IDLE state, the USB needs of USB clock and authorizes up to IDLE mode
• in USB SUSPEND state, the USB no needs USB clock but requests a minimum clock restart timing. Thus, it authorizes up to POWER_DOWN or STANDBY mode.

The USB_SLEEP_MODE_USB_IDLE equals SLEEPMGR_IDLE.

The USB_SLEEP_MODE_USB_SUSPEND depends on USB clock startup timing: | Clock Startup | Sleep mode authorized | | >10ms | SLEEPMGR_STDBY | | <=10ms | SLEEPMGR_PDOWN |

Data Structures
struct	udd_ep_job_t
	Structure definition about job registered on an endpoint. More...
struct	udd_sram_data
	USB SRAM data about fifo, endpoint descriptor table and frame number. More...

Functions
	ISR (USB_BUSEVENT_vect)
	Function called by USB bus event interrupt. More...
	ISR (USB_TRNCOMPL_vect)
	Function called by USB transfer complete interrupt. More...
void	udd_attach (void)
	Attach device to the bus when possible. More...
void	udd_detach (void)
	Detaches the device from the bus. More...
void	udd_disable (void)
	Disables the USB Device mode. More...
void	udd_enable (void)
	Enables the USB Device mode. More...
void	udd_ep_abort (udd_ep_id_t ep)
	Aborts transfer on going on endpoint. More...
bool	udd_ep_alloc (udd_ep_id_t ep, uint8_t bmAttributes, uint16_t MaxEndpointSize)
	Configures and enables an endpoint. More...
bool	udd_ep_clear_halt (udd_ep_id_t ep)
	Clear the halted state of the endpoint ep. More...
void	udd_ep_free (udd_ep_id_t ep)
	Disables an endpoint. More...
static UDD_EP_t *	udd_ep_get_ctrl (udd_ep_id_t ep)
static void	udd_ep_init (udd_ep_id_t ep, uint8_t bmAttributes, uint16_t MaxEndpointSize)
bool	udd_ep_is_halted (udd_ep_id_t ep)
	Check if the endpoint ep is halted. More...
bool	udd_ep_run (udd_ep_id_t ep, bool b_shortpacket, uint8_t *buf, iram_size_t buf_size, udd_callback_trans_t callback)
	Allows to receive or send data on an endpoint. More...
bool	udd_ep_set_halt (udd_ep_id_t ep)
	Set the halted state of the endpoint ep. More...
bool	udd_ep_wait_stall_clear (udd_ep_id_t ep, udd_callback_halt_cleared_t callback)
	Registers a callback to call when endpoint halt is cleared. More...
uint16_t	udd_get_frame_number (void)
	Returns the current start of frame number. More...
uint16_t	udd_get_micro_frame_number (void)
	Returns the current micro start of frame number. More...
uint8_t	udd_getaddress (void)
	Returns the USB address of device. More...
bool	udd_include_vbus_monitoring (void)
	Authorizes the VBUS event. More...
bool	udd_is_high_speed (void)
	Test whether the USB Device Controller is running at high speed or not. More...
void	udd_send_remotewakeup (void)
	The USB driver sends a resume signal called Upstream Resume. More...
void	udd_set_address (uint8_t address)
	Changes the USB address of device. More...
void	udd_set_setup_payload (uint8_t *payload, uint16_t payload_size)
	Load setup payload. More...

Power management routine.
static bool	udd_b_idle
	State of USB line. More...
static void	udd_sleep_mode (bool b_idle)
	Authorize or not the CPU powerdown mode. More...
#define	USBC_SLEEP_MODE_USB_SUSPEND   SLEEPMGR_PDOWN
	Definition of sleep levels. More...
#define	USBC_SLEEP_MODE_USB_IDLE   SLEEPMGR_IDLE

Control endpoint low level management routine.
This function performs control endpoint management. It handle the SETUP/DATA/HANDSHAKE phases of a control transaction.
	udd_ctrl_ep_state_t
static udd_ctrl_ep_state_t	udd_ep_control_state
	State of the endpoint control management. More...
static uint16_t	udd_ctrl_prev_payload_nb_trans
	Total number of data received/sent during data packet phase with previous payload buffers. More...
static uint16_t	udd_ctrl_payload_nb_trans
	Number of data received/sent to/from udd_g_ctrlreq.payload buffer. More...
static uint8_t	udd_ctrl_buffer [USB_DEVICE_EP_CTRL_SIZE]
	Buffer to store the data received on control endpoint (SETUP/OUT endpoint 0) More...
static void	udd_ctrl_init (void)
	Reset control endpoint management. More...
static void	udd_ctrl_setup_received (void)
	Managed reception of SETUP packet on control endpoint. More...
static void	udd_ctrl_in_sent (void)
	Managed reception of IN packet on control endpoint. More...
static void	udd_ctrl_out_received (void)
	Managed reception of OUT packet on control endpoint. More...
static void	udd_ctrl_underflow (void)
	Managed underflow event of IN packet on control endpoint It is used to detect a DATA phase stopped by the host via a ZLP request. More...
static void	udd_ctrl_overflow (void)
	Managed overflow event of OUT packet on control endpoint It is used to detect a DATA phase stopped by the host via a ZLP request. More...
static void	udd_ctrl_stall_data (void)
	Managed stall event of IN/OUT packet on control endpoint. More...
static void	udd_ctrl_send_zlp_in (void)
	Send a ZLP IN on control endpoint. More...
static void	udd_ctrl_send_zlp_out (void)
	Send a ZLP OUT on control endpoint. More...
static void	udd_ctrl_endofrequest (void)
	Call callback associated to setup request. More...
static bool	udd_ctrl_interrupt_error (void)
	Sub interrupt routine to manage error on control endpoint. More...
static bool	udd_ctrl_interrupt_tc_setup (void)
	Sub interrupt routine to manage a SETUP transfer complete on control endpoint. More...

Management of bulk/interrupt/isochronous endpoints
The UDD manages the data transfer on endpoints: Start data transfer on endpoint with USB Device DMA Send a ZLP packet if requested Call callback registered to signal end of transfer The transfer abort and stall feature are supported.
static udd_ep_job_t	udd_ep_job [USB_DEVICE_MAX_EP *2]
	Array to register a job on bulk/interrupt/isochronous endpoint. More...
static uint8_t	udd_ep_out_cache_buffer [USB_DEVICE_MAX_EP][64]
	Buffer to store the data received on bulk/interrupt endpoints. More...
bool	udd_ep_is_valid (udd_ep_id_t ep)
	Checks endpoint number. More...
static void	udd_ep_trans_complet (udd_ep_id_t ep)
	Manages transfer complete on bulk/interrupt/isochronous endpoints. More...
static uint16_t	udd_ep_get_size (UDD_EP_t *ep_ctrl)
	Returns the size of endpoint. More...
static udd_ep_job_t *	udd_ep_get_job (udd_ep_id_t ep)
	Returns a pointer on endpoint job corresponding at endpoint number. More...

USB Device main management
static void	usb_pad_init (void)
	Initializes the USB DP/DM buffers. More...
#define	udd_enable_interface()   (USB_CTRLA |= USB_ENABLE_bm)
#define	udd_disable_interface()   (USB_CTRLA &= ~USB_ENABLE_bm)
#define	udd_attach_device()   (USB_CTRLB |= USB_ATTACH_bm)
#define	udd_detach_device()   (USB_CTRLB &= ~USB_ATTACH_bm)
#define	udd_gnak_disable()   (USB_CTRLB &= ~USB_GNACK_bm)
#define	udd_gnak_enable()   (USB_CTRLB |= USB_GNACK_bm)
#define	udd_gnak_is_enable()   (USB_CTRLB & USB_GNACK_bm)
#define	udd_set_nb_max_ep(n)   (USB_CTRLA |= n)
#define	udd_enable_store_frame_number()   (USB_CTRLA |= USB_STFRNUM_bm)
#define	udd_disable_store_frame_number()   (USB_CTRLA &= ~USB_STFRNUM_bm)
#define	udd_set_full_speed()   (USB_CTRLA |= USB_SPEED_bm)
#define	udd_set_low_speed()   (USB_CTRLA &= ~USB_SPEED_bm)
#define	udd_set_ep_table_addr(n)   (USB.EPPTR = (uint16_t)n)
#define	udd_get_ep_table_addr()   (USB.EPPTR)
#define	udd_get_fifo_rp()   (USB_FIFORP)
#define	udd_reset_fifo()   (USB_FIFORP=0xFF)
#define	udd_enable_interrupt(level)   (USB_INTCTRLA |= level&(USB_INTLVL1_bm|USB_INTLVL0_bm))
#define	udd_set_device_address(n)   (USB_ADDR=n)
#define	udd_get_device_address()   (USB_ADDR)
#define	udd_enable_fifo()   (USB_CTRLA |= USB_FIFOEN_bm)
#define	udd_disable_fifo()   (USB_CTRLA &= ~USB_FIFOEN_bm)
#define	udd_send_remote_wake_up()   (USB_CTRLB &= ~USB_RWAKEUP_bm, USB_CTRLB |= USB_RWAKEUP_bm)
#define	udd_set_global_nack()   (USB_CTRLB |= USB_GNACK_bm)
#define	udd_is_crc_event()   (USB_INTFLAGSASET & USB_CRCIF_bm ? true : false)
#define	udd_ack_crc_event()   (USB_INTFLAGSACLR = USB_CRCIF_bm)
#define	udd_set_crc_event()   (USB_INTFLAGSASET = USB_CRCIF_bm)
#define	udd_enable_crc_interrupt()   (USB_INTCTRLA |= USB_CRCIE_bm)
#define	udd_disable_crc_interrupt()   (USB_INTCTRLA &= ~USB_CRCIE_bm)
#define	udd_is_start_of_frame_event()   (USB_INTFLAGSASET & USB_SOFIF_bm ? true : false)
#define	udd_ack_start_of_frame_event()   (USB_INTFLAGSACLR = USB_SOFIF_bm)
#define	udd_set_start_of_frame_event()   (USB_INTFLAGSASET = USB_SOFIF_bm)
#define	udd_enable_start_of_frame_interrupt()   (USB_INTCTRLA |= USB_SOFIE_bm)
#define	udd_disable_start_of_frame_interrupt()   (USB_INTCTRLA &= ~USB_SOFIE_bm)
#define	udd_is_enable_start_of_frame_interrupt()   (0!=(USB_INTCTRLA|USB_SOFIE_bm))
#define	udd_is_reset_event()   (USB_INTFLAGSASET & USB_RSTIF_bm ? true : false)
#define	udd_ack_reset_event()   (USB_INTFLAGSACLR = USB_RSTIF_bm)
#define	udd_set_reset_event()   (USB_INTFLAGSASET = USB_RSTIF_bm)
#define	udd_is_suspend_event()   (USB_INTFLAGSASET & USB_SUSPENDIF_bm ? true : false)
#define	udd_ack_suspend_event()   (USB_INTFLAGSACLR = USB_SUSPENDIF_bm)
#define	udd_set_suspend_event()   (USB_INTFLAGSASET = USB_SUSPENDIF_bm)
#define	udd_is_resume_event()   (USB_INTFLAGSASET & USB_RESUMEIF_bm ? true : false)
#define	udd_ack_resume_event()   (USB_INTFLAGSACLR = USB_RESUMEIF_bm)
#define	udd_set_resume_event()   (USB_INTFLAGSASET = USB_RESUMEIF_bm)
#define	udd_enable_busevt_interrupt()   (USB_INTCTRLA |= USB_BUSEVIE_bm)
#define	udd_disable_busevt_interrupt()   (USB_INTCTRLA &= ~USB_BUSEVIE_bm)
#define	udd_is_setup_event()   (USB_INTFLAGSBCLR & USB_SETUPIF_bm ? true : false)
#define	udd_ack_setup_event()   (USB_INTFLAGSBCLR = USB_SETUPIF_bm)
#define	udd_set_setup_event()   (USB_INTFLAGSBSET = USB_SETUPIF_bm)
#define	udd_enable_setup_interrupt()   (USB_INTCTRLB |= USB_SETUPIE_bm)
#define	udd_disable_setup_interrupt()   (USB_INTCTRLB &= ~USB_SETUPIE_bm)
#define	udd_is_tc_event()   (USB_INTFLAGSBCLR & USB_TRNIF_bm ? true : false)
#define	udd_ack_tc_event()   (USB_INTFLAGSBCLR = USB_TRNIF_bm)
#define	udd_set_tc_event()   (USB_INTFLAGSBSET = USB_TRNIF_bm)
#define	udd_enable_tc_interrupt()   (USB_INTCTRLB |= USB_TRNIE_bm)
#define	udd_disable_tc_interrupt()   (USB_INTCTRLB &= ~USB_TRNIE_bm)
#define	udd_is_overflow_event()   (USB_INTFLAGSASET & USB_OVFIF_bm ? true : false)
#define	udd_ack_overflow_event()   (USB_INTFLAGSACLR = USB_OVFIF_bm)
#define	udd_set_overflow_event()   (USB_INTFLAGSASET = USB_OVFIF_bm)
#define	udd_enable_overflow_interrupt()   (USB_INTCTRLA |= USB_BUSERRIE_bm)
#define	udd_disable_overflow_interrupt()   (USB_INTCTRLA &= ~USB_BUSERRIE_bm)
#define	udd_is_enable_overflow_interrupt()   (USB_INTCTRLA&USB_BUSERRIE_bm ? true : false)
#define	udd_is_underflow_event()   (USB_INTFLAGSASET & USB_UNFIF_bm ? true : false)
#define	udd_ack_underflow_event()   (USB_INTFLAGSACLR = USB_UNFIF_bm)
#define	udd_set_underflow_event()   (USB_INTFLAGSASET = USB_UNFIF_bm)
#define	udd_enable_underflow_interrupt()   (USB_INTCTRLA |= USB_BUSERRIE_bm)
#define	udd_disable_underflow_interrupt()   (USB_INTCTRLA &= ~USB_BUSERRIE_bm)
#define	udd_is_enable_underflow_interrupt()   (USB_INTCTRLA&USB_BUSERRIE_bm ? true : false)
#define	udd_is_stall_event()   (USB_INTFLAGSASET & USB_STALLIF_bm ? true : false)
#define	udd_ack_stall_event()   (USB_INTFLAGSACLR = USB_STALLIF_bm)
#define	udd_set_stall_event()   (USB_INTFLAGSASET = USB_STALLIF_bm)
#define	udd_enable_stall_interrupt()   (USB_INTCTRLA |= USB_STALLIE_bm)
#define	udd_disable_stall_interrupt()   (USB_INTCTRLA &= ~USB_STALLIE_bm)
#define	udd_is_enable_stall_interrupt()   (USB_INTCTRLA&USB_STALLIE_bm ? true : false)

USB Device read/modify/write management
#define	LACR16(addr, msk)
#define	LASR16(addr, msk)
#define	XCHR16(addr, msk)
#define	LATR16(addr, msk)

USB Device endpoints table management
#define	udd_endpoint_set_control(ep_ctrl, val)   (ep_ctrl->CTRL=val)
#define	udd_endpoint_get_control(ep_ctrl)   (ep_ctrl->CTRL)
#define	udd_endpoint_disable(ep_ctrl)   udd_endpoint_set_control(ep_ctrl,0)
#define	udd_endpoint_is_enable(ep_ctrl)   (USB_EP_TYPE_DISABLE_gc!=udd_endpoint_get_type(ep_ctrl))
#define	udd_endpoint_enable_stall(ep_ctrl)   (ep_ctrl->CTRL |= USB_EP_STALL_bm)
#define	udd_endpoint_disable_stall(ep_ctrl)   (ep_ctrl->CTRL &= ~USB_EP_STALL_bm)
#define	udd_endpoint_is_stall(ep_ctrl)   (ep_ctrl->CTRL &USB_EP_STALL_bm ? true : false)
#define	udd_endpoint_set_multipacket(ep_ctrl)   (ep_ctrl->CTRL |= USB_EP_MULTIPKT_bm)
#define	udd_endpoint_TC_int_disable(ep_ctrl)   (ep_ctrl->CTRL |= USB_EP_INTDSBL_bm)
#define	udd_endpoint_set_pingpong(ep_ctrl)   (ep_ctrl->CTRL |= USB_EP_PINGPONG_bm)
#define	udd_endpoint_get_size_field(ep_ctrl)   (ep_ctrl->CTRL & USB_EP_BUFSIZE_gm)
#define	udd_endpoint_get_type(ep_ctrl)   (ep_ctrl->CTRL & USB_EP_TYPE_gm)
#define	udd_endpoint_get_status(ep_ctrl)   (ep_ctrl->STATUS)
#define	udd_endpoint_clear_status(ep_ctrl)   (ep_ctrl->STATUS=USB_EP_BUSNACK0_bm|USB_EP_BUSNACK1_bm)
#define	udd_endpoint_setup_received(ep_ctrl)   (ep_ctrl->STATUS&USB_EP_SETUP_bm ? true : false)
#define	udd_endpoint_ack_setup_received(ep_ctrl)   LACR16(&ep_ctrl->STATUS, USB_EP_SETUP_bm)
#define	udd_endpoint_transfer_complete(ep_ctrl)   (ep_ctrl->STATUS&USB_EP_TRNCOMPL0_bm ? true : false)
#define	udd_endpoint_ack_transfer_complete(ep_ctrl)   LACR16(&(ep_ctrl->STATUS), USB_EP_TRNCOMPL0_bm)
#define	udd_endpoint_transfer_complete_bank0(ep_ctrl)   (ep_ctrl->STATUS&USB_EP_TRNCOMPL0_bm ? true : false)
#define	udd_endpoint_ack_transfer_complete_bankO(ep_ctrl)   LACR16(&ep_ctrl->STATUS, USB_EP_TRNCOMPL0_bm)
#define	udd_endpoint_transfer_complete_bank1(ep_ctrl)   (ep_ctrl->STATUS&USB_EP_SETUP_bm ? true : false)
#define	udd_endpoint_ack_transfer_complete_bank1(ep_ctrl)   LACR16(&ep_ctrl->STATUS, USB_EP_SETUP_bm)
#define	udd_endpoint_get_bank(ep_ctrl)   (ep_ctrl->STATUS & USB_EP_BANK_bm ? true : false)
#define	udd_endpoint_set_bank(ep_ctrl)   LASR16(&ep_ctrl->STATUS, USB_EP_BANK_bm)
#define	udd_endpoint_clear_bank(ep_ctrl)   LACR16(&ep_ctrl->STATUS, USB_EP_BANK_bm)
#define	udd_endpoint_set_dtgl(ep_ctrl)   LASR16(&ep_ctrl->STATUS,USB_EP_TOGGLE_bm)
#define	udd_endpoint_clear_dtgl(ep_ctrl)   LACR16(&ep_ctrl->STATUS, USB_EP_TOGGLE_bm )
#define	udd_endpoint_get_dtgl(ep_ctrl)   ((ep_ctrl->STATUS)&USB_EP_TOGGLE_bm ? true : false)
#define	udd_endpoint_toggle_dtgl(ep_ctrl)   LATR16(&ep_ctrl->STATUS, USB_EP_TOGGLE_bm)
#define	udd_endpoint_set_NACK0(ep_ctrl)   LASR16(&ep_ctrl->STATUS,USB_EP_BUSNACK0_bm)
#define	udd_endpoint_set_NACK1(ep_ctrl)   LASR16(&ep_ctrl->STATUS,USB_EP_BUSNACK1_bm)
#define	udd_endpoint_clear_NACK0(ep_ctrl)   LACR16(&ep_ctrl->STATUS, USB_EP_BUSNACK0_bm)
#define	udd_endpoint_clear_NACK1(ep_ctrl)   LACR16(&ep_ctrl->STATUS, USB_EP_BUSNACK1_bm)
#define	udd_endpoint_get_NACK1(ep_ctrl)   ((ep_ctrl->STATUS&USB_EP_BUSNACK1_bm) ? true : false)
#define	udd_endpoint_get_NACK0(ep_ctrl)   ((ep_ctrl->STATUS&USB_EP_BUSNACK0_bm) ? true : false)
#define	udd_endpoint_overflow(ep_ctrl)   (ep_ctrl->STATUS&USB_EP_OVF_bm ? true : false)
#define	udd_endpoint_underflow(ep_ctrl)   (ep_ctrl->STATUS&USB_EP_UNF_bm ? true : false)
#define	UDD_ENDPOINT_MAX_TRANS   (0x3FF)
#define	udd_endpoint_out_nb_receiv(ep_ctrl)   (ep_ctrl->CNT)
#define	udd_endpoint_out_reset_nb_received(ep_ctrl)   (ep_ctrl->CNT = 0)
#define	udd_endpoint_in_set_bytecnt(ep_ctrl, n)   (ep_ctrl->CNT = n)
#define	udd_endpoint_set_azlp(ep_ctrl)   (ep_ctrl->CNT |= 0x8000)
#define	udd_endpoint_clear_azlp(ep_ctrl)   (ep_ctrl->CNT &= ~0x8000)
#define	udd_endpoint_set_buf(ep_ctrl, buf)   (ep_ctrl->DATAPTR = (uint16_t) buf)
#define	udd_endpoint_in_nb_sent(ep_ctrl)   (ep_ctrl->AUXDATA)
#define	udd_endpoint_in_reset_nb_sent(ep_ctrl)   (ep_ctrl->AUXDATA = 0)
#define	udd_endpoint_out_set_nbbyte(ep_ctrl, nb)   (ep_ctrl->AUXDATA = nb)
#define	udd_endpoint_out_get_nbbyte_requested(ep_ctrl)   (ep_ctrl->AUXDATA)
#define	udd_endpoint_set_aux(ep_ctrl, buf)   (ep_ctrl->AUXDATA = (uint16_t) buf)

USB Device endpoint control setup field management
#define	udd_control_setup()   (udd_sram.ep_ctrl[0].STATUS&USB_EP_SETUP_bm ? true : false)
#define	udd_control_ack_setup()   LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_SETUP_bm)

USB Device endpoint control OUT field management
#define	udd_control_out_is_enable_stall()   (udd_sram.ep_ctrl[0].CTRL&USB_EP_STALL_bm ? true : false)
#define	udd_control_out_enable_stall()   LASR16(&udd_sram.ep_ctrl[0].CTRL,USB_EP_STALL_bm)
#define	udd_control_out_disable_stall()   LACR16(&udd_sram.ep_ctrl[0].CTRL,USB_EP_STALL_bm)
#define	udd_control_out_is_stalled()   (udd_sram.ep_ctrl[0].STATUS&USB_EP_STALLF_bm ? true : false)
#define	udd_control_out_ack_stall()   LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_STALLF_bm)
#define	udd_control_out_set_NACK0()   LASR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_BUSNACK0_bm)
#define	udd_control_out_clear_NACK0()   LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_BUSNACK0_bm)
#define	udd_control_out_overflow()   (udd_sram.ep_ctrl[0].STATUS&USB_EP_OVF_bm ? true : false)
#define	udd_control_ack_out_overflow()   LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_OVF_bm)
#define	udd_control_out_tc()   (udd_sram.ep_ctrl[0].STATUS&USB_EP_TRNCOMPL0_bm ? true : false)
#define	udd_control_out_ack_tc()   LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TRNCOMPL0_bm)
#define	udd_control_out_set_tc()   LASR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TRNCOMPL0_bm)
#define	udd_control_out_dt_get()   (udd_sram.ep_ctrl[0].STATUS&USB_EP_TOGGLE_bm ? true : false)
#define	udd_control_out_dt_set()   LASR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TOGGLE_bm )
#define	udd_control_out_dt_clear()   LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TOGGLE_bm )
#define	udd_control_out_dt_toggle()   LATR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TOGGLE_bm)
#define	udd_control_out_set_buf(buf)   (udd_sram.ep_ctrl[0].DATAPTR = (uint16_t) buf)
#define	udd_control_out_get_bytecnt()   (udd_sram.ep_ctrl[0].CNT)

USB Device endpoint control IN field management
#define	udd_control_in_is_enable_stall()   (udd_sram.ep_ctrl[1].CTRL&USB_EP_STALL_bm ? true : false)
#define	udd_control_in_enable_stall()   LASR16(&udd_sram.ep_ctrl[1].CTRL,USB_EP_STALL_bm)
#define	udd_control_in_disable_stall()   LACR16(&udd_sram.ep_ctrl[1].CTRL,USB_EP_STALL_bm)
#define	udd_control_in_is_stalled()   (udd_sram.ep_ctrl[1].STATUS&USB_EP_STALLF_bm ? true : false)
#define	udd_control_in_ack_stall()   LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_STALLF_bm)
#define	udd_control_in_set_NACK0()   LASR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_BUSNACK0_bm)
#define	udd_control_in_clear_NACK0()   LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_BUSNACK0_bm)
#define	udd_control_in_underflow()   (udd_sram.ep_ctrl[1].STATUS&USB_EP_UNF_bm ? true : false)
#define	udd_control_ack_in_underflow()   LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_UNF_bm)
#define	udd_control_in_tc()   (udd_sram.ep_ctrl[1].STATUS&USB_EP_TRNCOMPL0_bm ? true : false)
#define	udd_control_in_ack_tc()   LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TRNCOMPL0_bm)
#define	udd_control_in_set_tc()   LASR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TRNCOMPL0_bm)
#define	udd_control_in_dt_get()   (udd_sram.ep_ctrl[1].STATUS&USB_EP_TOGGLE_bm ? true : false)
#define	udd_control_in_dt_set()   LASR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TOGGLE_bm )
#define	udd_control_in_dt_clear()   LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TOGGLE_bm )
#define	udd_control_in_dt_toggle()   LATR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TOGGLE_bm)
#define	udd_control_in_set_buf(buf)   (udd_sram.ep_ctrl[1].DATAPTR = (uint16_t) buf)
#define	udd_control_in_set_bytecnt(n)   (udd_sram.ep_ctrl[1].CNT = n)

#define LACR16	(		addr,
			msk
	)

Value:

__asm__ __volatile__ ( \
         "ldi r16, %1" "\n\t" \
         ".dc.w 0x9306" "\n\t"\
         ::"z" (addr), "M" (msk):"r16")

#define LASR16	(		addr,
			msk
	)

Value:

__asm__ __volatile__ ( \
         "ldi r16, %1" "\n\t" \
         ".dc.w 0x9305" "\n\t"\
         ::"z" (addr), "M" (msk):"r16")

#define LATR16	(		addr,
			msk
	)

Value:

__asm__ __volatile__ ( \
         "ldi r16, %1" "\n\t" \
         ".dc.w 0x9307" "\n\t"\
         ::"z" (addr), "M" (msk):"r16")

#define udd_ack_crc_event

(

)

(USB_INTFLAGSACLR = USB_CRCIF_bm)

#define udd_ack_overflow_event

(

)

(USB_INTFLAGSACLR = USB_OVFIF_bm)

Referenced by udd_ctrl_interrupt_error().

#define udd_ack_reset_event

(

)

(USB_INTFLAGSACLR = USB_RSTIF_bm)

Referenced by ISR().

#define udd_ack_resume_event

(

)

(USB_INTFLAGSACLR = USB_RESUMEIF_bm)

Referenced by ISR(), and udd_attach().

#define udd_ack_setup_event

(

)

(USB_INTFLAGSBCLR = USB_SETUPIF_bm)

Referenced by udd_ctrl_interrupt_tc_setup().

#define udd_ack_stall_event

(

)

(USB_INTFLAGSACLR = USB_STALLIF_bm)

Referenced by udd_ctrl_interrupt_tc_setup().

#define udd_ack_start_of_frame_event

(

)

(USB_INTFLAGSACLR = USB_SOFIF_bm)

Referenced by ISR().

#define udd_ack_suspend_event

(

)

(USB_INTFLAGSACLR = USB_SUSPENDIF_bm)

Referenced by ISR(), and udd_attach().

#define udd_ack_tc_event

(

)

(USB_INTFLAGSBCLR = USB_TRNIF_bm)

Referenced by ISR().

#define udd_ack_underflow_event

(

)

(USB_INTFLAGSACLR = USB_UNFIF_bm)

Referenced by udd_ctrl_interrupt_error().

#define udd_attach_device

(

)

(USB_CTRLB |= USB_ATTACH_bm)

Referenced by udd_attach().

#define udd_control_ack_in_underflow

(

)

LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_UNF_bm)

Referenced by udd_ctrl_init().

#define udd_control_ack_out_overflow

(

)

LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_OVF_bm)

Referenced by udd_ctrl_init().

#define udd_control_ack_setup

(

)

LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_SETUP_bm)

Referenced by udd_ctrl_interrupt_tc_setup().

#define udd_control_in_ack_stall

(

)

LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_STALLF_bm)

Referenced by udd_ctrl_interrupt_tc_setup().

#define udd_control_in_ack_tc

(

)

LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TRNCOMPL0_bm)

Referenced by udd_ctrl_init().

#define udd_control_in_clear_NACK0

(

)

LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_BUSNACK0_bm)

Referenced by udd_ctrl_in_sent(), and udd_ctrl_send_zlp_in().

#define udd_control_in_disable_stall

(

)

LACR16(&udd_sram.ep_ctrl[1].CTRL,USB_EP_STALL_bm)

#define udd_control_in_dt_clear

(

)

LACR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TOGGLE_bm )

#define udd_control_in_dt_get

(

)

(udd_sram.ep_ctrl[1].STATUS&USB_EP_TOGGLE_bm ? true : false)

#define udd_control_in_dt_set

(

)

LASR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TOGGLE_bm )

#define udd_control_in_dt_toggle

(

)

LATR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TOGGLE_bm)

#define udd_control_in_enable_stall

(

)

LASR16(&udd_sram.ep_ctrl[1].CTRL,USB_EP_STALL_bm)

Referenced by udd_ctrl_overflow(), udd_ctrl_stall_data(), and udd_ctrl_underflow().

#define udd_control_in_is_enable_stall

(

)

(udd_sram.ep_ctrl[1].CTRL&USB_EP_STALL_bm ? true : false)

#define udd_control_in_is_stalled

(

)

(udd_sram.ep_ctrl[1].STATUS&USB_EP_STALLF_bm ? true : false)

#define udd_control_in_set_buf

(

buf

)

(udd_sram.ep_ctrl[1].DATAPTR = (uint16_t) buf)

Referenced by udd_ctrl_in_sent().

#define udd_control_in_set_bytecnt

(

n

)

(udd_sram.ep_ctrl[1].CNT = n)

Referenced by udd_ctrl_in_sent(), udd_ctrl_init(), and udd_ctrl_send_zlp_in().

#define udd_control_in_set_NACK0

(

)

LASR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_BUSNACK0_bm)

Referenced by udd_ctrl_init().

#define udd_control_in_set_tc

(

)

LASR16(&udd_sram.ep_ctrl[1].STATUS,USB_EP_TRNCOMPL0_bm)

#define udd_control_in_tc

(

)

(udd_sram.ep_ctrl[1].STATUS&USB_EP_TRNCOMPL0_bm ? true : false)

#define udd_control_in_underflow

(

)

(udd_sram.ep_ctrl[1].STATUS&USB_EP_UNF_bm ? true : false)

Referenced by udd_ctrl_interrupt_error().

#define udd_control_out_ack_stall

(

)

LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_STALLF_bm)

Referenced by udd_ctrl_interrupt_tc_setup().

#define udd_control_out_ack_tc

(

)

LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TRNCOMPL0_bm)

Referenced by udd_ctrl_out_received(), and udd_ctrl_setup_received().

#define udd_control_out_clear_NACK0

(

)

LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_BUSNACK0_bm)

Referenced by udd_ctrl_out_received(), udd_ctrl_send_zlp_out(), and udd_ctrl_setup_received().

#define udd_control_out_disable_stall

(

)

LACR16(&udd_sram.ep_ctrl[0].CTRL,USB_EP_STALL_bm)

#define udd_control_out_dt_clear

(

)

LACR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TOGGLE_bm )

#define udd_control_out_dt_get

(

)

(udd_sram.ep_ctrl[0].STATUS&USB_EP_TOGGLE_bm ? true : false)

#define udd_control_out_dt_set

(

)

LASR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TOGGLE_bm )

#define udd_control_out_dt_toggle

(

)

LATR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TOGGLE_bm)

#define udd_control_out_enable_stall

(

)

LASR16(&udd_sram.ep_ctrl[0].CTRL,USB_EP_STALL_bm)

Referenced by udd_ctrl_overflow(), udd_ctrl_stall_data(), and udd_ctrl_underflow().

#define udd_control_out_get_bytecnt

(

)

(udd_sram.ep_ctrl[0].CNT)

Referenced by udd_ctrl_out_received(), and udd_ctrl_setup_received().

#define udd_control_out_is_enable_stall

(

)

(udd_sram.ep_ctrl[0].CTRL&USB_EP_STALL_bm ? true : false)

#define udd_control_out_is_stalled

(

)

(udd_sram.ep_ctrl[0].STATUS&USB_EP_STALLF_bm ? true : false)

#define udd_control_out_overflow

(

)

(udd_sram.ep_ctrl[0].STATUS&USB_EP_OVF_bm ? true : false)

Referenced by udd_ctrl_interrupt_error().

#define udd_control_out_set_buf

(

buf

)

(udd_sram.ep_ctrl[0].DATAPTR = (uint16_t) buf)

Referenced by ISR().

#define udd_control_out_set_NACK0

(

)

LASR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_BUSNACK0_bm)

#define udd_control_out_set_tc

(

)

LASR16(&udd_sram.ep_ctrl[0].STATUS,USB_EP_TRNCOMPL0_bm)

#define udd_control_out_tc

(

)

(udd_sram.ep_ctrl[0].STATUS&USB_EP_TRNCOMPL0_bm ? true : false)

#define udd_control_setup

(

)

(udd_sram.ep_ctrl[0].STATUS&USB_EP_SETUP_bm ? true : false)

Referenced by udd_ctrl_interrupt_tc_setup().

#define udd_detach_device

(

)

(USB_CTRLB &= ~USB_ATTACH_bm)

Referenced by udd_detach(), and udd_disable().

#define udd_disable_busevt_interrupt

(

)

(USB_INTCTRLA &= ~USB_BUSEVIE_bm)

#define udd_disable_crc_interrupt

(

)

(USB_INTCTRLA &= ~USB_CRCIE_bm)

#define udd_disable_fifo

(

)

(USB_CTRLA &= ~USB_FIFOEN_bm)

#define udd_disable_interface

(

)

(USB_CTRLA &= ~USB_ENABLE_bm)

#define udd_disable_overflow_interrupt

(

)

(USB_INTCTRLA &= ~USB_BUSERRIE_bm)

Referenced by udd_ctrl_init().

#define udd_disable_setup_interrupt

(

)

(USB_INTCTRLB &= ~USB_SETUPIE_bm)

#define udd_disable_stall_interrupt

(

)

(USB_INTCTRLA &= ~USB_STALLIE_bm)

#define udd_disable_start_of_frame_interrupt

(

)

(USB_INTCTRLA &= ~USB_SOFIE_bm)

#define udd_disable_store_frame_number

(

)

(USB_CTRLA &= ~USB_STFRNUM_bm)

#define udd_disable_tc_interrupt

(

)

(USB_INTCTRLB &= ~USB_TRNIE_bm)

#define udd_disable_underflow_interrupt

(

)

(USB_INTCTRLA &= ~USB_BUSERRIE_bm)

Referenced by udd_ctrl_init().

#define udd_enable_busevt_interrupt

(

)

(USB_INTCTRLA |= USB_BUSEVIE_bm)

Referenced by udd_attach().

#define udd_enable_crc_interrupt

(

)

(USB_INTCTRLA |= USB_CRCIE_bm)

#define udd_enable_fifo

(

)

(USB_CTRLA |= USB_FIFOEN_bm)

Referenced by udd_enable().

#define udd_enable_interface

(

)

(USB_CTRLA |= USB_ENABLE_bm)

Referenced by udd_enable().

#define udd_enable_interrupt

(

level

)

(USB_INTCTRLA |= level&(USB_INTLVL1_bm|USB_INTLVL0_bm))

Referenced by udd_enable().

#define udd_enable_overflow_interrupt

(

)

(USB_INTCTRLA |= USB_BUSERRIE_bm)

Referenced by udd_ctrl_setup_received().

#define udd_enable_setup_interrupt

(

)

(USB_INTCTRLB |= USB_SETUPIE_bm)

Referenced by udd_attach().

#define udd_enable_stall_interrupt

(

)

(USB_INTCTRLA |= USB_STALLIE_bm)

#define udd_enable_start_of_frame_interrupt

(

)

(USB_INTCTRLA |= USB_SOFIE_bm)

Referenced by udd_attach().

#define udd_enable_store_frame_number

(

)

(USB_CTRLA |= USB_STFRNUM_bm)

Referenced by udd_enable().

#define udd_enable_tc_interrupt

(

)

(USB_INTCTRLB |= USB_TRNIE_bm)

Referenced by udd_attach().

#define udd_enable_underflow_interrupt

(

)

(USB_INTCTRLA |= USB_BUSERRIE_bm)

Referenced by udd_ctrl_setup_received().

#define udd_endpoint_ack_setup_received

(

ep_ctrl

)

LACR16(&ep_ctrl->STATUS, USB_EP_SETUP_bm)

#define udd_endpoint_ack_transfer_complete

(

ep_ctrl

)

LACR16(&(ep_ctrl->STATUS), USB_EP_TRNCOMPL0_bm)

Referenced by ISR().

#define udd_endpoint_ack_transfer_complete_bank1

(

ep_ctrl

)

LACR16(&ep_ctrl->STATUS, USB_EP_SETUP_bm)

#define udd_endpoint_ack_transfer_complete_bankO

(

ep_ctrl

)

LACR16(&ep_ctrl->STATUS, USB_EP_TRNCOMPL0_bm)

#define udd_endpoint_clear_azlp

(

ep_ctrl

)

(ep_ctrl->CNT &= ~0x8000)

#define udd_endpoint_clear_bank

(

ep_ctrl

)

LACR16(&ep_ctrl->STATUS, USB_EP_BANK_bm)

#define udd_endpoint_clear_dtgl

(

ep_ctrl

)

LACR16(&ep_ctrl->STATUS, USB_EP_TOGGLE_bm )

Referenced by udd_ep_clear_halt().

#define udd_endpoint_clear_NACK0

(

ep_ctrl

)

LACR16(&ep_ctrl->STATUS, USB_EP_BUSNACK0_bm)

Referenced by udd_ep_trans_complet().

#define udd_endpoint_clear_NACK1

(

ep_ctrl

)

LACR16(&ep_ctrl->STATUS, USB_EP_BUSNACK1_bm)

#define udd_endpoint_clear_status

(

ep_ctrl

)

(ep_ctrl->STATUS=USB_EP_BUSNACK0_bm|USB_EP_BUSNACK1_bm)

Referenced by udd_ep_init().

#define udd_endpoint_disable

(

ep_ctrl

)

udd_endpoint_set_control(ep_ctrl,0)

Referenced by udd_ep_free(), and udd_ep_init().

#define udd_endpoint_disable_stall

(

ep_ctrl

)

(ep_ctrl->CTRL &= ~USB_EP_STALL_bm)

Referenced by udd_ep_clear_halt().

#define udd_endpoint_enable_stall

(

ep_ctrl

)

(ep_ctrl->CTRL |= USB_EP_STALL_bm)

Referenced by udd_ep_set_halt().

#define udd_endpoint_get_bank

(

ep_ctrl

)

(ep_ctrl->STATUS & USB_EP_BANK_bm ? true : false)

#define udd_endpoint_get_control

(

ep_ctrl

)

(ep_ctrl->CTRL)

#define udd_endpoint_get_dtgl

(

ep_ctrl

)

((ep_ctrl->STATUS)&USB_EP_TOGGLE_bm ? true : false)

#define udd_endpoint_get_NACK0

(

ep_ctrl

)

((ep_ctrl->STATUS&USB_EP_BUSNACK0_bm) ? true : false)

#define udd_endpoint_get_NACK1

(

ep_ctrl

)

((ep_ctrl->STATUS&USB_EP_BUSNACK1_bm) ? true : false)

#define udd_endpoint_get_size_field

(

ep_ctrl

)

(ep_ctrl->CTRL & USB_EP_BUFSIZE_gm)

Referenced by udd_ep_alloc(), and udd_ep_get_size().

#define udd_endpoint_get_status

(

ep_ctrl

)

(ep_ctrl->STATUS)

#define udd_endpoint_get_type

(

ep_ctrl

)

(ep_ctrl->CTRL & USB_EP_TYPE_gm)

Referenced by udd_ep_alloc(), and udd_ep_run().

#define udd_endpoint_in_nb_sent

(

ep_ctrl

)

(ep_ctrl->AUXDATA)

Referenced by udd_ep_abort(), and udd_ep_trans_complet().

#define udd_endpoint_in_reset_nb_sent

(

ep_ctrl

)

(ep_ctrl->AUXDATA = 0)

Referenced by udd_ep_run(), and udd_ep_trans_complet().

#define udd_endpoint_in_set_bytecnt	(		ep_ctrl,
			n
	)		(ep_ctrl->CNT = n)

Referenced by udd_ep_trans_complet().

#define udd_endpoint_is_enable

(

ep_ctrl

)

(USB_EP_TYPE_DISABLE_gc!=udd_endpoint_get_type(ep_ctrl))

Referenced by udd_ep_alloc(), and udd_ep_run().

#define udd_endpoint_is_stall

(

ep_ctrl

)

(ep_ctrl->CTRL &USB_EP_STALL_bm ? true : false)

Referenced by udd_ep_clear_halt(), udd_ep_is_halted(), udd_ep_run(), and udd_ep_wait_stall_clear().

#define UDD_ENDPOINT_MAX_TRANS   (0x3FF)

Referenced by udd_ep_trans_complet().

#define udd_endpoint_out_get_nbbyte_requested

(

ep_ctrl

)

(ep_ctrl->AUXDATA)

Referenced by udd_ep_trans_complet().

#define udd_endpoint_out_nb_receiv

(

ep_ctrl

)

(ep_ctrl->CNT)

Referenced by udd_ep_abort(), and udd_ep_trans_complet().

#define udd_endpoint_out_reset_nb_received

(

ep_ctrl

)

(ep_ctrl->CNT = 0)

Referenced by udd_ep_run(), and udd_ep_trans_complet().

#define udd_endpoint_out_set_nbbyte	(		ep_ctrl,
			nb
	)		(ep_ctrl->AUXDATA = nb)

Referenced by udd_ep_run(), and udd_ep_trans_complet().

#define udd_endpoint_overflow

(

ep_ctrl

)

(ep_ctrl->STATUS&USB_EP_OVF_bm ? true : false)

#define udd_endpoint_set_aux	(		ep_ctrl,
			buf
	)		(ep_ctrl->AUXDATA = (uint16_t) buf)

#define udd_endpoint_set_azlp

(

ep_ctrl

)

(ep_ctrl->CNT |= 0x8000)

#define udd_endpoint_set_bank

(

ep_ctrl

)

LASR16(&ep_ctrl->STATUS, USB_EP_BANK_bm)

#define udd_endpoint_set_buf	(		ep_ctrl,
			buf
	)		(ep_ctrl->DATAPTR = (uint16_t) buf)

Referenced by udd_ep_trans_complet().

#define udd_endpoint_set_control	(		ep_ctrl,
			val
	)		(ep_ctrl->CTRL=val)

Referenced by udd_ep_init().

#define udd_endpoint_set_dtgl

(

ep_ctrl

)

LASR16(&ep_ctrl->STATUS,USB_EP_TOGGLE_bm)

#define udd_endpoint_set_multipacket

(

ep_ctrl

)

(ep_ctrl->CTRL |= USB_EP_MULTIPKT_bm)

Referenced by udd_ep_alloc().

#define udd_endpoint_set_NACK0

(

ep_ctrl

)

LASR16(&ep_ctrl->STATUS,USB_EP_BUSNACK0_bm)

Referenced by udd_ep_abort().

#define udd_endpoint_set_NACK1

(

ep_ctrl

)

LASR16(&ep_ctrl->STATUS,USB_EP_BUSNACK1_bm)

#define udd_endpoint_set_pingpong

(

ep_ctrl

)

(ep_ctrl->CTRL |= USB_EP_PINGPONG_bm)

#define udd_endpoint_setup_received

(

ep_ctrl

)

(ep_ctrl->STATUS&USB_EP_SETUP_bm ? true : false)

#define udd_endpoint_TC_int_disable

(

ep_ctrl

)

(ep_ctrl->CTRL |= USB_EP_INTDSBL_bm)

#define udd_endpoint_toggle_dtgl

(

ep_ctrl

)

LATR16(&ep_ctrl->STATUS, USB_EP_TOGGLE_bm)

#define udd_endpoint_transfer_complete

(

ep_ctrl

)

(ep_ctrl->STATUS&USB_EP_TRNCOMPL0_bm ? true : false)

Referenced by ISR().

#define udd_endpoint_transfer_complete_bank0

(

ep_ctrl

)

(ep_ctrl->STATUS&USB_EP_TRNCOMPL0_bm ? true : false)

#define udd_endpoint_transfer_complete_bank1

(

ep_ctrl

)

(ep_ctrl->STATUS&USB_EP_SETUP_bm ? true : false)

#define udd_endpoint_underflow

(

ep_ctrl

)

(ep_ctrl->STATUS&USB_EP_UNF_bm ? true : false)

#define udd_get_device_address

(

)

(USB_ADDR)

Referenced by udd_getaddress().

#define udd_get_ep_table_addr

(

)

(USB.EPPTR)

#define udd_get_fifo_rp

(

)

(USB_FIFORP)

Referenced by ISR().

#define udd_gnak_disable

(

)

(USB_CTRLB &= ~USB_GNACK_bm)

#define udd_gnak_enable

(

)

(USB_CTRLB |= USB_GNACK_bm)

#define udd_gnak_is_enable

(

)

(USB_CTRLB & USB_GNACK_bm)

#define udd_is_crc_event

(

)

(USB_INTFLAGSASET & USB_CRCIF_bm ? true : false)

#define udd_is_enable_overflow_interrupt

(

)

(USB_INTCTRLA&USB_BUSERRIE_bm ? true : false)

#define udd_is_enable_stall_interrupt

(

)

(USB_INTCTRLA&USB_STALLIE_bm ? true : false)

#define udd_is_enable_start_of_frame_interrupt

(

)

(0!=(USB_INTCTRLA|USB_SOFIE_bm))

#define udd_is_enable_underflow_interrupt

(

)

(USB_INTCTRLA&USB_BUSERRIE_bm ? true : false)

#define udd_is_overflow_event

(

)

(USB_INTFLAGSASET & USB_OVFIF_bm ? true : false)

Referenced by udd_ctrl_interrupt_error().

#define udd_is_reset_event

(

)

(USB_INTFLAGSASET & USB_RSTIF_bm ? true : false)

Referenced by ISR().

#define udd_is_resume_event

(

)

(USB_INTFLAGSASET & USB_RESUMEIF_bm ? true : false)

Referenced by ISR().

#define udd_is_setup_event

(

)

(USB_INTFLAGSBCLR & USB_SETUPIF_bm ? true : false)

Referenced by udd_ctrl_interrupt_tc_setup().

#define udd_is_stall_event

(

)

(USB_INTFLAGSASET & USB_STALLIF_bm ? true : false)

#define udd_is_start_of_frame_event

(

)

(USB_INTFLAGSASET & USB_SOFIF_bm ? true : false)

Referenced by ISR().

#define udd_is_suspend_event

(

)

(USB_INTFLAGSASET & USB_SUSPENDIF_bm ? true : false)

Referenced by ISR().

#define udd_is_tc_event

(

)

(USB_INTFLAGSBCLR & USB_TRNIF_bm ? true : false)

Referenced by ISR(), udd_ctrl_overflow(), and udd_ctrl_underflow().

#define udd_is_underflow_event

(

)

(USB_INTFLAGSASET & USB_UNFIF_bm ? true : false)

Referenced by udd_ctrl_interrupt_error().

#define udd_reset_fifo

(

)

(USB_FIFORP=0xFF)

Referenced by udd_enable().

#define udd_send_remote_wake_up

(

)

(USB_CTRLB &= ~USB_RWAKEUP_bm, USB_CTRLB |= USB_RWAKEUP_bm)

Referenced by udd_send_remotewakeup().

#define udd_set_crc_event

(

)

(USB_INTFLAGSASET = USB_CRCIF_bm)

#define udd_set_device_address

(

n

)

(USB_ADDR=n)

Referenced by ISR(), and udd_set_address().

#define udd_set_ep_table_addr

(

n

)

(USB.EPPTR = (uint16_t)n)

Referenced by udd_enable().

#define udd_set_full_speed

(

)

(USB_CTRLA |= USB_SPEED_bm)

Referenced by udd_enable().

#define udd_set_global_nack

(

)

(USB_CTRLB |= USB_GNACK_bm)

#define udd_set_low_speed

(

)

(USB_CTRLA &= ~USB_SPEED_bm)

Referenced by udd_enable().

#define udd_set_nb_max_ep

(

n

)

(USB_CTRLA |= n)

Referenced by udd_enable().

#define udd_set_overflow_event

(

)

(USB_INTFLAGSASET = USB_OVFIF_bm)

#define udd_set_reset_event

(

)

(USB_INTFLAGSASET = USB_RSTIF_bm)

#define udd_set_resume_event

(

)

(USB_INTFLAGSASET = USB_RESUMEIF_bm)

#define udd_set_setup_event

(

)

(USB_INTFLAGSBSET = USB_SETUPIF_bm)

#define udd_set_stall_event

(

)

(USB_INTFLAGSASET = USB_STALLIF_bm)

#define udd_set_start_of_frame_event

(

)

(USB_INTFLAGSASET = USB_SOFIF_bm)

#define udd_set_suspend_event

(

)

(USB_INTFLAGSASET = USB_SUSPENDIF_bm)

#define udd_set_tc_event

(

)

(USB_INTFLAGSBSET = USB_TRNIF_bm)

#define udd_set_underflow_event

(

)

(USB_INTFLAGSASET = USB_UNFIF_bm)

#define USBC_SLEEP_MODE_USB_IDLE   SLEEPMGR_IDLE

Referenced by udd_sleep_mode().

#define USBC_SLEEP_MODE_USB_SUSPEND   SLEEPMGR_PDOWN

Definition of sleep levels.

Referenced by udd_disable(), and udd_enable().

#define XCHR16	(		addr,
			msk
	)

Value:

__asm__ __volatile__ ( \
         "ldi r16, %1" "\n\t" \
         ".dc.w 0x9304" "\n\t"\
         ::"z" (addr), "M" (msk):"r16")

ISR

(

USB_BUSEVENT_vect

)

Function called by USB bus event interrupt.

USB bus event interrupt includes :

• USB line events SOF, reset, suspend, resume, wakeup
• endpoint control errors underflow, overflow, stall

References udc_reset(), UDC_RESUME_EVENT, UDC_SOF_EVENT, udc_sof_notify(), UDC_SUSPEND_EVENT, udd_ack_reset_event, udd_ack_resume_event, udd_ack_start_of_frame_event, udd_ack_suspend_event, udd_control_out_set_buf, udd_ctrl_init(), udd_ctrl_interrupt_error(), udd_ep_abort(), udd_ep_init(), udd_is_reset_event, udd_is_resume_event, udd_is_start_of_frame_event, udd_is_suspend_event, udd_set_device_address, udd_sleep_mode(), USB_DEVICE_EP_CTRL_SIZE, USB_DEVICE_MAX_EP, USB_EP_DIR_IN, and USB_EP_TYPE_CONTROL.

ISR

(

USB_TRNCOMPL_vect

)

Function called by USB transfer complete interrupt.

USB transfer complete interrupt includes events about endpoint transfer on all endpoints.

References Assert, udd_ack_tc_event, udd_ctrl_in_sent(), udd_ctrl_interrupt_tc_setup(), udd_ctrl_out_received(), udd_endpoint_ack_transfer_complete, udd_endpoint_transfer_complete, udd_ep_get_ctrl(), udd_ep_is_valid(), UDD_EP_t, udd_ep_trans_complet(), udd_get_fifo_rp, udd_is_tc_event, USB_DEVICE_MAX_EP, USB_EP_ADDR_MASK, and USB_EP_DIR_IN.

void udd_attach

(

void

)

Attach device to the bus when possible.

Warning

If a VBus control is included in driver, then it will attach device when an acceptable Vbus level from the host is detected.

References cpu_irq_restore(), cpu_irq_save(), udd_ack_resume_event, udd_ack_suspend_event, udd_attach_device, udd_enable_busevt_interrupt, udd_enable_setup_interrupt, udd_enable_start_of_frame_interrupt, udd_enable_tc_interrupt, and udd_sleep_mode().

Referenced by udc_attach(), and udd_enable().

static void udd_ctrl_endofrequest ( void  )

static

Call callback associated to setup request.

References udd_ctrl_request_t::callback.

Referenced by udd_ctrl_in_sent(), udd_ctrl_out_received(), and udd_ctrl_setup_received().

static void udd_ctrl_in_sent ( void  )

static

Managed reception of IN packet on control endpoint.

References Assert, udd_ctrl_request_t::over_under_run, udd_ctrl_request_t::payload, udd_ctrl_request_t::payload_size, udd_ctrl_request_t::req, udd_control_in_clear_NACK0, udd_control_in_set_buf, udd_control_in_set_bytecnt, udd_ctrl_endofrequest(), udd_ctrl_init(), udd_ctrl_payload_nb_trans, udd_ctrl_send_zlp_out(), USB_DEVICE_EP_CTRL_SIZE, and usb_setup_req_t::wLength.

Referenced by ISR(), and udd_ctrl_setup_received().

static void udd_ctrl_init ( void  )

static

Reset control endpoint management.

Called after a USB line reset or at the end of SETUP request (after ZLP)

References udd_ctrl_request_t::callback, udd_ctrl_request_t::over_under_run, udd_ctrl_request_t::payload_size, udd_control_ack_in_underflow, udd_control_ack_out_overflow, udd_control_in_ack_tc, udd_control_in_set_bytecnt, udd_control_in_set_NACK0, udd_disable_overflow_interrupt, and udd_disable_underflow_interrupt.

Referenced by ISR(), udd_ctrl_in_sent(), udd_ctrl_out_received(), and udd_ctrl_setup_received().

static bool udd_ctrl_interrupt_error ( void  )

static

Sub interrupt routine to manage error on control endpoint.

Returns

1 if an error about control endpoint is occurred, otherwise 0.

References udd_ack_overflow_event, udd_ack_underflow_event, udd_control_in_underflow, udd_control_out_overflow, udd_ctrl_overflow(), udd_ctrl_underflow(), udd_is_overflow_event, and udd_is_underflow_event.

Referenced by ISR().

static bool udd_ctrl_interrupt_tc_setup ( void  )

static

Sub interrupt routine to manage a SETUP transfer complete on control endpoint.

Returns

1 if an SETUP transfer complete about control endpoint is occurred, otherwise 0.

References Assert, udd_ack_setup_event, udd_ack_stall_event, udd_control_ack_setup, udd_control_in_ack_stall, udd_control_out_ack_stall, udd_control_setup, udd_ctrl_setup_received(), and udd_is_setup_event.

Referenced by ISR(), udd_ctrl_overflow(), and udd_ctrl_underflow().

static void udd_ctrl_out_received ( void  )

static

Managed reception of OUT packet on control endpoint.

References Assert, udd_ctrl_request_t::over_under_run, udd_ctrl_request_t::payload, udd_ctrl_request_t::payload_size, udd_ctrl_request_t::req, udd_control_out_ack_tc, udd_control_out_clear_NACK0, udd_control_out_get_bytecnt, udd_ctrl_endofrequest(), udd_ctrl_init(), udd_ctrl_payload_nb_trans, udd_ctrl_send_zlp_in(), udd_ctrl_stall_data(), USB_DEVICE_EP_CTRL_SIZE, and usb_setup_req_t::wLength.

Referenced by ISR().

static void udd_ctrl_overflow ( void  )

static

Managed overflow event of OUT packet on control endpoint It is used to detect a DATA phase stopped by the host via a ZLP request.

This is mandatory for chapter 8 compliance

References udd_control_in_enable_stall, udd_control_out_enable_stall, udd_ctrl_interrupt_tc_setup(), udd_ctrl_send_zlp_out(), and udd_is_tc_event.

Referenced by udd_ctrl_interrupt_error().

static void udd_ctrl_send_zlp_in ( void  )

static

Send a ZLP IN on control endpoint.

References udd_control_in_clear_NACK0, and udd_control_in_set_bytecnt.

Referenced by udd_ctrl_out_received(), udd_ctrl_setup_received(), and udd_ctrl_underflow().

static void udd_ctrl_send_zlp_out ( void  )

static

Send a ZLP OUT on control endpoint.

References udd_control_out_clear_NACK0.

Referenced by udd_ctrl_in_sent(), and udd_ctrl_overflow().

static void udd_ctrl_setup_received ( void  )

static

Managed reception of SETUP packet on control endpoint.

References udd_ctrl_request_t::req, udc_process_setup(), udd_control_out_ack_tc, udd_control_out_clear_NACK0, udd_control_out_get_bytecnt, udd_ctrl_endofrequest(), udd_ctrl_in_sent(), udd_ctrl_init(), udd_ctrl_send_zlp_in(), udd_ctrl_stall_data(), udd_enable_overflow_interrupt, udd_enable_underflow_interrupt, Udd_setup_is_in, and usb_setup_req_t::wLength.

Referenced by udd_ctrl_interrupt_tc_setup().

static void udd_ctrl_stall_data ( void  )

static

Managed stall event of IN/OUT packet on control endpoint.

References udd_control_in_enable_stall, and udd_control_out_enable_stall.

Referenced by udd_ctrl_out_received(), and udd_ctrl_setup_received().

static void udd_ctrl_underflow ( void  )

static

Managed underflow event of IN packet on control endpoint It is used to detect a DATA phase stopped by the host via a ZLP request.

This is mandatory for chapter 8 compliance

References udd_control_in_enable_stall, udd_control_out_enable_stall, udd_ctrl_interrupt_tc_setup(), udd_ctrl_send_zlp_in(), and udd_is_tc_event.

Referenced by udd_ctrl_interrupt_error().

void udd_detach

(

void

)

Detaches the device from the bus.

The driver must remove pull-up on USB line D- or D+.

References udd_detach_device.

Referenced by udc_detach().

void udd_disable

(

void

)

Disables the USB Device mode.

References cpu_irq_restore(), cpu_irq_save(), sleepmgr_unlock_mode(), udd_detach_device, udd_sleep_mode(), and USBC_SLEEP_MODE_USB_SUSPEND.

Referenced by udc_stop().

void udd_enable

(

void

)

Enables the USB Device mode.

References Assert, udd_ep_job_t::busy, cpu_irq_restore(), cpu_irq_save(), sleepmgr_lock_mode(), udd_attach(), udd_b_idle, udd_enable_fifo, udd_enable_interface, udd_enable_interrupt, udd_enable_store_frame_number, udd_reset_fifo, udd_set_ep_table_addr, udd_set_full_speed, udd_set_low_speed, udd_set_nb_max_ep, UDD_USB_INT_LEVEL, USB_DEVICE_MAX_EP, usb_pad_init(), and USBC_SLEEP_MODE_USB_SUSPEND.

Referenced by udc_start().

void udd_ep_abort

(

udd_ep_id_t

ep

)

Aborts transfer on going on 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

ep	Endpoint to abort

References Assert, udd_ep_job_t::busy, udd_ep_job_t::call_trans, udd_endpoint_in_nb_sent, udd_endpoint_out_nb_receiv, udd_endpoint_set_NACK0, udd_ep_get_ctrl(), udd_ep_get_job(), udd_ep_is_valid(), UDD_EP_t, UDD_EP_TRANSFER_ABORT, and USB_EP_DIR_IN.

Referenced by ISR(), udc_req_std_ep_set_feature(), udd_ep_free(), and udd_ep_set_halt().

bool udd_ep_alloc	(	udd_ep_id_t	ep,
		uint8_t	bmAttributes,
		uint16_t	MaxEndpointSize
	)

Configures and enables an endpoint.

Parameters

ep	Endpoint number including direction (USB_EP_DIR_IN/USB_EP_DIR_OUT).
bmAttributes	Attributes of endpoint declared in the descriptor.
MaxEndpointSize	Endpoint maximum size

Returns

1 if the endpoint is enabled, otherwise 0.

References Assert, udd_endpoint_get_size_field, udd_endpoint_get_type, udd_endpoint_is_enable, udd_endpoint_set_multipacket, udd_ep_get_ctrl(), udd_ep_init(), udd_ep_is_valid(), and UDD_EP_t.

Referenced by udc_iface_enable().

bool udd_ep_clear_halt

(

udd_ep_id_t

ep

)

Clear the halted state of the endpoint ep.

After calling this function, any transaction on ep will be handled normally, i.e. a STALL handshake will not be sent, and the data toggle sequence will start at DATA0.

Parameters

ep	The ID of the endpoint to be un-halted

Returns

1 if function was successfully done, otherwise 0.

References Assert, udd_ep_job_t::busy, udd_ep_job_t::call_nohalt, udd_endpoint_clear_dtgl, udd_endpoint_disable_stall, udd_endpoint_is_stall, udd_ep_get_ctrl(), udd_ep_get_job(), udd_ep_is_valid(), and UDD_EP_t.

Referenced by udc_req_std_ep_clear_feature().

void udd_ep_free

(

udd_ep_id_t

ep

)

Disables an endpoint.

Parameters

ep	Endpoint number including direction (USB_EP_DIR_IN/USB_EP_DIR_OUT).

References Assert, udd_endpoint_disable, udd_ep_abort(), udd_ep_get_ctrl(), udd_ep_is_valid(), and UDD_EP_t.

Referenced by udc_iface_disable().

static UDD_EP_t* udd_ep_get_ctrl ( udd_ep_id_t  ep )

static

References USB_EP_ADDR_MASK, and USB_EP_DIR_IN.

Referenced by ISR(), udd_ep_abort(), udd_ep_alloc(), udd_ep_clear_halt(), udd_ep_free(), udd_ep_init(), udd_ep_is_halted(), udd_ep_run(), udd_ep_set_halt(), udd_ep_trans_complet(), and udd_ep_wait_stall_clear().

static udd_ep_job_t * udd_ep_get_job ( udd_ep_id_t  ep )

static

Returns a pointer on endpoint job corresponding at endpoint number.

Parameters

ep	Endpoint number including direction (USB_EP_DIR_IN/USB_EP_DIR_OUT).

References USB_EP_ADDR_MASK, and USB_EP_DIR_IN.

Referenced by udd_ep_abort(), udd_ep_clear_halt(), udd_ep_run(), udd_ep_trans_complet(), and udd_ep_wait_stall_clear().

static uint16_t udd_ep_get_size ( UDD_EP_t *  ep_ctrl )

static

Returns the size of endpoint.

Returns

the size of current selected endpoint

References udd_endpoint_get_size_field.

Referenced by udd_ep_run(), and udd_ep_trans_complet().

static void udd_ep_init ( udd_ep_id_t  ep, uint8_t  bmAttributes, uint16_t  MaxEndpointSize  )

static

References Assert, udd_endpoint_clear_status, udd_endpoint_disable, udd_endpoint_set_control, udd_ep_get_ctrl(), UDD_EP_t, USB_EP_TYPE_BULK, USB_EP_TYPE_CONTROL, USB_EP_TYPE_INTERRUPT, USB_EP_TYPE_ISOCHRONOUS, and USB_EP_TYPE_MASK.

Referenced by ISR(), and udd_ep_alloc().

bool udd_ep_is_halted

(

udd_ep_id_t

ep

)

Check if the endpoint ep is halted.

Parameters

ep	The ID of the endpoint to check.

Returns

1 if ep is halted, otherwise 0.

References Assert, udd_endpoint_is_stall, udd_ep_get_ctrl(), udd_ep_is_valid(), and UDD_EP_t.

Referenced by udc_req_std_ep_get_status().

bool udd_ep_is_valid

(

udd_ep_id_t

ep

)

Checks endpoint number.

Parameters

ep	endpoint number

References USB_DEVICE_MAX_EP, and USB_EP_ADDR_MASK.

Referenced by ISR(), udd_ep_abort(), udd_ep_alloc(), udd_ep_clear_halt(), udd_ep_free(), udd_ep_is_halted(), udd_ep_run(), udd_ep_set_halt(), and udd_ep_wait_stall_clear().

bool udd_ep_run	(	udd_ep_id_t	ep,
		bool	b_shortpacket,
		uint8_t *	buf,
		iram_size_t	buf_size,
		udd_callback_trans_t	callback
	)

Allows to receive or send data on an endpoint.

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

Parameters

ep	The ID of the endpoint to use
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
callback	NULL or function to call at the end of transfer

Warning

About b_shortpacket, for IN endpoint it means that a short packet (or a Zero Length Packet) will be sent to the USB line to properly close the usb transfer at the end of the data transfer. For Bulk and Interrupt OUT endpoint, it will automatically stop the transfer at the end of the data transfer (received short packet).

Returns

1 if function was successfully done, otherwise 0.

References Assert, udd_ep_job_t::b_shortpacket, udd_ep_job_t::b_use_out_cache_buffer, udd_ep_job_t::buf, udd_ep_job_t::buf_size, udd_ep_job_t::busy, udd_ep_job_t::call_trans, cpu_irq_restore(), cpu_irq_save(), udd_ep_job_t::nb_trans, udd_endpoint_get_type, udd_endpoint_in_reset_nb_sent, udd_endpoint_is_enable, udd_endpoint_is_stall, udd_endpoint_out_reset_nb_received, udd_endpoint_out_set_nbbyte, udd_ep_get_ctrl(), udd_ep_get_job(), udd_ep_get_size(), udd_ep_is_valid(), UDD_EP_t, udd_ep_trans_complet(), and USB_EP_DIR_IN.

Referenced by udi_cdc_ctrl_state_notify(), udi_cdc_data_received(), udi_cdc_rx_start(), and udi_cdc_tx_send().

bool udd_ep_set_halt

(

udd_ep_id_t

ep

)

Set the halted state of the endpoint ep.

After calling this function, any transaction on ep will result in a STALL handshake being sent. Any pending transactions will be performed first, however.

Parameters

ep	The ID of the endpoint to be halted

Returns

1 if ep is halted, otherwise 0.

References Assert, udd_endpoint_enable_stall, udd_ep_abort(), udd_ep_get_ctrl(), udd_ep_is_valid(), and UDD_EP_t.

Referenced by udc_req_std_ep_set_feature().

static void udd_ep_trans_complet ( udd_ep_id_t  ep )

static

Manages transfer complete on bulk/interrupt/isochronous endpoints.

Parameters

ep	endpoint number to manage

References udd_ep_job_t::b_shortpacket, udd_ep_job_t::b_use_out_cache_buffer, udd_ep_job_t::buf, udd_ep_job_t::buf_size, udd_ep_job_t::busy, udd_ep_job_t::call_trans, udd_ep_job_t::nb_trans, udd_endpoint_clear_NACK0, udd_endpoint_in_nb_sent, udd_endpoint_in_reset_nb_sent, udd_endpoint_in_set_bytecnt, UDD_ENDPOINT_MAX_TRANS, udd_endpoint_out_get_nbbyte_requested, udd_endpoint_out_nb_receiv, udd_endpoint_out_reset_nb_received, udd_endpoint_out_set_nbbyte, udd_endpoint_set_buf, udd_ep_get_ctrl(), udd_ep_get_job(), udd_ep_get_size(), UDD_EP_t, UDD_EP_TRANSFER_OK, and USB_EP_DIR_IN.

Referenced by ISR(), and udd_ep_run().

bool udd_ep_wait_stall_clear	(	udd_ep_id_t	ep,
		udd_callback_halt_cleared_t	callback
	)

Registers a callback to call when endpoint halt is cleared.

Parameters

ep	The ID of the endpoint to use
callback	NULL or function to call when endpoint halt is cleared

Warning

if the endpoint is not halted then the callback is called immediately.

Returns

1 if the register is accepted, otherwise 0.

References Assert, udd_ep_job_t::busy, udd_ep_job_t::call_nohalt, udd_endpoint_is_stall, udd_ep_get_ctrl(), udd_ep_get_job(), udd_ep_is_valid(), and UDD_EP_t.

uint16_t udd_get_frame_number

(

void

)

Returns the current start of frame number.

Returns

current start of frame number.

Referenced by main_sof_action(), and udi_cdc_tx_send().

uint16_t udd_get_micro_frame_number

(

void

)

Returns the current micro start of frame number.

Returns

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

Referenced by udi_cdc_tx_send().

uint8_t udd_getaddress

(

void

)

Returns the USB address of device.

Returns

USB address

References udd_get_device_address.

Referenced by udc_req_std_dev_set_configuration().

bool udd_include_vbus_monitoring

(

void

)

Authorizes the VBUS event.

Returns

true, if the VBUS monitoring is possible.

Referenced by udc_include_vbus_monitoring().

bool udd_is_high_speed

(

void

)

Test whether the USB Device Controller is running at high speed or not.

Returns

true if the Device is running at high speed mode, otherwise false.

Referenced by udc_req_std_dev_get_descriptor(), udc_req_std_dev_set_configuration(), udc_req_std_dev_set_feature(), and udi_cdc_tx_send().

void udd_send_remotewakeup

(

void

)

The USB driver sends a resume signal called Upstream Resume.

References udd_b_idle, udd_send_remote_wake_up, and udd_sleep_mode().

Referenced by udc_remotewakeup().

void udd_set_address

(

uint8_t

address

)

Changes the USB address of device.

Parameters

address

New USB address

References udd_set_device_address.

Referenced by udc_valid_address().

void udd_set_setup_payload	(	uint8_t *	payload,
		uint16_t	payload_size
	)

Load setup payload.

Parameters

payload	Pointer on payload
payload_size	Size of payload

References udd_ctrl_request_t::payload, and udd_ctrl_request_t::payload_size.

Referenced by udc_req_std_dev_get_configuration(), udc_req_std_dev_get_descriptor(), udc_req_std_dev_get_status(), udc_req_std_dev_get_str_desc(), udc_req_std_ep_get_status(), and udc_req_std_iface_get_setting().

static void udd_sleep_mode ( bool  b_idle )

static

Authorize or not the CPU powerdown mode.

Parameters

b_enable

true to authorize powerdown mode

References sleepmgr_lock_mode(), sleepmgr_unlock_mode(), udd_b_idle, and USBC_SLEEP_MODE_USB_IDLE.

Referenced by ISR(), udd_attach(), udd_disable(), and udd_send_remotewakeup().

static void usb_pad_init ( void  )

inlinestatic

Initializes the USB DP/DM buffers.

This functions initializes the USB buffer using the calibration value stored in production raw. If the calibration value is not found (0xFF) value, a default typical value is applied. Alternatively user can force calibration values using USB_PAD_USER_CAL0 and USB_PAD_USER_CAL1

References nvm_get_production_signature_row_offset, and nvm_read_production_signature_row().

Referenced by udd_enable().

bool udd_b_idle

static

State of USB line.

Referenced by udd_enable(), udd_send_remotewakeup(), and udd_sleep_mode().

uint8_t udd_ctrl_buffer[USB_DEVICE_EP_CTRL_SIZE]

static

Buffer to store the data received on control endpoint (SETUP/OUT endpoint 0)

Used to avoid a RAM buffer overflow in case of the payload buffer is smaller than control endpoint size

udd_ctrl_ep_state_t

uint16_t udd_ctrl_payload_nb_trans

static

Number of data received/sent to/from udd_g_ctrlreq.payload buffer.

Referenced by udd_ctrl_in_sent(), and udd_ctrl_out_received().

uint16_t udd_ctrl_prev_payload_nb_trans

static

Total number of data received/sent during data packet phase with previous payload buffers.

udd_ctrl_ep_state_t udd_ep_control_state

static

State of the endpoint control management.

udd_ep_job_t udd_ep_job[USB_DEVICE_MAX_EP *2]

static

Array to register a job on bulk/interrupt/isochronous endpoint.

uint8_t udd_ep_out_cache_buffer[USB_DEVICE_MAX_EP][64]

static

Buffer to store the data received on bulk/interrupt endpoints.

Used to avoid a RAM buffer overflow in case of the user buffer is smaller than endpoint size

Warning

The isochronous endpoint is not protected by this system and the user must always use a buffer corresponding at endpoint size